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The Indian Ocean: Aseismic Ridges, Spreading Centers, and Oceanic Basins

  • R. Schlich

Abstract

The Indian Ocean has often been considered as the most complex of the world’s major oceans. In fact, it has been the last of the three oceans to be studied, and now, in spite of its real complexity, the Indian Ocean appears to be as well understood as the other oceans. Although immense areas are nearly unexplored to this day, in particular the whole region south of 58°S, it is now possible, by using the fracture zones and observed magnetic lineations, to identify the major events which have contributed to the formation of this ocean, at least since late Cretaceous time. The Mesozoic geological history of the Indian Ocean still remains uncertain, and its clarification needs the collection of complementary data, mainly in the southern part of this ocean.

Keywords

Magnetic Anomaly Magnetic Lineation Ninetyeast Ridge Southwest Indian Ridge Central Indian Ridge 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. Andriamirado, R., 1976, Quelques remarques sur l’ancienne position de Madagascar par rapport à l’Afrique, C. R. Acad. Sci., Paris, v. 282 (D), p. 2041–2043.Google Scholar
  2. Aubert de la Rue, E., 1929, Sur la constitution géologique de l’île Heard, C. R. Acad. Sci., Paris, v. 189, p. 129–131.Google Scholar
  3. Aubert de la Rue, E., 1932, Etude géologique et géographique de l’archipel de Kerguelen, Revue Géogr. Phys. Géol. dyn., v. 5, p. 1–321.Google Scholar
  4. Aubert de la Rue, E., 1956, Sur les différentes séries de laves et les roches intrusives associées de la péninsule Courbet (archipel de Kerguelen), Bull. Volc., v. 2 (18), p. 133–137.Google Scholar
  5. Baker, B. H., 1963, Geology and mineral resources of the Seychelles Archipelago, Geol. Surv. Kenya, Mem. 3, p. 1–140.Google Scholar
  6. Baker, B. H., and Miller, J. A., 1963, Geology and geochronology of the Seychelles islands and the structure of the floor of the Arabian Sea, Nature, v. 199, p. 346–348.Google Scholar
  7. Barazangi, M., and Dorman, J., 1969, World seismicity maps compiled from ESSA Coast and Geodetic Survey epicenter data, Bull. Seism. Soc. Amer., v. 59, p. 369–380.Google Scholar
  8. Barberi, F., and Varet, J. 1977, Volcanism of Afar: small scale plate tectonics implications,Geol. Soc. Amer. Bull. v. 88, p. 1251–1266.Google Scholar
  9. Barker, P. F., 1966, A reconnaissance survey of the Murray Ridge, Phil. Trans. Roy. Soc., London, v. A. 259, p. 187–197.Google Scholar
  10. Barrett, D. M., 1977, Agulhas Plateau off southern Africa: a geophysical study, Geol. Soc. Amer. Bull., v. 88, p. 749–763.Google Scholar
  11. Baxter, A. N., 1975, Petrology of the older series lavas from Mauritius, Indian Ocean, Geol. Soc. Amer. Bull., v. 86, p. 1449–1458.Google Scholar
  12. Baxter, A. N., 1976, Geochemistry and petrogenesis of primitive alkali basalt from Mauritius, Indian Ocean, Geol. Soc. Amer. Bull., v. 87, p. 1028–1034.Google Scholar
  13. Bellair, P., 1964, Recent data on the geology of Iles Crozet, in: Antarctic Geology, Adie, R. J., ed., Amsterdam, North Holland Publishing Company, p. 3–7.Google Scholar
  14. Ben Avraham, Z., and Bunce, E. T., 1977, Geophysical study of the Chagos—Laccadive Ridge, Indian Ocean, J. Geophys. Res., v. 82, p. 1295–1305.Google Scholar
  15. Berggren, W. H., 1972, A cenozoic time scale. Some implications for regional geology and paleobiogeography, Lethaia, v. 5, p. 195–215.Google Scholar
  16. Bergh, H. W., 1971, Sea-floor spreading in the southwest Indian Ocean, J. Geophys. Res., v. 76, p. 6276–6282.Google Scholar
  17. Bergh, H. W., 1977, Mesozoic sea-floor off Dronning Maud Land, Antarctica, Nature, v. 269, p. 686–687.Google Scholar
  18. Bergh, H. W., and Norton, I. 0., 1976, Prince Edward Fracture Zone and the evolution of the Mozambique Basin, J. Geophys. Res., v. 81, p. 5221–5239.Google Scholar
  19. Bezrukov, P. L., and Kanaev, V. P., 1963, Principal structural features of the bottom of the northeastern part of the Indian Ocean, Dokl. Akad. Nauk., S.S.S.R., v. 153 (4), p. 926–929Google Scholar
  20. Bowin, C., 1973, Origin of the Ninetyeast Ridge from studies near the Equator, J. Geophys. Res., v. 78, p. 6029–6043.Google Scholar
  21. Bowin, C., and Vogt, P. R., 1966, Magnetic lineation between Carlsberg Ridge and Seychelles Bank, Indian Ocean, J. Geophys. Res., v. 71, p. 2625–2630.Google Scholar
  22. Bunce, E. T., 1974, Underway observations Leg 24, GLOMAR CHALLENGER, Part I: Djibouti to Seychelles islands, in: Initial Reports of the Deep Sea Drilling Project, v. 24, p. 591–605.Google Scholar
  23. Bunce, E. T., Bowin, C. O., and Chase, R. L., 1966, Preliminary results of the 1964 cruise of R. V. Chain to the Indian Ocean, Phil. Trans. R.y. Soc. London, v. A. 259, p. 218–226.Google Scholar
  24. Bunce, E. T., Langseth, M. G., Chase, R. L., and Ewing, M., 1967, Structure of the Western Somali Basin, J. Geophys. Res., v. 72, p. 2547–2555.Google Scholar
  25. Bunce, E. T., Fisher, R. L., Cernock, P. J., Clegg, D. C., Cronan, D. S., Damiani, V., Dmitriev, L. V., Kinsman, D. J. J., Roth, P. H., Thiede, J., and Vincent, E., 1974a, Site 231, in: Initial Reports of the Deep Sea Drilling Project, v. 24, p. 17–125.Google Scholar
  26. Bunce, E. T., Fisher, R. L., Cernock, P. J., Clegg, D. C., Cronan, D. S., Damiani, V., Dmitriev, L. V., Kinsman, D. J. J., Roth, P. H., Thiede, J., and Vincent, E., 1974b, Site 234, in: Initial Reports of the Deep Sea Drilling Project, v. 24, p. 249–281.Google Scholar
  27. Bunce, E. T., and Molnar, P., 1977, Seismic reflection profiling and basement topography in the Somali Basin: possible fracture zones between Madagascar and Africa, J. Geophys. Res., v. 82, p. 5305–5311.Google Scholar
  28. Bungenstock, H., Closs, H., and Hinz, K., 1966, Seismische Untersuchungen im nördlichen Teil des Arabischen Meeres (Gulf von Oman), Erdöl, Kohle, Erdgas Petrochimie, v. 19 (4), p. 237–243.Google Scholar
  29. Burkle, L. H., Saito, T., and Ewing, M., 1967, A Cretaceous (Turonian) core from the Naturaliste Plateau southeast Indian Ocean, Deep-Sea Res., v. 14, p. 421–426.Google Scholar
  30. Cann, J. R., and Vine, F. J., 1966, An area on the crest of the Carlsberg Ridge: Petrology and magnetic survey, Phil. Trans, Roy. Soc. London, v. A. 259, p. 198–217.Google Scholar
  31. Carpenter, G., and Ewing, J., 1973, Crustal deformation in the Wharton Basin, J. Geophys. Res., v. 78, p. 846–850.Google Scholar
  32. Chamalaun, F. H., and McDougall, I., 1966, Dating geomagnetic polarity epochs in Réunion, Nature, v. 210, p. 1212–1214.Google Scholar
  33. Cheminee, J. L., and Nougier, J., 1972, Distribution of Uranium, Thorium and Potassium in the volcanic suites of Iles Kerguelen, in: Antarctic Geology and Geophysics, Adie, R. J., ed., Oslo, Universitetsforlaget, p. 817–823.Google Scholar
  34. Chetty, P., and Green, R. W. E., 1977, Seismic refraction observations in the Transkei Basin and adjacent areas, Marine Geophys. Res., v. 3, p. 197–208.Google Scholar
  35. Closs, H., Bungenstock, H., and Hinz, K., 1969, Ergebnisse seismischer Untersuchungen im nördlichen arabischen Meer, ein Beitrag zur internationalen indischen Ozean Expedition, Meteor Forschungs Ergebnisse, v. C(2), p. 1–28.Google Scholar
  36. Courtillot, V. E., 1980, Opening of the Gulf of Aden and Afar by progressive tearing, Phys. Earth Planet. Inter., v. 21, p. 343–350.Google Scholar
  37. Courtillot, V. E., and Le Mouel, J. L., 1978, Le levé aéromagnétique de la République de Djibouti, I.P.G.P., Observations Magnétiques, v. 34, p. 1–39.Google Scholar
  38. Courtillot, V. E., Galdeano, A., and Le Mouel, J. L., 1980, Propagation of an accreting plate boundary: a discussion of new aeromagnetic data in the Gulf of Tadjurah and Southern Afar, Earth Planet. Sci. Lett., v. 47, p. 144–160.Google Scholar
  39. Crawford, H. R., 1969, India, Ceylon, and Pakistan: new age data and comparisons with Australia, Nature, v. 223, p. 380–384.Google Scholar
  40. Darracott, B. W., 1974, On the crustal structure and evolution of Southeastern Africa and the adjacent Indian Ocean, Earth Planet. Sci. Lett., v. 24, p. 282–290.Google Scholar
  41. Davies, D., and Francis, T. J. G., 1964, The crustal structure of the Seychelles Bank, Deep-Sea Res., v. 11, p. 921–927.Google Scholar
  42. Davies, T. A., Luyendyk, B. P., Rodolfo, K. S., Kempe, D. R. C., McKelvey, B. C., Leidy, R. D., Horvath, G. J., Hyndman, R. D., Thierstein, H. R., Herb, R. C., Boltovskoy, E., and Doyle, P., 1974, in: Initial Reports of the Deep Sea Drilling Project, v. 26, p. 1–1129.Google Scholar
  43. Davies, T. A., Luyendyk, B. P., Rodolfo, K. S., Kempe, D. R. C., McKelvey, B. C., Leidy, R. D., Horvath, G. J., Hyndman, R. D., Thierstein, H. R., Herb, R. C., Boltovskoy, E., and Doyle, P., 1974a, Site 250, in: Initial Reports of the Deep Sea Drilling Project, v. 26, p. 21–73.Google Scholar
  44. Davies, T. A., Luyendyk, B. P., Rodolfo, K. S., Kempe, D. R. C., McKelvey, B. C., Leidy, R. D., Horvath, G. J., Hyndman, R. D., Thierstein, H. R., Herb, R. C., Boltovskoy, E., and Doyle, P., 1974b, Site 251, in: Initial Reports of the Deep Sea Drilling Project, v. 26, p. 75–134.Google Scholar
  45. Davies, T. A., Luyendyk, B. P., Rodolfo, K. S., Kempe, D. R. C., McKelvey, B. C., Leidy, R. D., Horvath, G. J., Hyndman, R. D., Thierstein, H. R., Herb, R. C., Boltovskoy, E., and Doyle, P., 1974c, Site 255, in: Initial Reports of the Deep Sea Drilling Project, v. 26, p. 281–294.Google Scholar
  46. Davies, T. A., Luyendyk, B. P., Rodolfo, K. S., Kempe, D. R. C., McKelvey, B. C., Leidy, R. D., Horvath, G. J., Hyndman, R. D., Thierstein, H. R., Herb, R. C., Boltovskoy, E., and Doyle, P., 1974d, Site 258, in: Initial Reports of the Deep Sea Drilling Project, v. 26, p. 359–414.Google Scholar
  47. Denis-Clocchiatti, M., and Leclaire, L., 1978, Mouvements verticaux d’une ride aséismique: une approche sédimentologique, C. R. Somm. Soc. Geol. France, fasc. 5, p. 258–261.Google Scholar
  48. Detrick, R. S., Sclater, J. G., and Thiede, J., 1977, The subsidence of aseismic ridges, Earth Planet. Sci. Lett., v. 34, p. 185–196.Google Scholar
  49. Dietz, R., and Holden, J., 1970, Reconstruction of Pangea: Breakup and dispersion of continents, Permian to Present, J. Geophys. Res., v. 75, p. 4939–4956.Google Scholar
  50. Dietz, R., and Holden, J. C., 1971, Pre-Mesozoic oceanic crust in the eastern Indian Ocean, Nature, v. 229, p. 309–312.Google Scholar
  51. Dixey, F., 1959, The geology and Geomorphology of Madagascar and a comparison with Eastern Africa, Q. J. Geol. Soc., London, v. 116, p. 255–268.Google Scholar
  52. Dosso, L., Vidal, P., Cantagrel, J. M., Lameyre, J., Marot, A., and Zimine, S., 1979, “Kerguelen: continental fragment or oceanic island?”: Petrology and isotopic geochemistry evidence, Earth Planet. Sci. Lett., v. 43, p. 46–60.Google Scholar
  53. Drake, C. L., and Girdler, R. W., 1964, A geophysical study of the Red Sea, Geophys. J. R. Astr. Soc., v. 8., p. 473–495.Google Scholar
  54. Dreux, P., and Remy, J. M., 1963, Les manifestations volcaniques de l’île de la Possession (archipel des Crozet), C. R. Acad. Sci., Paris, v. 257, p. 2517–2518.Google Scholar
  55. Du Toit, A. L., 1937, Our Wandering Continents, Oliver and Boyd, ed., Edinburgh, p. 1–366. Embleton, B. J. J., and McElhinny, M. W., 1975, The paleoposition of Madagascar: Paleo-magnetic evidence from the Isalo Group, Earth Planet. Sci. Lett., v. 27, p. 329–341.Google Scholar
  56. Engel, C. G., and Fisher, R. L., 1969, Lherzolite, anorthosite, gabbro, and basalt dredged from the Mid-Indian Ocean Ridge, Science, v. 166, p. 1136–1141.Google Scholar
  57. Engel, C. G., and Fisher, R. L., 1975, Granitic to ultramafic rock complexes of the Indian Ocean ridge system, Western Indian Ocean, Geol. Soc. Amer. Bull., v. 86, p. 1553–1578.Google Scholar
  58. Erlank, A. J., and Reid, D. L., 1974, Geochemistry, mineralogy, and petrology of basalts, Leg 25, Deep Sea Drilling Project, in: Initial Reports of the Deep Sea Drilling Project, v. 25, p. 543–551.Google Scholar
  59. Ewing, M., and Heezen, B. C., 1960, Continuity of mid-oceanic ridge and rift valley in the Southwestern Indian Ocean confirmed, Science, v. 131, p. 1677–1678.Google Scholar
  60. Ewing, M., Eittreim, S., Truchan, M., and Ewing, J. I., 1969, Sediment distribution in the Indian Ocean, Deep-Sea Res., v. 16, p. 231–248.Google Scholar
  61. Exon, N. F., and Willcox, J. B., 1978, Geology and petroleum potential of Exmouth Plateau area off Western Australia, Bull. Amer. Assoc. Petrol. Geol., v. 62, p. 40–72.Google Scholar
  62. Falvey, D. A., 1972, Sea-floor spreading in the Wharton Basin (Northeast Indian Ocean) and the breakup of Eastern Gondwanaland, J. Austr. Petrol. Explor. Assoc., v. 12, p. 86–88.Google Scholar
  63. Falvey, D. A., and Veevers, J. J., 1974, Physiography of the Exmouth and Scott plateaus, Western Australia, and adjacent Northeast Wharton Basin, Marine Geology, v. 17, p. 21–59.Google Scholar
  64. Fisher, R. L., 1974, Underway observations Leg 24, GLOMAR CHALLENGER, Part II: Seychelles Bank to Port Louis, Mauritius, 5–26 June 1972, in: Initial Reports of the Deep Sea Drilling Project, v. 24, p. 606–635.Google Scholar
  65. Fisher, R. L., Johnson, G. L., and Heezen, B. C., 1967, Mascarene Plateau, Western Indian Ocean, Geol. Soc. Amer. Bull., v. 78, p. 1247–1266.Google Scholar
  66. Fisher, R. L., Engel, C. G., and Hilde, T. W. C., 1968, Basalts dredged from the Amirante Ridge, Western Indian Ocean, Deep-Sea Res., v. 15, p. 521–534.Google Scholar
  67. Fisher, R. L., Sclater, J. G., and McKenzie, D. P., 1971, Evolution of the Central Indian Ridge, Western Indian Ocean, Geol. Soc. Amer. Bull., v. 82, p. 553–562.Google Scholar
  68. Fisher, R. L., Bunce, E. T., Cernock, P.J., Clegg, D.C., Cronan, D. S., Damiani, V., Dmitriev, L. V., Kinsman, D. J. J., Roth, P. H., Thiede, J., and Vincent, E., 1974, Initial Reports of the Deep Sea Drilling Project, v. 24, p. 1–1183.Google Scholar
  69. Fisher, R. L., Bunce, E. T., Cernock, P. J., Clegg, D. C., Cronan, D. S., Damiani, V., Dmitriev, L. V., Kinsman, D. J. J., Roth, P. H., Thiede, J., and Vincent, E., 1974a, Site 236, in: Initial Reports of the Deep Sea Drilling Project, v. 24, p. 327–389.Google Scholar
  70. Fisher, R. L., Bunce, E. T., Cernock, P. J., Clegg, D. C., Cronan, D. S., Damiani, V., Dmitriev, L. V., Kinsman, D. J. J., Roth, P. H., Thiede, J., and Vincent, E., 1974b, Site 237, in: Initial Reports of the Deep Sea Drilling Project, v. 24, p. 391–406.Google Scholar
  71. Fisher, R. L., Bunce, E. T., Cernock, P. J., Clegg, D. C., Cronan, D. S., Damiani, V., Dmitriev, L. V., Kinsman, D. J. J., Roth, P. H., Thiede, J., and Vincent, E., 1974c, Site 238, in: Initial Reports of the Deep Sea Drilling Project, v. 24, p. 469–587.Google Scholar
  72. Flores, G., 1970, Suggested origin of the Mozambique Channel, Geol. Soc. S. Africa Trans., v. 73, p. 1–16.Google Scholar
  73. Flower, M. J. F., and Strong, D. F., 1969, The significance of sandstone inclusions in lavas of the Comores archipelago, Earth Planet. Sci. Lett., v. 7, p. 47–50.Google Scholar
  74. Francheteau, J., and Le Pichon, X., 1972, Marginal fracture zones as structural framework of continental margins in South Atlantic Ocean, Bull. Amer. Assoc. Petrol. Geol., v. 56, p. 991–1007.Google Scholar
  75. Francis, T. J. G., Davies, D., and Hill, M., 1966, Crustal structure between Kenya and the Seychelles, Phil. Trans. Roy. Soc. London, v. A. 259, p. 240–261.Google Scholar
  76. Francis, T. J. G., and Shor, G. G., 1966, Seismic refraction measurements in the northwest Indian Ocean, J. Geophys. Res., v. 71, p. 427–449.Google Scholar
  77. Francis, T. J. G., and Raitt, R. W., 1967, Seismic refraction measurements in the Southern Indian Ocean, J. Geophys. Res., v. 72, p. 3015–3042.Google Scholar
  78. Frey, F., and Sung, C. M., 1974, Geochemical results for basalts from sites 253 and 254, in: Initial Reports of the Deep Sea Drilling Project, v. 26, p. 567–572.Google Scholar
  79. Girdler, R. W., 1963, Geophysical studies of rift valleys, Phys. Chem. Earth, v. 5, p. 121–156. Girdler, R. W., 1970, An aeromagnetic survey of the junction of the Red Sea, Gulf of Aden and Ethiopan rifts, Phil. Trans. Roy. Soc. London, v. A. 267, p. 359–368.Google Scholar
  80. Girdler, R. W., and Styles, P., 1974, Two stages Red Sea floor spreading, Nature, v. 247, p. 7–11.Google Scholar
  81. Girdler, R. W., and Styles, P., 1978, Seafloor spreading in the western Gulf of Aden, Nature, v. 271, p. 615–617.Google Scholar
  82. Goslin, J., 1979, Résultats de gravimétrie sur les monts sous-marins du Marion Dufresne, de la Léna et de l’Ob (Océan Indien Austral), C. R. Acad. Sci., Paris, v. 288 (B), p. 241–244.Google Scholar
  83. Goslin, J., Segoufin, J., Schlich, R., and Fisher, R. L., 1980, Submarine topography and shallow structure of the Madagascar Ridge, Western Indian Ocean, Geol. Soc. Amer. Bull., v. 91, p. 741–753.Google Scholar
  84. Goslin, J., and Schlich, R., 1982, Structural limits of the South Crozet Basin-Relations to Enderby Basin and the Kerguelen-Heard Plateau, in: Antarctic Geoscience, Craddock, C., ed. IUGS B4, pp. 79–85.Google Scholar
  85. Graham, K. W. T., and Hales, A. L., 1965, Surface ship gravity measurements in the Agulhas Bank area, south of South Africa, J. Geophys. Res., v. 70, p. 4005–4011.Google Scholar
  86. Green, A. G., 1972, Seafloor spreading in the Mozambique Channel, Nature, v. 236, p. 19–21. Green, R. W. E., and Hales, A. L., 1966, Seismic refraction measurements in the Southwestern Indian Ocean, J. Geophys. Res., v. 71, p. 1637–1647.Google Scholar
  87. Gunn, B. M., Coy-Yll, R., Watkins, N. D., Abranson, E. C., and Nougier, J., 1970, Geochemistry of an oceanite-ankaramite-basalt suite from East Island, Crozet Archipelago, Contr. Miner. Petrol., v. 28, p. 319–339.Google Scholar
  88. Gunn, B. M., Abranson, E. C., Watkins, N. D., and Nougier, J., 1972, Petrology and geochemistry of Iles Crozet: a summary, in: Antarctic Geology and Geophysics, Adie, R. J., ed., Oslo, Universitetsforlaget, p. 825–829.Google Scholar
  89. Hales, A. L., and Nation, J. B., 1972, A Crustal structure profile on the Agulhas Bank, Bull. Seism. Soc. Amer., v. 62, p. 1029–1051.Google Scholar
  90. Hales, A. L., and Nation, J. B., 1973, A seismic refraction study in the Southern Indian Ocean Bull Seism. Soc. Amer., v. 63, p. 1951–1966.Google Scholar
  91. Harbison, R. N., and Bassinger, B. G., 1973, Marine Geophysical study off Western India, J. Geophys. Res., v. 78, p. 432–440.Google Scholar
  92. Hayes, D. E., and Talwani, M., 1972, Geophysical investigation of the Macquarie ridge com-plex, in: Antarctic Oceanology II: The Australian-New Zealand Sector, Antarctic Res. Ser., v. 19, Hayes, D. E., ed., AGU, Washington D.C., p. 211–234.Google Scholar
  93. Hayes, D. E., Frakes, L. A., Barrett, P. J., Burns, D. A., Pei-Hsin Chen, Ford, A. B., Kaneps, A. G., Kemp, E. M., McCollum, D. W., Piper, D. J. W., Wall, R. E., and Webb, P. N., 1975, Initial Reports of the Deep Sea Drilling Project, v. 27, p. 1–1017.Google Scholar
  94. Hayes, D. E., Frakes, L. A., Barrett, P. J., Burns, D. A., Pei-Hsin Chen, Ford, A. B. Kaneps, A. G., Kemp, E. M., McCollum, D. W., Piper, O. J. W., Wall, R. E., and Webb, P. N., 1975a, Site 264, in: Initial Reports of the Deep Sea Drilling Project, v. 28, p. 19–48.Google Scholar
  95. Hayes, D. E., Houtz, R., Talwani, M., Watts, A. B., Weissel, J., and Aitken, T., 1976, U.S.N.S. Eltanin cruises 39–45, June 1969-October 1970 Lamont-Doherty Geological Observatory Technical Report, n° CU-2–76.Google Scholar
  96. Hayes, D. E., Weissel, J., Aitken, T., Houtz, R., Talwani, M., and Watts, A. B., 1977U.S.N.S. Eltanin cruises 46–50, November 1970-January 1972 Lamont-Doherty Geological Observatory Technical Report, n° CU-1–77.Google Scholar
  97. Hayes, D. E., Weissel, J., Aitken, T., Houtz, R., Talwani, M. Schearer, R. A., and Watts, A. B., 1978, U.S.N.S. Eltanin cruises 51–55A, January 1972-December 1972, Lamont-Doherty Geological Observatory Technical Report n° CU-1–78.Google Scholar
  98. Heezen, B. C., and Nafe, J. E., 1964, Vema Trench: Western Indian Ocean, Deep-Sea Res., v. 11, p. 79–84.Google Scholar
  99. Heezen, B. C., and Tharp, M., 1965, Physiographic diagram of the Indian Ocean (with descriptive sheet), Geol. Soc. Amer. Inc., New York.Google Scholar
  100. Heezen, B. C., and Tharp, M., 1966, Physiography of the Indian Ocean, Phil. Trans. Roy. S. London, v. A. 259, p. 137–149.Google Scholar
  101. Heirtzler, J. R., Dickson, G. O., Herron, E. M., Pitman, W. C., and Le Pichon, X., 1968, Marine magnetic anomalies, geomagnetic field reversals, and motions of the ocean floor and continents, J. Geophys. Res., v. 73, p. 2119–2136.Google Scholar
  102. Heirtzler, J. R., and Burroughs, R. H., 1971, Madagascar’s Paleoposition: New data from the Mozambique Channel, Science, v. 174, p. 488–490.Google Scholar
  103. Heirtzler, J. R., Veevers, J. V., Bolli, H. M., Carter, A. N., Cook, P. J., Krasheninnikov, V. A., McKnight, B. K., Proto-Decima, F., Renz, G. W., Robinson, P. T., Rocker, K., Jr., and Thayer, P. A., 1974, Site 261, in: Initial Reports of the Deep Sea Drilling Project, v. 27, p. 129–192.Google Scholar
  104. Hekinian, R., 1974a, Petrology of the Ninetyeast Ridge (Indian Ocean) compared to other aseismic ridges, Contr. Mineral. and Petrol., v. 43, p. 125–147.Google Scholar
  105. Hekinian, R., 19746, Petrology of ignous rocks from Leg 22 in the northeastern Indian Ocean, in: Initial Reports of the Deep Sea Drilling Project, v. 22, p. 413–448.Google Scholar
  106. Houtz, R. E., Hayes, D. E., and Markl, R. G., 1977, Kerguelen Plateau bathymetry, sediment distribution and crustal structure, Marine Geology, v. 25, p. 95–130.Google Scholar
  107. Johnson, B. D., Powell, C. McA., and Veevers, J. J., 1976, Spreading history of the Eastern Indian Ocean and Greater India’s northward flight from Antarctica and Australia, Geol. Soc. Amer. Bull., v. 87, p. 1560–1566.Google Scholar
  108. Johnson, B. D., Powell, C., McA, and Veevers, J. J., 1980, Early spreading history of the Indian Ocean between India and Australia, Earth Planet. Sci. Lett., v. 47, p. 131–143.Google Scholar
  109. Kempe, D. R., 1974, The petrology of the basalts, Leg 26, in: Initial Reports of the Deep Sea Drilling Project, v. 26, p. 465–504.Google Scholar
  110. Kent, P. E., 1972, Mesozoic history of the east coast of Africa, Nature, v. 238, p. 147–148. Kieffer, G., Tricot, B., and Vincent, P. M., 1977, Une éruption inhabituelle (avril 1977) du Piton de la Fournaise (île de la Réunion): ses enseignements volcanologiques et structuraux, C. R. Acad. Sci., Paris, v. 285 (D), p. 957–960.Google Scholar
  111. Kornprobst, J., Boivin, P., and Bachelery, P., 1979, L’alimentation des éruptions récentes du Piton de la Fournaise (île de la Réunion, Océan Indien): degré d’évolution et niveau de ségrégation des laves émises, C. R. Acad. Sci., Paris, v. 188 (D), p. 1691–1694.Google Scholar
  112. Lambeth, A. J., 1952, A geological account of Heard Island, J. Roy, Soc., N.S.W., v. 85, p. 14–24.Google Scholar
  113. Langseth, M. G., and Taylor, P. T., 1967, Recent heat flow measurements in the Indian Ocean, J. Geophys. Res., v. 72, p. 6249–6260.Google Scholar
  114. Larson, R. L., 1975, Late Jurassic seafloor spreading in the Eastern Indian Ocean Geology, v. 3, p. 69–71.Google Scholar
  115. Larson, R. L., 1977, Early Cretaceous breakup of Gondwanaland off Western Australia, Geology, v. 5, p. 57–60.Google Scholar
  116. Larson, R. L., and Chase, C. G., 1972, Late Mesozoic evolution of the Western Pacific Ocean, Geol. Soc. Amer. Bull., v. 83, p. 3627–3644.Google Scholar
  117. Larson, R. L., and Pitman, W. C., 1972, World wide correlation of Mesozoic magnetic anomalies and its implications, Geol. Soc. Amer. Bull., v. 83, p. 3645–3661.Google Scholar
  118. Larson, R. L., and Hilde, T. W. C., 1975, A revised time scale of magnetic reversals for the Early Cretaceous and Late Jurassic, J. Geophys. Res., v. 80, p. 2586–2594.Google Scholar
  119. Larson, R. L., Carpenter, G. B., and Diebold, J. B., 1978, A geophysical study of the Wharton Basin near the Investigator Fracture Zone, J. Geophys. Res., v. 83, p. 773–782.Google Scholar
  120. Larson, R. L., Mutter, J. C., Diebold, J. B., and Carpenter, G. B., 1979, Cuvier Basin: a product of ocean crust formation by Early Cretaceous rifting off Western Australia, Earth Planet. Sci. Lett., v. 45, p. 105–114.Google Scholar
  121. Laughton, A. S., 1966, The Gulf of Aden, Phil. Trans. Roy. Soc. London, v. A.259, p. 150–171. Laughton, A. S., and Tramontini, C., 1969, Recent studies of the crustal structure in the Gulf of Aden, Tectonophysics, v. 8, p. 359–375.Google Scholar
  122. Laughton, A. S., Matthews, D. H., and Fisher, R. L., 1970a, The structure of the Indian Ocean, in: The Sea, Maxwell, A. E., ed., New York: Wiley-Interscience, v. 4, p. 543–586.Google Scholar
  123. Laughton, A. S., Whitmarsh, R. B., and Jones, M. T., 1970b, The evolution of the Gulf of Aden, Phil. Trans. Roy. Soc. London, v. A. 267, p. 227–266.Google Scholar
  124. Le Pichon, X., 1968, Sea-floor spreading and continental drift, J. Geophys. Res., v. 73, p. 3661–3697.Google Scholar
  125. Le Pichon, X., and Heirtzler, J. R., 1968, Magnetic anomalies in the Indian Ocean and sea-floor spreading, J. Geophys. Res., v. 73, p. 2101–2117.Google Scholar
  126. Lepine, J. C., Steinmetz, L., and Ruegg, J. C., 1972, Seismic profiles in the Djibouti area, Tectonophysics, v. 15, p. 59–64.Google Scholar
  127. Lepine, J. C., Richard, O., Ruegg, J. C., Treuil, M., and Varet, J., 1976, Mise en évidence d’une zone de faille transformante reliant la vallée axiale de la dorsale de Tadjoura à celle de Ghoubbet-Assal (TFAI), C.R. Acad. Sci., Paris, v. 283 (D), p. 9–12.Google Scholar
  128. Lepine, J. C., and Ruegg, J. C., 1976, La sismicité du T.F.A.L, Bull. Soc. Geol. France, Ser. 7, v. 18, p. 841–846.Google Scholar
  129. Lort, J. M., Limond, W. Q., Segoufin, J., Patriat, Ph., Delteil, J. R., and Damotte, B., 1979, New seismic data in the Mozambique Channel, Marine Geophys. Research, v. 4, p. 71–89.Google Scholar
  130. Ludwig, W. J., Nafe, J. E., Simpson, E. S. W., and Sacks, S, 1968, Seismic refraction measurements on the Southeast African Continental Margin, J. Geophys. Res., v. 73, p. 3707–3719.Google Scholar
  131. Luyendyk, B. P., 1974, Geophysical measurements along the track of D. V. Glomar Challenger, Leg 26, Deep Sea Drilling Project, Southern Indian Ocean, in: Initial Reports of the Deep Sea Drilling Project, v. 26, p. 417–449.Google Scholar
  132. Luyendyk, B. P., Davies, T. A., Rodolfo, K. S., Kempe, D. R. C., McKelvey, B. C., Leidy, R. D., Horvath, G. J., Hyndman, R. D., Theirstein, H. R., Boltovskoy, E., and Doyle, P., 1973, Leg 26, Deep Sea Drilling Project: Across the Southern Indian Ocean aboard Glomar Challenger, Geotimes, v. 18, p. 16–19.Google Scholar
  133. Luyendyk, B. P., and Davies, T. A., 1974, Results of DSDP Leg 26 and the geologic history of the Southern Indian Ocean, in: Initial Reports of the Deep Sea Drilling Project, v. 26, p. 909–943.Google Scholar
  134. Luyendyk, B. P., and Rennick, W., 1977, Tectonic history of aseismic ridges in the Eastern Indian Ocean, Geol. Soc. Amer. Bull., v. 88, p. 1347–1356.Google Scholar
  135. McDougall, I., 1971, The geochronology and evolution of the young volcanic island of Reunion, Indian Ocean, Geochim. Cosmochim. Acta, v. 35, p. 261–288.Google Scholar
  136. McDougall, I., and Compston, W., 1965, Strontium isotopic composition and potassium-rubidium ratios in some rocks from Reunion and Rodriguez, Indian Ocean, Nature, v. 207, p. 252–253.Google Scholar
  137. McDougall, I., Upton, B. G. J., and Wadsworth, W. J., 1965, A geological reconnaissance of Rodriguez Island, Indian Ocean, Nature, v. 206, p. 26–27.Google Scholar
  138. McDougall, I., and Chamalaun, F. H., 1969, Isotopic dating and geomagnetic polarity studies on volcanic rocks from Mauritius, Indian Ocean, Geol. Soc. Amer. Bull., v. 80, p. 1419–1442.Google Scholar
  139. McElhinny, M. W., 1970, Formation of the Indian Ocean, Nature, v. 228, p. 977–979.Google Scholar
  140. McElhinny, M. W., Embleton, B. J., Daly, L., and Pozzi, J. P., 1976, Paleomagnetic evidence for the location of Madagascar in Gonwanaland, Geology, v. 4, p. 455–457.Google Scholar
  141. McKenzie, D. P., Davies, D., and Molnar, P., 1970, Plate tectonics of the Red Sea and East Africa, Nature, v. 226, p. 243–248.Google Scholar
  142. McKenzie, D. P., and Sclater, J. G., 1971, The evolution of the Indian Ocean since the Late Cretaceous, Geophys. J. R., Astr. Soc., v. 25, p. 437–528.Google Scholar
  143. Markl, R. G., 1974a, Evidence for the breakup of eastern Gondwanaland by the Early Cretaceous, Nature, v. 251, p. 196–200.Google Scholar
  144. Markl, R. G., 1974b, Bathymetric map of the Eastern Indian Ocean, in: Initial Reports of the Deep Sea Drilling Project, v. 26, p. 967–968.Google Scholar
  145. Markl, R. G., 1978a, Further evidence for the Early Cretaceous breakup of Gondwanaland off Southwestern Australia, Marine Geology, v. 26, p. 41–48.Google Scholar
  146. Markl, R. G., 1978b, Basement morphology and rift geometry near the former junction of India, Australia, and Antarctica, Earth Planet. Sci. Lett., v. 39, p. 211–225.Google Scholar
  147. Matthews, D. H., 1963, A major fault scarp under the Arabian Sea displacing the Carlsberg Ridge near Socotra, Nature, v. 198, p. 950–952.Google Scholar
  148. Matthews, D. H., 1966, The Owen fracture zone and the northern end of the Carlsberg ridge, Phil. Trans. Roy. Soc. London, v. A. 259, p. 172–186.Google Scholar
  149. Matthews, D. H., Vine, F. J., and Cann, J. R., 1965, Geology of an area of the Carlsberg Ridge, Geol. Soc. Amer. Bull., v. 76, p. 675–682.Google Scholar
  150. Matthews, D. H., and Davies, D., 1966, Geophysical studies of the Seychelles Bank, Phil. Trans. Roy. Soc. London, v. A. 259, p. 227–239.Google Scholar
  151. Matthews, D. H., Williams, C, and Laughton, A. S., 1967, Mid-Ocean ridge in the mouth of the Gulf of Aden, Nature, v. 215, p. 1052–1053.Google Scholar
  152. Miller, J. A., and Mudie, J. D., 1961, Potassium-argon age determinations on granite from the island of Mahé in the Seychelles Archipelago, Nature, v. 192, p. 1174–1175.Google Scholar
  153. Morgan, W. J., 1972a, Plate motions and deep mantle convection, Geol. Soc. Amer. Mem., 132, p. 7–22.Google Scholar
  154. Morgan, W. J., 1972b, Deep mantle convection plumes and plate motions, Bull. Amer. Assoc. Petrol. Geol., v. 56, p. 203–213.Google Scholar
  155. Naini, B. R., and Leyden, R, 1973, Ganges Cone: a wide angle seismic reflection and refraction study, J. Geophys. Res., v. 78, p. 8711–8720.Google Scholar
  156. Naini, B. R., and Chute, J., 1974, Geophysical investigations around DSDP site 251, Southwestern Indian Ocean, in: Initial Reports of the Deep Sea Drilling Project, v. 25, p. 959–966.Google Scholar
  157. Noprochnov, Y. P., 1961, Sediment thicknesses in the Arabian Basin. Dokl. Akad. Nauk., U.S.S.R., v. 139(1), p. 177–179.Google Scholar
  158. Norton, I. O., 1976, The present relative motion between Africa and Antarctica, Earth Planet, Sci. Lett., v. 33, p. 219–230.Google Scholar
  159. Norton, I. O., and Sclater, J. G., 1979, A model for the evolution of the Indian Ocean and the breakup of Gondwanaland, J. Geophys. Res., v. 84, p. 6803–6830.Google Scholar
  160. Nougier, J., 1963, Les phases volcaniques successives dans la péninsule Rallier-du-Baty (archipel de Kerguelen), C.R. Acad. Sci., Paris, v. 256, p. 4054–4056.Google Scholar
  161. Nougier, J., 1966, Esquisse géologique de la péninsule Rallier-du-Baty, archipel de Kerguelen, Terres Australes et Antarctiques Françaises, Bull. Soc. Geol. France, Ser. 7, v. 8, p. 567–576.Google Scholar
  162. Nougier, J., 1970, Contribution à l’étude géologique et géomorphologique des îles Kerguelen (T.A.A.F.), Comité National Français, Recherches Antarctiques, v. 27, p. 1–440. Nougier, J., 1972a, Geochronology of the volcanic activity in Iles Kerguelen, in: Antarctique Geology and Geophysics, Adie, R. J., ed., Oslo, Universitetsforlaget, p. 803–808.Google Scholar
  163. Nougier, J., 1972b, Volcanic associations in Iles Kerguelen, in: Antarctic Geology and Geo-physics, Adie, R. J., ed., Oslo, Universitetsforlaget, p. 809–815.Google Scholar
  164. Nougier, J., and Lameyre, J., 1973, Les nordmarkites des îles Kerguelen dans leur cadre structural—Problème de leur origine et de celle de certaines roches plutoniques alcalines des domaines océaniques, Bull. Soc. Geol. France, Ser. 7, v. 15, p. 306–312.Google Scholar
  165. Obradovich, J. D., and Cobban, W. A., 1975, A time scale for the Late Cretaceous of the Western Interior of North America, in: Geol. Assoc. Canada Spec. Paper, n° 13, p. 31–54.Google Scholar
  166. Patriat, P., 1979, L’océan Indien: La dorsale ouest-Indienne in: Mémoire du Muséum National d’Histoire Naturelle, série C, t. 43, p. 49–52.Google Scholar
  167. Peirce, J. W., 1978, The northward motion of India since the Late Cretaceous, Geophys. J.R. Astr. Soc., v. 52, p. 277–311.Google Scholar
  168. Peter, G., and Dewald, O. E., 1969, Geophysical reconnaissance in the Gulf of Tadjura, Geol. Soc. Amer. Bull., v. 80, p. 2313–2316.Google Scholar
  169. Petkovic, P., 1975, Origin of the Naturaliste Plateau, Nature, v. 253, p. 30–33.Google Scholar
  170. Pitman, W. C., and Heirtzler, J. R., 1966, Magnetic anomalies over the Pacific-Antarctic Ridge, Science, v. 154, p. 1164–1171.Google Scholar
  171. Rabinowitz, P. D., Cande, S. C., and Labrecque, J. L., 1976, The Falkland Escarpment and Agulhas Fracture Zone: The boundary between oceanic and continental basement at conjugate continental margins, An. Acad. Bras. Cienc., v. 48 supl., p. 241–251.Google Scholar
  172. Razafindrazaka, G., Daly, L., Pozzi, J. P., and Black, R., 1976, Position de Madagascar dans le Gondwana à partir de l’étude magnétique des formations du Karroo, C.R. Acad. Sci., Paris, v. 282 (D), p. 17–20.Google Scholar
  173. Recq, M., Goslin, J., Patriat, P., and Schlich, R., 1979, Profil de réfraction sur le plateau malgache, résultats préliminaires, 7ème Réunion Annuelle des Sciences de la Terre, Lyon, April 1979, Abstract.Google Scholar
  174. Roberts, D. G., and Whitmarsh, R. B., 1969, A bathymetric and magnetic survey in the Gulf of Tadjura, western Gulf of Aden, Earth Planet. Sci. Lett., v. 5, p. 253–258.Google Scholar
  175. Rothé, J. P., 1954, La zone séismique médiane indo-atlantique, Proc. Roy. Soc., v. A. 222, p. 387–397.Google Scholar
  176. Ruegg, J. C., 1975, Structure profonde de la croûte et du manteau supérieur du Sud-Est de l’Afar d’après les données sismiques. Ann. Geophys, v. 31, p. 329–360.Google Scholar
  177. Schlich, R., 1974a, Sea-floor spreading history and deep-sea drilling results in the Madagascar and Mascarene basins, Western Indian Ocean, in: Initial Reports of the Deep Sea Drilling Project, v. 25, p. 663–678.Google Scholar
  178. Schlich, R., 1974b, Bathymetric, magnetic and seismic reflection data, Deep Sea Drilling Pro-ject, Leg 25, in: Initial Reports of the Deep Sea Drilling Project, v. 25, p. 763–829Google Scholar
  179. Schlich, R., 1975, Structure et âge de l’océan Indien occidental, Mém. hors-série, Soc. Géol. de France, n°6, p. 1–103.Google Scholar
  180. Schlich, R., 1979, Structure et âge de l’Océan Indien, in: Mémoire du Muséum National d’Histoire Naturelle, série C., t. 43, p. 33–37.Google Scholar
  181. Schlich, R., 1979, L’Océan Indien occidental, la dorsale est-indienne, in: Mémoire de Muséum National d’Histoire Naturelle, série C., t. 43, p. 41–47.Google Scholar
  182. Schlich, R., (1982), Structure and age of the Western Indian Ocean-Results of deep sea drilling, in: Antarctic Geoscience, C. Craddock, ed., IUGS B4, pp. 87–98.Google Scholar
  183. Schlich, R., and Patriat, P., 1967, Profils magnétiques sur la dorsale médioocéanique “Indo-Pacifique”, Ann. de Géophys., v. 23, p. 629–633.Google Scholar
  184. Schlich, R., and Patriat, P., 1968, Interprétation possible de données géophysiques recueillies sur la dorsale médio-indienne entre 20° et 40°Google Scholar
  185. Sud, C.R. Acad. Sci., Paris, v. 266(B), p. 820–822.Google Scholar
  186. Schlich, R., Delteil, J. R., Moulin, J. Patriat, P., and Guillaume, R., 1971, Mise en évidence d’une sédimentation de marge continentale sur le plateau de Kerguelen-Heard, C.R. Acad. Sci., Paris, v. 272(D), p. 2060–2063.Google Scholar
  187. Schlich, R., and Patriat, P., 1971a, Mise en évidence d’anomalies magnétiques axiales sur la branche ouest de la dorsale médio-indienne, C.D. Acad. Sci., Paris, v. 272 (D), p. 700–703.Google Scholar
  188. Schlich, R., and Patriat, P., 1971b, Anomalies magnétiques de la branche est de la dorsale médio-indienne entre les îles Amsterdam et Kerguelen, C.R. Acad. Sci., Paris, v. 272 (B), p. 773–776.Google Scholar
  189. Schlich, R., Aubertin, F., Delteil, J. R., Leclaire, L., Magnier, P., Montadert, L., Patriat, P., and Valery, P., 1972, Données nouvelles sur le substratum du bassin de Somalie à partir d’un profil de sismique-réflexion, C.R. Acad. Sci., Paris, v. 275(D), p. 1331–1334.Google Scholar
  190. Schlich, R., and Fondeur, C., 1974, Anomalies magnétiques crétacées dans le bassin des Mascareignes (Océan Indien), C.R. Acad. Sci., Paris, v. 278 (B), p. 541–544.Google Scholar
  191. Schlich, R., Simpson, E. S. W., Gieskes, J., Girdley, W. A., Leclaire, L., Marshall, B., Moore, C., Muller, C., Sigal, J., Vallier, T. L., White, S. M., and Zobel, B., 1974a, Site 239, in: Initial Reports of the Deep Sea Drilling Project, v. 25, p. 25–63.Google Scholar
  192. Schlich, R., Simpson, E. S. W., Gieskes, J. Girdley, W. A., Leclaire, L., Marshall, B. V., Moore, C., Muller, C., Sigal, J., Vallier, T. L. White, S. M., and Zobel, B., 19746, Site 241, in: Initial Reports of the Deep Sea Drilling Project, v. 25, p. 87–138.Google Scholar
  193. Schlich, R., Simpson, E. S. W., Gieskes, J., Girdley, W. A., Leclaire, L., Marshall, B., Moore, C., Muller, C., Sigal, J., Vallier, T. L., White, S. M., and Zobel, B., 1974c, Site 245, in: Initial Reports of the Deep Sea Drilling Project, v. 25, p. 187–236.Google Scholar
  194. Schlich, R., Simpson, E. S. W., Gieskes, J., Girdley, W. A., Leclaire, L., Marshall, B. V., Moore, C., Muller, C., Sigal, J., Vallier, T. L. White, S. M., and Zobel, B., 1974d, Sites 246 and 247, Initial Reports of the Deep Sea Drilling Project, v. 25, p. 237–257.Google Scholar
  195. Schlich, R., Simpson, E. S. W., Gieskes, J., Girdley, W. A., Leclaire, L., Marshall, B. V., Moore, C., Muller, C., Sigal, J., Vallier, T. L. White, S. M., and Zobel, B., 1974e, Site 248, in: Initial Reports of the Deep Sea Drilling Project, v. 25, p. 259–286.Google Scholar
  196. Schlich, R., Muller, C., and Sigal, J., 1979, Le Maestrichtien du site 239 (D.S.D.P. Océan Indien) dans son cadre régional et son incidence sur l’échelle chronologique des inversions du champ magnétique terrestre, Bull. Soc. Géol. France, Ser. 7, v. 21, p. 57–63.Google Scholar
  197. Sclater, J. G., 1966, Heat flow in the northwest Indian Ocean and Red Sea, Phil. Trans. Roy. Soc. London, v. A. 259, p. 271–278.Google Scholar
  198. Sclater, J. G., Anderson, R. N., and Bell, M. L., 1971a, Elevation of ridges and evolution of the central eastern Pacific, J. Geophys. Res., v. 76, p. 7888–7915.Google Scholar
  199. Sclater, J. G., Ritter, V., Hilton, W., Meinke, L., and Fisher, R. L., 1971b, Charts of residual magnetic field plotted along track for the Indian Ocean, Scripps Institution of Oceanography, Special Report, n° 71–7.Google Scholar
  200. Sclater, J. G., and Harrison, C. G. A., 1971, Elevation of mid-ocean ridges and the evolution of the Southwest Indian Ridge, Nature, v. 230, p. 175–177.Google Scholar
  201. Sclater, J. G., and Fisher, R. L., 1974, Evolution of the east-central Indian Ocean, with emphasis on the tectonic setting of the Ninetyeast Ridge, Geol. Soc. Amer. Bull., v. 85, p. 683–702.Google Scholar
  202. Sclater, J. G., Jarrard, R. O., McGowran, B., and Gartner, S., 1974a, Comparison of the magnetic and biostratigraphic time scales since the Late Cretaceous, in: Initial Reports of the Deep Sea Drilling Project, v. 22, p. 381–386.Google Scholar
  203. Sclater, J. G., von der Borch, C., Veervers, J. J., Hekinian, R., Thompson, R. W., Pimm, A. C., McGowran, B., Gartner, S., Johnson, D. A., 1974b, Regional synthesis of the deep sea drilling results from Leg 22 in the Eastern Indian Ocean, in: Initial Reports of the Deep Sea Drilling Project, v. 22, p. 815–831.Google Scholar
  204. Sclater, J. G., Bowin, C., Hey, R., Hoskins, H., Peirce, J., Philips, J., and Tapscott, C., 1976a, The Bouvet Triple Junction, J. Geophys. Res., v. 81, p. 1857–1869.Google Scholar
  205. Sclater, J. G., Luyendyk, B. P., and Meinke, L., 1976b, Magnetic lineations in the southern part of the Central Indian Basin, Geol. Soc. Amer. Bull., v. 87, p. 371–378.Google Scholar
  206. Sclater, J. G., Dick, H., Norton, I. O., and Woodroffe, D., 1978, Tectonic structure and petrology of the Antarctic plate boundary near the Bouvet Triple Junction, Earth Planet. Sci. Lett., v. 37, p. 393–400.Google Scholar
  207. Sclater, J. G., Fisher, R. L., Patriat, P., Tapscott, C., and Parsons, B., 1981, Eocene to recent development of the Southwest Indian Ridge, a consequence of the evolution of the Indian Ocean Triple Junction, Geophys. J.R. Astr. Soc., v. 64, p. 587–604.Google Scholar
  208. Scrutton, R. A., 1973, Structure and evolution of the sea-floor south of South Africa, Earth Planet. Sci. Lett., v. 19, p. 250–256.Google Scholar
  209. Scrutton, R. A., 1978, Davie Fracture zone and the movement of Madagascar, Earth Planet. Sci. Lett., v. 39, p. 84–88.Google Scholar
  210. Segoufin, J., 1978, Anomalies magnétiques mésozoïques dans le bassin de Mozambique, C.R. Acad. Sci., Paris, v. 287 (D), p. 109–112.Google Scholar
  211. Segoufin, J., 1979, Structure et âge du bassin de Mozambique, 7ème Réunion Annuelle des Sciences de la Terre, Lyon, April 1979, Abstract.Google Scholar
  212. Segoufin, J., Leclaire, L., and Clocchiatti, M., 1977, Les structures du canal de Mozambique. Le problème de la ride de Davie, Ann. Soc. Géol. Nord., v. 97, p. 309–314.Google Scholar
  213. Segoufin, J., and Patriat, P., 1980, Existence d’anomalies mésozoïques dans le bassin de Somalie. Implications pour les relations Afrique-Antarctique-Madagascar, C.R. Acad. Sci., Paris, v. 291 (B), p. 85–88.Google Scholar
  214. Shor, G. G., and Pollard, D. O., 1963, Seismic investigations of Seychelles and Saya de Malha banks, Northwest Indian Ocean, Science, v. 142, p. 48–49.Google Scholar
  215. Simpson, E. S. W., 1974, Chart 125A, bathymetry of the Southeast Atlantic and Southwest Indian Oceans, South Africa UCT/NRIO, South Africa.Google Scholar
  216. Simpson, E. S. W., Schlich, R., Gieskes, J. M., Girdley, W. A., Leclaire, L., Marshall, B. V., Moore, C., Muller, C., Sigal, J., Vallier, T. L. White, S. M., and Zobel, B., 1974, Initial Reports of the Deep Sea Drilling Project, v. 25, p. 1–884.Google Scholar
  217. Simpson, E. S. W., Schlich, R., Gieskes, J., Girdley, W. A., Leclaire, L., Marshall, B. V., Moore, C., Muller, C., Sigal, J., Vallier, T. L., White, S. M., and Zobel, B., 1974a, Site 249, in: Initial Reports of the Deep Sea Drilling Project, v. 25, p. 287–346.Google Scholar
  218. Simpson, E. S. W., Schlich, R., Gieskes, J., Girdley, W. A., Leclaire, L., Marshall, B. V., Moore, C., Muller, C., Sigal, J., Valuer, T. L., White, S. M., and Zobel, B., 1974b, Site 242, in: Initial Reports of the Deep Sea Drilling Project, v. 25, p. 139–176.Google Scholar
  219. Simpson, E. S. W., Sclater, J. G., Parsons, B., Norton, I., and Meinke, L., 1979, Mesozoic magnetic lineations in the Mozambique Basin, Earth Planet. Sci. Lett., v. 43, p. 260–264.Google Scholar
  220. Sinha, M. C., and Louden, K. E., 1979, A seismic refraction line on the Madagascar Rise, U.K. Geophysical Assembly, Southampton, April 1979, Abstract.Google Scholar
  221. Smith, A. G., and Hallam, A., 1970, The fit of the southern continents, Nature, v. 225, p. 139–144.Google Scholar
  222. Sowerbutts, W. T. C., 1972, Rifting in Eastern Africa and the Fragmentation of Gondwanaland, Nature, v. 235, p. 435–437.Google Scholar
  223. Stagg, H. M. J., and Exon, N. F., 1979, Western margin of Australia: Evolution of a rifted arch system: Discussion and Reply, Geol. Soc. Amer. Bull., v. 90, p. 795–798.Google Scholar
  224. Stein, S., 1978, An earthquake swarm on the Chagos-Laccadive Ridge and its tectonic impli-cations, Geophys. J.R. Astr. Soc., v. 55, p. 577–588.Google Scholar
  225. Stein, S., and Okal, E. A., 1978, Seismicity and tectonics of the Ninetyeast Ridge area: evidence for internal deformation of Indian plate, J. Geophys. Res., v. 83, p. 2233–2245.Google Scholar
  226. Stephenson, P. J., 1964, Some geological observations on Heard Island, in: Antarctic Geology,Adie, R. J., ed. Amsterdam, North Holland Publishing Company, p. 14–24.Google Scholar
  227. Stephenson, P. J., 1972, Geochemistry of some Heard Island igneous rocks, in: Antarctic Geology and Geophysics, Adie, R. J., ed., Oslo, Universitetsforlaget, p. 793–801.Google Scholar
  228. Sykes, L. R., 1970, Seismicity of the Indian Ocean and a possible nascent island arc between Ceylon and Australia, J. Geophys. Res., v. 75, p. 5041–5055.Google Scholar
  229. Sykes, L. R., and Landisman, M., 1964, Seismicity of East Africa, the Gulf of Aden and the Arabian and Red Seas, Bull. Seism. Soc. Amer., v. 54, p. 1927–1940.Google Scholar
  230. Tapponnier, P., and Varet, J., 1974, La zone de Mak’Arrasou en Afar: un équivalent émergé des failles transformantes océaniques, C.R. Acad. Sci., Paris, v. 278 (D), p. 209–212.Google Scholar
  231. Tapscott, C., Patriat, P., Fisher, R. L., Sclater, J. G., Hoskins, H., Parsons, B., 1980, The Indian Ocean Triple Junction, J. Geophys. Res., v. 85, p. 4723–4739.Google Scholar
  232. Tarantola, A., Ruegg, J. C., and Lepine, J. C., 1979, Geodetic evidence for rifting in Afar: a brittle elastic model of the behaviour of the lithosphere, Earth Planet. Sci. Lett., v. 45, p. 435–444.Google Scholar
  233. Tarling, D. H., 1971, Gondwanaland, paleomagnetism and continental drift, Nature, v. 229, p. 17–21.Google Scholar
  234. Tarling, D. H., 1972, Another Gondwanaland, Nature, v. 238, p. 92–93.Google Scholar
  235. Taylor, P. T., 1968, Interpretation of the north Arabian Sea aeromagnetic survey, Earth Planet. Sci. Lett., v. 4, p. 232–236.Google Scholar
  236. Thompson, G., Bryan, W., Frey, F., and Sung, C. M., 1974, Petrology and geochemistry of basalts and related rocks from sites 214, 215, 216, D.S.D.P. Leg 22, Indian Ocean, in:Initial Reports of the Deep Sea Drilling Project, v. 22, p. 459–468.Google Scholar
  237. Tisseau, J., 1978, Etude structurale du Golfe d’Aden et du bassin de Somalie (Océan Indien occidental nord). Thèse de doctorat de.3ème cycle, spécialité Géophysique Interne, Université Paris Sud, p. 1–111.Google Scholar
  238. Tucholke, B. E., and Carpenter, G. B., 1977, Sediment distribution andçenozoic sedimentation patterns on the Agulhas Plateau, Geol. Soc. Amer. Bull., v. 88, p. 1337–1346.Google Scholar
  239. Udintsev, G. B., 1%5, New data on the bottom topography of the Indian Ocean, Okeanologiya,v. 5, p. 993–998.Google Scholar
  240. Udintsev, G. B., 1966, Results of the Upper Mantle Project studies in the Indian Ocean by the research vessel Vityaz, in: The World Rift System, Geol. Survey Canada Paper, v. 66–14, p. 148–172.Google Scholar
  241. Udintsev, G. B., Fisher, R. L., Kanaev, V. F., Laughton, A. S., Simpson, E. S. W., and Zhiv, D. I., 1975, Geological-Geophysical Atlas of the Indian Ocean, Academy of Sciences of the U.S.S.R., Moscow, p. 1–151.Google Scholar
  242. Upton, B. G. J., and Wadsworth, W. J., 1965, Geology of Reunion Island, Indian Ocean, Nature, v. 207, p. 151–154.Google Scholar
  243. Upton, B. G. J., and Wadsworth, W. J., 1966, The basalts of Reunion Island, Indian Ocean, Bull. Volcanol., v. 29, p. 7–24.Google Scholar
  244. Upton, B. G. J., Wadsworth, W. J., and Newman, T. C., 1967, The petrology of Rodriguez Island, Indian Ocean, Geol. Soc. Amer. Bull., v. 78, p. 1495–1506.Google Scholar
  245. Veevers, J. J., 1974, Seismic profiles made underway on Leg 22, in: Initial Reports of the Deep Sea Drilling Project, v. 22, p. 351–367.Google Scholar
  246. Veevers, J. J., Jones, J. G., and Talent, J. A., 1971, Indo-Australian stratigraphy and the configuration and dispersal of Gondwanaland, Nature, v. 229, p. 383–388.Google Scholar
  247. Veevers, J. J., and Heirtzler, J. R., 1974, Bathymetry, seismic profiles, and magnetic anomaly profiles, in: Initial Reports of the Deep Sea Drilling Project, v. 27, p. 339–381.Google Scholar
  248. Veevers, J. J., Falvey, D. A., Hawkins, L. V., and Ludwig, W. J., 1974, Seismic reflection measurements of the northwest Australian margin and adjacent deeps, Bull. Amer. Assoc. Petrol. Geol., v. 58, p. 1731–1750.Google Scholar
  249. Veevers, J. J., Heirtzler, J. R., Bolli, H. M., Carter, A. N., Cook, P. J., Krasheninnikov, V.,McKnight, B. K., Proto-Decima, F., Renz, G. W., Robinson, P. T., Rocker, K., Thayer,P. A., 1974, Initial Reports of the Deep Sea Drilling Project, v. 27, p. 1–1060.Google Scholar
  250. Veevers, J. J., and Cotterill, D., 1978, Western margin of Australia: Evolution of a rifted arch system, Geol. Soc. Amer. Bull., v. 89, p. 337–355.Google Scholar
  251. Vincent, E., Gibson, J. M., and Bran, L., 1974, Paleocene and early Eocene microfacies, benthonic foraminifera, and paleobathymetry of Deep Sea Drilling Project sites 236 and 237, Western Indian Ocean, in: Initial Reports of the Deep Sea Drilling Project, v. 24, p. 859–885.Google Scholar
  252. Vine, F. J., 1966, Spreading of the ocean floor: new evidence, Science, v. 154, p. 1405–1415.Google Scholar
  253. Von Der Borch, C. C., Sclater, J. G., Gartner, S., Hekinian, R., Johnson, D. A., McGowran,B., Pimm, A. C., Thompson, R. W., and Veevers, J. J., 1972, Deep Sea Drilling Project, Leg 22, Geotimes, v. 17, p. 15–17.Google Scholar
  254. Von Der Borch, C. C., Sclater, J. G., Gartner, S., Hekinian, R., Johnson, D. A., McGowran, B., Pimm, A. C., Thompson, R. W., Veevers, J. J., and Waterman, L. S., 1974, Initial Reports of the Deep Sea Drilling Project, v. 22, p. 1–890.Google Scholar
  255. Von Herzen, R. P., 1963, Geothermal heat flow in the gulfs of California and Aden, Science, v. 140, p. 1207–1208.Google Scholar
  256. Von Herzen, R. P., and Vaquier, V., 1966, Heat flow and magnetic profiles on the Mid-Indian Ocean Ridge, Phil. Trans. Roy. Soc., London, v. A. 259, p. 262–270.Google Scholar
  257. Watkins, N. D., Gunn, B. M., Nougier, J., and Baksi, A. K., 1974, Kerguelen: Continental fragment or oceanic island?, Geol. Soc. Amer. Bull., v. 85, p. 201–212.Google Scholar
  258. Wegener, A., 1929, The origin of Continents and Oceans, Methuen and Co., London, 4th German ed., p. 1–248.Google Scholar
  259. Weissel, J., and Hayes, D., 1972, Magnetic anomalies in the Southeast Indian Ocean, in: Antarctic Oceanology II: The Australian-New Zealand sector, Antarctic Res. Ser., v. 19, Hayes, D. E., ed., AGU, Washington D.C., p. 165–196.Google Scholar
  260. Whitmarsh, R. B., 1974a, Some aspects of plate tectonics in the Arabian Sea, in: Initial Reports of the Deep Sea Drilling Project, v. 23, p. 527–535.Google Scholar
  261. Whitmarsh, R. B., 1974b, Geophysical appendix, in: Initial Reports of the Deep Sea Drilling Project, v. 23, p. 1159–1171.Google Scholar
  262. Whitmarsh, R. B., Weser, O. E., Ross, D. A., Ali, S., Boudreaux, J. E., Coleman, R., Fleisher, R. L., Girdler, R. W., Jipa, D., Kidd, R. B., Mallik, T. K., Manheim, F. T., Matter, A., Nigrini, C., Siddiquie, H. N., Stoffers, P., and Supko, P. R., 1974, Initial Reports of the Deep Sea Drilling Project, v. 23, p. 1–1180.Google Scholar
  263. Whitmarsh, R. B., Weser, O. E., Ali, S., Boudreaux, J. E., Fleisher, R. L., Jipa, D., Kidd, R. B., Mallik, T. K., Matter, A., Nigrini, C., Siddiquie, H. N., and Stoffers, P., 1974a, Site 219, in: Initial Reports of the Deep Sea Drilling Project, v. 23, p. 35–56.Google Scholar
  264. Whitmarsh, R. B., Weser, O. E., Ali, S., Boudreaux, J. E., Fleisher, R. L., Jipa, D., Kidd, R. B., Mallik, T. K., Matter, A., Nigrini, C., Siddiquie, H. N., Stoffers, P., 1974b, Site 221, in: Initial Reports of the Deep Sea Drilling Project, v. 23, p. 167–210.Google Scholar
  265. Zhivago, A. V., 1967, Bottom morphology and tectonics of the southern ocean. Proc. Symp. Pacific—Antarctic Sci., Japan. Antarct. Res. Exp. Sci. Rap., Special Issue, v. 1, p. 124–135.Google Scholar

Copyright information

© Plenum Press, New York 1982

Authors and Affiliations

  • R. Schlich
    • 1
  1. 1.Institut de Physique du GlobeLaboratoire de Géophysique MarineStrasbourgFrance

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