Contributions to Mineralogy and Petrology

, Volume 105, Issue 6, pp 715–730 | Cite as

Geochemistry and origin of Archaean quartz-cordierite gneisses from the Godthåbsfjord region, West Greenland

  • Robert F. Dymek
  • Michael S. Smith
Article
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Abstract

We report new data on the major, minor and trace element compositions of metasedimentary quartzcordierite gneisses (QCG), an important member of the Archaean Malene supracrustal suite found throughout the Godthåbsfjord region of West Greenland. The analyzed QCG contain assemblages of quartz+cordierite+biotite±garnet±anthophyllite/gedrite±staurolite±sillimanite±plagioclase (with abundant accessory zircon, and minor rutile, monazite and allanite), and broadly resemble cordierite-orthoamphibole rocks found in a great number of other metamorphic terrains. Chemically, the QCG are characterized by: (1) high but variable SiO2 (59–87 wt%), relative enrichments in MgO, FeO, and Al2O3 (mg∼0.35–0.85), and depletions in Na2O, K2O and especially CaO; (2) low concentrations of Sc, Cr, Co, Ni, and Sr; (3) high concentrations of Y, Nb, Zr, Hf, Ta, Th, U, and REE (rare earth elements)-with prominent negative Eu-anomalies in each case; (5) high concentrations of Ga (18–55 ppm), with variable Ga/Al ratios that are significantly higher than average crustal material. Low Cr and Ni, together with enriched and fractionated REE (displaying negative Eu-anomalies), distinguish the Malene QCG from published accounts of most other Archaean sedimentary rocks. Furthermore, all of the above-mentioned trace element characteristics distinguish the QCG from “ordinary” Malene clastic metasediments (quartzites, psammites, and pelites), suggesting a separate origin for the QCG. These data point towards chemically evolved felsic igneous rocks being the source of the QCG. Consequently, we propose that the Malene QCG represent metamorphosed felsic volcaniclastic sediments that underwent hydrothermal alteration by heated seawater prior to metamorphism, which resulted in gain of Mg (and Fe?), loss of alkalis and lime, and possibly Eu and Sr. The overall trace-element characteristics of the QCG (elevated Ga, Zr, Nb, REE, etc.) are features shared by A-type granites and their volcanic equivalents. Such igneous rocks may represent the ultimate source material for the QCG protolith.

Keywords

Rutile Igneous Rock Cordierite Hydrothermal Alteration Volcaniclastic 
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References

  1. Allaart JH (1976) The pre-3760 m.y. old supracrustal rocks of the Isua region, central West Greenland, and the associated occurrence of quartz-banded Ironstones. In: Windley BF (ed) The Early History of the Earth. Wiley, New York, pp 177–189Google Scholar
  2. Anders E, Ebihara M (1982) Solar-system abundances of the elements. Geochim Cosmochim Acta 46:2363–2380Google Scholar
  3. Appel PWU (1985) Stratabound tourmaline in the Archaen Malene supracrustals, West Greenland. Can J Earth Sci 22:1485–1491Google Scholar
  4. Appel PWU (1988) On an Sn-W-bearing iron-formation in the Archaean Malene supracrustals, West Greenland. Precambrian Res 39:131–137Google Scholar
  5. Appel PWU, Garde AA (1987) Stratabound scheelite and stratiform tourmalinites in the Archaean Malene supracrustal rocks, southern West Greenland. Bull Gronlands Geol Unders 156:66 pGoogle Scholar
  6. Baadsgaard H (1976) Further U−Pb dates on zircons from the early Precambrian rocks of the Godthåbsfjord area, West Greenland. Earth Planet Sci Lett 33:261–267Google Scholar
  7. Bachinski DJ (1978) Sulfur isotopic composition of thermally metamorphosed cupriferous iron-sulfide ores associated with cordierite-anthophyllite rocks, Gull Pond, Newfoundland. Econ Geol 73:64–72Google Scholar
  8. Beech EM, Chadwick B (1980) The Malene supracrustal gneisses of NW Buksefjorden: Their origin and significance in the Archaean crustal evolution of southern West Greenland. Precambrian Res 11:329–335Google Scholar
  9. Beeson R (1978) The orthoamphibole-bearing rocks of the Sondeled-Tvedestrand area, Aust-Agder, south Norway. Nor Geol Tidsskr 56:125–139Google Scholar
  10. Beeson R (1988) Identification of cordierite-anthophyllite rocks types associated with sulphide deposits of copper, lead and zinc. Trans Inst Min Metall (Sect B: Appl Earth Sci) 97:108–115Google Scholar
  11. Bischoff JL, Dickson FW (1975) Seawater-basalt interaction at 2000° C and 500 bars: Implications for origin of sea-floor heavy metal deposits and regulation of seawater chemistry. Earth Planet Sci Lett 25:385–397Google Scholar
  12. Boak JL, Dymek RF (1982) Metamorphism of the ca. 3800 Ma supracrustal rocks of Isua, West Greenland: implications for early Archaean crustal evolution. Earth Planet Sci Lett 59:155–176Google Scholar
  13. Boak JL, Dymek RF (1990) Geochemistry of 3800 Ma clastic metasedimentary and metavolcanic rocks from Isua, West Greenland. Geochim Cosmochim Acta (in revision)Google Scholar
  14. Bridgwater D, McGregor VR, Myers JS (1974) A horizontal tectonic regime in the Archaean of Greenland and its implications for early crustal thickening. Precambrian Res 1:179–197Google Scholar
  15. Bridgwater D, Keto L, McGregor VR, Myers JS (1976) Archaean gneiss complex of Greenland. In: Escher A, Watt WS (eds) Geology of Greenland. Geological Survey of Greenland, Copenhagen, pp 18–75Google Scholar
  16. Bridgwater D, Collerson KD, Myers JS (1978) The development of the Archaean Gneiss Complex of the North Atlantic Region. In: Tarling DH (ed) Evolution of the Earth's Crust. Academic Press, London, pp 19–68Google Scholar
  17. Brown EH, Babcock RS, Clark MD, Livingston DE (1979) Geology of the older Precambrian rocks of the Grand Canyon. Part I. Petrology and structure of the Vishnu Complex. Precambrian Res 8:219–241Google Scholar
  18. Brown M, Friend CRL, McGregor VR, Perkins WT (1981) The late Archaean Qôqut granite complex of southern West Greenland. J Geophys Res 86:10617–10632Google Scholar
  19. Chadwick B (1981) Field relations, petrography and geochemistry of Archaean amphibolite dykes and Malene supracrustal amphibolites, northwest Buksefjorden, southern West Greenland. Precambrian Res 14:221–259Google Scholar
  20. Chadwick B, Nutman AP (1979) Archaean structural evolution in the northwest of the Buksefjorden region, southern West Greenland. Precambrian Res 9:199–226Google Scholar
  21. Chadwick B, Coe K (1984) Archaean crustal evolution in southern West Greenland: a review based on observations in the Buksefjorden region. Tectonophysics 105:121–130Google Scholar
  22. Chinner GA, Fox JS (1974) The origin of cordierite-anthophyllite rocks in the Land's End aureole. Geol Mag 111:397–408Google Scholar
  23. Coe K (1980) Nûk gneisses of the Buksefjorden Region, southern West Greenland, and their enclaves. Precambrian Res 11:357–371Google Scholar
  24. Collins WJ, Beams SD, White AJR, Chappell BW (1982) Nature and origin of A-type granites with particular reference to southern Australia. Contrib Mineral Petrol 80:189–200Google Scholar
  25. Compton P (1978) Rare-earth evidence for the origin of the Nûk gneisses, Buksefjorden region, southern West Greenland. Contrib Mineral Petrol 66:283–293Google Scholar
  26. Condie KC (1981) Archaean Greenstone Belts. Elsevier, AmsterdamGoogle Scholar
  27. Couture RA (1977) Composition and origin of palygorskite-rich and montmorillonite-rich zeolite-containing sediments from the Pacific Ocean. Chem Geol 19:113–130Google Scholar
  28. Couture RA (1989) An improved fusion technique for major-element analysis by XRF. Advances in X-ray Analysis, Proceedings 37th X-ray Conference, Denver 32:233–238Google Scholar
  29. Danchin RV (1967) Chromium and nickel in the Fig Tree shales from South Africa. Science 158:261–262Google Scholar
  30. Dymek RF (1983) Fe−Ti oxides in the Malene Supracrustals and the occurrence of Nb-rich rutile. In: Geology of the Godthåbsfjord-Isua Region. Rapp Gronlands Geol Unders 112:83–94Google Scholar
  31. Dymek RF (1984) Supracrustal rocks, polymetamorphism, and evolution of the SW Greenland Archean Gneiss Complex. In: Holland HD, Trendall AF (eds) Patterns of Change in Earth Evolution. Springer, Berlin New York Heidelberg, pp 313–343Google Scholar
  32. Dymek RF (1987) Petrogenesis of Archaean cordierite-orthoamphibole rocks (COR) from West Greenland: trace element constraints (abstract). Trans Am Geophys Union (EOS) 68:453Google Scholar
  33. Dymek RF, Klein C (1988) Chemistry, petrology, and origin of banded iron-formation lithologies from the 3800 Ma Isua supracrustal belt, West Greenland. Precambrian Res 39:247–302Google Scholar
  34. Dymek RF, Weed R, Gromet LP (1983) The Malene metasedimentary rocks on Rypeo, and their relationship to Amîtsoq gneisses. In: Geology of the Godthåbsfjord-Isua Region. Rapp Gronlands Geol Unders 112:53–70Google Scholar
  35. Eskola P (1914) On the petrology of the Orijarvi region in southwestern Finland. Bull Comm Geol Finl 40:1–279Google Scholar
  36. Fabries J, Arnaud G, Conquere F (1985) Parageneses a biotitecordierite-anthophyllite dans l'aureole metamorphique au Sud du pluton gabbro-dioritique de Saint Quay-Portriewx (Cotesdu-Nord). Bull Soc Geol Fr, series 8, 1:435–440Google Scholar
  37. Floyd PA (1965) Metasomatic hornfelses of the Land's End aureole at Tater-du, Cornwall. J Petrol 6:223–245Google Scholar
  38. Friend CRL, Nutman AP, McGregor VR (1987) Late-Archaean tectonics in the Faeringehavn-Tre Brodre area, south of Buksefjorden, southern West Greenland. J Geol Soc London 144:369–376Google Scholar
  39. Friend CRL, Nutman AP, McGregor VR (1988) Late-Archaean terrane accretion in the Godthåb region, southern West Greenland. Nature 335:535–538Google Scholar
  40. Froese E (1969) Metamorphic rocks from the Coronation Mine and surrounding area. Geol Surv Can Pap 68–5:55–77Google Scholar
  41. Gable DJ, Sims PK (1969) Geology and regional metamorphism of some high-grade cordierite gneisses, Front range, Colorado. Geol Soc Am Spec Pap 128Google Scholar
  42. Gancarz AJ, Wasserburg GJ (1977) Initial Pb of the Amitsoq gneiss, West Greenland, and implications for the age of the Earth. Geochim Cosmochim Acta 41:1283–1301Google Scholar
  43. Gay AL, Grandstaff DE (1980) Chemistry and mineralogy of Precambrian paleosols at Elliot Lake, Ontario, Canada. Precambrian Res 12:349–373Google Scholar
  44. Gee RD, Myers JS, Trendall AF (1986) Relation between Archaean high-grade gneisses and granite-greenstone terrain in Western Australia. Precambrian Res 33:87–102Google Scholar
  45. Gibbs AK, Montgomery CW, O'Day PA, Erslev EA (1986) The Archaean-Proterozoic transition: Evidence from the geochemistry of metasedimentary rocks of Guyana and Montana. Geochim Cosmochim Acta 50:2125–2142Google Scholar
  46. Gibbs Ak, Montgomery CW, O'Day PA, Erslev EA (1988) Reply to comments by McLennan et al. (1988) on “The Archaean-Proterozoic transition: Evidence from the geochemistry of metasedimentary rocks of Guyana and Montana”. Geochim Cosmochim Acta 52:793–795Google Scholar
  47. Coroshnikov VI, Yur'yev LD (1965) Cordierite-polyamphibole and anthophyllite-cordierite rocks of the north Krivoy Rog District. Dokl Akad Nauk SSSR 163:140–143Google Scholar
  48. Grant JA (1968) Partial melting of common rocks as a possible source of cordierite-anthophyllite bearing assemblages. Am J Sci 266:908–931Google Scholar
  49. Green TH (1976) Experimental generation of cordierite-or garnetbearing granitic liquids from a pelitic composition. Geology 4:85–88Google Scholar
  50. Gribble CD (1970) The role of partial fusion in the genesis of certain cordierite-bearing rocks. Scott J Geol 6:75–82Google Scholar
  51. Gromet LP, Dymek RF, Haskin LA, Korotev RL (1984) The “North American shale composite”. Its compilation, major and trace element characteristics. Geochim Cosmochim Acta 48:2469–2482Google Scholar
  52. Hamilton PJ, O'Nions RK, Bridgwater D, Nutman AP (1983) Sm−Nd studies of Archaean metasediments and metavolcanics from West Greenland and their implications for the Earth's early history. Earth Planet Sci Lett 62:263–272Google Scholar
  53. Haskin LA, Wildeman TR, Haskin MA (1968) An accurate procedure for the determination of the rare earths by neutron activation. J Radioanal Chem 1:337–348Google Scholar
  54. Hoffer E, Grant JA (1980) Experimental investigations of the formation of cordierite-orthopyroxene parageneses in pelitic rocks. Contrib Mineral Petrol 73:15–22Google Scholar
  55. Holland HD (1984) The Chemical Evolution of the Atmosphere and Oceans. Princeton University Press, Princeton NJGoogle Scholar
  56. Hudson NFC, Harte B (1985) K2O-poor, aluminous assemblages from the Buchan Dalradian, and the variety of orthoamphibole assemblages in aluminous bulk compositions in the amphibolite facies. Am J Sci 285:224–266Google Scholar
  57. Humphris SE, Thompson G (1978a) Hydrothermal alteration of oceanic basalts by seawater. Geochim Cosmochim Acta 42:107–125Google Scholar
  58. Humphris SE, Thompson G (1978b) Trace element mobility during hydrothermal alteration of oceanic basalts. Geochim Cosmochim Acta 42:127–136Google Scholar
  59. Jacobsen SB, Dymek RF (1988) Nd and Sr isotope systematics of clastic metasediments from Isua, West Greenland: identification of pre-3.8 Ga differentiated crustal components. J Geophys Res 93:338–354Google Scholar
  60. James RS, Grieve RAF, Pauk L (1978) The petrology of cordieriteanthophyllite gneisses and associated mafic and pelitic gneisses at Manitouwadge, Ontario. Am J Sci 278:41–63Google Scholar
  61. Kamineni DC (1979) Metasedimentary cordierite-gedrite rocks of Archaean age near Yellowknife, Canada. Precambrian Res 9:289–301Google Scholar
  62. Kinny PD, Compston W, McGregor VR (1988) The early Archaean crustal history of West Greenland as recorded by detrital zircons. In: Ashwall LD (ed) Workshop on the Growth of the Continental Crust. LPI Tech Rep 88-02, Lunar and Planetary Institute, Houston, pp 79–81Google Scholar
  63. Korotev RL (1987a) National Bureau of Standards coal flyash (SRM 1633a) as a multielement standard for instrumental neutron activation analysis. J Radioanal Nuclear Chem Articles 110:159–177Google Scholar
  64. Korotev RL (1987b) Chemical homogeneity of National Bureau of Standards coal flyash (SRM 1633a). J Radioanal Nuclear Chem Articles 110:179–189Google Scholar
  65. Kuroda Y (1956) On the Fe−Mg metasomatism in the Hitachi District, souther Abukuma Plateau, northeastern Japan, Part I. Tokyo Kyoiku Daigaku Section C No. 44 5: 57–80Google Scholar
  66. Kwak TAP (1987) W−Sn Skarn Deposits. Elsevier, AmsterdamGoogle Scholar
  67. lal RK, Moorhouse WW (1969) Cordierite-gedrite rocks and associated gneisses of Fishtail Lake, Harcourt Township, Ontario. Can J Earth Sci 6:145–165Google Scholar
  68. Lambert RStJ, Holland JS (1976) Amîtsoq gneiss geochemistry: preliminary observations. In: Windley BF (ed) The Early History of the Earth. John Wiley, New York, pp 191–202Google Scholar
  69. Latvalahti U (1979) Cu−Zn−Pb ores in the Aijala-Orijarvi area, southwest Finland. Econ Geol 74:1035–1059Google Scholar
  70. Lottermoser BG (1989a) Rare-earth element behaviour associated with stratabound scheelite mineralisation (Broken Hill, Australia). Chem Geol 78:119–134Google Scholar
  71. Lottermoser BG (1989b) Rare earth element study of exhalites within the Willyama Supergroup, Broken Hill Block, Australia. Mineral Deposita 24:92–99Google Scholar
  72. Ludden JN, Thompson G (1979) An evaluation of the behaviour of the rare-earth elements during the weathering of sea-floor basalt. Earth Planet Sci Lett 43:85–92Google Scholar
  73. MacGeehan PJ (1977) The geochemistry of altered volcanic rocks at Matagami, Quebec: A geothermal model for massive sulphide genesis. Can J Earth Sci 15:551–570Google Scholar
  74. McGregor VR (1969) Early Precambrian geology of the Goldthåb area. Rapp Gronlands Geol Unders 19:28–30Google Scholar
  75. McGregor VR (1973) The early Precambrian geology of the Godthåb District, West Greenland. Philos Trans R Soc London A273:343–358Google Scholar
  76. McGregor VR (1979) Archaean gray gneisses and the origin of the continental crust: Evidence from the Godthåbsfjord region, West Greenland. In: Barker F (ed) Trondhjemites, Dacites, and Related Rocks. Elsevier, Amsterdam, pp 169–205Google Scholar
  77. McGregor VR, Nutman AP, Friend CRL (1986) The Archaean geology of the Godthåbsfjord region, southern West Greenland. In: Ashwal LD (ed) Workshop on Early Crustal Genesis: The World's Oldest Rocks. LPI Tech Rep 86-040, Lunar and Planetary Institute, Houston, pp 113–169Google Scholar
  78. McLennan SM, Taylor SR (1984) Archaean sedimentary rocks and their relation to the composition of the Archaean continental crust. In: Kroner A, et al. (ed) Archaean Geochemistry, Springer-Verlag, Berlin, pp 47–72Google Scholar
  79. McLennan SM, Nance WB, Taylor SR (1980) Rare earth elementthorium correlations in sedimentary rocks, and the composition of the continental crust. Geochim Cosmochim Acta 44:1833–1839Google Scholar
  80. McLennan SM, Taylor SR, McGregor VR (1984) Geochemistry of Archaean metasedimentary rocks from West Greenland. Geochim Cosmochim Acta 48:1–13Google Scholar
  81. McLennan SM, Taylor SR (1988) Crustal evolution: Comments on the paper “The Archaean-Proterozoic transition: evidence from the geochemistry of metasedimentary rocks from Guyana and Montana” by Gibbs et al. (1986). Geochim Cosmochim Acta 52:785–788Google Scholar
  82. Middelburg JJ, van der Weijden CH, Woittiez JRW (1988) Chemical processes affecting the mobility of major, minor, and trace elements during the weathering of granitic rocks. Chem Geol 68:253–273Google Scholar
  83. Moorbath S, Pankhurst RJ (1976) Further rubidium-strontium age and isotope evidence for the nature of the late Archaean plutonic event in West Greenland. Nature 262:124–126Google Scholar
  84. Moorbath S, Taylor PN, Goodwin R (1981) Origin of granitic magma by crustal remobilisation: Rb−Sr and Pb/Pb geochronology and isotope geochemistry of the late Archaean Qôqut granite complex of southern West Greenland. Geochim Cosmochim Acta 45:1051–1060Google Scholar
  85. Mottl MJ (1983) Metabasalts, axial hot springs, and the structure of hydrothermal systems at mid-ocean ridges. Geol Soc Am Bull 94:161–180Google Scholar
  86. Nisbet EG (1987) The Young Earth: An Introduction to Archaean Geology. Allen and Unwin, BostonGoogle Scholar
  87. Nutman AP, Bridgwater D (1983) Deposition of Malene supracrustal rocks on an Amîtsoq basement in outer Ameralik, southern West Greenland. In: Geology of the Godthåbsfjord-Isua Region. Rapp Gronlands Geol Unders 112:43–52Google Scholar
  88. Nutman AP, Bridgwater D (1986) Early Archaean Amîtsoq tonalites and granites of the Isukasia area, southern West Greenland: development of the oldest known sial. Contrib Mineral Petrol 94:137–148Google Scholar
  89. Nutman AP, Rosing MT (1986) Isukasia area-regional geological setting. In: Ashwall LD (ed) Workshop on Early Crustal Genesis: The World's Oldest Rocks. LPI Tech Rep 86-040, Lumar and Planetary Institute, Houston, pp 171–184Google Scholar
  90. Nutman AP, Bridgwater D, Fryer BJ (1984a) The iron-rich suite of Amîtsoq gneisses from southern West Greenland: early Archaean plutonic rocks of mixed crustal and mantle origin. Contrib Mineral Petrol 87:24–34Google Scholar
  91. Nutman AP, Allaart JH, Bridgwater D, Dimroth E, Rosing M (1984b) Stratigraphic and geochemical evidence for the depositional environment of the early Archaean Isua supracrustal belt, West Greenland. Precambrian Res 25:365–396Google Scholar
  92. Nutman AP, Friend CRL, Baadsgaard H, McGregor VR (1989) Evolution and assembly of Archaean gneiss terranes in the Godthåbsfjord region, southern West Greenland: Structural, metamorphic, and isotopic evidence. Tectonics 8:573–589Google Scholar
  93. Piepgras DJ, Jacobsen SB, Dymek RF (1985) Nd and Sr isotopic study of the Archaean Malene Supracrustals, West Greenland (abstract). Trans Am Geophys Union (EOS) 66:419Google Scholar
  94. Prider RT (1940) Cordierite-anthophyllite rocks associated with spinel-hypersthenites from Toodyay, Western Australia. Geol Mag 77:364–382Google Scholar
  95. Ramsay CR, Davidson LR (1974) Cordierite-anthophyllite rocks formed by isochemical metamorphism at Mary Kathleen, Northwestern Queensland, Australia. Proc R Soc Queens 85:43–55Google Scholar
  96. Reed MH (1983) Seawater-basalt reactions and the origin of greenstones and related ore deposits. Econ Geol 78:466–485Google Scholar
  97. Reimer TO (1985) Volcanic rocks and weathering in the Early Proterozoic Witwatersrand Supergroup, South Africa. Geol Surv Finl Bull 331:33–49Google Scholar
  98. Reimer TO (1986) Alumina-rich rocks from the Early Precambrian of the Kaapvaal craton as indicators of paleosols and as products of decompositional reactions. Precambrian Res 32:155–179Google Scholar
  99. Reinhardt J (1987) Cordierite-anthophyllite rocks from northwest Queensland, Australia: metamorphosed magnesian pelites. J Metamorphic Geol 5:451–472Google Scholar
  100. Retallack GJ, Grandstaff DE,Kimberley MM (1984) The promise and problems of Precambrian paleosols. Episodes 7:8–12Google Scholar
  101. Rhodes JM, Blanchard DP, Dungan MA, Rodgers KV, Brannon JC (1978) Chemistry of Leg 45 basalts. In: Melson WG et al. (eds) Initial Reports of the Deep Sea Drilling Project 45. US Gov Print Office, Washington, pp 447–459Google Scholar
  102. Ribonson P, Jaffe HW (1969) Aluminous enclaves in gedrite-cordierite gneiss from southwestern New Hamsphire. Am J Sci 267:389–421Google Scholar
  103. Rousseau RM (1984a) Fundamental algorithm between concentration and intensity in XRF analysis. 1. Theory. X-Ray Spectrom 13:115–120Google Scholar
  104. Rousseau RM (1984b) Fundamental algorithm between concentration and intensity in XRF analysis. 2. Practical application. X-Ray Spectrom 13:121–125Google Scholar
  105. Rousseau RM (1986) Fundamental algorithm between concentration and intensity in XRF analysis. 3. Experimental verification. X-Ray Spectrom 15:207–215Google Scholar
  106. Rousseau RM (1987) A comprehensive alpha coefficient algorithm (a second version). X-Ray Spectrom 16:103–108Google Scholar
  107. Schau M, Henderson JB (1983) Archaean chemical weathering at three localities on the Canadian Shield. Pecambrian Res 20:189–224Google Scholar
  108. Schiotte L, Compston W, Bridgwater D (1988) Late Archaean ages for the deposition of clastic sediments belonging to the Malene supracrustals, southern West Greenland: evidence from an ion probe U−Pb zircon study. Earth Planet Sci Lett 87:45–58Google Scholar
  109. Schreyer W (1977) Whiteschists: Their compositions and pressuretemperature regimes based on experimental, field, and petrographic evidence. Tectonophysics 43:127–144Google Scholar
  110. Schumacher JC, Robinson P (1987) Mineral chemistry and metasomatic growth of aluminous enclaves in gedrite-cordierite gneiss from southwestern New Hamsphire, USA. J Petrol 28:1033–1073Google Scholar
  111. Seki Y (1957) Petrological study of hornfelses in the central part of the Median Zone of Kitakami Mountainland, Iwate Prefecture. Sci Rep Saitama Univ Ser B 2:307–361Google Scholar
  112. Seyfried WE, Mottl MJ (1982) Hydrothermal alteration of basalts by seawater under seawater-dominated conditions. Geochim Cosmochim Acta 46:985–1002Google Scholar
  113. Stanton RL (1984) The direct derivation of cordierite from a claychlorite precursor: evidence from the Geco Mine, Manitouwadge, Ontario. Econ Geol 79:1245–1264Google Scholar
  114. Stanton RL (1986) Stratiform ores and geological processes. Trans Inst Min Metall (Sect B: Appl Earth Sci) 95:165–178Google Scholar
  115. Taylor SR, McLennan SM (1985) The Continental Crust: Its Composition and Evolution. Blackwell Scientific Publications, OxfordGoogle Scholar
  116. Taylor SR, Rudnick RL, McLennan SM, Eriksson KA (1986) Rare earth element patterns in Archaean high-grade metasediments and their tectonic significance. Geochim Cosmochim Acta 50:2267–2280Google Scholar
  117. Tertian R, Claisse F (1982) Principles of Quantitative X-Ray Fluorescence Analysis. Heyden, LondonGoogle Scholar
  118. Tilley CE (1935) Metasomatism in association with the greenstonehornfelses of Kendijack and Botallack, Cornwall. Min Mag 24:181–202Google Scholar
  119. Tilley CE (1937) Anthophyllite-cordierite-granulites of the Lizard. Geol Mag 74:300–309Google Scholar
  120. Tilley CE, Flett JS (1929) Hornfelses from Kendijack, Cornwall. G B Geol Surv, Summary of Progress Pt. II:24–41Google Scholar
  121. Treloar PJ, Koistinen TJ, Bowes DR (1981) Metamorphic development of cordierite-amphibole rocks and mica schists in the vicinity of the Outokumpu ore deposit, Finland. Trans R Soc Edinburgh: Earth Sci 72:201–215Google Scholar
  122. Upadhyay HD, Smitheringale WG (1972) Geology of the Gullbridge copper deposit, Newfoundland: Volcanogenic sulfides in cordierite-anthophyllite rocks. Can J Earth Sci 9:1061–1073Google Scholar
  123. Vallance TG(1967) Mafic rock alteration and isochemical development of some cordierite-anthophyllite rocks. J Petrol 8:84–96Google Scholar
  124. Warren RG, Shaw RD (1985) Volcanogenic Cu−Pb−Zn bodies of the central Arunta block, central Australia. J Metamorphic Geol 3:481–499Google Scholar
  125. Wells PRA (1976) Late Archean metamorphism in the Buksefjorden Region, southwest Greenland. Contrib Mineral Petrol 56:229–242Google Scholar
  126. Whalen JB, Currie KL, Chappell BW (1987) A-type granites: geochemical characteristics, discrimination and petrogenesis. Contrib Mineral Petrol 95:407–419Google Scholar
  127. Winchester JA, Floyd PA (1977) Geochemical discrimination of different magma series and their differentiation products using immobile elements. Chem Geol 20:325–343Google Scholar
  128. Windley BF (1984) The Evolving Continents. 2nd edn. John Wiley, New York, Windley BF, Bridgwater D (1971) The evolution of Archaean low-and high-grade terrains. Spec Publ Geol Soc Aust 3:33–47Google Scholar
  129. Wronkiewicz DJ, Condie KC (1987) Geochemistry of Archaean shales from the Witwatersrand Supergroup, South Africa: Source-area weathering and provenance. Geochim Cosmochim Acta 51:2401–2416Google Scholar

Copyright information

© Springer-Verlag 1990

Authors and Affiliations

  • Robert F. Dymek
    • 1
  • Michael S. Smith
    • 1
  1. 1.Department of Earth & Planetary SciencesWashington UniversitySt. LouisUSA

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