International Journal of Earth Sciences

, Volume 96, Issue 6, pp 1059–1078 | Cite as

The architecture of an incipient oceanic basin: a tentative reconstruction of the Jurassic Liguria-Piemonte basin along the Northern Apennines–Alpine Corsica transect

  • Michele MarroniEmail author
  • Luca Pandolfi
Original Paper


In this paper, a scenario for the early evolution of the Jurassic oceanic Liguria-Piemonte basin is sketched. For this purpose, four selected examples of ophiolite sequences from the Northern Apennines and Corsica are described and analyzed. In the External Ligurian units (Northern Apennines), the ocean–continent transition of the Adria plate was characterized by a basement made up of subcontinental mantle and lower continental crust, covered by extensional allochthons of upper crust. Both, the basement rocks and the extensional allochthons are cut by basaltic dikes and covered by basalts and pelagic deposits. The conjugate ocean–continent transition of the Corsica margin, represented by the Balagne nappe (Corsica), was composed of mantle peridotites and gabbros covered by basaltic flows and minor breccias, that in addition include continent-derived clasts. By contrast, the innermost (i.e., closest to the ocean) preserved area observed in the Internal Ligurian (Northern Apennines) and Inzecca (Corsica) units consists of former morphological highs of mantle peridotites and gabbros, bordered by small basins where the basement is covered by a volcano-sedimentary complex, characterized by ophiolitic breccias and cherts interlayered with basaltic flows. The overall picture resulting from our reconstructions suggests an asymmetric architecture for the Liguria-Piemonte basin with a central area bounded by two different transition zones toward the continental margins. This architecture can be interpreted as the result of a rifting process whose development includes a final stage characterized by passive, asymmetric extension of the lithosphere along an east-dipping detachment fault system.


Ophiolites Ocean–continent transition Liguria-Piemonte basin Corsica Northern Apennines 



Our paper is dedicated to Prof. Piero Elter, who introduced us to the geology of the Apennines and Corsica. It has been presented in the Atelier “Domaine Apulien-Corse–Enregistrement tectono-sédimentaire du système ibéro-apulo-européen au Crétacé de la Baie de Biscaye aux Alpes” held in September 2004 during the “Réunion de les Sciences de la Terre” organized by G. Manatschal and C. Hibsch. The authors are greatly indebted to Giancarlo Molli for stimulating discussions. The paper greatly benefited from critical reviews by Daniel Bernoulli, Gianreto Manatschal and Othmar Müntener, that are gratefully acknowledged. Our research was supported by M.I.U.R (Project COFIN) by C.N.R (Istituto di Geoscienze e Georisorse).


  1. Abbate E, Bortolotti V, Principi G (1980) Apennines ophiolites: a peculiar oceanic crust. In: Rocci G (ed) Tethyan ophiolites, western area, vol 1. Ofioliti Spec Issue, pp 59–96Google Scholar
  2. Amaudric du Chaffaut S, Caron J-M, Delcey R, Lemoine M (1972) Données nouvelles sur la stratigraphie des Schistes Lustrés de Corse: la série de l’Inzecca. Comparaison avec les Alpes Occidentales et l’Apennin Ligure. C R Acad Sci Paris Sér D 275:2611–2614Google Scholar
  3. Amaudric du Chaffaut S, Bourbon M, De Graciansky PC, Lemoine M (1984) Du Brianconnais a la Corse: modifications longitudinales d'une marge continentale passive de la Tethys Ligure. Mem Soc Geol It 28:269–283Google Scholar
  4. Balestrieri ML, Bigazzi G, Marroni M, Tribuzio R (1997) Quartzo-feldspathic granulites from External Liguride units (Northern Apennines): Tectono-metamorphic evolution and thermochronological constraints from zircon fission track data. C R Acad Sci Paris Série IIa 324:87–94Google Scholar
  5. Barrett TJ, Spooner ETC (1977) Ophiolitic breccias associated with allochthonous oceanic crustal rocks in the East Ligurian Apennines, Italy: a comparison with observations from rifted oceanic ridges. Earth Planet Sci Lett 35:79–91CrossRefGoogle Scholar
  6. Beccaluva L, Ohnenstetter D, Onenstetter M, Venturelli G (1977) The trace element geochemistry of Corsican Ophiolites. Contrib Mineral Petrol 64:11–31CrossRefGoogle Scholar
  7. Beccaluva L, Macciotta G, Piccardo, Zeda O (1984) Petrology of lherzolitic rocks from Northern Apennine ophiolites. Lithos 17:299–316CrossRefGoogle Scholar
  8. Bernoulli D, Kälin O, Patacca E (1979) A sunken continental margin of Tethys: the Northern and central Apennines. In: Beaudoin B, Purser BH (eds) Sédimentation Jurassique W-européen. ASF Publ Spéc 1:197–210Google Scholar
  9. Bernoulli D, Manatschal G, Desmurs L, Müntener O (2003) Where did Gustav Steinmann see the trinity? Back to the roots of an Alpine ophiolite concept. In: Dylek J, Newcomb S (eds) Ophiolite concept and the evolution of geological thought, vol 373. Geol Soc Am Spec Paper, pp 93–110Google Scholar
  10. Boccaletti M, Elter P, Guazzone G (1971) Plate tectonic models for the development of the western Alps and northern Apennines. Nature 234:108–111CrossRefGoogle Scholar
  11. Boillot GS, Grimaud A, Mauffret D, Mougenout J, Kornprobst J, Mergoil-Daniel J, Torrent G (1980) Ocean–continent boundary off the Iberian margin: a serpentinite diapir west of the Galicia bank. Earth Planet Sci Lett 48:23–34CrossRefGoogle Scholar
  12. Boillot GS et al (23 authors) (1987) Tectonic denudation of the upper mantle along passive margins: a model based on drilling results (ODP Leg 103, western Galicia margin, western Spain). Tectonophysics 123:335–342Google Scholar
  13. Borsi L, Schaerer U, Gaggero L, Crispini L (1996) Age, origin and geodynamic significance of plagiogranites in lherzolites and gabbros of the Piedmont-Ligurian ocean basin. Earth Planet Sci Lett 140:227–241CrossRefGoogle Scholar
  14. Bortolotti V, Principi G (2003) The Bargonasco-Upper Val Graveglia ophiolitic succession, Northern Apennines, Italy. Ofioliti 28:137–140Google Scholar
  15. Bortolotti V, Principi G, Treves B (1990) Mesozoic evolution of the western Tethys and the Europe/Iberia/Adria plate junction. Mem Soc Geol It 45:393–407Google Scholar
  16. Bracciali L, Marroni M, Pandolfi L, Rocchi S (2006) Petrography and geochemistry of Western Tethys Mesozoic sedimentary covers (Corsica and Northern Apennines): from source areas to margins configuration. Geol Soc Am Spec Paper (in press)Google Scholar
  17. Cannat M, Lagabrielle Y, Bougault H, Casey J, De Coutoures N, Dmitriev L, Fouquet Y (1997) Ultramafic and gabbroic exposures at Mid-Atlantic Ridge: geological mapping in the 15°N region. Tectonophysics 279:193–213CrossRefGoogle Scholar
  18. Chiari M, Marcucci M, Principi G (2000) The age of the radiolarian cherts associated with the ophiolites in the Apennines (Italy). Ofioliti 25:141–146Google Scholar
  19. Cortesogno L, Gaggero L (1992) The basaltic dikes in the Bracco gabbroic massif: petrology of the earliest phases of basaltic activity in the Northern Apennines ophiolites. Ofioliti 17:183–198Google Scholar
  20. Cortesogno L, Galbiati B, Principi G (1987) Note alla “Carta geologica delle ofioliti del Bracco” e ricostruzione della paleogeografia Giurassico-Cretacica. Ofioliti 12:261–342Google Scholar
  21. Dallan L, Nardi R (1984) Ipotesi dell’evoluzione dei domini “liguri” della Corsica nel quadro della paleogeografia e della paleotettonica delle unità alpine. Boll Soc Geol It 103:515–527Google Scholar
  22. Dal Piaz GV (1993) Evolution of Austro-alpine and Upper Penninic basement in the North-Western Alps from Variscan convergence to post-Variscan extension. In: von Raumer JF, Neubauer F (eds) Pre-Mesozoic geology in the Alps. Springer, Berlin, pp 327–344Google Scholar
  23. Decandia FA, Elter P (1969) Riflessioni sul problema delle ofioliti nell’Appennino Settentrionale (Nota preliminare). Atti Soc Tosc Sc Nat Mem serie A 76:1–9Google Scholar
  24. Decandia FA, Elter P (1972) La zona ofiolitifera del Bracco nel settore compreso tra Levanto e la Val Graveglia (Appennino Ligure). Mem Soc Geol It 11:503–530Google Scholar
  25. Desmurs L, Manatschal G, Bernoulli D (2001) The Steinmann Trinity revisited: mantle exhumation and magmatism along an ocean–continent transition: the Platta nappe, eastern Switzerland. In: Wilson RCL, Whitmarsh RB, Taylor B, Froitzeim N (eds) Non-volcanic rifting of continental margins: a comparison of evidence from land and sea. Geol Soc London Spec Publ 187:235–266Google Scholar
  26. De Wever P, Danelian T (1995) Supra-ophiolitic radiolarites from Alpine Corsica (France) In: Baumgartner PO, et al (eds) Middle Jurassic to Lower Cretaceous Radiolaria of Tethys: occurrences, systematics, biochronology. Mém Géol Lausanne 23:731–735Google Scholar
  27. Doglioni C (1991) A proposal for the kinematic modelling of W-dipping subductions—possible application to the Tyrrhenian-Apennines system. Terra Nova 3:423–434CrossRefGoogle Scholar
  28. Durand-Delga M, Peybernès B, Rossi P (1997) Arguments en faveur de la position, au Jurassique, des ophiolites de la Balagne (Haute Corse, France) au voisinage de la marge continentale européenne. C R Acad Sci Paris 325:973–981Google Scholar
  29. Elter G, Elter P, Sturani P, Weidmann M (1966) Sur la prolungation du domaine ligure de l'Apennin dans le Monferrat e les Alpes et sur l'origine de la Nappe de la Simme s.l. des Prealpes romandes et chaiblaisiennes. Bull Lab Geol Min Geophis et musee geologique de l'Universite de Lausanne 76:279–377Google Scholar
  30. Elter P (1975) L’ensemble ligure. Bull Soc Géol Fr 17:984–997Google Scholar
  31. Ferrando S, Bernoulli D, Compagnoni R (2004) The Canavese zone (internal Western Alps): a distal margin of Adria. Schweiz Mineral Petrogr Mitt 84:237–256Google Scholar
  32. Ferrara G, Tonarini S (1985) Radiometric geochronology in Tuscany: results and problems. Rend Soc It Miner Petrol 40:111–124Google Scholar
  33. Froitzheim N, Eberli G (1990) Extensional detachment faulting in the evolution of a Tethys passive continental margin, Eastern Alps, Switzerland. Geol Soc Am Bull 102:1297–1308CrossRefGoogle Scholar
  34. Froitzheim N, Manatschal G (1996) Kinematics of Jurassic rifting, mantle exhumation, and passive-margin formation in the Austroalpine and Penninic nappes (eastern Switzerland). Geol Soc Am Bull 108:1120–1133CrossRefGoogle Scholar
  35. Funck T, Hopper JR, Larsen HC, Louden KE, Toulcholke BE, Holbrook WS (2003) Crustal structure of ocean–continent transition at Flemish cap: seismic refraction results. J Geophys Res 108 B11:2531. doi:10.1029/2003JB002434CrossRefGoogle Scholar
  36. Gianelli G, Principi G (1977) Northern Apennine ophiolite: an ancient transcurrent fault zone. Boll Soc Geol It 96:53–58Google Scholar
  37. Gruppo di Lavoro sulle Ofioliti Mediterranee (1977) I complessi ofiolitici e le unità cristalline della Corsica alpina. Ofioliti 2:265–324Google Scholar
  38. Hermann J, Müntener O (1996) Extensional-related structures in Malenco-Margna system: Implication for paleogeography and consequence for rifting and Alpine tectonics. Schweiz Mineral Petrogr Mitt 76:501–519Google Scholar
  39. Hermann J, Müntener O, Trommsdorf V, Hansmann W, Piccardo G (1997) Fossil crust-to-mantle, Val Malenco, Italian Alps. J Geophys Res 102:20123–20132CrossRefGoogle Scholar
  40. Hölker A, Holliger K, Manatschal G, Anselmetti F (2002a) Seismic structure of the Iberian and Tethyan distal continental margin based on geological and petrophysical data. Tectonophysics 350:127–156CrossRefGoogle Scholar
  41. Hölker A, Manatschal G, Holliger K, Bernoulli D (2002b) Seismic structure and response of ocean–continent transition zones: a comparison of an ancient Tethyan and a present-day Iberian site. Mar Geophys Res 23:319–334CrossRefGoogle Scholar
  42. Hoogerduijn Strating EH, Rampone E. Piccardo GB, Drury M, Vissers LM (1993) Subsolidus emplacement of mantle peridotite during incipient oceanic rifting and opening of the Mesozoic Tethys (Voltri Massif, NW Italy). J Petrol 34:901–927Google Scholar
  43. Karson JA, Lawrence RM (1997) Tectonic window into gabbroic rocks of the middle oceanic crust in the MARK area near site 921–924. Proc ODP Sci Res 153:181–241Google Scholar
  44. Lagabrielle Y, Cannat M (1990) Alpine Jurassic ophiolites resemble the modern central Atlantic basement. Geology 18:319–322CrossRefGoogle Scholar
  45. Lagabrielle Y, Lemoine M (1997) Alpine, Corsican and Apennines ophiolites: the slow-spreading ridge model. C R Acad SciParis 325:909–920Google Scholar
  46. Lavier LL, Manatschal G (2006) A mechanism to thin the continental lithosphere at magma-poor margin. Nature 440:324–328CrossRefGoogle Scholar
  47. Lemoine M, Boillot G, Tricart P (1987) Ultramafic and gabbroic ocean floor of the Ligurian Tethys (Alps, Corsica, Apennines): in search of a genetic model. Geology 15:622–625CrossRefGoogle Scholar
  48. Leoni L, Marroni M, Tamponi M, Sartori F, (1996) The grade of metamorphism in the metapelites of the Internal Liguride units (Northern Apennines, Italy). Europ J Mineral 8:35–50Google Scholar
  49. Libourel G (1988) Le complexe de Santa Lucia di Mercurio (Corse): un équivalent possible des complexes de la Zone d’Ivrée. C R Acad Sci Paris 307 Série II:1225–1230Google Scholar
  50. Lombardo B, Pognante U (1982) Tectonic implications in the evolution of the Western Alps ophiolite metagabbros. Ofioliti 7:371–394Google Scholar
  51. Lombardo B, Rubatto D, Castelli D (2002) Ion microprobe U-Pb dating of zircon from a Monviso metaplagiogranite: implications for the evolution of the Piedmont-Liguria Tethys in the ewstern Alps. Ofioliti 27:81–90Google Scholar
  52. Malavieille J, Chemenda A, Larroque C (1998) Evolutionary model for Alpine Corsica: mechanism for ophiolite emplacement and exhumation of high-pressure rocks. Terra Nova 10:317–322CrossRefGoogle Scholar
  53. Manatschal G (2004) New models for evolution of magma-poor rifted margins based on a review of data and concepts from West Iberia and the Alps. Int Earth Sci 93:432–466Google Scholar
  54. Manatschal G, Nievergelt P (1997) A continent–ocean transition recorded in the Err and Platta nappes (Eastern Switzerland). Eclogae Geol Helv 90:3–27Google Scholar
  55. Manatschal G., Bernoulli D (1998) Rifting and early evolution of ocean basins: the record of the Mesozoic Tethys and of the Galicia-Newfoundland margins. Mar Geophys Res 20:371–381CrossRefGoogle Scholar
  56. Manatschal G, Bernoulli D (1999) Architecture and tectonic evolution of nonvolcanic margins: present-day Galicia and ancient Adria. Tectonics 18:1099–1119CrossRefGoogle Scholar
  57. Marino M, Monechi S, Principi G (1995) New calcareous nannofossil data on the Cretaceous-Eocene age of Corsican turbidites. Riv It Paleont Strat 101:49–62Google Scholar
  58. Marroni M, Meccheri M (1993) L’Unità di Colli/Tavarone in alta Val di Vara (Appennino ligure): caratteristiche litostratigrafiche ed assetto strutturale. Boll Soc Geol It 3–4:781–798Google Scholar
  59. Marroni M, Pandolfi L (1996) The deformation history of an accreted ophiolite sequence: the Internal Liguride units (Northern Apennines, Italy) Geodin Acta 9:13–29Google Scholar
  60. Marroni M, Pandolfi L (2003) Deformation history of the ophiolite sequence from Balagne Nappe (Northern Corsica): insights in the tectonic evolution of the alpine Corsica. Geol J 38:67–83CrossRefGoogle Scholar
  61. Marroni M, Treves B (1998) Hidden terranes in the northern Apennines, Italy: a record of Late Cretaceous-Oligocene transpressional tectonics. J Geol 106:149–162CrossRefGoogle Scholar
  62. Marroni M, Tribuzio R (1996) Gabbro-derived granulites from External Liguride units (northern Apennine, Italy): implications for the rifting processes in the western Tethys. Geol Rundsch 85:239–249CrossRefGoogle Scholar
  63. Marroni M, Monechi S, Perilli N, Principi G, Treves B (1992) Late Cretaceous flysch deposits of the Northern Apennines, Italy: age of inception of orogenesis-controlled sedimentation. Cretaceous Res 13:487–504CrossRefGoogle Scholar
  64. Marroni M, Molli G, Montanini A, Tribuzio R (1998) The association of continental crust rocks with ophiolites (northern Apennine, Italy): implications for the continent-ocean transition. Tectonophysics 292:43–66CrossRefGoogle Scholar
  65. Marroni M, Pandolfi L, Perilli N (2000) Calcareous nannofossil dating of the St. Marino Formation from the Balagne ophiolite sequence (Alpine Corsica) a comparison with the Palombini Shale of the Northern Apennine. Ofioliti 25:147–155Google Scholar
  66. Marroni M, Molli G, Ottria G, Pandolfi L (2001) Tectono-sedimentary evolution of the External Liguride units (Northern Apennine, Italy): Insights in the precollisional history of a fossil ocean–continent transition zone. Geodin Acta 14:307–320CrossRefGoogle Scholar
  67. Marroni M, Molli G, Montanini A, Ottria G, Pandolfi L, Tribuzio R (2002) The External Liguride units (Northern Apennine, Italy): from rifting to convergence history of a fossil ocean–continent transition zone. Ofioliti 27:119–132Google Scholar
  68. Marroni M, Pandolfi L, MeneghiniI F (2004) From accretion to exhumation in a fossil accretionary wedge: a case history from Gottero Unit (Northern Apennines, Italy) Geodin Acta 17:41–53CrossRefGoogle Scholar
  69. Mattauer M, Proust F (1976) La Corse alpine: un modèle de genèse du métamorphisme haute pression par subduction de croûte continentale sous du matérial océanique. C R Acad Sci Paris 282:1249–1251Google Scholar
  70. Meli S, Montanini A, Thöni M, Frank W (1996) Age of mafic granulite blocks from the External Liguride units (northern Apennine, Italy). Mem Sci Geol (Padova) 48:65–72Google Scholar
  71. Mével C, Cannat M, Gente P, Marion E, Auzende JM, Karson JA (1991) Emplacement of deep crustal, mantle rocks on the west median valley wall of the MARK area (MAR 23 N). Tectonophysics 190:31–53CrossRefGoogle Scholar
  72. Molli G (1994) Microstructural features of high temperature shear zones in gabbros of the Northern Apennine ophiolites. J Struct Geol 11:1535–1541CrossRefGoogle Scholar
  73. Molli G (1996) Pre-orogenic tectonic framework of the northern Apennine ophiolites. Eclogae Geol Helv 89:163–180Google Scholar
  74. Molli G, Tribuzio R (2004) Shear zones and metamorphic signature of subducted continental crust as tracers of the evolution of the Corsica/Northern Apennine orogenic system. In: Alsop GI, Holdsworth RE, McCaffrey KJW, Handy M (eds) Flow processes in faults and shear zones, vol 224. Geol Soc London Spec Pub, pp 321–335Google Scholar
  75. Montanini A (1997) Mafic granulites in the Cretaceous sedimentary mélanges from the northern Apennine (Italy): petrology and tectonic implications. Schweiz Miner Petr Mitt 77:43–64Google Scholar
  76. Montanini A, Tribuzio R (2001) Gabbro-derived granulites from the Northern Apennine (Italy); evidence for lower-crustal emplacement of tholeiitic liquids in post-Variscan times. J Petrol 42:2259–2277CrossRefGoogle Scholar
  77. Montenat C, Guery F, Berthou PY (1988) Mesozoic evolution of the Lusitanian basin: comparison with the adjacent margin. Proc ODP Sci Results 103:757–776Google Scholar
  78. Nardi R, Puccinelli A, Verani M (1978) Carta Geologica della Balagne “sedimentaria” (Corsica) alla scala 1:25.000 e note illustrative. Boll Soc Geol It 97:3–22Google Scholar
  79. Ohnenstetter D, Ohnenstetter P, Vidal P, Cornichet J, Hermitte D, Macé J (1981) Crystallization and age of zircon from Corsican ophiolitic albitites: consequences for oceanic expansion in Jurassic times. Earth Planet Sci Lett 54:397–408CrossRefGoogle Scholar
  80. Ottonello G, Joron JL, Piccardo GB (1984) Rare earth and 3d transition J element geochemistry of peridotitic rocks: II. Ligurian peridotites and associated basalts. Petrol 25:373–393Google Scholar
  81. Padoa E (1999) Les ophiolites du Massif de l’Inzecca (Corse Alpine): lithostratigraphie, structure géologique et évolution géodynamique. Géol France 3:37–48Google Scholar
  82. Pérez-Gussinyé M, Ranero CR, Reston TJ, Sawjer D (2003) Mechanism of extension at nonvolcanic margins: evidence from the Galicia Interior basin, west of Iberia. J Geophys Res 108 B5:2245. doi:10.1029/2001JB000901CrossRefGoogle Scholar
  83. Perilli N, Nannini D (1997) Calcareous nannofossil biostratigraphy of the Calpionella Limestone and Palombini Shale (Bracco/Val Graveglia unit) in the Eastern Ligurian Apennines (Italy). Ofioliti 22:213–225Google Scholar
  84. Piccardo GB (1976) Petrologia del massiccio lherzolitico di Suvero (La Spezia). Ofioliti 1:279–318Google Scholar
  85. Piccardo GB, Rampone E, Romairone A (2002) Formation and composition of the lithosphere of the Ligurian Tethys: inferences from the Ligurian ophiolites. Ofioliti 27:145–161Google Scholar
  86. Piccardo G, Müntener O, Zanetti A (2004) Alpine-Apennine peridotite: new concepts on their composition and evolution. Ofioliti 29:63–74Google Scholar
  87. Principi G, Bortolotti V, Chiari M, Cortesogno L, Gaggero L, Marcucci M, Saccani E, Treves B (2004) The pre-orogenic volcano-sedimentary covers of the western Tethys oceanic basin: a review. Ofioliti 29:177–212Google Scholar
  88. Rampone E, Piccardo GB (2000) The ophiolite-oceanic lithosphere analogue: new insights from the Northern Apennines (Italy) In: Dick J, Moores E, Elthon D, Nicolas A (eds) Ophiolite and oceanic crust: new insights from field studies and Ocean drilling Program. Geol Soc Am Spec Pap 349:21–34Google Scholar
  89. Rampone E, Hoffmann AW, Piccardo GB, Vannucci R, Bottazzi P, Ottolini L (1995) Petrology, mineral and isotope geochemistry of the External Liguride peridotites (northern Apennine, Italy). J Petrol 36:81–105Google Scholar
  90. Rampone E, Hofmann AW, Piccardo GB, Vannucci R, Bottazzi P, Ottolini L (1996) Trace element and isotope geochemistry of depleted peridotites from an N-MORB type ophiolite (Internal Liguride, N. Italy). Contrib Mineral Petrol 123:61–76CrossRefGoogle Scholar
  91. Rampone E, Hofmann AW, Raczek I (1998) Isotopic contrasts within the Internal Liguride ophiolite (N. Italy) the lack of a genetic mantle-crust link. Earth Planet Sci Lett 163:175–189CrossRefGoogle Scholar
  92. Rossi P, Durand-Delga M (2001) Significance of sandstones interbedded in the Jurassic basalts of the Balagne ophiolitic nappe (Corsica, France). Ofioliti 26:169–174Google Scholar
  93. Rossi PH, Cocherie A, Lahondère D, Fanning CM (2002) La marge européenne de la Téthys jurassique en Corse: datation de trondhjemites de Balagne et indices de croute continentale sous le domaine Balano-Ligure. C R Geosci 334:313–322CrossRefGoogle Scholar
  94. Serri G (1980) Chemistry and petrology of gabbroic complexes from the northern Apennines ophiolites. In: Panayiotou A (ed) Proceeding of the International Ophiolites Symposium Cyprus 1979, Geol Surv Dept., Nicosia, pp 296–313Google Scholar
  95. Treves B (1984) Orogenic belts as accretionary prisms: the example of northern Apennines (Northern Italy). Ofioliti 9:577–618Google Scholar
  96. Treves BA, Harper GD (1994) Exposure of serpentinites on the ocean floor: sequence of faulting and hydrofracturing in the Northern Apennine ophicalcites. Ofioliti 19:435–466Google Scholar
  97. Tribuzio R, Tiepolo M, Vannucci R (2000) Evolution of gabbroic rocks from the Northern Apennine ophiolites (Italy): comparison with the lower oceanic crust from modern slow-spreading ridge. In: Dick J, Moores E, Elthon D, Nicolas A. (eds) Ophiolite and oceanic crust: new insights from field studies and Ocean Drilling Program, vol 349. Geol Soc Am Spec Paper, pp 129–138Google Scholar
  98. Tribuzio R, Thirlwall MF, Vannucci R (2004) Origin of the gabbro-peridotite association from the Northern Apennine Ophiolites (Italy). J Petrol 45:1109–1124CrossRefGoogle Scholar
  99. Trommsdorff V, Piccardo GB, Montrasio A (1993) From magmatism through metamorphism to sea floor emplacement of subcontinental Adria lithosphere during pre-Alpine rifting (Malenco, Italy). Schweiz Mineral Petrogr Mitt 73:191–203Google Scholar
  100. Tucholke BE, Lin J (1994) A geological model for the structure of ridge segments in slow spreading ocean crust. J Geoph Res 99 B6:11937–11958CrossRefGoogle Scholar
  101. Tucholke BE, Sibuet JC et al. (2004) Proceeding of the ocean drilling project, Initial Reports 210. Ocean Drilling Program, Texas A&M University, College Station TX, XIX+78 ppGoogle Scholar
  102. Vannucci R, Rampone E, Piccardo GB, Ottolini L, Bottazzi P (1993) Ophiolitic magmatism in the Ligurian Tethys: an ion microprobe study of basaltic clinopyroxenes. Contrib Mineral Petrol 115:123–137CrossRefGoogle Scholar
  103. Venturelli G, Thorpe RS, Potts PJ (1981) Rare earth and trace element characteristics of ophiolitic metabasalts from the Alpine–Apennine belt. Earth Plan Sci Lett 53:109–123CrossRefGoogle Scholar
  104. Warburton J (1986) The ophiolite-bearing Schistes Lustrés nappe in Alpine Corsica: a model for the implacement of ophiolites that have suffered HP/LT metamorphism. Geol Soc Am Mem 164:313–331Google Scholar
  105. Wernicke B (1981) Low-angle normalt fault in the Basin and Range provincia—Nappe tectonics in an extending orogen. Nature 291:645–648CrossRefGoogle Scholar
  106. Whitmarsh RB, Manatschal G, Minshull TA (2001) Evolution of magma-poor continental margins from rifting to seafloor spreading. Nature 413:150–154CrossRefGoogle Scholar

Copyright information

© Springer-Verlag 2007

Authors and Affiliations

  1. 1.Dipartimento di Scienze della TerraUniversità di Pisa and Istituto di Geoscienze e Georisorse, CNRPisaItaly

Personalised recommendations