A Variscan slow-spreading ridge (MOR-LHOT) in Limousin (French Massif Central): Magmatic evolution and tectonic setting inferred from mineral chemistry

Mineralogical Magazine

Volumn 70, Issue 2, 2006, Pages 175-185

  Berger, Julien ^a,b   Femenias O ^b   Mercier, J C C ^c   Demaiffe, D ^b  

^a ROYAL MUSEUM FOR CENTRAL AFRICA   (Belgium)

^b UNIVERSITÉ LIBRE DE BRUXELLES   (Belgium)

^c UNIVERSITÉ DE LA ROCHELLE   (France)

Author keywords

France; LHOT; Limousin; MOR; Slow spreading ridge; Variscan

Indexed keywords

COMPOSITION; GEOCHEMISTRY; IGNEOUS ROCKS; TECTONICS;

FRANCE; LIMOUSIN OPHIOLITE; MINERAL CHEMISTRY; VASISCAN SLOW-SPREADING RIDGE;

MINERALOGY;

HERCYNIAN OROGENY; METAMORPHISM; OPHIOLITE; PLUTONIC ROCK; SEAFLOOR; SUTURE ZONE; TECTONIC SETTING;

EURASIA; EUROPE; FRANCE; WESTERN EUROPE;

EID: 33745096266     PISSN: 0026461X     EISSN: None     Source Type: Journal    
DOI: 10.1180/0026461067020322     Document Type: Article

References (50)

1. Beard, J.S. (1986) Characteristic mineralogy of arc-related cumulate gabbros: Implications for the tectonic setting of gabbroic plutons and for andesite genesis. Geology, 14, 848-851.
2. Beard, B.L., Medaris, L.G., Johnson, C.M., Brueckner, H.K., Misar, Z. (1992) Petrogenesis of Variscan high-temperature Group A eclogites from the Moldanubian Zone of the Bohemian Massif, Czechoslovakia. Contributions to Mineralogy and Petrology, 111, 468-483.
3. Berger, J., Féménias, O., Mercier, J.-C.C. and Demaiffe, D. (2005) Ocean-floor hydrothermal metamorphism in the Limousin ophiolite (Western French Massif Central): Evidence of a rare preserved Variscan oceanic marker. Journal of Metamorphic Geology, 23, 795-812.
4. Bosse, V., Feraud, G., Ruffet, G., Ballèvre, M., Peucat, J.J. and De Jong, K. (2000) Late Devonian subduction and early-orogenic exhumation of eclogite-facies rocks from the Champtoceaux Complex (Variscan belt, France). Geological Journal, 35, 1-29.
5. Brueckner, H.K., Medaris, L.G. and Bakun-Czubarov, N. (1991) Nd and Sr age and isotope pattern from Variscan eclogites of the eastern Bohemian massif. Neues Jahrbuch für Mineralogie Abhandlungen, 163, 169-196.
6. Burkhard, D.J.M. (1993) Accessory chromium spinels: their coexistence and alteration in serpentinites. Geochimica et Cosmochimica Acta, 57, 1297-1306.
7. Cannat, M., Mevel, C., Maia, M., Deplus, C., Durand, C., Gente, P., Agrinier, P., Belarouchi, A., Dubuisson, G., Humler, E. and Reynolds, J. (1995) Thin crust, ultramafic exposures, and rugged faulting patterns at the Mid-Atlantic Ridge (22 degrees-24 degrees N). Geology, 23, 49-52
8. Cannat, M., Chatin, F., Whitechurch, H. and Ceuleneer, G. (1997) Gabbroic rocks trapped in the upper mantle at Mid Atlantic ridge. Proceedings of the Ocean Drilling Program, Scientific Results, 153, 243-264.
9. Church, W.E. and Riccio, L. (1977) Fractionation trends in the Bay of islands ophiolite of Newfoundland: polycyclic cumulate sequences in ophiolites and their classifications. Canadian Journal of Earth Science, 14, 1156-1165.
10. Dick, H.J.B. and Bullen, T. (1984) Chromian spinel as a petrogenetic indicator in abyssal and alpine-type peridotites and spatially associated lavas. Contributions to Mineralogy and Petrology, 86, 54-76.
11. Dubuisson, G. (1988) Etude d'un segment d'orogène ancien et de ses marqueurs ophiolitiques: approche tectonique, géophysique et pétrologique. Unpublished PhD thesis, Université Paris VII, 323 pp.
12. Dubuisson, G., Hirn, A., Girardeau, J., Mercier, J.-C.C. and Veinante, J.L. (1988) Multiple Variscan nappes in Limousin, western Massif Central, France: geophysical constraints to the geological model and geodynamic implications. Tectonophysics, 147, 19-31.
13. Dubuisson, G., Mercier, J.-C.C., Girardeau, J. and Frison, J.Y. (1989) Evidence for a lost ocean in Variscan terranes of the western Massif Central, France. Nature, 337, 729-732.
14. Egal, E., Santallier, D., Maillet, N. and Piboule, M. (1985) Evolution métamorphique des lherzolites mantéliques et des cumulats basiques et ultrabasiques en Limousin. Documents du BRGM, 95-3, 7-34.
15. Elthon, D., Stewart, M. and Ross, D.K. (1992) Compositional trends of minerals in oceanic cumulates. Journal of Geophysical Research, 97, 15189-15200.
16. Faryad, S.W., Melcher, F., Hoinkes, G., Puhl, J., Meisel, T. and Frank, W. (2002) Relicts of eclogite-facies metamorphism in the Austroalpine basement Hochgrössen (Speik complex), Austria. Mineralogy and Petrology, 74, 49-73.
17. Gómez-Pugnaire, M.T., Azor, A., Fernández-Soler, J.M. and López Sánchez-Vizcaíno, V. (2003) The amphibolites from the Ossa-Morena/ Central Iberian Variscan suture (Southwestern Iberian Massif): geochemistry and tectonic interpretation. Lithos, 68, 23-42.
18. Hébert, R. and Laurent, R. (1990) Mineral chemistry of the plutonic section of the Troodos ophiolite: new constraints for genesis of arc-related ophiolites. Pp. 149-163 in: Ophiolites: Ocean Crustal Analogues (J. Malpas, E. Moores, A. Panayotiou, and C. Xenophontos, editors). Proceedings of the Troodos Ophiolite Symposium 1987, Ministry of Agriculture and Natural Resources, Nicosia.
19. Hébert, R., Serri, G. and Hékinian, R. (1989) Mineral chemistry of ultramafic tectonites and ultramafic to gabbroic cumulates from the major oceanic basins and Northern Apennines ophiolites (Italy) - A comparison. Chemical Geology, 77, 183-208.
20. Kalt, A., Hanel, M., Schleicher, H. and Kramm, U. (1994) Petrology and geochronology of eclogites from the Variscan Schwarzwald (F.R.G.). Contributions to Mineralogy and Petrology, 115, 287-302.
21. Lafon, J.M. (1986) Géochronologie U-Pb appliquée a deux segments du Massif Central français: le Rouerge oriental et le Limousin central. Unpublished PhD thesis, Université de Montpellier, France 152 pp.
22. Ledru, P., Lardeaux, J.M., Santallier, D., Autran, A., Quenardel, J.M., Floc'h, J.-P., Lerouge, G., Maillet, N., Marchand, J. and Ploquin, A. (1989) Où sont les nappes dans le Massif Central français? Bulletin de la Société Géologique de France, 8, 605-618.
23. Leloix, C., Faure, M. and Feybesse, J-L. (1999) Hercynian polyphase tectonics in north-east French Massif Central: the closure of the Brévenne Devonian-Dinantian rift. International Journal of Earth Sciences, 88, 409-421.
24. Malpas, J. (1990) Crustal accretionary processes in the Troodos ophiolite, Cyprus: evidence from field mapping and deep crustal drilling. Pp. 65-74 in: Ophiolites: Ocean Crustal Analogues (J. Malpas, E. Moores, A. Panayotiou, and C. Xenophontos, editors). Proceedings of the Troodos Ophiolite Symposium 1987, Ministry of Agriculture and Natural Resources, Nicosia.
25. Matte, P. (2001) The Variscan collage and orogeny (480-290 Ma) and the tectonic definition of the Armorica microplate: a review. Terra Nova, 13, 122-128.
26. Medaris, G., Ducea, M., Ghent, E. and Iancu, V. (2003) Conditions and timing of high-pressure Variscan metamorphism in the South Carpathians, Romania. Lithos, 70, 141-161.
27. Ménot, R.P., Peucat, J.J., Scarenzi, D. and Piboule, M. (1988) 496 My age of plagiogranites in the Chamrousse ophiolite complex (external crystalline massifs in the French Alps): evidence of a Lower Paleozoic oceanization. Earth and Planetary Science Letters, 88, 82-92.
28. Miller, C. and Thoni, M. (1995) Origin of eclogites from the Autroalpine Otztal Basement (Tirol, Austria): geochemistry and Sm-Nd vs Rb-Sr isotope systematics. Chemical Geology, 122, 199-225.
29. Miyashiro, A. (1975) Classification, characteristics and origin of ophiolites. Journal of Geology, 83, 249-281.
30. Nicolas, A. and Boudier, F. (2003) Where ophiolites come from and what they tell us. Pp. 137-152 in: Ophiolite Concept and the Evolution of Geological Thought (Y. Dilek and S. Newcomb, S. editors). Special Paper, 373, Geological Society of America, Boulder, Colorado.
31. Niu, Y., Gilmore, T., Mackie, S., Greig, A. and Bach, W. (2002) Mineral chemistry, whole-rock compositions, and petrogenesis of Leg 176 gabbros: data and discussion. Proceedings of the Ocean Drilling Program, Scientific Results, 176, 1-56.
32. Ordóñez Casado, B., Gebauer, D., Schaffer, H.J., Ibarguchi, J.I.G. and Peucat, J.J. (2001) A single Devonian subduction event for the HP-HT metamorphism of the Cabo Ortegal complex within the Iberian Massif. Tectonophysics, 332, 359-385.
33. Paquette, J.L., Monchoux, P. and Couturier, M. (1995) Geochemical and isotopic study of a norite - eclogite transition in European Variscan belt: implications for U-Pb zircon systematics in metabasic rocks. Geochimica et Cosmochimica Acta, 56, 1611-1622.
34. Parlak, O., Höck, V. and Delaloye, M. (2002) The supra-subduction zone Pozanti-Karsanti ophiolite, southern Turkey: evidence for high pressure crystal fractionation of ultramafic cumulates. Lithos, 65, 205-221.
35. Pearce, J.A. (2003) Supra-subduction zone ophiolites: the search for modern analogues. Pp. 269-293 in: Ophiolite Concept and the Evolution of Geological Thought (Y. Dilek and S. Newcomb, S. editors). Special Paper, 373, Geological Society of America, Boulder, Colorado.
36. Pin, C. (1990) Variscan oceans: ages origins and geodynamic implications inferred from geochemical and radiometric data. Tectonophysics, 177, 215-227.
37. Pin, C. and Carme, F. (1987) A Sm-Nd isotopic study of 50OMa old oceanic crust in the Variscan belt of Western Europe: the Chamrousse ophiolite complex, Western Alps (France). Contributions to Mineralogy and Petrology, 96, 406-413.
38. Pin, C. and Paquette, J.L. (2002) Sr-Nd isotope and trace element evidence for a late Devonian active margin in northern Massif Central (France). Geodynamica Acta, 15, 63-77.
39. Pin, C. and Peucat, J.J. (1986) Ages des épisodes de métamorphisme paléozoïques dans le Massif Central et le Massif Armoricain. Bulletin de la Société Géologique de France, 3, 461-469.
40. Pin, C., Majerowicz, A. and Wojciechowska, I. (1988) Upper Paleozoic oceanic crust in the Polish Sudetes: Nd-Sr isotope and trace elements evidence. Lithos, 21, 195-209.
41. Rodríguez, J., Cosca, M.A., Gil Ibarguchi, J.I. and Dallmeyer, R.D. (2003) Strain partitioning and preservation of 40Ar/39Ar ages during Variscan exhumation of a subducted crust (Malpica-Tui complex, NW Spain). Lithos, 70, 111-139.
42. Santallier, D. (1995) A reply: another way of considering the ophiolite question. Pp. 354-358 in: Pre-Mesozoic Geology in France and Related Areas (J.D. Keppie, editor). Springer Verlag, Berlin.
43. Schaltegger, U., Gebauer, D. and von Quadt, A. (2002) The mafic-ultramafic rock association of Loderio-Biasca (lower Pennine nappes, Ticino, Switzerland): Cambrian oceanic magmatism and its bearing on early Paleozoic paleogeography. Chemical Geology, 186, 265-279.
44. Schmädicke, E., Mezger, K., Cosca, M.A. and Okrusch, M. (1995) Variscan Sm-Nd and Ar-Ar ages of eclogite facies rocks from the Erzgebirge, Bohemian Massif. Journal of Metamorphic Geology, 13, 537-552.
45. Serri, G. (1981) The petrochemistry of ophiolitic gabbroic complexes: a key for the classification of ophiolites into low-Ti and high-Ti types. Earth and Planetary Science Letters, 52, 203-212.
46. 2O in calc-alkaline differentiation and subduction zone magmatism. Contributions to Mineralogy and Petrology, 113, 143-166.
47. Stosch, H.G. and Langmuir, G.W. (1990) Geochemistry and evolution of MORB-type eclogites from the Münchberg Massif, southern Germany. Earth and Planetary Science Letters, 99, 230-249.
48. Svojtka, M., Kosler, J. and Venera, Z. (2002) Dating granulite-facies structures and the exhumation of lower crust in the Moldanubian Zone of the Bohemian Massif. International Journal of Earth Sciences, 91, 373-395.
49. von Quadt, A. and Gebauer, D. (1993) Sm-Nd and U-Pb dating of eclogites and granulites from the Oberpfalz, NE Bavaria, Germany. Chemical Geology, 109, 317-339.
50. von Raumer, J.F., Stampfli, G.M., Borel, G. and Bussy, F. (2002) Organization of pre-Variscan basement areas at the north-Gondwana margin. International Journal of Earth Sciences, 91, 35-52.