The Pan-African Kekem gabbro-norite (West-Cameroon), U-Pb zircon age, geochemistry and Sr-Nd isotopes: Geodynamical implication for the evolution of the Central African fold belt

Journal of African Earth Sciences

Volumn 84, Issue , 2013, Pages 70-88

  Kwékam, Maurice ^a   Affaton, Pascal ^b   Bruguier, Olivier ^c   Liégeois, Jean Paul ^d   Hartmann, Gerald ^e   Njonfang, Emmanuel ^f  

^a UNIVERSITY OF DSCHANG   (Cameroon)

^b AIX MARSEILLE UNIVERSITY   (France)

^c UNIVERSITÉ MONTPELLIER 2   (France)

^d ROYAL MUSEUM FOR CENTRAL AFRICA   (Belgium)

^e UNIVERSITY OF GÖTTINGEN   (Germany)

^f UNIVERSITY OF YAOUNDÉ I   (Cameroon)

Author keywords

Garnet spinel peridotite; Late post collision period; Shoshonitic gabbro norite; Subduction related fluid metasomatism; West Cameroon

Indexed keywords

ANOMALY; CRATON; EMPLACEMENT; FOLD BELT; GABBRO; GARNET; GEOCHEMISTRY; GEODYNAMICS; MAGMA; MAGMATISM; METASOMATISM; NEODYMIUM ISOTOPE; NORITE; OROGENY; PARTIAL MELTING; PERIDOTITE; RARE EARTH ELEMENT; SHEAR ZONE; SHOSHONITE; SPINEL; STRONTIUM ISOTOPE; URANIUM-LEAD DATING; ZIRCON;

CAMEROON;

EID: 84878357198     PISSN: 1464343X     EISSN: 18791956     Source Type: Journal    
DOI: 10.1016/j.jafrearsci.2013.03.010     Document Type: Article

References (70)

1. Abdelsalam M.G., Liégeois J.P., Stern R.J. The Saharan metacraton. Journal African Earth Sciences 2002, 34:119-136.
2. Aldanmaz E., Pearce J.A., Thirlwall M.F., Mitchell J.G. Petrogenetic evolution of the late Cenozoic, post-collision vocanism in western Anatolia, Turkey. Journal of Volcanology and Geothermal Research 2000, 102:67-95.
3. Ayers J. Trace element modelling of aqueous fluid-peridotite interaction in the mantle wedge of subduction zones. Contribution to Mineralogy and Petrology 1998, 132:390-404.
4. Ben Othman D., White W.M., Patchett J. The geochemistry of marine sediments, island arc magma genesis, and crust-mantle recycling. Earth Planetary Science Letter 1989, 94:1-21.
5. Bonin B. Do coeval mafic and felsic magmas in post-collisional to within-plate regimes necessarily imply two contrasting, mantle and crustal, sources?. A review Lithos 2004, 78:1-24.
6. Bosch D., Bruguier O., Pidgeon R.T. The evolution of an Archaean metamorphic belt: A conventional and SHRIMP U-Pb study of accessory minerals from the Jimperding metamorphic belt, Yilgarn craton, Western Australia. Journal of Geology 1996, 104:695-711.
7. Bosch D., Garrido C.J., Bruguier O., Dhuime B., Bodinier J.L., Padron-Navarta J.A., Galland B. Building an island-arc crustal section: time constraints from a LA-ICP-MS zircon study. Earth and Planetary Science Letters 2011, 309:268-279.
8. Brenan J.M., Shaw H.F., Ryerson F.J. Experimental evidence for the origin of lead enrichment in convergent-margin magmas. Nature 1995, 378:54-56.
9. Bruguier O., Hammor D., Bosch D., Caby R. Miocene incorporation of peridotite into the Hercynian basement of the Maghrebides (Edough massif, NE Algeria): implications for the geodynamic evolution of the Western Mediterranean. Chemical Geology 2009, 261:171-183.
10. Castaing C., Feybesse J.L., Thieblemont D., Triboulet C., Chevremont P. Palaeogeographical reconstructions of the Pan-African/Brasiliano Orogen; closure of an oceanic domain or intracontinental convergence between major blocks?. Precambrian Research 1994, 69:327-344.
11. Dawson J.B. Contrasting types of upper-mantle metasomatism?. Kimberlites II: The Mantle and Crust-mantle Relationships 1984, 289-294. Elsier, Amsterdam. J. Kornprobst (Ed.).
12. DePaolo D.J. Trace element and isotopic effects of combined wallrock assimilation and fractional crystallization. Earth Planetary Science Letters 1981, 53:189-202.
13. Djouka-Fonkwé M.L., Schulz B., Schüssler U., Tchouankoué J.P., Nzolang C. Geochemistry of the Bafoussam Pan-African I- and S-type granitoids in western Cameroon. Journal of African Earth Sciences 2008, 50:148-167.
14. Dumort, J-C., 1968. Carte géologique de reconnaissance à l'échelle du 1/50000ième, République Fédérale du Cameroun, Notice explicative sur la feuille Douala-Ouest. Direction des Mines et de la Géologie du Cameroun.
15. Elliott T., Plank T., Zindler A., White W., Bourdon B. Element transport from slab to volcanics and front at the Mariana arc. Journal Geophysic Research 1997, 102:14991-15019.
16. Ennih, N., Liégeois, J.P., 2008. The boundaries of the West African craton, with a special reference to the basement of the Moroccan metacratonic Anti-Atlas belt. In: Ennih, N., Liégeois, J.-P. (Eds.), The Boundaries of the West African Craton. Geological Society, London, Special Publications, vol. 297, pp. 1-17.
17. Fezaa N., Liégeois J.P., Abdallah N., Cherfouh E.H., De Waele B., Bruguier O., Ouabadi A. Late ediacaran geological evolution (575-555Ma) of the Djanet Terrane, Eastern Hoggar, Algeria, evidence for a Murzukian intracontinental episode. Precambrian Research 2010, 180:299-327.
18. Frey F.A., Garcia M.O., Wise W.S., Kennedy A., Gurriet P., Albarede F. The evolution of Mauna Kea volcano, Hawaii: petrogenesis of tholeiitic and alkalic basalts. Journal Geophysical Research 1991, 96:14347-14375.
19. Frost B.R., Barnes C.G., Collins W.J., Arculus R.J., Ellis D.J., Frost C.D. A geochemical classification for granitic rocks. Journal of Petrology 2001, 42:2033-2048.
20. Fuhrman M.L., Lindsley D.H. Ternary-feldspar modeling and thermometry. American Mineralogist 1998, 73:201-215.
21. Green N.L. Influence of slab thermal structure on basalt source regions and melting conditions: REE and HFSE constraints from the Garibaldi volcanic belt, northern Cascadia subduction system. Lithos 2006, 87:23-49.
22. 2O-rich fluid component in the generation of primitive basaltic andesites and andesites form the Mt Shasta region, N. California. Contribution Mineralogy Petrology 2002, 142:375-396.
23. Hochstaedter A.G., Ryan J.G., Luhr J.F., Hasenaka T. On B/Be ratios in the Mexican volcanic belt. Geochimica et Cosmochimica Acta 1996, 60:613-628.
24. Hofmann A.W., Jochum K.P., Seufert M., White W.M. Nb and Pb in oceanic basalts: new constraints on mantle evolution. Earth Planetary Science Letter 1986, 79:33-45.
25. Horstwood M.S.A., Foster G.L., Parrish R.R., Noble S.R., Nowell G.R. Common-Pb corrected in situ U-Pb accessory mineral geochronology by LA-MC-ICP MS. Journal of Analytical Atomic Spectroscopy 2003, 18:837-846.
26. Johnson A.D., Schwab B.E. Constraints on clinopyroxene/melt partitioning of REE, Sr, Ti, Cr, Zr, and Nb during mantle melting: first insights from direct lherzolite melting experiments at 1.0GPa. Geochimica et Cosmochimica Acta 2004, 68:4949-4962.
27. Kelemen, P.B., Hanghøj, K., Greene, A.R., 2004. One view of the geochemistry of subduction-related magmatic arcs, with an emphasis on primitive andesite and lower crust. In trease on geochemistry. The Crust, editor Rudnick, vol. 3, pp. 593-659.
28. Keppler H. Constraints from partitioning experiments on the compositions of subduction-zone fluids. Nature 1996, 380:237-240.
29. Kwékam M. Genèse et évolution des granitoïdes calco-alcalins au cours de la tectonique panafricaine: le cas des massifs syn à tardi-tectonique de l'Ouest-Cameroun (régions de Dschang et de Kekem) 2005, Thèse Doct. Etat Univ., Yaoundé I, 194 p.
30. Kwékam, M., Njonfang, E., Tchoua, F., 2007. The post-collisional norites of Kekem, West-Cameroon part of the Pan-African fold belt: possible relation between Pan-African subduction zone and their magma. 5ème Colloque international 3MA Fez- Morocco. Abstracts, 10-12 May, 2007, pp. 143-144.
31. Kwékam M., Liégeois J.P., Njonfang E., Affaton P., Hartmann G., Tchoua F. Nature, origin and significance of the Fomopéa Pan-African high-K calc-alkaline plutonic complex in the Central African fold belt (Cameroon). Journal African Sciences 2010, 54:79-95.
32. Liégeois J.-P., Stern R.J. Sr-Nd isotopes and geochemistry of granite-gneiss complexes from the Meatiq and Hafafit domes, Eastern Desert, Egypt: No evidence for pre-Neoproterozoic crust. Journal of African Earth Sciences 2010, 57:31-40.
33. Liégeois J.-P., Navez J., Hertogen J., Black R. Contrasting origin of post-collisional high-K calc-alkaline and shoshonitic versus alkaline and peralkaline granitoids. The use of sliding normalization. Lithos 1998, 45:1-28.
34. Liégeois J.-P., Latouche L., Boughara M., Navez J., Guiraud M. The LATEA metacraton (Central Hoggar, Tuareg shield, Algeria): behaviour of an old passive margin during the Pan-African orogeny. Journal African Earth Sciences 2003, 37:161-190.
35. Ludwig K.R. Decay constant errors in U-Pb Concordia intercept ages. Chemical Geology 2000, 166:315-318.
36. McDonough W.F., Sun S.S., Ringwood A.E., Jagoutz E., Hofmann A.W. Potassium, rubidium, and cesium in the Earth and Moon and the evolution of the mantle of the Earth. Geochimical Cosmochical Acta 1992, 56:1001-1012.
37. McKenzie D., O'Nions R.K. Partial melt distribution from inversion of rare earth element concentrations. Journal of Petrology 1991, 32:1021-1091.
38. Merlet C. An accurate computer correction program for quantitative electron probe microanalysis. Mikrochimica Acta 1994, 114(115):363-376.
39. Morimoto N., Fabries J., Ferguson A.K., Ginzburg I.V., Ross M., Seifert F.A., Zussman J., Aoki K., Gottardi G. Nomenclature of pyroxenes. American Mineralogist 1988, 73:1123-1133.
40. Morris, J.D., Ryan, J.G., 2004. Subduction zone processes and implications for changing composition of the upper and lower mantle. In: Carlson, R.W. (Ed.), The Mantle and Core, Treatise on Geochemistry 2, Holland, H.D. and Turekian, K.K., Executive Editors, pp. 451-470.
41. Ngako, V., 1999. Les déformations continentales panafricaines en Afrique centrale. Résultat d'un poinçonnement de type hilmalayen. Thèse Doct. Etat Univ. Yaoundé I, p. 301.
42. Ngako, V., Njonfang, E., 2011. Plates amalgamation and plate destruction, the Western Gondwana history. In Plate in Damien Closson Intech edts, pp. 1-36.
43. Ngako V., Affaton P., Nnanga J.M., Njanko Th. Pan-African tectonic evolution in central and southern Cameroon: transpression and transtension during sinistral shear movements. Journal of African Earth Sciences 2003, 36:207-214.
44. Ngako V., Affaton P., Njonfang E. Pan-African tectonics in northwestern Cameroon: implication for the history of western Gondwana. Gondwana Research 2008, 14:509-522.
45. Njanko T., Nédélec A., Affaton P. Synkematic high-k calc-alkaline plutons associated with the Pan-African Central Cameroon shear zone (W-Tibati area): petrology and geodynamic significance. Journal of African Earth Sciences 2006, 44(4-5):494-501.
46. Njanko T., Nédélec A., Kwékam M., Siqueira R., Esteban L. Emplacement and deformation of the Fomopéa pluton: implication for the Pana-African history of Western Cameroon. Journal of Structural Geology 2010, 32:306-320.
47. Njofang E., Ngako V., Kwekam M., Affaton P. Les orthogneiss calco-alcalins de Foumban-Bankim: témoins d'une zone interne de marge active panafricaine en cisaillement. Comptes Rendus Geoscience 2006, 338:606-616.
48. Pearce J.A. Role of the sub-continental lithosphere in magma genesic at active continental margins. Continental Basalts and Mantle Xenoliths 1983, 230-249. Shiva, Nantwich. C.J. Hawkesworth, M.J. Norry (Eds.).
49. Pearce J.A., Peate D.W. Tectonic implications of the composition of volcanic arc magmas. Annual Review Earth Planetary Sciences 1995, 23:252-285.
50. Peccerillo A., Taylor S.R. Geochemistry of Eocene calc-alkaline volcanic rocks from the Kastamonu area, Northern Turkey. Contribution to Mineralogy and Petrology 1976, 58:63-81.
51. Pedersen R.B., Dunning G.R. Evolution of arc crust and relations between contrasting sources: U-Pb (age) Nd and Sr isotope systematics of the ophiolitic terrain of SW Norway. Contributions to Mineralogy and Petrology 1997, 128:1-15.
52. Penaye J., Toteu S.F., Tchameni R., Van Schmus W.R., Tchakounté J., Ganwa A., Minyem D., Nsifa E.N. The 2.1Ga West Central African belt in Cameroon: extension and evolution. Journal of African Earth Sciences 2004, 39:159-164.
53. Plank T. Constraints from Thorium/Lanthanum on sediment recycling at subduction zones and the evolution of the continents. Journal of Petrology 2005, 46:921-944.
54. Putirka K. Thermometers and barometers for volcanic systems. Reviews in Mineralogy and Geochemistry 2008, 69:61-120.
55. Raguin, E., 1976. Géologie du granite, 3rd ed. Masson Paris, 274p.
56. Roberts M.P., Clemens J.D. Origin of high-potassic, calc-alkaline, I-type granitoids. Geology 1993, 21:825-828.
57. Rudnick R.L., McDonough W.F., O'Connell R.J. Thermal structure, thickness and composition of continental lithosphere. Chemical Geology 1998, 145:395-411.
58. Schärer U., Krogh T.E., Gower C.F. Age and evolution of the Grenville Province in eastern Labrador from U-Pb systematics in accessory minerals. Contributions to Mineralogy and Petrology 1986, 94:438-451.
59. Shang C.K., Satir M., Siebel W., Nsifa E.N., Taubald H., Liégeois J.P., Tchoua F.M. TTG magmatism in the Congo craton; a view from major and trace element geochemistry, Rb-Sr and Sm-Nd systematics: case of the Sangmelima region, Ntem complex, southern Cameroon. Journal of African Earth Sciences 2004, 40:61-79.
60. Shang C.K., Satir M., Nsifa E.N., Liegeois J.P., Siebel W., Taubald H. Archaean high-K granitoids produced by remelting of earlier Tonalite-Trondhjemite-Granodiorite (TTG) in the Sangmelima region of the Ntem Complex of the Congo craton, southern Cameroon. International Journal Earth Sciences 2007, 96:817-841.
61. Shang C.K., Liégeois J.P., Satir M., Frisch W., Nsifa E.N. Late Archaean high-K granite geochronology of the northern metacratonic margin of the Archaean Congo craton, southern Cameroon: evidence for Pb-loss due to non-metamorphic causes. Gondwana Research 2010, 18:337-355.
62. Steiger N.J., Janger E. Subcommission on geochronology: convention in the use of decay constants in geo- and consmochronology. Earth and Planetary Science letter 1977, 36:359-362.
63. Sun S.-S., McDonough W.F. Chemical and isotopic systematics of oceanic basalts: implications for mantle composition and processes. Magmatism in the Ocean basins 1989, 313-345. Geological Society, Oxford. A.D. Saunders, M.J. Norry (Eds.).
64. Tagne-Kamga G. Petrogenesis of the Neoproteorozoic Ngondo plutonic complex West Cameroon (Central Africa): a case of late-collision ferro-potassic magmatism. Journal of African Earth Sciences 2003, 36:149-171.
65. Taylor S.R., McLennan S. The geochemical composition of the continental crust. Review of Geophysics 1995, 33:241-265.
66. Toteu S.F., Van Schmus W.R., Penaye J., Michard A. New U-Pb and Sm-Nd data from north-central Cameroon and its bearing on the pre-Pan African history of central Africa. Precambrian Research 2001, 108:45-73.
67. Toteu S.F., Penaye J., Poudjoum Djomani Y.H. Geodynamic evolution of the Pan-African belt in Central Africa with special reference to Cameroon. Canada Journal Earth Science 2004, 41:73-85.
68. Toteu S.F., Yongue Fouateu R., Penaye J., Tchakounte J., Seme Mouangue A.C., Van Schmus E., Deloule W.R., Stendal H. U-Pb dating of plutonic rocks involved in the nappe tectonic in southern Cameroon: consequence for the Pan-African orogenic evolution of the central African fold belt. Journal of African Earth Sciences 2006, 44:479-493.
69. Wedepohl K.H. The composition of the continental crust. Geochimica et Cosmochimica Acta 1995, 59:1217-1232.
70. Wiedenbeck M., Allé P., Corfu F., Griffin W.L., Meier M., Oberli F., VonQuadt A., Roddick J.C., Spiegel W. Three natural zircon standards for U-Th-Pb, Lu-Hf, trace element and REE analysis. Geostandards Newsletter 1995, 19:1-23.