A complex multi-chamber magmatic system beneath a late Cenozoic volcanic field: Evidence from CSDs and thermobarometry of clinopyroxene from a single nephelinite flow (Djbel Saghro, Morocco)

Geological Society Special Publication

Volumn 297, Issue , 2008, Pages 509-524

  Berger, Julien ^a,b,c   Ennih, Nasser ^d   Liégeois, Jean Paul ^a   Nkono, Collin ^b   Mercier, Jean Claude C ^c   Demaiffe, Daniel ^b  

^a ROYAL MUSEUM FOR CENTRAL AFRICA   (Belgium)

^b UNIVERSITÉ LIBRE DE BRUXELLES   (Belgium)

^c UNIVERSITÉ DE LA ROCHELLE   (France)

^d CHOUAIB DOUKKALI UNIVERSITY   (Morocco)

Author keywords

[No Author keywords available]

Indexed keywords

CENOZOIC; CRUST-MANTLE BOUNDARY; DIFFERENTIATION; ELECTRON PROBE ANALYSIS; MAGMA CHAMBER; NEPHELINITE; PYROXENE; SIZE DISTRIBUTION;

AFRICA; MOROCCO; NORTH AFRICA;

EID: 47349092688     PISSN: 03058719     EISSN: None     Source Type: Book Series    
DOI: 10.1144/SP297.25     Document Type: Article

References (38)

1. AOKI, K. & SHIBA, I. 1973. Pyroxenes from Iherzolite inclusion of Itinomegata, Japan. Lithos, 6, 41-51.
2. ARMIENTI, P., PARESCHI, M. T., INNOCENTI, F. & POMPILIO, M. 1994. Effects of magma storage and ascent on the kinetics of crystal-growth - the case of the 1991-93 Mt Etna eruption. Contributions to Mineralogy and Petrology, 115, 402-414.
3. BACHMANN, O. & DUNGAN, M. A. 2002. Temperature-induced Al-zoning in hornblendes of the Fish Canyon magma, Colorado. American Mineralogist, 87, 1062-1076.
4. BERRAHMA, M., DELALOYE, M., FAURE-MURET, A. & RACHDI, H. 1993. Premiires données géochronologiques sur le volcanisme alcalin du fbel Saghro, Anti-Atlas, Maroc. Journal of African Earth Sciences, 17, 333-341.
5. BONDI, M., MORTEN, L., NIMIS, P., ROSSI, P. L. & TRANNE, C. A. 2002. Megacrysts and mafic-ultramafic xenolith-bearing ignimbrites from Sirwa Volcano, Morocco: phase petrology and thermobarometry. Mineralogy and Petrology, 75, 203-221.
6. DAMASCENO, D., SCOATES, J. S., WEIS, D., FREY, F. A. & GIRET, A. 2002. Mineral chemistry of mildly alkalic basalts from the 25 Ma Mont Crozier section, Kerguelen Archipelago; constraints on phenocryst crystallization environments. Journal of Petrology, 43, 1389-1413.
7. DOBOSI, G. 1989. Clinopyroxene zoning patterns in the young alkali basalts of Hungary and their petrogenetic significance. Contributions to Mineralogy and Petrology, 101, 112-121.
8. DUDA, A. & SCHMINCKE, H.-U. 1985. Polybaric differentiation of alkali basaltic magmas: evidence from green-core clinopyroxenes (Eifel, FRG). Contributions to Mineralogy and Petrology, 91, 340-353.
9. ENNIH, N. & LIÉGEOIS, J. P. 2001. The Moroccan Anti-Atlas: the West African craton passive margin with limited Pan-African activity. Implications for the northern limit of the craton. Precambrian Research, 112, 291-304.
10. GROVE, T. L. & BAKER, M. B. 1984. Phase equilibrium controls on the tholeiitic versus calc-alkahne differentiation trends. Journal of Geophysical Research, 89, 3253-3274.
11. GWALANI, L. G., ROCK, N. M. S., RAMASAMY, R., GRIFFIN, B. J. & MULAI, B. P. 2000. Complexly zoned Ti-rich melanite-schorlomite garnets from Ambadungar carbonatite-alkalic complex, Deccan Igneous Province, Gujarat State, Western India. Journal of Asian Earth Sciences, 18, 163-176.
12. HAMMER, J. E., CASHMAN, K. V., HOBLITT, R. P. & NEWMAN, S. 1999. Degassing and microlite crystallization during pre-climactic events of the 1991 eruption of Mt. Pinatubo, Philippines. Bulletin of Volcanology, 60, 355-380.
13. HIGGINS, M. D. 1996. Magma dynamics beneath Kameni volcano, Thera, Greece, as revealed by crystal size and shape measurements. Journal of Volcanology and Geothermal Research, 70, 37-48.
14. HIGGINS, M. D. 1999. Origin of megacrysts in granitoids by textural coarsening: a crystal size distribution (CSD) study of microchne in the Cathedral Peak granodiorite, Sierra Nevada, California. In: FERNANDEZ, C. & CASTRO, A. (eds) Understanding Granites: Integrating Modern and Classical Techniques. Geological Society, London, Special Publications, 158, 207-219.
15. HIGGINS, M. D. 2000. Measurement of crystal size distributions. American Mineralogist, 85, 1105-1116.
16. HIGGINS, M. D. 2002. Closure in crystal size distributions (CSD), verification of CSD calculations, and the significance of CSD fans. American Mineralogist, 87, 171-175.
17. HOERNLE, K. & SCHMINCKE, H. U. 1993. The role of partial melting in the 15-Ma geochemical evolution of Gran Canaria - a blob model for the Canary hotspot. Journal of Petrology, 34, 599-626.
18. IBHI, A. 2000. Le volcanisme Plio-Quatemaire de Saghro (Anti-Atlas, Maroc) et les enclaves basiques et ultra-basiques associées. PhD thesis, University of Agadir.
19. IBHI, A., NACHIT, H., ABIA, E. H. & HERNANDEZ, J. 2002. Intervention of carbonate components in the petrogenesis of the pyroxene nephelinites from the Jbel Saghro (Anti-Atlas, Morocco). Bulletin de la Société Géologique de France, 173, 37-43.
20. LAUNEAU, P. 2004. Mise en évidence des écoulements magmatiques par analyse d'images 2-D des distributions 3-D d'orientations préférentielles de formes. Bulletin de la Société Giologique de France, 175, 331-350.
21. LAUNEAU, P. & ROBIN, P.-Y. F. 2005. Determination of fabric and strain ellipsoids from measured sectional ellipses - implementation and applications. Journal of Structural Geology, 27, 2223-2233.
22. LE MAITRE, R. W. 2002. Igneous Rocks. A Classification and Glossary of Terms, 2nd edn. Cambridge University Press, Cambridge.
23. LIÉGEOIS, J.-P., BENHALLOU, A., AZZOUNI-SEKKAL, A., YAHIAOUI, R. & BONIN, B. 2005. The Hoggar swell and volcanism: Reactivation of the Precambrian Tuareg shield during Alpine convergence and West African Cenozoic volcanism. In: FOULGER, G. R., NATLAND, J. H., PRESNALL, D. C. & ANDERSON, D. L. (eds) Plates, Plumes and Paradigms. Geological Society of America, Special Papers, 388, 379-400.
24. LINDSLEY, D. H. 1983. Pyroxene thermometry. American Mineralogist, 68, 477-493.
25. MARSH, B. D. 1988. Crystal Size Distribution (CSD) in rocks and the kinetics and dynamics of crystallization. 1. Theory. Contributions to Mineralogy and Petrology, 99, 277-291.
26. NIMIS, P. & ULMER, P. 1998. Clinopyroxene, geobarometry of magmatic rocks Part 1: An expanded structural geobarometer for anhydrous and hydrous, basic and ultrabasic systems. Contributions to Mineralogy and Petrology, 133, 122-135.
27. NKONO, C., FEMENIAS, O., DIOT, H., BERZA, T. & DEMAIFFE, D. 2006. Flowage differentiation in an andesitic dyke of the Motru Dyke Swarm (Southern Carpathians, Romama) inferred from AMS, CSD and geochemistry. Journal of Volcanology and Geothermal Research, 154, 201-221.
28. O'B RIEN, H. E., IRVING, A. J. & MCCALLUM, I. S. 1988. Complex zoning and resorption of phenocrysts in mixed potassic mafic magmas of the Highwood Mountains, Montana. American Mineralogist, 73, 1007-1024.
29. PETERSON, T. D. 1996. A refined technique for measuring crystal size distributions in thin section. Contributions to Mineralogy and Petrology, 124, 395-405.
30. POUCHOU, J. L. & PICHOIR, F. 1984. Un nouveau modèle de calcul pour la microanalyse quantitative par spectrométrie de rayons X - Partie I: application à l'analyse d'échantillons homogènes. Recherche Aéro-spatiale, 3, 167-192.
31. PUTIRKA, K. D., MIKAELIAN, H., RYERSON, F. & SHAW, H. 2003. New chnopyroxene-liquid thermobarometers for matic, evolved, and volatile-bearing lava compositions, with applications to lavas from Tibet and the Snake River Plain, Idaho. American Mineralogist, 88, 1542-1554.
32. RESMINI, R. G. 1993. Dynamics of Magma Within the Crust: A Study Using Crystal Size Distributions. PhD dissertation, Johns Hopkins University, Baltimore, MD.
33. SCHULZE, D. J. 1987. Megacrysts from alkalic volcanic rocks. In: NIXON, P. H. (ed.) Mantle Xenoliths. Wiley, New York, 433-451.
34. SCOATES, J. S., LO CASCIO, M., WEIS, D. & LINDSLEY, D. H. 2006. Experimental constraints on the origin and evolution of mildly alkalic basalts from the Kerguelen Archipelago, Southeast Indian Ocean. Contributions to Mineralogy and Petrology, 151, 582-599.
35. STRECK, M. J., DUNGAN, M. A., MALAVASSI, E., REAGAN, M. K. & BUSSY, F. 2002. The role of basalt replenishment in the generation of basaltic andesites of the ongoing activity at Arenal volcano, Costa Rica: evidence from clinopyroxene and spinel. Bulletin of Volcanology, 64, 316-327.
36. TEIXELL, A., AYARZA, P., ZEYEN, H., FERNANDEZ, M. & ARBOLEYA, M. L. 2005. Effects of mantle upwelling in a compressional setting: the Atlas Mountains of Morocco. Terra Nova, 17, 456-461.
37. WOODLAND, A. B. & JUGO, P. J. 2007. A complex magmatic system beneath the Devès volcanic field, Massif Central, France: evidence from clinopyroxene megacrysts. Contributions to Mineralogy and Petrology, 153, 719-731.
38. ZIEG, M. J. & MARSH, B. D. 2002. Crystal size distributions and scaling laws in the quantification of igneous textures. Journal of Petrology, 43, 85-101.