Abstract
Composition of chromiferous spinel included in olivines of Mg-rich basalts and gabbros of the Deccan Traps (Gujarat and Western Ghats) are reported here. They vary from Al-rich compositions [Al2O3 = 53wt.%; Cr#, 100Cr/(Cr + Al) = 12] to Cr-rich compositions [Cr2O3 = 51wt.%; Cr# = 84], and from Cr-Al rich compositions towards Cr-rich Ti-magnetite (TiO2 up to 23 wt.%, ulvöspinel up to 67mol.%). The Mg# [100Mg/(Mg + Fe2+)] of spinel decreases from 81 to nearly zero. The highest Cr# has been found in the Bushe Fm., Thakurvadi Fm., and some high-Ti basalts of the Pavagadh section, whereas some of the low-Ti basalts of Saurashtra have Al-rich compositions typical of spinels found in mid-ocean ridge basalts. The chemical composition of the Deccan Trap spinels is completely different compared to that observed in mantle spinel suites, with very few exceptions. The decreasing Al and increasing Fe and Ti of spinel seems to be mainly the result of decrease of Mg in the locally coexisting melts and favourable cationic substitutions in the lattice. There is barely any evidence of general relationships between the composition of the Deccan spinels and inferred mantle sources of the host magmas. Pyroxene inclusions in spinels may witness a high-pressure stage of crystallization, but the possibility of non-equilibrium crystallization, or even magma mixing, cannot be ruled out. Overall, the compositional ranges of chromiferous spinel in the Deccan Traps closely match those observed in the other Large Igneous Provinces having mafic/ultramafic intrusions and mafic magma compositions (e.g., Siberian Traps, Karoo, Emeishan).
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References
Ahmad M and Shrivastava J P 2004 Iron-titanium oxide geothermometry and petrogenesis of lava flows and dykes from Mandla lobe of the eastern Deccan volcanic province, India; Gondwana Res. 7 563–577.
Allan J F, Sack R O and Batiza R 1988 Cr-rich spinels as petrogenetic indicators: MORB-type lavas from the Lamont seamount chain, eastern Pacific; Am. Mineral. 73 741–753.
Arai S 1994 Characterization of spinel peridotites by olivinespinel compositional relationships: Review and interpretation; Chem. Geol. 113 191–204.
Barnes S J and Kunilov V Y 2000 Spinels and Mg-ilmenites from the Noril’sk 1 and Talnakh intrusions and other mafic rocks of the Siberian flood basalt province; Econ. Geol. 95 1701–1717.
Barnes S J and Roeder P L 2001 The range of spinel compositions in terrestrial mafic and ultramafic rocks; J. Petrol. 42 2279–2302.
Beane J E and Hooper P R 1988 A note on the picrite basalts from the Western Ghats, Deccan Traps, India; Geol. Soc. India Memoir 10 117–133.
Beane J E, Turner C A, Hooper P R, Subbarao K V and Walsh J N 1986 Stratigraphy, composition and form of the Deccan basalts, Western Ghats, India; Bull. Volcanol. 48 61–83.
Bernstein S, Hanghøj K, Kelemen P B and Brooks C K 2006 Ultra-depleted, shallow cratonic mantle beneath West Greenland: Dunitic xenoliths from Ubekendt Ejland; Contrib. Mineral. Petrol. 152 335–347.
Cawthorn R G and Biggar G M 1993 Crystallization of titaniferous chromite, magnesian ilmenite and armalcolite in tholeiitic suites in the Karoo Igneous Province; Contrib. Mineral. Petrol. 114 221–235.
Chenet A-L, Quidelleur X, Fluteau F, Courtillot V and Bajpai S 2007 40K-40Ar dating of the main Deccan large igneous province: Further evidence of KTB age and short duration; Earth Planet. Sci. Lett. 263 1–15.
Cox K G and Hawkesworth C J 1985 Geochemical stratigraphy of the Deccan Traps at Mahabaleshwar, Western Ghats, India, with implication for open system processes; J. Petrol. 26 355–387.
Collier J S, Sansom V, Ishizuka O, Taylor R N, Minshull T A and Whitmarsh R B 2008 Ages of Seychelles-India breakup; Earth Planet. Sci. Lett. 272 264–277.
Della-Pasqua F N, Kamenetsky V S, Gasparon M, Crawford A J and Varne R 1994 Al-spinels in primitive arc volcanics; Mineral. Petrol. 53 1–26.
Devey C W and Stephens W E 1992 Deccan-related magmatism west of the Seychelles-India rift; In: Magmatism and the causes of continental break-up; Storey B C, Alabaster T and Pankhurst R J (eds); Geol. Soc. London, Spec. Publ. 68 271–291.
Dick H J B and Bullen T 1984 Chromian spinel as a petrogenetic indicator in abyssal and alpine-type peridotites and spatially associated lavas; Contrib. Mineral. Petrol. 86 54–76.
Eales H V and Snowden D V 1979 Chromiferous spinels of the Elephant’s Head dike; Econ. Geol. 14 227–242.
Finnigan C G, Brenan J M, Mungall J E and McDonough W F 2008 Experiments and models bearing on the role of chromite as a collector of platinum group minerals by local reduction; J. Petrol. 49 1647–1665.
Furuyama K, Hari K R and Santosh M 2001 Crystallization history of primitive Deccan basalt from Pavagadh hill, western India; Gondwana Res. 4 427–436.
Garuti G, Pushkarev E V, Zaccarini F, Cabella R and Anikina E 2003 Chromite composition and platinumgroup mineral assemblage in the Uktus Uralian-Alaskantype complex (Central Urals, Russia); Mineralium Deposita 38 312–326.
Grachev A F, Tselmovich V A, Korchagin O A and Kollmann H A 2007 Two spinel populations from the Cretaceous-Paleogene (K/T) boundary clay layer in the Gams stratigraphic sequence, eastern Alps; Russian J. Earth Sci. 9 ES2002, doi: 10.2205/2007/ES000297.
Gradstein F M, Ogg J G, Smith A G, Bleeker W and Lourens L J 2004 A new geologic time scale with special reference to Precambrian and Neogene; Episodes 27 83–100.
Hellebrand E, Snow J E, Hoppe P and Hofmann A W 2002 Garnet-field melting and late-stage refertilization in residual abyssal peridotites from the Central Indian Ridge; J. Petrol. 43 2305–2338.
Kamenetsky V S, Crawford A J and Meffre S 2001 Factors controlling chemistry of magmatic spinel: An empirical study of associated olivine, Cr-spinel and melt inclusions from primitive rocks; J. Petrol. 42 655–671.
Keller G, Stinnesbeck W, Adatte T and Stüben D 2003 Multiple impacts across the Cretaceous-Tetriary boundary; Earth Sci. Rev. 62 327–363.
Khadri S F R, Subbarao K V and Walsh J N 1999 Stratigraphy, composition and form of the east Pune basalts, western Deccan basalt province, India; In: Deccan Volcanic province, Subbarao K V (ed.); Geol. Soc. India Memoir 43 179–202.
Krishnamurthy P and Cox K G 1977 Picrite basalts and related lavas from the Deccan Traps of Western India; Contrib. Mineral. Petrol. 62 53–75.
Krishnamurthy P, Pande K, Gopalan K and Macdougall J D 1988 Upper mantle xenoliths in alkali basalts related to Deccan Trap volcanism; In: Deccan Flood Basalts, Subbarao K V (ed.); Geol. Soc. India Memoir 10 53–67.
Krishnamurthy P, Pande K, Gopalan K and Macdougall J D 1999 Mineralogical and chemical studies on alkaline basaltic rocks of Kutch, Gujarat, India; In: Deccan Volcanic Province, Subbarao K V (ed.), Geol. Soc. India Memoir 43 757–783.
Lee Y I 1999 Geotectonic significance of detrital chromian spinel: A review; Geosci. J. 3 23–29.
Lightfoot P C, Hawkesworth C J, Devey C W, Rogers N W and Van Calsteren PWC 1990 Source and differentiation of Deccan Trap lavas: Implications of geochemical and mineral chemical variations; J. Petrol. 31 1165–1200.
Mahoney J J 1988 Deccan Traps; In: Flood Basalts, Macdougall J D (ed.), pp 151–194, Kluwer, Dordrecht.
Mahoney J J, Duncan R A, Khan W, Gnos E and McCormick G R 2002 Cretaceous volcanic rocks of the south Tethyan suture zone, Pakistan: Implications for the Reunion hotspot and Deccan Traps; Earth Planet. Sci. Lett. 203 295–310.
Mahoney J J, Sheth H C, Chandrasekharam D and Peng Z X 2000 Geochemistry of flood basalts of the Toranmal section, northern Deccan Traps, India: Implications for regional Deccan stratigraphy; J. Petrol. 41 1099–1120.
Melluso L 1992 Caratteristiche petrologiche e geochimiche di vulcaniti continentali del Deccan, India; PhD thesis, Ferrara University, 140p, unpublished.
Melluso L, Beccaluva L, Brotzu P, Gregnanin A, Gupta A K, Morbidelli L and Traversa G 1995 Constraints on the mantle sources of the Deccan Traps from the petrology and geochemistry of the basalts of Gujarat State (Western India); J. Petrol. 36 1393–1432.
Melluso L, Barbieri M and Beccaluva L 2004 Petrogenesis and regional chemical correlations of the flood basalt sequence in the Central Deccan Traps, India; J. Earth Syst. Sci. 114 587–603.
Melluso L, Morra V, Brotzu P, Tommasini S, Renna M R, Duncan R A, Franciosi L and d’Amelio F 2005 Geochronology and petrogenesis of the Cretaceous Antampombato-Ambatovy complex and associated dyke swarm, Madagascar; J. Petrol. 46 1963–1996.
Melluso L, Mahoney J J and Dallai L 2006a Mantle sources and crustal input as recorded in High-Mg Deccan Trap basalts of Gujarat (India); Lithos 89 259–274.
Melluso L, Morra V and Fedele L 2006b An overview of phase chemistry and magmatic evolution in the Cretaceous flood basalt province of northern Madagascar; Periodico di Mineralogia 75 175–188.
Melluso L and Sethna S F 2010 Mineral composition of the Deccan Trap volcanic rocks, India: An overview; In: Topics in Igneous Petrology: A Tribute to Prof Mihir K Bose, Ray J, Sen G and Ghosh B (eds), Springer, in press.
Mukherjee A B and Biswas S 1988 Mantle derived spinel lherzolite xenoliths from Deccan Volcanic province, India: Implication for the thermal structure of the lithosphere underlying the Deccan Traps; J. Volcanol. Geoth. Res. 35 269–276.
Murari R, Krishnamurthy P, Tikhonenko P I and Gopalan K 1993 Magnesian ilmenites in picrite basalts from Siberian and Deccan Traps - additional mineralogical evidence for primary melt compositions (?); Min. Mag. 57 733–735.
Najman Y, Bickle M J, Bou-Dagher-Fadel M, Carter A, Garzanti E, Paul M, Wijbrans J, Willett E, Oliver G, Parrish R, Akhter S H, Allen R, Ando S, Chisty E, Reisberg L and Vezzoli G 2008 The Paleogene record of Himalayan erosion: Bengal Basin, Bangladesh; Earth Planet. Sci. Lett. 273 1–14.
Nimis P 1999 Clinopyroxene geobarometry of magmatic rocks. Part 2. Structural geobarometers for basic to acid, tholeiitic and mildly alkaline magmatic systems; Contrib. Mineral. Petrol. 135 62–74.
Peng Z X and Mahoney J J 1995 Drillhole lavas in the Deccan Traps and the evolution of the Reunion plume; Earth Planet. Sci. Lett. 134 169–185.
Peng Z X, Mahoney J J, Hooper P R, Harris C and Beane J E 1994 A role for lower continental crust in flood basalt genesis? Isotopic and incompatible element study of the lower six formations of the Western Deccan Traps; Geochim. Cosmochim. Acta 58 267–288.
Peng Z X, Mahoney J J, Hooper P R, Macdougall J D and Krishnamurthy P 1998 Basalts of the northeastern Deccan Traps, India: Isotopic and elemental geochemistry and relation to southwestern Deccan stratigraphy; J. Geophys. Res. 103 29,843–29,865.
Roeder P L, Gofton E and Thornber C 2006 Cotectic proportions of olivine and spinel in olivine-tholeiitic basalt and evaluation of pre-eruptive processes; J. Petrol. 47 883–900.
Roeder P L and Schulze D J 2008 Crystallization of groundmass spinel in kimberlite; J. Petrol. 49 1473–1495.
Sen G, Bizimis M, Das R, Paul D K, Ray A and Biswas S 2009 Deccan plume, lithosphere rifting, and volcanism in Kutch, India; Earth Planet. Sci. Lett. 277 101–111, doi: 10.1016/j.epsl.2008.10.002.
Sheth H C 2005 From Deccan to Réunion: No trace of a mantle plume; Geol. Soc. Amer. Spec. Paper 388 477–501.
Sheth H C and Melluso L 2008 The Mount Pavagadh volcanic suite, Deccan Traps: Geochemical stratigraphy and magmatic evolution; J. Asian Earth Sci. 32 5–21.
Subbarao K V and Hooper P R 1988 Reconnaissance geological map of the Western Ghats; In: Deccan Flood Basalts; Subbarao K V (ed), Geol. Soc. India Memoir 10.
Wang C Y, Zhou M-F and Zhao D 2005 Mineral chemistry of chromite from the Permian Jinbaoshan Pt-Pd-sulphidebearing ultramafic intrusion in SW China with petrogenetic implications; Lithos 83 47–66.
Wang C Y, Zhou M-F and Zhao D 2008 Fe-Ti-Cr oxides from the Permian Xinjie mafic-ultramafic layered intrusion in the Emeishan large igneous province, SW China: Crystallization from Fe and Ti-rich basaltic magmas; Lithos 102 198–217.
Zhu B, Kidd W S F, Rowley D B and Currie B S 2004 Chemical compositions and tectonic significance of chrome-rich spinels in the Tianba Flysch, southern Tibet; J. Geol. 112 417–434.
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Melluso, L., de’ Gennaro, R. & Rocco, I. Compositional variations of chromiferous spinel in Mg-rich rocks of the Deccan Traps, India. J Earth Syst Sci 119, 343–363 (2010). https://doi.org/10.1007/s12040-010-0021-x
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DOI: https://doi.org/10.1007/s12040-010-0021-x