Large Igneous Provinces from Gondwana and Adjacent Regions
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Mantle source heterogeneity in continental mafic Large Igneous Provinces: insights from the Panjal, Rajmahal and Deccan basalts, India
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Published:January 01, 2018
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CiteCitation
K. Vijaya Kumar, More B. Laxman, K. Nagaraju, 2018. "Mantle source heterogeneity in continental mafic Large Igneous Provinces: insights from the Panjal, Rajmahal and Deccan basalts, India", Large Igneous Provinces from Gondwana and Adjacent Regions, S. Sensarma, B. C. Storey
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Abstract:
In this paper we illustrate the geochemical diversity of the basalts of Panjal (c. 289 Ma), Rajmahal (c. 117 Ma) and Deccan (c. 65 Ma) continental large igneous provinces (continental LIPs) from India as controlled by multiple mantle sources. The Panjal primitive basalts are formed by 5–20%, Rajmahal basalts by 10–20% and Deccan picritic basalts by 1–20% melting of the mantle. The depth of melting beneath Deccan is greater than beneath Rajmahal, which greater than beneath Panjal. We have categorized the Panjal, Rajmahal and Deccan basalts into Type I and Type II. The Type I basalts...
- Asia
- assimilation
- asthenosphere
- basalts
- chemical composition
- continental lithosphere
- Deccan Traps
- flood basalts
- fractional crystallization
- genesis
- geochemistry
- heterogeneity
- igneous rocks
- India
- Indian Peninsula
- Jurassic
- large igneous provinces
- lithosphere
- mafic composition
- magma contamination
- magmas
- magmatic differentiation
- magmatism
- mantle
- mantle plumes
- Mesozoic
- migration of elements
- mobilization
- partial melting
- Phanerozoic
- Rajmahal Series
- variations
- volcanic rocks
- volcanism
- Rajmahal Traps
- Panjal Traps