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Large Igneous Provinces from Gondwana and Adjacent Regions
Geological Society, London, Special Publications
Large Igneous Provinces from Gondwana and Adjacent Regions
CONTAINS OPEN ACCESS
Author(s)
B. C. Storey
B. C. Storey
University of Canterbury, New Zealand
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The Geological Society of London
Volume
463
Copyright:
Gold Open Access: This article is published under the terms of the CC-BY 3.0 license.
ISBN electronic:
9781786203441
ISBN print:
9781786203250
Publication date:
January 01, 2018
Book Chapter
The Panjal Traps
Author(s)
J. Gregory Shellnutt
Department of Earth Sciences, National Taiwan Normal University, 88 Tingzhou Road Section 4, Taipei 11677, Taiwan
J. Gregory Shellnutt
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Published:January 01, 2018
Abstract:
The Early Permian (290 Ma) Panjal Traps are the largest contiguous outcropping of volcanic (basaltic, andesitic and silicic) rocks within the Himalaya that are associated with the Late Palaeozoic break-up of Gondwana. The basaltic Panjal Traps have compositional characteristics that range from continental tholeiite to ocean-floor basalt but it is clear that crustal contamination has played a role in their genesis. The basalts that show limited evidence for contamination have Sr–Nd isotopes (87Sr/86Sri = 0.7043–0.7073; εNd(t) = 0 ± 1) similar to a chondritic (subcontinental lithospheric mantle) source, whereas the...
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Index Terms/Descriptors
- alkaline earth metals
- andesitic composition
- Asia
- basaltic composition
- chemical composition
- crust
- eruptions
- extension tectonics
- felsic composition
- genesis
- Gondwana
- Himalayas
- igneous rocks
- intrusions
- isotope ratios
- isotopes
- Karakoram
- large igneous provinces
- Lower Permian
- mafic composition
- magma chambers
- magma contamination
- magmas
- magmatic differentiation
- mantle
- mantle plumes
- melts
- metals
- mineral deposits, genesis
- mixing
- Paleozoic
- partial melting
- passive margins
- Permian
- petrography
- plate tectonics
- plutonic rocks
- plutons
- rift zones
- Sr-87/Sr-86
- stable isotopes
- strontium
- tectonics
- ultramafic composition
- ultramafics
- upper Paleozoic
- volcanic rocks
- volcanism
- Panjal Traps
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