Petrology and geochemistry of postcollisional volcanic rocks from the Tibetan plateau: Implications for lithosphere heterogeneity and collision-induced asthenospheric mantle flow
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Published:January 01, 2006
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Xuanxue Mo, Zhidan Zhao, Jinfu Deng, Martin Flower, Xuehui Yu, Zhaohua Luo, Youguo Li, Su Zhou, Guochen Dong, Dicheng Zhu, Liangliang Wang, 2006. "Petrology and geochemistry of postcollisional volcanic rocks from the Tibetan plateau: Implications for lithosphere heterogeneity and collision-induced asthenospheric mantle flow", Postcollisional Tectonics and Magmatism in the Mediterranean Region and Asia, Yildirim Dilek, Spyros Pavlides
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This article summarizes the geological setting, spatial-temporal distribution, and major-element, trace-element, and Nd-Sr-Pb isotopic compositional variation of rocks representative of Tibetan postcollisional magmatic activity. The implications of petrogenesis and spatial-temporal distribution are discussed in relation to lithospheric mantle heterogeneity and a possible role for collision-induced asthenospheric mantle flow. Rocks indicative of postcollisional volcanism are widely distributed across the terranes making up the Tibetan plateau. Three stages of activity are recognized (ca. 45–25, 25–5, and 5–0 Ma), mostly conforming to potassic to ultrapotassic shoshonitic and high-potassium calc-alkaline types. These show strong relative enrichments in large-ion lithophile elements (LILE), U, Th, and...
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Postcollisional Tectonics and Magmatism in the Mediterranean Region and Asia

GeoRef
- alkaline earth metals
- Asia
- asthenosphere
- China
- earthquakes
- Eurasian Plate
- Far East
- focal mechanism
- geochemistry
- heterogeneity
- igneous rocks
- inclusions
- Indian Plate
- isotope ratios
- isotopes
- Kunlun Mountains
- lead
- lithogeochemistry
- lithophile elements
- lithosphere
- major elements
- mantle
- mantle wedges
- metals
- Nd-144/Nd-143
- neodymium
- Pb-206/Pb-204
- Pb-207/Pb-204
- Pb-208/Pb-204
- petrology
- plate collision
- plate tectonics
- post-tectonic processes
- radioactive isotopes
- rare earths
- rheology
- spatial distribution
- Sr-87/Sr-86
- stable isotopes
- strontium
- temporal distribution
- Tibetan Plateau
- trace elements
- volcanic rocks
- xenoliths
- Xizang China