Results 141 to 150 of about 799 (197)

A brief analysis on contribution of Emeishan basalt to the formation of deposits in Guizhou

open access: yesIOP Conference Series: Earth and Environmental Science, 2017
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Geodynamic Significances of the Emeishan Basalts

Earth Science Frontiers, 2009
Abstract The Emeishan large igneous province has been suggested to be formed from mantle plumes; yet, the plume formation is debated. Radiometric dating showed that the main phase of the Emeishan basalts (EBs) occurred at ∼260 Ma, corresponding to the end-Guadalupian mass extinction.
Chengying LIU, Rixiang ZHU
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Late Permian Emeishan Flood Basalts in Southwestern China

Earth Science Frontiers, 2007
Abstract Current debates over mantle plumes are centered on three assumptions namely: (1) cylindrical thermally anomalous materials which arise from the core mantle boundary; (2) high temperature of mantle plumes; (3) mantle plumes are stationary. A full test of the validity of these assumptions requires a comprehensive evaluation using techniques ...
Yigang XU   +6 more
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Early Wuchiapingian cooling linked to Emeishan basaltic weathering?

Earth and Planetary Science Letters, 2018
Abstract The last glaciation during the late Paleozoic ice age commenced at around the Guadalupian–Lopingian (G–L) boundary and is synchronous with the emplacement of the Emeishan large igneous province. Using CA-TIMS zircon U–Pb dating, we obtained an age of 259.51 ± 0.21 Ma for the uppermost tuff from the Puan volcanic sequence in the eastern ...
Jianghai Yang   +7 more
openaire   +2 more sources

Variety and complexity of the Late-Permian Emeishan basalts: Reappraisal of plume–lithosphere interaction processes

Lithos, 2010
Abstract New petrographic, major element, trace element and isotopic data (Sr and Nd) for 17 Emeishan basalts from the Lijiang-Shangri-La area of SW China are integrated with published data comprising ~ 300 mafic rocks from the Emeishan large igneous province (LIP) to create a comprehensive model for this LIP event.
He, Qi   +4 more
openaire   +1 more source

Madouzi-type (nodular) sedimentary copper deposit associated with the Emeishan basalt

Science China Earth Sciences, 2011
Ore minerals in the sedimentary-type Cu deposits in the Xuanwei Formation overlying the Emeishan basalt are dominated by copper sulfides and native copper. As the ores mostly exhibit concretionary structure, previous researchers named them the “Madouzi-type Copper Deposit”.
FuDong Wang   +2 more
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