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Volcanic Rock Geological Characteristics and Tectonic Significance of the Late Paleozoic Yili Block in the Western Tianshan, Xinjiang
详细信息   
摘要

This Paper were systematically summary that the Late Paleozoic volcanic spatiotemporal distribution and geological characteristics,rocks chemistry characteristics of Yili basin in the West Tianshan,the Late Paleozoic volcanic basin mainly by Late Devonian to Early Permian volcanic composition,its formation with South Tianshan oceanic evolution relevant,Late Devonian-Early Carboniferous Dahalajunshan formation volcanic as Tianshan South ocean basin subduction formed calcium alkaline volcanic,Late Carboniferous Yishijilike formation volcanic rocks is composed under extrusion environment transite to extensional environmental,and was composed by calcium alkaline volcanic and alkaline volcanic. Early Permian Wulang formation volcanic compared postorogenic with rift characteristics bimodal volcanic combination.

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