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《Journal of Chengdu University of Technology(Science & Technology Edition)》 2004-04
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Volcanism during activity period of Beishan craton rift in Xinjiang, China

XIAO Yuan-fu, WANG Dao-yong, DEN Jiang-hong, SUN Yan, WU De-chao (College of Earth Sciences, Chengdu University of Technology, China)  
The volcanic activities were frequent during the activity period of the craton rift in the Western Beishan Tectonic Belt, Xinjiang, and the volcanism was strong too. The volcanic rocks were distributed widely in the strata of the late Paleozoic Era and developed concentratively in the upper section of the (Lower) Carboniferous Series, the Upper Carboniferous Series and the Lower Permian Series. These (volcanic) rocks were interlayered with the normal sedimentary rocks in the same time. According to the study of the petrostratigraphy, occurrence of the volcanic rock beds and their types of contact, the (volcanism) has four cycles, and they contain nine rhythms of volcanic effusion. On the basis of studying the geological characteristics of the volcanic rocks, rock types, petrochemical and trace elements geochemical features in the study area, the authors discuss their evolution and formation environment.
【Fund】: 中国地质调查局资助项目
【CateGory Index】: P588.145
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