Late Cretaceous tempestite in northern Songliao Basin, China

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• 作者：Xuan Liu ; Jianhua Zhong ; Rodney Grapes ; Shuhua Bian ; Chen Liang
• 关键词：Tempestite ; Sedimentary structures ; Bouma-like sequences ; Sedimentary models ; Northern Songliao Basin
• 刊名：Journal of Asian Earth Sciences
• 出版年：2012
• 出版时间：29 August, 2012
• 年：2012
• 卷：56
• 期：Complete
• 页码：33-41
• 全文大小：1299 K

文摘

A Late Cretaceous tempestite in the northern Songliao Basin, China, was studied based on thin-section and granularity analyses of borehole samples. The results indicated that the local tempestite can be categorized into several clastic constituent types, which include bottom erosion structures, graded beds, hummocky cross stratification (HCS), parallel beds, wave marks, and bioturbation structures. Based on these sedimentary characteristics and vertical sequence combinations, four tempestite sedimentary models were developed: (I) an autochthonous tempestite facies, (II) an allochthonous tempestite facies (the proximal subfacies), (III) a second allochthonous tempestite facies (the distal subfacies), and (IV) a turbidite facies.