DOI: 10.1016/j.palaeo.2012.09.027
论文题名: Pyrite morphology in the first member of the Late Cretaceous Qingshankou Formation, Songliao Basin, Northeast China
作者: Wang P. ; Huang Y. ; Wang C. ; Feng Z. ; Huang Q.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2013
卷: 385 起始页码: 125
结束页码: 136
语种: 英语
英文关键词: First member of the Qingshankou Formation
; Pyrite morphology
; Redox condition
; Songliao Basin
; South well of "SLCORE I"
英文摘要: The study of sedimentary pyrite morphological characteristics provides useful information on depositional environments and early diagenic processes and can be used as an indicator of redox conditions in ancient lake bottom waters. The results of this study in the Songliao basin in northeastern China show that euhedral crystals and framboids are the dominant pyrite forms in the mudstones of the first member of the Qingshankou Formation (K2qn1). The framboidal size distribution indicates that during the deposition of K2qn1, redox conditions in the bottom water fluctuated from oxic-dysoxic to euxinic-anoxic to oxic-dysoxic. The presence of euxinic-anoxic bottom water suggests that an anoxic event developed in the Songliao ancient-lake and continued for 196ka. The development of an anoxic bottom environment was the most important factor in hydrocarbon source rock formation in the Songliao Basin. © 2012 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/69701
Appears in Collections: 过去全球变化的重建
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作者单位: Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing 100037, China; China University of Geosciences, Beijing 100083, China; Exploration and Development Research Institute of the Daqing Oil Field Corporation Ltd., Daqing 163712, China
Recommended Citation:
Wang P.,Huang Y.,Wang C.,et al. Pyrite morphology in the first member of the Late Cretaceous Qingshankou Formation, Songliao Basin, Northeast China[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2013-01-01,385