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Pyrite is a ubiquitous authigenic mineral in modern anoxic sediments and occurs in ancient sedimentary rocks.Study of sedimentary pyrite morphology, which can provide useful information on deposition environments and early diagenetic processes,has become an important aspect for reconstruction of palaeoenviroment.The Upper Cretaceous Qingshankou Formation Unit 1(K_2qn~1)lithology,which occured in the south well of the SLCORE I for Continental Cretaceous Scientific Drilling Project in
Pyrite is a ubiquitous authigenic mineral in modern anoxic sediments and occurs in ancient sedimentary rocks.Study of sedimentary pyrite morphology, which can provide useful information on deposition environments and early diagenetic processes, has become an important aspect for reconstruction of paeoenviroment. Upper Cretaceous Qingshankou Formation Unit 1 (K_2qn ~ 1) lithology, which occured in the south well of the SLCORE I for Continental Cretaceous Scientific Drilling Project in