Sedimentation in the Early Cretaceous basin of West Siberia and its influence on oil and gas potential
S. V. Ershov, K. V. Zverev, V. A. Kazanenkov, and Yu. N. Karogodin
Keywords: West Siberia, Neocomian, avalanche sedimentation, clinoform
Pages: 1908-1916
Abstract
The opinions about the structure of the Neocomian deposits in West Siberia are discussed. We defend the viewpoint of its clinoform structure. According to studies performed, clinoforms are bodies of transgressive-regressive sedimentation cycles (cyclites) formed during avalanche sedimentation. Their structure involves two types of sand-siltstone reservoirs related to shallow-water shelf and distal fairly deep-water sediments, each containing a wide range of traps. Clinoforms are stratigraphic and petroliferous subdivisions calling for independent complex studies.
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