【摘要】 本文从古生物特征、岩性特征及区域地层分布规律入手，对克参1井白垩系划分对比进行了详细探讨，并解释了白垩系厚度巨大及未钻遇侏罗系的原因。指出：井探2700～6150米地层归属白垩系，可划分为三个组，本井未钻遇侏罗系。更多还原

【Abstract】 Starting with the analyses of paleontological, lithological characters and strata regional distri-bution, this paper pays more attention to the division and correlation of Cretaceous System andgives a explanation why cretaceous is enormous in thickness and Jurassic has not been encounteredby drilling. A Suggestion is made here that the sediments at depths 2700~6150m belong to Creta-ceous System which can be divided into three Formations and no Jurassic sediments has been en-countered in this well.更多还原