地球学报2017，Vol.38Issue(3)：345-358,14.DOI:10.3975/cagsb.2017.03.05
陆相下白垩统阜新阶重新厘定及其层型剖面
Redefinition of the Lower Cretaceous Continental Fuxinian Stage and Its Stratotype Section
摘要
Abstract
Continental stratotypes and definitions of the Fuxinian Stage were stipulated by studying systematically litho-stratigraphy, multi-category fossils and sedimentary facies at Binggou of Jianchang County, Liaoning Province. The Binggou Formation in Jianchang is maily composed of conglomerates, sandstones, mudstones and coal layers and can be divided into three members with coal layers in the 2nd member. Its facies sequence shows a set of lacustrine fan-delta sediments, such as sand-gravel dams, distributary channels, mud-sandy grounds, peat swamps, and flood plains. Many bio-stratigraphic assemblages and zones were distinguished, based on occurrences and evolutionary sequences of fossils and other referential data, i.e., 3 assemblage zones of conchostracan, 2 assemblages of sporo-pollen, 1 assemblage of bivalve and 2 assemblages of ostracodan. The bottom-boundary stratotype of Fuxinian Stage in the West Mountain of Binggou was chosen, and the fossil mark of bottom-boundary is evolutionary occurrence of conchostracanOrthestheropsis originalis Tian (sp. nov.). According to sporo-pollen and ostracodan fossils, the age of Fuxinian could be correlated to the Barremian – the Albian of the National Stratigraphy Standards.关键词
阜新阶/陆相层型/早白垩世/建昌冰沟Key words
Fuxinian Stage/continental stratotype/Lower Cretaceous/Binggou of Jianchang分类
天文与地球科学引用本文复制引用
田树刚,张永生,李子舜,王大宁..陆相下白垩统阜新阶重新厘定及其层型剖面[J].地球学报,2017,38(3):345-358,14.基金项目
本文由中国地质调查局和全国地层委员会项目(编号: 1212011120142)和国家自然科学基金项目(编号: 41472027 （编号: 1212011120142）
41572098)联合资助. This study was supported by China Geological Survey and National Stratigraphic Commission of China (No. 1212011120142), and National Natural Science Foundation of China (Nos. 41472027 and 41572098). （No. 1212011120142）
