渤海湾滨海平原全新统层型剖面地层划分与建组  

Stratigraphic division and establishment of a formation for the Holocene stratotype section in the coastal plain of the Bohai Bay.

作　　者：李凤林[1] 王宏[1] 王云生[1] 张金起[1] 张玉发[1] 李建芬[1] 林防[1] 阎玉忠[1] 龙天才[1] 

机构地区：[1]中国地质调查局天津地质矿产研究所,天津300170

出　　处：《地质通报》2005年第2期124-135,共12页Geological Bulletin of China

基　　金：中国地质调查局<淮淀乡幅区域地质调查(J50E005015;1:50000)>项目成果

摘　　要：天津市宁河县俵口乡兴坨全新统层型剖面的地层划分与建组,是在近年来1∶5万淮淀乡幅(J50E005015)区域地质调查的基础上,经过地质调查,岩性描述,孢粉、软体、微体古生物和重矿物鉴定,14C、OSL测年,古地磁测量、化学分析和粒度分析等系统研究建立起来的。本文从气候、构造、地理等古环境角度对岩石地层、磁性地层、气候地层、生物地层、年代地层、事件地层、化学地层和矿物地层等进行多重地层划分与对比。建组的三分层次明显,符合全国地层委员会有关层型剖面和建组的基本要求。The stratigraphic division of the Holocene Xingtuo stratotype section is made and a formation is established on the basis of 1∶50000 regional geological mapping of the Huaidian Town Sheet (J50E005015) in recent years through geological survey, lithological description, sporopollen, mollusk and microfossil analyses, heavy mineral identification, 14C and OSL dating, paleomagnetic survey and chemical and grain size analyses. The lithostratigraphy, magnetostratigraphy, climato-stratigraphy, biostratigraphy, chronostratigraphy, event stratigraphy, chemico-stratigraphy and mineral stratigraphy and other multiple stratigraphic division and correlation are made in the paleoclimatic, paleostructural and paleogeographic contexts. The tripartite subdivisions of the formation establishment are pronounced. The stratigraphic division and formation establishment meet with the related basic requirements stipulated in the 'Stratigraphic Guide of China'.

关 键 词：渤海湾滨海平原 全新统层型剖面 分层与建组 

分 类 号：P534.632[天文地球—第四纪地质学]