摘要
文章以滨海新区北塘施工的第四系钻孔岩芯为研究对象,通过沉积岩石学、AMS 14 C测年及微体生物特征综合分析,详细研究了晚更新世晚期以来该区地层的岩性特征、沉积相及其空间分布形态,认为本区晚更新世以来发育了一套海相—陆相—海相—陆相交互沉积的地层,成因类型包括冲积、湖沼沉积以及海积;晚更新世以来的沉积环境由滨海近岸浅海至河口湾、潟湖、滨海平原再至冲积平原的演变,总体上该区晚更新世晚期以来属于海陆交互作用及海进—海退的演变过程。
Based on analysis of sedimentary petrology,ages of AMS 14 C and characteristics of microorganism of core samples from bore holes operated in the north Tanggu,Binhai New Area,Tianjin are detaily studied lithologic characteristics of the sedimentary strata,sedimentary ficies and morphology of their spatial distribution.Since the Late-Pleistocene a alternating sequence of marine-continental-marine-continental sedimentary rock has been developed including alluvial,lacustrine and marine sediments.The sedimentary environment evolved as coastal shallow sea-viver mouth bay-lacustrine-coastal plain-alluvial plain,a general transgression-regression process.
作者
郭立君
董路阳
张全
王林海
朵兴芳
GUO Lijun;DONG Luyang;ZHANG Quan;WANG Linhai;DUO Xingfang(Tianjin Institute of Geological Survey,Tianjin 300191,China)
出处
《地质找矿论丛》
CAS
CSCD
2019年第4期588-594,共7页
Contributions to Geology and Mineral Resources Research
基金
天津市国土资源和房屋管理局项目“滨海新区地下水及地质环境调查评价”（编号：国土房任[2015]1号）资助
关键词
沉积环境
微体生物
晚更新世
滨海新区
天津
sedimentary environment
microorganism
Late Pleistocene
Binhai New Area
Tianjin
