天津滨海新区全新世沉积特征和沉积过程  

Holocene Epoch Sedimentation Characteristics and Process in Tianjin New Coastal Region

作　　者：赵长荣[1] 胥勤勉[1] 袁桂邦[1] 李亚平[2] 胡云壮[1] 肖国强[1] 杨吉龙[1] 

机构地区：[1]天津地质矿产研究所,天津300170 [2]天津市地质工程勘察院,天津300000

出　　处：《人民黄河》2012年第8期48-50,53,共4页Yellow River

基　　金：中国地质调查局国土资源大调查项目(1212010610408;1212010814004;1212011120089)

摘　　要：从地貌、沉积和年代等方面分析了天津滨海新区的形成演变过程。研究区中部和南部主要为不同时期的古黄河三角洲,每期古黄河三角洲发育时均形成前三角洲、三角洲前缘和潮间带等沉积层序,三角洲的不同部位分别形成河控三角洲和潮控三角洲,三角洲废弃后,形成三角洲平原—贝壳堤—滨海沙坝的地貌体系。研究区北部的沉积层序和地貌特征反映了少泥沙河流在海洋动力逐渐减弱条件下的河海相互作用过程。The formation and development process of new coastal region in Tianjin were analyzed from such aspects as geomorphology, sedimenta- tion and chronology. There were some old Yellow River deltas in different periods in the south and center of the region, each phase of these old Yellow River deltas developed into depositional sequence as prodelta, delta front and intertidal flat in vertical direction, and different part of these deltas formed tidal-dominated delta and river-dominated delta respectively early and always developed into deltaic plain-shell dike-beach ridge in transverse direction after delta discarded. The depositional sequence and geomorphology of northern part of research regain reflected sea-land inter- action in the condition of the ocean dynamics weakening and little sediment supply.

关 键 词：全新世 地貌演变 沉积层序 贝壳堤 黄河三角洲 天津滨海新区 

分 类 号：P512.31[天文地球—地质学] TV882.1[水利工程—水利水电工程]