海洋地质前沿2017，Vol.33Issue(4)：22-30,9.DOI:10.16028/j.1009-2722.2017.04004
东海陆架南部海域及周边陆域白垩纪海侵标志及地质意义
CRETACEOUS TRANSGRESSION IN THE SOUTHERN EAST CHINA SEA SHELF BASIN AND ADJACENT LAND AREAS: EVIDENCE AND GEOLOGICAL SIGNIFICANCE
摘要
Abstract
There seems a thick and wide Mesozoic in the southern part of the East China Sea Shelf Basin under the Cenozoic,in which a large reserve of gas and oil has been discovered.However,the Mesozoic palaeogeographic pattern of the area remains unclear,that restrict the further exploration of the basin.In this paper,we made an integrated analysis of lithofacies and palaeogeography for the Cretaceous with a few drilling data and incomplete outcrops upon the basis of single factor facies analysis.It is revealed that the distribution of depositional characteristics,such as the paleontological,mineralogical and geochemical indicators,is all in a transgressive pattern from Radiolarian (Huatung basin)-Ammonite and Lamellibranchia (Taiwan)-Glauconite (the East China Sea Shelf Basin)-Shipu Limestone (Xiangshan,Zhejiang)-Marine fish (Zhejiang)-Phaeophyta,Rhodophyta and Plants (Wuyishan,Fujian) from SE to NW.The depositional environment changes in a general trend from abysmal environment to shallow sea,transitional zone,and to land.This trend probably indicates that the direction of transgression in the early Cretaceous was from SE to NW,which controlled the lithofacies and palaeogeographic pattern of the early Cretaceous in the southern part of the East China Sea Shelf Basin and adjacent land areas.High quality source rocks,such as those in the Chawan Formation,were formed in the transgression.关键词
海侵/白垩纪/闽浙隆起区/东海陆架盆地Key words
transgression/Cretaceous/Fujian and Zhejiang Uplift area/East China Sea Shelf Basin分类
海洋科学引用本文复制引用
许璐,杨长清,王海荣..东海陆架南部海域及周边陆域白垩纪海侵标志及地质意义[J].海洋地质前沿,2017,33(4):22-30,9.基金项目
国家自然科学基金面上项目(41476053) （41476053）
中国地质调查局项目(DD20160153) （DD20160153）
