中国海洋大学学报（自然科学版）2017，Vol.47Issue(12)：97-109,13.DOI:10.16441/j.cnki.hdxb.20160193
黄河三角洲GJ1孔晚第四纪地层层序及全新世沉积单元划分
The Late Quaternary Stratigraphic Sequence and Holocene Deposit Unit of GJ1 Borehole in the Huanghe (Yellow River) Delta
摘要
Abstract
The study of the stratigraphic structure of a large river-dominated delta formed by a natural river system is beneficial to understanding the delta sequence stratigraphy,river avulsion and sea-level rise.Using the data of grain-sizeand C-14 dating of a 78 m long drilling core in the Huanghe (Yellow River)Delta,together with previous studies,we divided sedimentary facies of GJ1 borehole from the late Quaternary by methods of sequence stratigraphyand chronostratigraphy.The GJ1 core formed during about 60 ka B.P.to present.From below to top,the sedimentary faciesof GJ1 core are,(1)delta,fluvial and delta deposits at depth of 49.2～78.0 m.(2)fluvial sediment (45.9～49.2 m),formed during MIS4period.(3)coastal,nearshore and fluvial deposits (24.6～45.9 m).(4)fluvial sediment (19.4～24.6 m).(5)Holocene fluvial,coastal,delta front,interdistributary bayandfluvial deposits(above19.4 m),including the riverbed during 1917-1926 and abandoned channel deposits above 4.5 m.In addition,this paper attempts to compare the grain size parameter with the Holocene climate change records,and we found that the average grain size of the GJ1 core is relatively coarsein the cold period and wise versa.And three period of "cool poles,dry tropics"events can be identified at 6 500～6 000 cal yr B.P.,4 200～3 800 cal yr B.P.and 3 500～2 500 cal yrB.P.关键词
黄河三角洲/全新世/地层层序/沉积相/古气候Key words
the Huanghe (Yellow River) Delta/holocene/sequence stratigraphy/sedimentary facies/paleoclimate分类
天文与地球科学引用本文复制引用
马瑞罡,胥勤勉,褚忠信..黄河三角洲GJ1孔晚第四纪地层层序及全新世沉积单元划分[J].中国海洋大学学报（自然科学版）,2017,47(12):97-109,13.基金项目
国家自然科学基金项目-河流回水对黄河尾闾段决口的影响项目(41376052)资助 （41376052）
Supported by the National Natural Science Foundation of China(41376052)-Effect of Backwater on River Avulsions in the Yellow River Tail （41376052）
