南四湖周边地区第四纪地层划分的初步研究

Primary Study on Quaternary Strata Division in Surrounding Areas of Nansihu Lake

摘要:

依据南四湖周边地区数十眼钻孔的数据资料,以岩性地层分析对比研究为基础,通过利用14C、热释光等年代测定和孢粉分析技术方法,对该地区第四纪地层的划分提出了初步认识。经研究认为,该区中南部的南四湖、北五湖的湖相沉积大约形成于全新世中晚期之后。根据区内松散岩层的沉积物岩性和岩层的组合特征可以划分出5个岩组段。

Abstract:

Based on datas gained from samples of 10 drillings surrounding Nansihu Lake area and contrast analysis of strata property,by using technical methods of 14C,TL etcetera and sporopollen analysis,primary suggestion for dividing Quaternary strata are put forward in this paper.As proved by the study,lacustrine sedimentation of Nansihu and Beiwuhu in middle and south part were formed in late period of Holecene.According to sedimentary property and strata combination characteristics of loose bed,this area can be d...