摘要
江苏早第三纪地层 ,大部分隐埋于地下 ,对其研究 ,只能依据大量钻孔资料 ,分歧意见较多。通过对直溪桥盆地钻孔中系统孢粉资料的全面分析对比 ,来确定该地区的地层层序及时代归属 。
Paleogene strata in South Jiangsu are mostly buried under thick overcast. Being lack of perfect outcrops, the strata can only be investigated by a vast of drilling hole data. Then, there exist many different statements about the strata. The thickness of well developed Paleogene monorhythmite is over 2 092m in Zhixiqiao basin. Associated volcanic activities, different detrital rocks constitute Taizhou, Funing Formations from early, middle and late Paleocene. During Eocene and Oligocene, developed ribbon sediments and reddish detrital rocks respectively,the thickness of strata were decreased gradually from the center of the basin to the margin. Through the comprehensive analysis of sporopollen data in the drilling hole of Zhixiqiao basin, the stratigraphic sequence and time classification of the strata are determined to clarify the paleoclimate and paleoenvironment during Paleogene System.
出处
《江苏地质》
1999年第4期216-220,共5页
Jiangsu Geology
关键词
孢粉组合
早第三纪
古气候
直溪桥盆地
地层
Sporopollen composition
Paleogene System
Paleoclimate
Zhixiqiao basin
South Jiangsu
