摘要
应用层序地层学的原理和方法 ,对扬子地台西缘陕西宁强—四川广元地区的志留系剖面进行了重新研究 ,识别出 9个三级层序。三级层序均发育TST和HST ,而缺乏LST和SMST。通过区内沉积层序的对比 ,建立了扬子西缘志留纪层序地层格架。最后探讨了该区志留纪的海平面变化规律。
This paper applies the principle and method of sequence stratigraphy to restudy on Silurian profile between Ningqiang,Shanxi and Guangyuan,Sichuan in the western margin of the Yangtze plaform,recognizing 9 thir dorder sequences with the development of TST and HST other than LST and SMST On the basis of regional sedimentary sequence correlation,silurian sequence stratigraphic framework is established Sea level change in Silurian in this region is discussed
出处
《四川地质学报》
2000年第3期171-175,共5页
Acta Geologica Sichuan
关键词
层序地层
志留纪
层序对比
扬子地台西缘
Sequence stratigraphy,Silurian,sequence correlation,western margin of the Yangtze platform
