摘要
洛阳龙门地区出露连续的寒武系第三统张夏组碳酸盐岩,层内发育大量的风暴沉积构造,是研究碳酸盐岩风暴沉积的良好剖面。研究区发育了6种典型的风暴相关沉积构造,根据风暴岩的沉积序列,识别出5种风暴沉积岩;研究了该区风暴沉积中遗迹化石,依据遗迹化石的分布特征以及镜下特征,划分出了3个风暴沉积序列层段,识别出6个遗迹属,建立了研究区遗迹化石的风暴沉积分布模式图,得出了研究区沉积环境演化规律。
There are very successive outcrops of Zhangxia Formation carbonates of the 3rd Epoch of Cambrian in Longmen,Luoyang of Henan Province,where a mass of storm deposits are well developed with ideal sections for the study of storm deposit in carbonates.This paper studies in detail six kinds of typical sedimentary structures in storm deposits and divides the storm deposit rock into five kinds of sequences so as to provide typical marks to rebuild its palaeoenvironment.According to the detailed observations and research on the trace fossils,the storm deposits are divided into three sequences with six trace fossils recognized.On the basis of above,the paper summarizes the distribution mode of trace fossils in storm deposits and analyses the change law of sedimentary environments.
出处
《地质科技情报》
CAS
CSCD
北大核心
2015年第6期92-99,共8页
Geological Science and Technology Information
基金
国家自然科学基金项目(41202071)
中国石油大学(北京)油气资源与探测国家重点实验室开放课题(PRP/open-1207)
高校博士点基金博导类联合课题(20114116110001)
关键词
寒武系
张夏组
碳酸盐岩
风暴沉积
遗迹化石
Cambrian
Zhangxia Formation
carbonate
storm deposit
trace fossil
