摘要
根据岩性、沉积构造和痕迹化石的组成和产状特征 ,该文简要论述了豫西济源中生代盆地晚三叠世河流环境中五种沉积类型和痕迹组构特征 ,划分了五大发展阶段 ,并由此说明了该河流沉积环境的演化历史 。
According to the character of lithology and sedimentary structure as well as composition and occurrence of trace fossils, this paper briefly discusses five deposit types of fluvial environment and ichnofabric feature from the Upper Triassic Epoch of Jiyuan Mesozoic basin, western Henan, China, and divides this sequences into five large development stages, and hence explains the evolution history of the fluvial sedimentary environment. In ichnologic respect, this paper also point out the different composition of trace fossils in fluvial sedimentary environment between the worm wet and arid weather condition.
出处
《河南地质》
2000年第3期176-180,共5页
Henan Geology
关键词
河流沉积
痕迹组构
痕迹化石
上三叠统
济源
fluvial deposit
ichnofabric
trace fossils
Upper Triassic
Jiyuan
