豫西济源地区早三叠世和尚沟组湖相遗迹化石及遗迹组构  

Trace Fossils and Ichnofabrics in the Heshanggou Formation of Lacustrine Deposits,Jiyuan Area,Henan Province

作　　者：胡斌[1] 杨文涛[1] 宋慧波[1] 王敏[1] 钟明洋[1] 

机构地区：[1]河南理工大学资源环境学院河南省生物遗迹与成矿过程重点实验室,河南焦作454003

出　　处：《沉积学报》2009年第4期573-582,共10页Acta Sedimentologica Sinica

基　　金：科技部<重大基础研究前期研究专项>(批准号:2005CCA05000);河南省"遗迹化石与地球生物学"高校科技创新团队支持计划项目资助

摘　　要：豫西济源地区早三叠世和尚沟组滨浅湖沉积中动物遗迹化石共鉴定出9个遗迹属10个遗迹种。包括Areni-colites isp.,Beaconites coronus,Cylindricum isp.,Palaeophycus heberti,Palaeophycus tubularis,Planolites isp.,Psilonich-nus isp.,Scoyenia gracilis,Skolithos linearis和Taenidium barretti等。根据遗迹化石分布特征及沉积环境分析,可识别出三种遗迹组构1)Scoyenia遗迹组构,反映了干旱气候条件下的滨湖沉积环境;2)Planolites—Taenidium遗迹组构,属于湖泊水体逐渐变浅的浅湖沉积环境;3)Psilonichnus遗迹组构,代表了水动力由弱到强的湖泊三角洲沉积环境。The trace fossils in the Heshanggou Formation consist of at least 9 ichnogenus and 10 ichnospecies, namely, Arenicolites isp. , Beaconites coronus, Cylindricum isp. , Palaeophycus heberti, Palaeophycus tubularis, Planolites, isp. , Psilonichnus isp. , Scoyenia gracilis, Skolithos linearis and Taenidium barretti. Based on the distribution of trace fossils and analysis of palaeoenvironment, three iehnofabries are recognized： 1 ） Scoyenia iehnofabrie, which represents shore lacustrine depositional environment under arid climate; 2 ） Planolites-Taenidium iehnofabrie, which formed in a shallow lacustrine sedimentary environment, and the substrate did not expose to the surface; 3 ） Psilonichnus ichnofabrie, which generated in a lacustrine delta sedimentary environment and shows the hydrodynamic becoming more and more strongly in sequence.

关 键 词：济源 三叠纪 湖泊沉积环境 遗迹化石 和尚沟组 

分 类 号：Q911.28[天文地球—古生物学与地层学]