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Arenicolites isp., Beaconites coronus, Cylindricum isp., Palaeophycus heberti, Palaeophycus tubularis, Planolites isp., Psilonichnus 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。
Abstract:
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 ichnofabrics are recognized: 1) Scoyenia ichnofabric, which represents shore lacustrine depositional environment under arid climate; 2) PlanolitesTaenidium ichnofabric, which formed in a shallow lacustrine sedimentary environment, and the substrate did not expose to the surface; 3) Psilonichnus ichnofabric, which generated in a lacustrine delta sedimentary environment and shows the hydrodynamic becoming more and more strongly in sequence.
点击查看大图
下载:
