Conglomerates and sandstones from the Yintun Formation in Northern Liaoning Province： Implications for the Huronian Glaciation and reconstruction of the Columbia supercontinent  

作　　者：Liyang Zhang Bei Xu Zhiwen Luo Wen Liao 

机构地区：[1]Key Laboratory of Orogenic Belts and Crustal Evolution, Ministry of Education, School of Earth and Space Sciences Peking University, Beijing 100871, China

出　　处：《Science Bulletin》2016年第17期1384-1390,共7页科学通报（英文版）

基　　金：funded by the National Key Basic Research Program of China(2013CB429806)

摘　　要：New U-Pb zircon geochronology data suggest that the Yintun Formation is younger man ~ 1895 Ma and is late Paleoproterozoic.The Yintun Formation may represent the first sedimentary cover of the North China Craton(NCC)based on its stratigraphic sequence and the ages of its sediments.Gravels in the conglomerates from the lower member of the Yintun Formation are characterized by obvious glacial origins.It is possible that these glacial gravels are the re-deposited sedimentary products of the Huronian Glaciation from the Indian continent.This can also provide sedimentary evidence for the relative location of the Indian continent and the NCC in the reconstruction of the Columbia supercontinent.New U-Pb zircon geochronology data suggest that the Yintun Formation is younger than -1895 Ma and is late Paleoproterozoic. The Yintun Formation may represent the first sedimentary cover of the North China Craton （NCC） based on its stratigraphic sequence and the ages of its sedi- ments. Gravels in the conglomerates from the lower member of the Yintun Formation are characterized by obvious glacial origins. It is possible that these glacial gravels are the re-de- posited sedimentary products of the Huronian Glaciation from the Indian continent. This can also provide sedimentary evi- dence for the relative location of the Indian continent and the NCC in the reconstruction of the Columbia supercontinent.

关 键 词：Yintun Formation Huronian Glaciation Columbia supercontinent 

分 类 号：P588.2[天文地球—岩石学]