地质通报Issue(5)：691-697,7.
内蒙古阿拉善地区恩格尔乌苏缝合带二叠纪放射虫及其地质意义
Permian radiolarians from the Engeerwusu suture zone in Alxa area of Inner Mon- golia and its geological significance
摘要
Abstract
Details of Permian albaillellarians from the exotic siliceous blocks within the Engeerwusu ophiolitic mélange along the Eng-eerwusu suture zone are presented for the first time. Among them, seven species belonging to three genera were systemically investi-gated. Most species recorded can be correlated with the Permian radiolarian zones in Japan and the USA. Two radiolarian assemblages were distinguished, indicative of Early Permian and late Middle to early Late Permian respectively. On the basis of the deep-water settings indicated by the albaillellarian fauna, the radiolarians extracted from the exotic siliceous blocks within the Engeerwusu ophiol-itic mélange along the Engeerwusu suture zone may provide new evidence for the tectonic evolution of the Engeerwusu suture zone between the North China Plate and the Tarim Plate. According to the deep-water setting indicated by the latest radiolarian assem-blage of late Middle-early Late Permian epoch, the authors hold that an ocean existed between the North China Plate and the Tarim Plate during late Middle to early Late Permian, and the closure of the ocean between the North China Plate and the Tarim Plate might have occurred during late Late Permian period.关键词
二叠纪/晚二叠世/放射虫/蛇绿混杂岩/恩格尔乌苏缝合带/内蒙古Key words
Permian/Late Permian/radiolarians/ophiolitic mélange/Engeerwusu suture zone/Inner Mongolia分类
天文与地球科学引用本文复制引用
谢力,尹海权,周洪瑞,张维杰..内蒙古阿拉善地区恩格尔乌苏缝合带二叠纪放射虫及其地质意义[J].地质通报,2014,(5):691-697,7.基金项目
中国地质调查局项目(编号:基[2010]矿评01-09-11) （编号:基[2010]矿评01-09-11）
