地质通报2012,Vol.31Issue(10):1554-1564,11.
内蒙古东部及邻区石炭纪—二叠纪构造地层格架与形成环境
Carboniferous-Permian tectonic and stratigraphic framework of eastern Inner Mongolia as well as adjacent areas and its formation environment
摘要
Abstract
Stratigraphic formation and its distribution are controlled by both tectonic background and palaeo-geographical conditions. By adopting several stratigraphic methods, mainly the tectono-stratigraphy method, and combining the study of major sections with the review of data available, this paper has divided eastern Inner Mongolia and its adjacent areas into Carboniferous-Permian strati-graphic regions and established a tectono-stratigraphic framework. The study area is divided into three stratigraphic regions by two tectonic lines. The southern side of the Xilamulun fault, i.e., the Huabei stratigraphic region, is named Kangbao-Chifeng district characterized by outcropped strata of continental margin depressions and an intracontinental rift. The northern side of the Chaganaobao -Arongqi-Heihe line, i.e., the Xing'an stratigraphic region, belongs to the Siberia Plate. The Dongwu-Longjiang district contains strata of continental margin depressions and an intracontinental rift, and strata of the Ergun district show features of continental margin depressions and rifts. Lying between the two lines, the accreted zone can be naturally divided into three stratigraphic districts, namely Xilin Gol district, Horqin district and Song-Liao district, which are characterized by the development of complex environments composed of multi -island oceans, marine troughs and residual troughs. Moreover, through discussing ages and fades of lithologic formations, the tectono-stratigraphic framework can reflect both the tectonic pattern and environment changes.关键词
地层区划/构造地层格架/石炭纪—二叠纪/内蒙古东部Key words
stratigraphic regions/ tectono-stratigraphic framework/ Carboniferous-Permian/ eastern Inner Mongolia分类
天文与地球科学引用本文复制引用
田树刚,李子舜,王峻涛,詹立培,牛绍武..内蒙古东部及邻区石炭纪—二叠纪构造地层格架与形成环境[J].地质通报,2012,31(10):1554-1564,11.基金项目
国家自然科学基金项目《内蒙东部石炭—二叠纪生物礁及其造礁环境》(批准号:41072021)和中国地质调查局项目《内蒙东部二叠纪沉积盆地演化与大地构造属性》(编号:1212011121067)、《乌拉特-赤峰盆地群上古生界油气资源综合调查》(编号:1212011120927) (批准号:41072021)