地质通报2018，Vol.37Issue(1)：51-62,12.
内蒙古阿拉善北部好比如地区下石炭统好比如组时代修订及其地质意义
Chronology of the Haobiru Formation in the Haobiru area of northern Alxa, Inner Mongolia and its geological implications
摘要
Abstract
Due to the low level of stratigraphic study of the Haobiru area in northern Alxa,Inner Mongolia,the age of the Haobiru Formation is controversial, and this limits the further discussion on the sequence stratigraphy, sedimentary construction and tectonic evolution.The authors revealed that the LA-ICP-MS zircon U-Pb age of the Early Carboniferous Haobiru Formation from the Haobiru area is 270.3±2.2Ma,and the youngest peak age of detrital zircons is 279Ma,and hence the age should be reassigned to Early Permian Kungurian-Middle Permian Roadian. According to the regional lithological characteristics, stratigraphic contrast and com-parison of zircon age spectra,the Haobiru Formation should be reassigned to Lower-Middle Permian Maihanhada Formation(P1-2m)-Middle Permian Aqide Formation(P2a).The age revision of the Haobiru Formation provides new evidence for the discussion on the Late Paleozoic sequence stratigraphy,sedimentary construction and tectonic evolution.关键词
阿拉善北部/下石炭统/好比如组/时代修订/地层层序Key words
Northern Alxa/Lower Carboniferous/Haobiru Formation/age revision/chronologic stratigraphic sequence分类
天文与地球科学引用本文复制引用
张宇轩,牛亚卓,魏建设,史冀忠,宋博..内蒙古阿拉善北部好比如地区下石炭统好比如组时代修订及其地质意义[J].地质通报,2018,37(1):51-62,12.基金项目
中国地质调查局项目《银额盆地及周缘油气基础地质调查》(编号:DD20160172)、《银额盆地上古生界油气战略选区调查》(编号:DD20160200)和国家自然科学基金项目《甘蒙北山黑鹰山地区晚石炭世沉积盆地性质分析》(批准号:41402097)、《北山地区石炭纪和二叠纪古地磁研究及其构造意义》(批准号:41402195) （编号:DD20160172）
