中国地质调查局:内蒙古东部双井—必鲁台地区(K50E004017,K50E004018,K50E004019,K50E005017,K50E005018和K50E005019图幅之内)1∶50000区域地质图数据库

内蒙古东部双井-必鲁台地区（K50E004017，K50E004018，K50E004019，K50E005017，K50E005018，K50E005019图幅之内）1:50000区域地质图是按照《1∶50000 区域地质调查技术要求》（DD2019−01）、《侵入岩地质调查与填图方法》、《复杂构造区地质调查与填图方法》以及《混杂岩地质调查与填图方法》等规范要求，以板块构造理论为指导完成的成果图件。在综合分析前人资料、野外踏勘、剖面测制、野外路线调查的基础上，结合室内大量岩矿鉴定以及元素、同位素分析测试，采用数字填图系统（DGSS）进行野外地质填图和数据库建设，该数据库为MapGIS、JPG、PDF和shapefile格式，数据量约为416MB。图幅共划分出12个沉积（火山）地层单位、3个非正式填图单位、14期岩浆事件以及7期构造变形事件，重点突出了古生代-早中生代双井片岩、杏树洼混杂岩、克德河砂砾岩等非正式填图单位，以及侵入岩和构造变形等地质单元的图面表达。该图是对中亚造山带东南部西拉木伦河流域与古亚洲洋闭合过程相关的蛇绿混杂岩、变质杂岩、岩浆岩以及构造变形等地质记录的详细刻画，为揭示西伯利亚古板块和中朝古板块之间的西拉木伦河蛇绿岩带的构造属性，重建中亚造山带东南部洋-陆构造的转换过程提供了详实的基础地质数据。

The 1:50000 regional geological map of the Shuangjing-Bilutai area, eastern Inner Mongolia (within the map sheets K50E004017, K50E004018, K50E004019, K50E005017, K50E005018, K50E005019) was compiled under the guidance of plate tectonic theory, following specifications including Technical Requirements for 1:50000 Regional Geological Survey (DD2019-01), Methods for Geological Survey and Mapping of Intrusive Rocks, Methods for Geological Survey and Mapping in Complex Tectonic Zones, and Methods for Geological Survey and Mapping of Melanges. This map was produced based on comprehensive analysis of prior geological data, field reconnaissance, profile measurement, and field route survey, combined with extensive indoor petrographic and mineralogical identification, as well as elemental and isotopic analysis and testing. Field geological mapping and database construction were carried out using the Digital Geological Mapping System (DGSS). The supporting database is available in MapGIS, JPG, PDF, and shapefile formats, with a total data volume of approximately 416 MB. A total of 12 sedimentary (volcanic) stratigraphic units, 3 informal mapping units, 14 magmatic events, and 7 tectonic deformation events have been delineated in these map sheets. Special emphasis is placed on the cartographic representation of informal mapping units such as the Paleozoic-Early Mesozoic Shuangjing Schist, Xingshuwa Melange, and Kedehe Conglomerate, as well as geological units including intrusive rocks and tectonic deformation. This map provides detailed documentation of geological records including ophiolitic melanges, metamorphic complexes, magmatic rocks, and tectonic deformation in the Xar Moron River basin, southeastern Central Asian Orogenic Belt, which are related to the closure of the Paleo-Asian Ocean. It offers solid basic geological data for revealing the tectonic nature of the Xar Moron River ophiolite belt between the ancient Siberian Plate and ancient North China Plate, and reconstructing the ocean-continent tectonic transition process in the southeastern Central Asian Orogenic Belt.