中国地质调查局:湖北省雾渡河幅(H49E006013)1∶50000地质图数据库

湖北省1:5万雾渡河幅(H49E006013)地质图数据库是按照《区域地质调查技术要求(1∶50 000)》(DD 2006–XX) 和地质行业的统一标准及要求，在充分利用已有资料的基础上， 采用数字填图系统(DGSS) 进行野外地质填图及数据库建设，通过野外调查最终绘制成图。通过地质填图和调研，建立完善了调查区多重地层划分与对比系统，将黄陵北缘埃迪卡拉系陡山沱组划分为四个岩性段，并在第二段发现大型具刺疑源类化石；解体了元古代地层原黄凉河岩组；确立古太古代3.3Ga的TTG片麻岩地质实体—林老爷河片麻岩；确认野马洞岩组属太古代早期绿岩带的残留；重新厘定了黄陵穹窿南部新元古代岩浆岩的岩浆演化序列，认为其具活动大陆边缘火成岩组合特征；将区内的地质构造演化划分为三个阶段，识别出五个变形期次的构造运动；简要总结了区内的矿产资源、灾害与旅游地质特征。图幅充分反映了1:50000区域地质调查基础性成果，对扬子陆核黄陵地区早前寒武纪地质构造演化研究具有重要意义。The 1:50000 geological map database of Wuduhe sheet (H49E006013) in Hubei Province was constructed in accordance with the *Technical Requirements for Regional Geological Survey (1∶50 000)* (DD 2006–XX) and unified standards and requirements of the geological industry. Based on full utilization of existing data, field geological mapping and database construction were carried out using the Digital Geological Survey System (DGSS), and the final map was compiled through field investigations. Through geological mapping and research, a comprehensive multiple stratigraphic division and correlation system for the survey area was established. The Ediacaran Doushantuo Formation in the northern Huangling uplift was divided into four lithologic members, and large acanthomorphic acritarch fossils were discovered in the second member. The original Huanglianghe Formation of the Proterozoic strata was disintegrated. The 3.3 Ga TTG gneiss geological body of the Paleoarchean, namely the Linlaoyehe Gneiss, was established. The Yemadong Formation was confirmed to be the remnant of the early Archean greenstone belt. The magmatic evolution sequence of Neoproterozoic magmatic rocks in the southern Huangling dome was redefined, and these rocks were considered to have the characteristics of active continental margin igneous rock assemblages. The geological tectonic evolution of the area was divided into three stages, and tectonic movements of five deformation phases were identified. The mineral resources, geological hazards and tourism geological characteristics of the area were briefly summarized. This map sheet fully reflects the basic achievements of the 1:50000 regional geological survey, and is of great significance for the study of the Early Precambrian geological tectonic evolution in the Huangling area of the Yangtze Craton.