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摘要:
河南省三川幅(I49E013014)1∶50 000地质图数据库的数据源采用实测和数字填图方法获得,野外数据采集过程中实施构造–岩性填图,注重特殊地质体及非正式填图单位的表达,共采集薄片66件,全岩岩石化学样品180件,同位素测年样品19件,化学分析样品21件。图幅主要成果有:在陶湾群层型剖面上发现多门类、时限短的微体化石,确定陶湾群为奥陶纪;在陶湾群发现碱性火山岩夹层,指示奥陶纪在华北板块南缘发育伸展性盆地;确定宽坪岩群四岔口岩组、谢湾岩组内的绿片岩为板内火山岩,指示宽坪岩群主体形成于伸展性盆地;在图幅区南部填绘出志留纪碱长花岗斑岩岩墙群,限定了秦岭洋关闭的时代不晚于志留纪;将晚中生代侵入岩划分为5个侵入期次;厘定了栾川断裂带存在早古生代、早中生代、晚中生代3期活动;在区内新发现震旦纪冰积物。该数据库的数据内容分为基本要素类、综合要素类和对象类,数据量约为63.5 MB,充分反映了本图幅区的地质矿产成果资料,对该区矿产勘查与开发、地质灾害防治、秦岭造山带研究与地质科普等提供基础数据支撑。
Abstract:The 1∶50 000 Geologic Map Database of Sanchuan Map-sheet (I49E013014), Henan Province (also referred to as the Database) was established using data obtained through practical measurement and digital mapping. The structural and lithologic mapping was conducted during field data acquisition, focusing on the presentation of special geological blocks and informal mapping units. The samples collected in the field included 66 samples for microscopic petrography identification, 180 samples for whole-rock petrochemical analysis, 19 samples for isotopic dating, and 21 samples for chemical analysis in total. In this study, the main achievements obtained in this map-sheet are as follows. The Taowan Group was found to have occurred during the Ordovician according to multiple taxonomic classifications and short age ranges found in its stratotype section. Alkaline volcanic intercalations were found in the Taowan Group, indicating that an extensional basin developed on the southern margin of the North China Plate in the Ordovician. The greenschists in the Sichakou Formation and Xiewan Formation of the Kuanping Group were determined to be intraplate volcanic rocks, indicating that the main part of the Kuanping Group was formed in an extensional basin. The dike swarms of Silurian alkali-feldspar granite porphyry were found in the southern part of the map-sheet by mapping, restricting the closure era of the Qinling Ocean to a time not later than the Silurian. The intrusions of the late Mesozoic were divided into five intrusive stages. The Luanchuan fault zone was determined to have undergone three stages of activities in the early Paleozoic, early Mesozoic, and late Mesozoic. Furthermore, Sinian glacial sediments were newly discovered in the map-sheet. The Database consists of data on feature classes, complex classes, and object classes, with a data size of about 63.5 MB. It fully reflects the geological and mineral achievements of the map-sheet, and will provide basic data for mineral exploration and exploitation and prevention and control of geological hazards in the map-sheet, research on the Qinling Orogenic Belt, and the popularization of geoscience.
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Key words:
- database /
- geological map /
- 1∶50 000 /
- Sanchuan map-sheet /
- Henan Province /
- Qinling Orogenic Belt /
- geological survey engineering
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表 1 数据库(集)元数据简介
条目 描述 数据库(集)名称 河南省三川幅1∶50 000地质图数据库 数据库(集)作者 构造类:任建德,李春艳,翟文建,河南省地质调查院
沉积岩类:吕际根,李莹琪,焦静华,河南省地质调查院
火山岩类:张毅星,贺承广,孙学静,河南省地质调查院
侵入岩类:晁红丽,王小娟,李 敏,河南省地质调查院
变质岩类:谢朝永,李瑞强,刘姗姗,河南省地质调查院数据时间范围 2016—2018年 地理区域 地理坐标:东经 111°15′~111°30′,北纬 33°50′~34°00′ 数据格式 MapGIS 数据量 63.5 MB 数据服务系统网址 http://dcc.cgs.gov.cn 基金项目 中国地质调查局地质调查项目“中条—熊耳山成矿区地质矿产调查”(项目编号:DD20160043)和“河南省1∶50 000白土街、三川幅区域地质矿产调查”(项目编号:DD20160043-02)联合资助 语种 中文 数据库(集)组成 包括:1∶50 000地质图库和图饰。地质图库包括沉积岩、火山岩、侵入岩、变质岩、第四系、脉岩、构造、地质界线、产状、同位素样品及年龄、化石样品、火山口、岩性花纹、地质代号以及地名、道路、河流、水库等;图饰包括接图表、柱状图、侵入岩填图单位划分表、图例、图切剖面、大地构造位置图、责任表等 表 2 三川幅数据基础简表
序号 数据类型 数据内容 资料来源 1 地质调查 1∶200 000栾川幅(I49-XXII)地质报告 河南省地质局秦岭地质队, 1958 2 区域物探 豫西地区1∶100 000航磁测量和航空放射性测量成果报告 地质部物探局902队, 1960 3 区域物探 豫西地区1∶50 000航磁测量成果报告 地质部物探局903队, 1966 4 区域化探 河南省栾川县三川–合峪地区水系沉积物测量研究报告 国家地质总局第二物探大队, 1975 5 地质调查 1∶50 000栾川县南部区域地质调查报告 河南省地质三队, 1977 6 矿产勘查 河南省栾川县三道庄矿区钼钨矿详细勘探地质报告 河南省地质局地调一队, 1980 7 区域物探 豫西南地区1∶200 000区域重力调查报告 河南省物探队, 2000 8 地质调查 1∶250 000内乡县幅区域地质调查报告 河南省地质调查院, 2002 9 矿产调查 河南卢氏地区矿产远景调查 河南省地质调查院, 2009 10 地质调查 豫西关键地区区域地质调查成果报告 中国地质调查局天津地质调查中心, 2015 11 地质调查 中条—熊耳山成矿区关键地区地质调查与成果集成成果报告 中国地质调查局天津地质调查中心, 2019 表 3 晚侏罗世黑云母石英二长岩地质体面实体属性
序号 数据项名称 标注编码 数据类型 内容描述实例 1 标识号 *Feature_Id Character AI49E013014000000535 2 原编码 Source_Id Character 3 类型代码 *Feature_Type Character ηοJ@3 4 名称 Geobody_Name Character 晚侏罗世黑云母石英二长岩 5 时代 Geobody_Era Character J@3 6 下限年龄值(a.B.P) Geobody_Age1 Double 0 7 上限年龄值(a.B.P) Geobody_Age2 Double 0 8 子类型标识 Subtype Interger 1 注:@代表后面数字格式为下标。 表 4 晚侏罗世黑云母石英二长岩侵入岩年代单位属性表
序号 数据项名称 标准编码 数据类型 内容描述实例 1 要素分类(地质代码) *Feature_Type Character ηοJ@3 2 岩体填图单位名称 Intru_Body_Name Character 晚侏罗世黑云母石英二长岩 3 岩体填图单位符号 Intru_Body_Code Character ηοJ@3 4 岩石名称(岩性) Rock_Name Character 黑云母石英二长岩 5 岩石颜色 Color Character 黄褐色 6 岩石结构 Rock_Texture Character 似斑状结构,基质不等粒结构 7 岩石构造 Rock_Structure Character 块状构造 8 岩相 Rock_Phases Character 侵入相 9 与围岩接触关系 Contact_Relation Character 侵入接触 10 主要矿物及含量 Primary_Mineral Character 条纹长石斑晶5%~10%,基质石英7%~12%,角闪石6%~10%,平均8%± 11 次要矿物及含量 Secondary_Mineral Character 黑云母2% 12 与围岩接触面走向 Strike Integer * 13 与围岩接触面倾向 Dip_Direction Integer * 14 与围岩接触面倾角 Dip_Angle Integer * 15 形成时代 Era Character J@3 16 含矿性 Commodities Character * 17 子类型标识 Subtype Integer 0 注:@代表后面数字格式为下标。 表 5 河南省三川幅(I49E013014)地质图空间数据库数据表
数据类型 数据量 数据基本特征 岩石化学分析数据 180件 火山岩、侵入岩的11种主量元素 微量元素分析数据 180件 火山岩、侵入岩的31种微量元素 同位素年龄数据 19件 火山岩、侵入岩、碎屑岩的LA–ICP–MS锆石U–Pb同位素年龄 化石点数量 18个 几丁虫、虫鄂、疑源、苔藓植物孢子 矿点数量 33个 铁矿(10个)、铅矿(10个)、钼矿(5个)、铜矿(3个)、金矿(1个)、锌矿(1个)、锰矿(1个)、石墨矿(1个)、软玉矿(1个) 矿床类型 5种 热液型、矽卡岩型铅锌钼矿,沉积变质型铁矿、石墨矿、软玉矿,风化壳型金矿,沉积型锰矿 泉点数量 15个 矿泉水 Table 1. Metadata Table of Database (Dataset)
Items Description Database (dataset) name 1∶50 000 Geologic Map Database of Sanchuan Map-sheet, Henan Province Database (dataset) authors For structures: Ren Jiande, Li Chunyan, Zhai Wenjian, Henan Institute of Geological Survey
For sedimentary rocks: Lyu Jigen, Li Yingqi, Jiao Jinghua, Henan Institute of Geological Survey
For volcanics: Zhang Yixing, He Chengguang, Sun Xuejing, Henan Institute of Geological Survey
For intrusions: Chao Hongli, Wang Xiaojuan, Li Min, Henan Institute of Geological Survey
For metamorphic rocks: Xie Chaoyong, Li Ruiqiang, Liu Shanshan, Henan Institute of Geological SurveyData acquisition time 2016—2018 Geographical area 111°15′–111°30′ E, 33°50′–34°00′ N Data format MapGIS Data size 63.5 MB Data service system URL http://dcc.cgs.gov.cn Fund project Jointly funded by the projects titled Geological and Mineral Survey of Zhongtiao-Xiongershan Metallogenic Area (No.: DD20160043) and 1∶50 000-scale Regional Geological and Mineral Survey of Baitujie and Sanchuan Map-sheets, Henan Province (No.: DD20160043-02) initiated by the China Geological Survey Language Chinese Database (dataset) composition The Database consists of databases and map decorations of a 1∶50 000 geological map. The databases include data on sedimentary rocks, volcanics, intrusions, metamorphic rocks, the Quaternary, dikes, structures, geological boundaries, attitudes, isotopic samples and ages, fossil samples, craters, lithologic patterns, geological codes and place names, roads, rivers, and reservoirs. The map decorations include an index map, histograms, a division table of intrusion mapping units, legends, transverse cutting profiles, a geotectonic location map, and a duty table. Table 2. Data basis of Sanchuan map-sheet
No. Data type Data content Source 1 Geological survey 1∶200 000-scale geological survey report of Luanchuan map-sheet (I49–XXII) Qinling Geological Team of Henan Bureau of Geo-exploration & Mineral Development, 1958 2 Regional geophysical exploration Result report of 1∶100 000-scale aeromagnetic survey and airborne radioactivity measurement in West Henan Province 902nd Aeromagnetic Team of Geophysical Exploration Bureau under the Ministry of Geology and Mineral Resources, 1960 3 Regional geophysical exploration Survey and research report of 1∶50 000-scale aeromagnetic survey in West Henan Province 903rd Team of Geophysical Exploration Bureau under the Ministry of Geology and Mineral Resources, 1966 4 Regional geochemical exploration Survey and research report of stream sediments in Sanchuan-Heyu area, Luanchuan County, Henan Province 2nd Geophysical Exploration Team of the National Geological General Administration, 1975 5 Geological survey 1∶50 000 regional geological survey report of South Luanchuan County 3rd Geological Survey Team of Henan Bureau of Geo-exploration & Mineral Development, 1977 6 Mineral exploration Detailed exploration geological report of molybdenum-tungsten deposits in Sandaozhuang mining area, Luanchuan County, Henan Province 1st Geological Survey Team of Henan Bureau of Geo-exploration & Mineral Development, 1980 7 Regional geophysical exploration 1∶200 000-scale regional gravity survey report of Southwest Henan Province Geophysical Exploration Team of Henan Bureau of Geo-exploration & Mineral Development, 2000 8 Geological survey 1∶250 000-scale regional geological survey report of Neixiang map-sheet Henan Institute of Geological Survey, 2002 9 Mineral survey Mineral prospect survey of Lushi area, Henan Province Henan Institute of Geological Survey, 2009 10 Geological survey Result report of regional geological survey of key areas of West Henan Province Tianjin Center of China Geological Survey, 2015 11 Geological survey Report of geological survey and result integration of key areas of Zhongtiao Mountain —Xiong’er Mountain metallogenic area Tianjin Center of China Geological Survey, 2019 Table 3. Attributes of geological polygon entities of late Jurassic biotite-quartz monzonites
No. Data item Label code Data type Example of content description 1 ID *Feature_Id Character AI49E013014000000535 2 Original code Source_Id Character 3 Type code *Feature_Type Character ηοJ@3 4 Name Geobody_Name Character Late Jurassic biotite-quartz monzonite 5 Era Geobody_Era Character J@3 6 Minimum age (a.B.P) Geobody_Age1 Double 0 7 Maximum age (a.B.P) Geobody_Age2 Double 0 8 Subtype ID Subtype Interger 1 Note: @ denotes that the following figures are subscripts. Table 4. Attributes of lithochronologic units of the intrusions of the late Jurassic biotite-quartz monzonites
No. Data item Standard code Data type Examples of content description 1 Feature type (geologic code) *Feature_Type Character ηοJ@3 2 Name of rock-mass mapping unit Intru_Body_Name Character Late Jurassic biotite-quartz monzonites 3 Symbol of rock-mass mapping unit Intru_Body_Code Character ηοJ@3 4 Rock name (lithology) Rock_Name Character Biotite-quartz monzonites 5 Rock color Color Character Tan 6 Rock texture Rock_Texture Character Porphyritic texture; matrix: inequigranular texture 7 Rock structure Rock_Structure Character Massive structure 8 Lithofacies Rock_Phases Character Intrusive facies 9 Contact relationship with surrounding rocks Contact_Relation Character Intrusive contact 10 Primary minerals and their content Primary_Mineral Character Perthite phenocryst: 5–10%, matrix quartz: 7–12%, hornblendes: 6–10%, average content: 8%± 11 Secondary minerals and their content Secondary_Mineral Character Biotite: 2% 12 Strike of the interface with surrounding rocks Strike Integer * 13 Dip of the contact surface with surrounding rocks Dip_Direction Integer * 14 Dip angle of the contact surface with surrounding rocks Dip_Angle Integer * 15 Formation era Era Character J@3 16 Ore-bearing features Commodities Character * 17 Subtype ID Subtype Integer 0 Note: @ denotes that the follow-up figures are subscripts. Table 5. Data in the geological map spatial database of Sanchuan map-sheet (I49E013014), Henan Province
Data category Data volume Basic feature Data of petrochemical analysis 180 pieces 11 major elements in volcanics and intrusions Data of trace element analysis 180 pieces 31 trace elements in volcanics and intrusions Data of isotope ages 19 pieces LA–ICP–MS zircon U–Pb ages of volcanics, intrusions, and clastic rocks Quantity of fossil sites 18 sites Chitinozoas, scolecodonts, acritarchs, and bryophyte spores Quantity of mineral occurrence 33 sites Iron deposits (10), plumbum deposits (10), molybdenum deposits (5), copper deposits (3), gold deposits (1), zinc deposits (1), manganese deposits (1), graphite deposits (1), and nephrite deposits (1) Deposit types 5 types Hydrothermal type and skarn type: plumbum-zinc-molybdenum deposits; sedimentary metamorphic type: iron deposits, graphite deposits, and nephrite deposits; weathering crust type: gold deposits; sedimentary type: molybdenum deposits. Quantity of springs 15 Mineral water -
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