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摘要:
甘肃省花牛山幅（K46E017023）1：50 000矿产地质图是根据《矿产地质调查技术要求（1：50 000）》和行业的统一标准及要求，在充分利用1：200 000、1：50 000等区域地质调查工作成果资料的基础上，采用数字填图系统进行野外地质专项填图，并应用室内与室外填编图相结合的方法完成的。本图对南华系-震旦系洗肠井群、寒武系西双鹰山组、奥陶系花牛山群的建造类型进行了重新划分，把图幅内侵入岩时代归纳为晚奥陶世—早志留世、泥盆纪、晚三叠世等3期，建立了岩浆岩的演化序列。本数据库包含12个地层单位和3期岩浆岩资料，数据量约为3.77 MB。这些数据充分反映了1：50 000矿产地质调查示范性成果，对该区矿产资源研究、能源勘探等具参考意义。
Abstract:The 1:50 000 mineral geological map of the Huaniushan map-sheet (K46E017023), Gansu province, is developed in accordance with the Technical Specification for Mineral Geological Survey (1:50 000) and unified standards and requirements in the sector, building on making full use of results from and information of 1:200 000 and 1:50 000, etc. regional geological survey, applying the digital mapping system to plot geology-specific maps in the field and adopting the method integrating indoor and outdoor mapping and compilation. In this map, the formation type of the Nanhua-system-Sinian-system Xichangjing Group, Cambrian-system Xishuangyinshan Formation and Ordovician-system Huaniushan Group is reclassified, the periods of intrusive rocks in the map sheet are included in three periods, i.e. late Ordovician epoch-early Silurian epoch, Devonian period and late Triassic epoch, and the evolutionary sequence of magmatite. The database contains data and information of 12 stratigraphic units and magmatite of three periods, with a data size about 3.77 MB. These data fully reflect demonstrative results from the 1:50 000 mineral geological survey, provide a reference to mineral resource research and energy exploration in the area.
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Key words:
- Mineral geological mapping /
- Huaniushan map-sheet /
- 1:50 000 /
- Database /
- Gansu
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图 1 Tectonic structure location of Beishan orogene (A), Tectonic unit division in Beishan (B), and Beishan regional geology (C).
表 1 数据库（集）元数据简表
条 目 描 述 数据库（集）名称 甘肃省花牛山幅1∶50 000矿产地质图数据库 数据库（集）作者 沉积岩类：杜轶伦，中国地质调查局发展研究中心，自然资源部矿产勘查技术指导中心
火山岩类：孙海瑞，中国地质调查局发展研究中心，自然资源部矿产勘查技术指导中心
岩浆岩类：吕 鑫，中国地质调查局发展研究中心，自然资源部矿产勘查技术指导中心
变质岩类：刘凯维，中国地质大学（北京）数据时间范围 2016—2017年 地理区域 经纬度：东经 95°30′~95°45′，北纬 41°10′~41°20′ 数据格式 *.wl, *.wt, *.wp 数据量 16.5 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“整装勘查区找矿预测与技术应用示范”（121201004000172201）资助。 语种 中文 数据库（集）组成 花牛山幅1∶50 000矿产地质图数据库包括：1∶50 000地质图库、角图和整饰。地质图库包括沉积岩、岩浆岩、火山岩、变质岩、第四纪、脉岩、构造、地质界线、产状、矿床（点）、蚀变、岩性花纹、各类代号等。角图包括沉积岩建造、侵入岩建造、变质岩建造、脉岩、构造，图切剖面图、典型矿床（区）平面图、重要勘探线剖面图、地质剖面图及创新性角图，矿产图例、矿产地名录、矿化蚀变图例、成矿区（带）位置图；整饰部分包括接图表、中国地质调查局局徽、图名、比例尺，坐标参数、责任签等。 
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表 2 沉积岩建造一览表
年代地层单位 岩石地层单位 建造单元特征 系 统 群 组 代号 建造类型 厚度（m） 岩性组合 奥陶锡 中-上统 花牛山群 上岩组 O2-3H3 细碎屑岩建造 709 砂岩、变质砂岩 碳酸盐岩建造 120 灰岩、大理岩化灰岩 下岩组 O2-3H1 细碎屑岩建造 367 变质砂岩、粉质板岩 寒武系 中-上统 西双鹰山组 ∈3-4X 细碎屑岩建造 160 变质砂岩 碳酸盐岩建造 150 灰岩 南华系-震旦系 洗肠井组 四岩组 Nh-ZX4 碎屑岩建造 936 粉砂质板岩、千枚状板岩、变质砂岩夹大理岩化灰岩透镜体 三岩组 Nh-ZX3 碎屑岩、碳酸盐岩建造 1 196 砂岩、变质砂岩与灰岩、大理岩化灰岩互层 二岩组 Nh-ZX2 碎屑岩建造 745 变质砂岩、绢云母千枚岩、粉砂质板岩 一岩组 Nh-ZX1 碎屑岩建造 728 变质砂岩、粉砂质板岩夹灰质板岩
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表 3 侵入岩建造一览表
时代 岩石地层单位 建造单元特征 代 纪 世 期 代号 建造类型 岩性特征 同位素年龄 中生代 三叠纪 晚三
叠世ηγT3 二长花岗岩建造 二长花岗岩，岩石呈浅肉红色，细粒花岗结构，局部蠕虫状、斑状或似斑状结构，块状构造。 227 Ma
(锆石U-Pb)（ξγ-ηγ）T3 二长-正花岗岩建造 二长−正长花岗岩，呈肉红色，岩相分带不明显，温度和冷却时间的差异，结构变化明显,常见等粒−不等粒结构、似斑状和斑状结构,块状构造。 228 Ma、
230 Ma
(锆石U-Pb)晚古
生代泥盆纪 晚泥
盆世γδD3 花岗闪长岩建造 花岗闪长岩，岩石呈灰、灰白色，为粗中粒花岗结构，似斑状结构，块状构造。 365 Ma、
367 Ma
(锆石U-Pb)中泥
盆世ΣD 超基性岩建造 橄榄岩，岩石呈暗绿色、黄褐色，具强蛇纹石化，纤纹或鳞片变晶结构。 − 早泥
盆世ξγD1 正长花岗岩建造 正长花岗岩，岩石呈肉红色，中粒花岗结构，块状构造。 415 Ma 早古
生代志留纪 早志
留世ηγS1 二长花岗岩建造 二长花岗岩，岩石呈浅肉红色，中粒花岗结构，块状构造。 440 Ma、
442 Ma
(锆石U-Pb)早古
生代奥陶纪 晚奥
陶世ξγO3 正长花岗岩建造 正长花岗岩，岩石呈肉红色，中粒−中细粒花岗结，块状构造。 453 Ma、
463 Ma
(锆石U-Pb)πγδO3 似斑状花岗闪长岩 似斑状花岗闪长岩−似斑状二长花岗岩，岩石呈灰白色−肉红色,中粗粒似斑状结构，基质花岗结构，块状构造。 458 Ma
(锆石U-Pb)δO3 闪长岩建造 闪长岩−石英闪长岩，岩石呈灰−灰绿色，半自形中粒结构，局部为文象结构，块状构造。 458 Ma
(锆石U-Pb)
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表 1 Metadata Table of Database (Dataset)
Items Description Database(dataset) name 1∶50 000 Mineral Geological Map Database of the Huaniushan Map-sheet, Gansu Database(dataset) authors Sedimentary rocks: Du Yilun, Development and Research Center of China Geological Survey, Mineral Exploration Technical Guidance Center, Ministry of Natural Resources
Volcanic rocks: Sun Hairui, Development and Research Center of China Geological Survey, Mineral Exploration Technical Guidance Center, Ministry of Natural Resources
Magmatite: Lv Xin, Development and Research Center of China Geological Survey, Mineral Exploration Technical Guidance Center, Ministry of Natural Resources
Metamorphic rocks: Liu Kaiwei, China University of Geosciences (Beijing)Data acquisition time 2016—2017 Geographic area Longitude and latitude: East Longitude: 95°30′~95°45′; North Latitude: 41°10′~41°20′ Data format *.wl, *.wt, *.wp Data size 16.5MB Data service system URL http://dcc.cgs.gov.cn Fund project China Geological Survey Project “Demonstration of Prospecting Prediction and Technical Application in Integrated Survey Areas” (121201004000172201) Language Chinese Database(dataset) composition The 1∶50 000 mineral geological map database of Huaniushan map-sheet, Gansu, includes: the 1∶50 000 geological map library, angular maps and graphical representations. The geological map library includes sedimentary rock, magmatite, volcanic rock, metamorphic rock, Quaternary, vein rock, structure, geological boundary, occurrence, deposit (point), alteration, lithological pattern and various codes, etc. The angular maps include: sedimentary rock formation, intrusive rock formation, vein rock, structure, secant profile, typical deposit plan diagram, important exploration route profile map, geological profile map and innovative angular maps, deposit legend, deposit location directory, mineralized alteration legends, and metallogenic zone location map. Graphical representations include map set, CGS logo, map name, scale, coordinate parameters and responsible signature, etc.
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表 2 Sedimentary rock formation list
chrono-stratigraphic unit Litho-stratigraphic unit Feature of formation unit System Series Group Formation code Formation
typeThickness (m) Lithological combination Ordovician Mid-upper Huaniushan Upper formation complex O2-3H3 Fine clasolite 709 Sandstone and metamorphic sandstone Carbonatite 120 Limestone and marbleized limestone Lower formation complex O2-3H1 Fine clasolite 367 Metamorphic sandstone and silty slate Cambrian Mid-upper Xishuangyingshan ∈3-4X Fine clasolite 160 Metamorphic sandstone Carbonatite 150 Limestone Nanhua– Sinian Xichangjing Formation complex #4 Nh-ZX4 Clasolite 936 Silty slate, phyllitic slate and metamorphic sandstone interbedded with marbleized limestone lenticles Formation complex #3 Nh-ZX3 Clasolite and Carbonatite 1 196 Sandstone, metamorphic sandstone, and interbedding of limestone and marbleized limestone Formation complex #2 Nh-ZX2 Clasolite 745 Metamorphic sandstone, sericite phyllite and silty slate Formation complex #1 Nh-ZX1 Clasolite 728 Metamorphic sandstone, and silty slate interbedded with lime slate
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表 3 Intrusive rock formation list
Times Litho-stratigraphic unit Feature of formation unit Era Period Epoch Age code Formation
typeLithological
FeaturesIsotope age Mesozoic Triassic Later Triassic ηγT3 monzonitic granite Monzonitic granite, light pink, fine-grained granitic texture, locally worm-like, porphyritic or porphyritic-like texture, massive structure. 227 Ma (Zircon
U-Pb)(ξγ-ηγ)T3 monzonitic - syenogranite monzonitic - syenogranite, pink, no obvious lithofacies zonation, obvious in temperature, cooling time and texture change, common equigranular - Inequigranular texture, porphyritic and por[hyritic-like texture, massive structure. 228 Ma and 230 Ma (Zircon
U-Pb)Late Paleozoic Devonian Late Devonian γδD3 Granodiorite Granidiorite, gray and off-white, medium~coarse-grain granitic texture, porphyritic-like texture, massive structure. 365 Ma and 367 Ma (Zircon
U-Pb)Mid- Devonian ΣD Ultra-basic rock Olivinite, dark-green, yellowish-brown, strong serpentinization, fibriform or scaly crystalloblastic texture. Early Devonian ξγD1 syenogranite syenogranite, pink, medium-grained granitic texture, massive structure. 415 Ma Early Paleozoic Silurian Early Silurian ηγS1 monzonitic granite Monozonitic granite, light pink, medium-grained granitic texture, massive structure. 440 Ma、442 Ma (Zircon
U-Pb)Ordovician Late Ordovician ξγO3 syenogranite syenogranite, pink, medium-grained ~ medium-fine-grained granitic texture, massive structure. 453 Ma and 463 Ma (Zircon
U-Pb)πγδO3 Porphyritic-like granodiorite Porphyritic-like granodiorite ~ porphyritic-like monzonitic granite, off-white ~ pink, medium-coarse-grained porphyritic-like texture, granitic texture for matrix, massive structure. 458 Ma (Zircon
U-Pb)δO3 Diorite Diorite ~ quartz diorite, gray ~ grayish green, subhedral medium-grained texture, graphic texture locally, massive structure. 458 Ma (Zircon
U-Pb)
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