| 贵州省1:5万敬南等三幅区域地质调查新进展 |
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| 作者姓名： | 贺永忠 乔卫涛 张厚松 向坤鹏 贺箫 安亚运 |
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| 作者单位： | 1.贵州省地质调查院,贵阳 550081; 2.贵州大学资源与环境工程学院,贵阳 550025 |
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| 基金项目： | 中国地质调查局“贵州1:5万敬南幅(G48E019012)、巴结幅(G48E019013)、坡脚幅(G48E019014)区域地质调查(编号: 121201010000150008)”和贵州省地质矿产勘查开发局“贵州敬南新发现海生爬行动物化石时代研究(编号: QDKKH[2017]28)”项目联合资助 |
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| 摘 要： | 为了查明黔西南地区的地层、岩石、古生物及卡林型金矿分布等特征,充分应用了数字地质填图新方法和现代地质理论及测试手段,开展1:5万敬南幅、巴结幅、坡脚幅区域地质调查。结果表明: 依据岩石组合、生物组合等特征,厘清和划分了研究区地层填图单元,并新建了18个非正式填图单位; 首次发现右江盆地北西侧早三叠世晚期产于陆棚相区的海生爬行动物(鱼龙)化石; 首次发现中三叠世台缘礁相带海生爬行动物(幻龙)化石; 新发现矿化点11处,其中金矿化点9处、钼矿化点1处、胶磷矿化点1处,共圈出了卡林型金矿的3个找矿远景区和1个找矿靶区。该研究为区内开展相关地质矿产调查和研究提供参考。
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| 关 键 词： | 黔西南地区 地层 海生爬行动物 矿化点 |
| 收稿时间： | 2019-03-11 |
New achievements of 1:50 000 regional geological survey of three sheets including Jingnan in Guizhou Province |
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| Authors: | HE Yongzhong QIAO Weitao ZHANG Housong XIANG Kunpeng HE Xiao AN Yayun |
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| Institution: | 1. Guizhou Geological Survey, Guiyang 550081, China; 2. Gollege of Resources and Environmental Engineering, Guizhou University, Guiyang 550025, China |
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| Abstract: | In order to find out the distribution of strata, rock, paleontology and Carlin-type gold desposits in Southwestern Guizhou Province, the authors developed the 1:50 000 regional geological survey of Jingnan sheet, Bajie sheet and Pojiao sheet using the new methods of digital geological mapping, modern geological theory and test methods. The results show that the strata graphical units were clarified and divided, and that 18 informal mapping units were established according to rock associations as well as animal and plant fossils. Marine reptile fossils--Ichthyosaurid were first found in shelf facies of late Early Triassic at Northwestern Youjiang Basin. Marine reptile fossils--Nothosaurus were also found in platform-edge reefs facies of Middle Triassic. 11 new mineralization occurrences were discovered, including 9 gold mineralization occurrences, 1 molybdenum mineralization occurrence and 1 collophanite mineralization occurrence. This paper also delineated three metallogenic prospective areas and one target area. The research can provide useful information for geological and mineral investigations and researches in this area. |
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| Keywords: | Southwestern Guizhou Province stratigraphy marine reptile mineralization occurrence |
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