| 沈红钱,张遂,谢小峰,袁良军,杨炳南,朱璞,谢兴友,郑超,张平壹,张仁彪,姚希财.黔渝毗邻区杨家湾-老木湾南华纪含锰地堑特征与找矿预测[J].贵州地质,2021,38(1):1-7 |
| 黔渝毗邻区杨家湾-老木湾南华纪含锰地堑特征与找矿预测 |
| Characteristics and Prospecting Prediction of Nanhuan Manganese-bearing Graben in Yangjiawan-Laomuwan Adjacent Area of Guizhou and Chongqing |
| 投稿时间：2020-03-20 |
| DOI： |
| 中文关键词: 黔东 南华纪 含锰地堑 找矿预测 |
| 英文关键词:Eastern Guizhou Nanhua Period Manganese-bearing graben Prospecting prediction |
| 基金项目:黔科合平台人才[2018]5618、黔科合支撑[2019]2868、黔科合平台人才[2020]6019、黔地矿科合〔2020〕1号、中地调研合同[2020]第284号、黔地矿科合[2020]03号、黔地矿科合〔2019〕2号、黔地矿科合〔2019〕06号联合资助。 |
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| 中文摘要: |
| 黔渝毗邻区杨家湾-老木湾南华纪含锰地堑系南华裂谷盆地(I级)中的武陵次级裂谷盆地(Ⅱ级)、松桃—古丈次级地堑盆地(III级)中的众多Ⅳ级含锰地堑之一。运用锰矿裂谷气液流体喷溢沉积成矿理论与找矿预测模型，对该含锰地堑中的含锰岩系、锰矿体厚度等变化规律进行综合研究，圈定了杨家湾-老木湾IV级含锰地堑的空间分布范围。含锰地堑长轴沿北东70°左右方向展布，长大于10 km，宽34 km。由于后期地质作用，该含锰地堑大部分已被剥蚀掉，仅含锰地堑的中部、南部和南西部残存小部分。预测在贵州境内含锰地堑南部的石宝坪一带、含锰地堑南西部的沙湾河一带及重庆市秀山县境内含锰地堑中部的老木湾一带，具有较好的找矿潜力，可望找到2-3个中小型锰矿床。 |
| 英文摘要: |
| Yangjiawan-Laomuwan Manganese-formation Basin is one of the IV-level basins of the Songtao-Guzhang Basin (III level), Wuling Basin (II level) in Cryogenian Nanhua Rift Basin (I level). We comprehensively studied the variations of the manganese-containing rock series and the thickness of the manganese ore-body in the Yangjiawan-Laomuwan Basin, and defined its spatial distribution. The long axis of the IV-level basin is distributed along the northeast direction of about 70° with the length of ＞ 10 km and the width of 34 km. Most of the basin has been denuded, with a little residue in the central, southern and south-western parts because of the late geological processes. We predict that there is good prospecting potential in Shibaoping area located in the south of the IV-level basin, Shahewan area located in the southwest of the basin, Guizhou Province and Laomuwan area located in the central part of the basin, Chongqing City, and 2-3 small-medium manganese deposits can be found. |
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