| 河北北部下寒武统馒头组沉积环境及找矿意义 |
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| 引用本文： | 石立国,彭树华.河北北部下寒武统馒头组沉积环境及找矿意义[J].吉林地质,2014(1):8-10. |
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| 作者姓名： | 石立国 彭树华 |
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| 作者单位： | 阜新市国土资源局;中国地质调查局天津地质调查中心; |
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| 摘 要： | 冀北下寒武统馒头组底部有一套层位稳定的紫红色、灰黄色白云质砾岩和页岩。砾石具棱角状或次棱角状,粒度分选差,砾石成分与填隙物成分相同,主要为白云岩。根据对该层位岩石组成、沉积特征的分析,其成因与砾岩(碳酸盐岩)中盐类物质经次生变化形成溶塌角砾岩相关。由于该层位稳定,含盐类物质较高,因此在一定层位有可能找到石膏矿。
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| 关 键 词： | 下寒武统 馒头组 页岩 溶塌角砾岩 |
Sedimentary environment and prospecting signiifcance of the Mantou Formation,Lower Cambrian in Northern Hebei Province |
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| Institution: | SHI Li-guo, PENG Shu-hua (1. Fuxin Bureau of Land and Resources, Fuxin123000, Liaoning, China; 2. Tianjin Center of Geological Surveys, China Geological Survey, Tianjin300170, China) |
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| Abstract: | A set of purple and grayish yellow dolomitic conglomerate and shale is stably distributed in the Mantou Formation, Lower Cambrian in Norhern Hebei Provinces. The gravels are angular or subangular, sorted badly, and gravel is mainly composed of dolomite, which same with interstitial materials. Based on analysis of composition of rocks and sedimentary features in the horizon, the authors think that causes related to salt substances in conglomerate （carbonate） formed karst collapse breccia by secondary changes. Because of the horizon is stable and contains high concentration salts, so it is mostly probable to ifnd gypsum mine in some horizon. |
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| Keywords: | Lower Cambrian Mantou Formation shale karst collapse breccia |
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