| 广西晚二叠世合山组中沉积间断的发现及其地质意义 |
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| 引用本文： | 黄凤鸣,王根发.广西晚二叠世合山组中沉积间断的发现及其地质意义[J].地质科技情报,1994,13(2):47-52. |
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| 作者姓名： | 黄凤鸣 王根发 |
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| 作者单位： | Huang Fengming; Huang Naihe;Wang Gengfa;Tao Jiwen;(China University of Geosciences，Wuhan)Wen Xianduan(China University of Geosciences，Beijing，10083) |
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| 摘 要： | 首次提出在晚二叠世合山组碳酸盐岩含煤岩系发育过程中存在沉积间断，并在其中鉴别出众多的沉积断标志：①灰岩的角砾化现象；②淡水作用下的重结粗大方解石颗粒；③古裂隙；④古溶洞；⑤氧化壳；⑥砾石层；⑦层状晶洞。这些沉积间断标志通常分布在煤层的间接底板楔部或上部。在合山组形成过程中，至少发生了３次沉积间断：４煤形成前，４煤形成期间及２煤形成前。
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| 关 键 词： | 沉积间断 晚二叠世 合山组 煤田 |
DISCOVERY AND SIGNIFICANCE OF DISCONTINUOUS SEDIMENTARY BEDS IN UPPER PERMIAN HESHAN FORMATIN,GUANGXI PROVINCE |
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| Huang Fengming, Huang Naihe,Wang Gengfa,Tao Jiwen,.DISCOVERY AND SIGNIFICANCE OF DISCONTINUOUS SEDIMENTARY BEDS IN UPPER PERMIAN HESHAN FORMATIN,GUANGXI PROVINCE[J].Geological Science and Technology Information,1994,13(2):47-52. |
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| Authors: | Huang Fengming Huang Naihe Wang Gengfa Tao Jiwen |
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| Abstract: | A number of discontinuous sedimentary indexes have been proposed for the first time in the Upper Permian Heshan Formation as follows:(1)brecciated limestones,(2)coarse recrystallization calcite formed by freshwater diagenesis,(3)paleocracks,(4)paleokarst,(5)oxidized crust,(6)conglomerate beds and(7)bedded caves.These indexes are found in the top and in the upper coal seat.At least three discontinuous sedimentations have occurred during the sedimentary process of the Upper Permian Heshan Formation. |
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| Keywords: | discontinuous sedimentary index discontinuous sedimentation Late Permian Heshan Formation Heshan coal-field |
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