| 摘要: |
| 本文主要研究了山西北部晚古生代煤系高岭岩的岩石、矿物、地球化学特征,确定了高岭岩的主要富集层位:(1)本溪组底部铝土质高岭岩;(2)太原组煤夹矸高岭岩;(3)山西组煤夹矸高岭岩。从而得到研究区高岭岩源岩一为风化壳化学风化作用产物,一为火山碎屑沉积物的结论。进而分析了不同层位、不同源岩高岭岩的成因模式:正常沉积高岭岩成因模式和火山碎屑成岩转化成因模式。 |
| 关键词: 煤系高岭岩 源岩 成因模式 |
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| GENETIC MODELS OF THE KAOLIN ROCKS IN THE LATE PALAEOZOIC COAL MEASURES IN NORTHERN SHANXI |
| Zhu Rukai, Zhang Yundong |
(1 Research Institute of Petroleum Exploration and Development, China National Oil and Gas Corporation;
2 China University of Geosciences, Beijing) |
| Abstract: |
| In the present paper,the stress is laid on the genesis and regional distribution of the kaolin rocks in the coal measures in northern Shanxi.According to petrographic,miner-alogical and geochemical characteristics,the main enrichment horizons of the kaolin rocks are identified in the Late Palaeozoic coal measures in the study area.They are(1)bauxitic kaolin rocks in the basal part of the Benxi Formation,(2)tonstein in the Taiyuan Forma-tion,and(3)tonstein in the Shanxi Formation.The source rocks of the kaolin rocks may consist of the weathering products or the volcanoclastic sediments.Finally,two genetic models for normally deposited kaolin rocks and for the diagenetic changes of the volcan-oclastic sediments are thus proposed. |
| Key words: kaolin rock source rock genetic model |
