Genesis of green sandstone/mudstone from Middle Jurassic Zhiluo Formation in the Dongsheng Uranium Orefield, Ordos Basin and its enlightenment for uranium mineralization
ABSTRACT: The middle Jurassic Zhiluo Formation in the Dongsheng is comprised of a big set of green sandstone/mudstone with most of uranium orebodies occurring in close proximity to its footwall. By synthesizing field observations, region analysis, data collected from previous coal and uranium boreho...
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KeAi Communications Co., Ltd.
2020-03-01
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| Series: | China Geology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2096519220300264 |
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| author | Ruo-shi Jin Xiao-xi Feng Xue-ming Teng Feng-jun Nie Hai-yang Cao Hui-qun Hou Hong-xu Liu Pei-sen Miao Hua-lei Zhao Lu-lu Chen Qiang Zhu Xiao-xi Zhou |
| author_facet | Ruo-shi Jin Xiao-xi Feng Xue-ming Teng Feng-jun Nie Hai-yang Cao Hui-qun Hou Hong-xu Liu Pei-sen Miao Hua-lei Zhao Lu-lu Chen Qiang Zhu Xiao-xi Zhou |
| author_sort | Ruo-shi Jin |
| collection | DOAJ |
| description | ABSTRACT: The middle Jurassic Zhiluo Formation in the Dongsheng is comprised of a big set of green sandstone/mudstone with most of uranium orebodies occurring in close proximity to its footwall. By synthesizing field observations, region analysis, data collected from previous coal and uranium borehole, a regional north-south geological profile across the entire orefield is conducted. Experiments on sandstone/mudstone including rock mineral identification, clastic micromorphology and element geochemistry were carried out. Information from the geological profile indicates that green sandstone/mudstone is widely present in a stable horizon with clear boundaries to the country rock. Microscopic observations and geochemical data on sandstone/mudstone exhibit similar mineral composition with almost identical slightly flat, minor Eu enriched, Ce depleted chondrite-normalized REE patterns. Furthermore, the green clay membrane of the clasts has a complex composition containing chlorite/smectite, green smectite, chlorite, and green kaolinite, with elements including Fe, Mg, Si, and Al. These above results indicate that the green sandstone/mudstone underwent resemble sedimentary diagenetic processes as the country rock without transformation by large-scale regional fluid, while the existence of Fe2+-rich membrane is the main factor to the green sandstone/mudstone. Further concentration of the pre-enrichment uranium during diagenetic process led to the final formation for uranium deposits. The above studies are conducive to enrich the metallogenic mechanism of sandstone type uranium deposits and could provide certain reference for uranium exploration and deployment. |
| first_indexed | 2024-04-10T16:58:49Z |
| format | Article |
| id | doaj.art-b83f6883480e41849a1f0ebfabae0d50 |
| institution | Directory Open Access Journal |
| issn | 2096-5192 |
| language | English |
| last_indexed | 2024-04-10T16:58:49Z |
| publishDate | 2020-03-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | China Geology |
| spelling | doaj.art-b83f6883480e41849a1f0ebfabae0d502023-02-07T04:22:06ZengKeAi Communications Co., Ltd.China Geology2096-51922020-03-01315266Genesis of green sandstone/mudstone from Middle Jurassic Zhiluo Formation in the Dongsheng Uranium Orefield, Ordos Basin and its enlightenment for uranium mineralizationRuo-shi Jin0Xiao-xi Feng1Xue-ming Teng2Feng-jun Nie3Hai-yang Cao4Hui-qun Hou5Hong-xu Liu6Pei-sen Miao7Hua-lei Zhao8Lu-lu Chen9Qiang Zhu10Xiao-xi Zhou11Tianjin Center, China Geological Survey, Ministry of Natural Resources, Tianjin 300170, China; Key Laboratory of Uranium Geology, China Geological Survey, Tianjin 300170, ChinaTianjin Center, China Geological Survey, Ministry of Natural Resources, Tianjin 300170, China; Key Laboratory of Uranium Geology, China Geological Survey, Tianjin 300170, China; Corresponding author: E-mail address: tjfengxiaoxi@163.com (Xiao-xi Feng).Tianjin Center, China Geological Survey, Ministry of Natural Resources, Tianjin 300170, China; Key Laboratory of Uranium Geology, China Geological Survey, Tianjin 300170, ChinaEast China University of Technology, Nanchang 330013, ChinaChengdu University of Technology, Chengdu 510090, ChinaChina Institute of Nuclear Information and Economics, Beijing 100048, ChinaBeijing Research Institute of Uranium Geology, Beijing 100029, ChinaTianjin Center, China Geological Survey, Ministry of Natural Resources, Tianjin 300170, China; Key Laboratory of Uranium Geology, China Geological Survey, Tianjin 300170, ChinaTianjin Center, China Geological Survey, Ministry of Natural Resources, Tianjin 300170, China; Key Laboratory of Uranium Geology, China Geological Survey, Tianjin 300170, ChinaTianjin Center, China Geological Survey, Ministry of Natural Resources, Tianjin 300170, China; Key Laboratory of Uranium Geology, China Geological Survey, Tianjin 300170, ChinaTianjin Center, China Geological Survey, Ministry of Natural Resources, Tianjin 300170, China; Key Laboratory of Uranium Geology, China Geological Survey, Tianjin 300170, ChinaTianjin Center, China Geological Survey, Ministry of Natural Resources, Tianjin 300170, China; Key Laboratory of Uranium Geology, China Geological Survey, Tianjin 300170, ChinaABSTRACT: The middle Jurassic Zhiluo Formation in the Dongsheng is comprised of a big set of green sandstone/mudstone with most of uranium orebodies occurring in close proximity to its footwall. By synthesizing field observations, region analysis, data collected from previous coal and uranium borehole, a regional north-south geological profile across the entire orefield is conducted. Experiments on sandstone/mudstone including rock mineral identification, clastic micromorphology and element geochemistry were carried out. Information from the geological profile indicates that green sandstone/mudstone is widely present in a stable horizon with clear boundaries to the country rock. Microscopic observations and geochemical data on sandstone/mudstone exhibit similar mineral composition with almost identical slightly flat, minor Eu enriched, Ce depleted chondrite-normalized REE patterns. Furthermore, the green clay membrane of the clasts has a complex composition containing chlorite/smectite, green smectite, chlorite, and green kaolinite, with elements including Fe, Mg, Si, and Al. These above results indicate that the green sandstone/mudstone underwent resemble sedimentary diagenetic processes as the country rock without transformation by large-scale regional fluid, while the existence of Fe2+-rich membrane is the main factor to the green sandstone/mudstone. Further concentration of the pre-enrichment uranium during diagenetic process led to the final formation for uranium deposits. The above studies are conducive to enrich the metallogenic mechanism of sandstone type uranium deposits and could provide certain reference for uranium exploration and deployment.http://www.sciencedirect.com/science/article/pii/S2096519220300264Sandstone-type uranium depositGreen sandstone/mudstoneDiagenesisZhiluo FormationMinerral exploration engineeringOrdos Basin |
| spellingShingle | Ruo-shi Jin Xiao-xi Feng Xue-ming Teng Feng-jun Nie Hai-yang Cao Hui-qun Hou Hong-xu Liu Pei-sen Miao Hua-lei Zhao Lu-lu Chen Qiang Zhu Xiao-xi Zhou Genesis of green sandstone/mudstone from Middle Jurassic Zhiluo Formation in the Dongsheng Uranium Orefield, Ordos Basin and its enlightenment for uranium mineralization China Geology Sandstone-type uranium deposit Green sandstone/mudstone Diagenesis Zhiluo Formation Minerral exploration engineering Ordos Basin |
| title | Genesis of green sandstone/mudstone from Middle Jurassic Zhiluo Formation in the Dongsheng Uranium Orefield, Ordos Basin and its enlightenment for uranium mineralization |
| title_full | Genesis of green sandstone/mudstone from Middle Jurassic Zhiluo Formation in the Dongsheng Uranium Orefield, Ordos Basin and its enlightenment for uranium mineralization |
| title_fullStr | Genesis of green sandstone/mudstone from Middle Jurassic Zhiluo Formation in the Dongsheng Uranium Orefield, Ordos Basin and its enlightenment for uranium mineralization |
| title_full_unstemmed | Genesis of green sandstone/mudstone from Middle Jurassic Zhiluo Formation in the Dongsheng Uranium Orefield, Ordos Basin and its enlightenment for uranium mineralization |
| title_short | Genesis of green sandstone/mudstone from Middle Jurassic Zhiluo Formation in the Dongsheng Uranium Orefield, Ordos Basin and its enlightenment for uranium mineralization |
| title_sort | genesis of green sandstone mudstone from middle jurassic zhiluo formation in the dongsheng uranium orefield ordos basin and its enlightenment for uranium mineralization |
| topic | Sandstone-type uranium deposit Green sandstone/mudstone Diagenesis Zhiluo Formation Minerral exploration engineering Ordos Basin |
| url | http://www.sciencedirect.com/science/article/pii/S2096519220300264 |
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