Paleoenvironment of the Lower Ordovician Meitan Formation in the Sichuan Basin and Adjacent Areas, China
The quality of hydrocarbon source rocks is affected by the sedimentary paleoenvironment. A paleoenvironment with anoxia and a high paleoproductivity is beneficial to source rocks. The paleoenvironment of the Lower Ordovician Meitan Formation of the Sichuan Basin and its adjacent areas is lacking, re...
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| Format: | Article |
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MDPI AG
2022-01-01
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| Series: | Minerals |
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| Online Access: | https://www.mdpi.com/2075-163X/12/1/75 |
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| author | Meihua Yang Yinhui Zuo Xiaodong Fu Lei Qiu Wenzheng Li Jianyong Zhang Ziyun Zheng Jiazhen Zhang |
| author_facet | Meihua Yang Yinhui Zuo Xiaodong Fu Lei Qiu Wenzheng Li Jianyong Zhang Ziyun Zheng Jiazhen Zhang |
| author_sort | Meihua Yang |
| collection | DOAJ |
| description | The quality of hydrocarbon source rocks is affected by the sedimentary paleoenvironment. A paleoenvironment with anoxia and a high paleoproductivity is beneficial to source rocks. The paleoenvironment of the Lower Ordovician Meitan Formation of the Sichuan Basin and its adjacent areas is lacking, restricting the oil and gas exploration of the Ordovician in the Sichuan Basin and its adjacent areas. In this paper, the content of major and trace elements of 50 samples was tested to clarify the paleoenvironment of the Meitan Formation. The paleoclimate, paleosalinity, paleoredox, and paleoproductivity during the deposition of the Meitan Formation were analyzed. The control effect of the paleoenvironment on the development of source rocks was clarified, and the favorable paleoenvironment for source rock development was pointed out. The results show that the paleoenvironment of the Meitan Formation has the following characteristics: humidity, brackish water, oxygen depletion, anoxia environment, and high paleoproductivity. These characteristics are conducive to the development of poor and moderate source rocks. The source rocks of the Meitan Formation were developed in the north, west, and south of the Sichuan Basin and its adjacent areas. The organic matter of the source rocks is mainly typed II<sub>1</sub> kerogen, and the quality is evaluated as poor-medium source rocks having the potential of generating oil and gas. This study can provide fundamental parameters for the further exploration of Ordovician petroleum. |
| first_indexed | 2024-03-10T00:51:35Z |
| format | Article |
| id | doaj.art-1cbb589dc5024edc9ddbda1fd68245a5 |
| institution | Directory Open Access Journal |
| issn | 2075-163X |
| language | English |
| last_indexed | 2024-03-10T00:51:35Z |
| publishDate | 2022-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Minerals |
| spelling | doaj.art-1cbb589dc5024edc9ddbda1fd68245a52023-11-23T14:49:53ZengMDPI AGMinerals2075-163X2022-01-011217510.3390/min12010075Paleoenvironment of the Lower Ordovician Meitan Formation in the Sichuan Basin and Adjacent Areas, ChinaMeihua Yang0Yinhui Zuo1Xiaodong Fu2Lei Qiu3Wenzheng Li4Jianyong Zhang5Ziyun Zheng6Jiazhen Zhang7State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Chengdu University of Technology, Chengdu 610059, ChinaState Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Chengdu University of Technology, Chengdu 610059, ChinaPetroChina Hangzhou Research Institute of Geology, Hangzhou 310023, ChinaState Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Chengdu University of Technology, Chengdu 610059, ChinaPetroChina Hangzhou Research Institute of Geology, Hangzhou 310023, ChinaPetroChina Hangzhou Research Institute of Geology, Hangzhou 310023, ChinaState Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Chengdu University of Technology, Chengdu 610059, ChinaState Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Chengdu University of Technology, Chengdu 610059, ChinaThe quality of hydrocarbon source rocks is affected by the sedimentary paleoenvironment. A paleoenvironment with anoxia and a high paleoproductivity is beneficial to source rocks. The paleoenvironment of the Lower Ordovician Meitan Formation of the Sichuan Basin and its adjacent areas is lacking, restricting the oil and gas exploration of the Ordovician in the Sichuan Basin and its adjacent areas. In this paper, the content of major and trace elements of 50 samples was tested to clarify the paleoenvironment of the Meitan Formation. The paleoclimate, paleosalinity, paleoredox, and paleoproductivity during the deposition of the Meitan Formation were analyzed. The control effect of the paleoenvironment on the development of source rocks was clarified, and the favorable paleoenvironment for source rock development was pointed out. The results show that the paleoenvironment of the Meitan Formation has the following characteristics: humidity, brackish water, oxygen depletion, anoxia environment, and high paleoproductivity. These characteristics are conducive to the development of poor and moderate source rocks. The source rocks of the Meitan Formation were developed in the north, west, and south of the Sichuan Basin and its adjacent areas. The organic matter of the source rocks is mainly typed II<sub>1</sub> kerogen, and the quality is evaluated as poor-medium source rocks having the potential of generating oil and gas. This study can provide fundamental parameters for the further exploration of Ordovician petroleum.https://www.mdpi.com/2075-163X/12/1/75paleoenvironmentmudstonesource rockMeitan FormationSichuan Basin and its adjacent areas |
| spellingShingle | Meihua Yang Yinhui Zuo Xiaodong Fu Lei Qiu Wenzheng Li Jianyong Zhang Ziyun Zheng Jiazhen Zhang Paleoenvironment of the Lower Ordovician Meitan Formation in the Sichuan Basin and Adjacent Areas, China Minerals paleoenvironment mudstone source rock Meitan Formation Sichuan Basin and its adjacent areas |
| title | Paleoenvironment of the Lower Ordovician Meitan Formation in the Sichuan Basin and Adjacent Areas, China |
| title_full | Paleoenvironment of the Lower Ordovician Meitan Formation in the Sichuan Basin and Adjacent Areas, China |
| title_fullStr | Paleoenvironment of the Lower Ordovician Meitan Formation in the Sichuan Basin and Adjacent Areas, China |
| title_full_unstemmed | Paleoenvironment of the Lower Ordovician Meitan Formation in the Sichuan Basin and Adjacent Areas, China |
| title_short | Paleoenvironment of the Lower Ordovician Meitan Formation in the Sichuan Basin and Adjacent Areas, China |
| title_sort | paleoenvironment of the lower ordovician meitan formation in the sichuan basin and adjacent areas china |
| topic | paleoenvironment mudstone source rock Meitan Formation Sichuan Basin and its adjacent areas |
| url | https://www.mdpi.com/2075-163X/12/1/75 |
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