A new understanding of Jurassic provenance and sedimentary framework in northwestern Sikeshu Sag, Junggar Basin, China
For a basin or sag with low exploration maturity, the understanding of its provenance system and clastic distribution system is the key to the analysis of its sedimentary framework and further influence the decision making and deployment of exploration. This study analyzed the Jurassic provenance of...
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| Language: | English |
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KeAi Communications Co., Ltd.
2022-10-01
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| Series: | Energy Geoscience |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666759222000464 |
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| author | Lanquan Zhao Haomin Qin Chengqian Yu Chaonian Si Wen Jiang Aifeng Cao |
| author_facet | Lanquan Zhao Haomin Qin Chengqian Yu Chaonian Si Wen Jiang Aifeng Cao |
| author_sort | Lanquan Zhao |
| collection | DOAJ |
| description | For a basin or sag with low exploration maturity, the understanding of its provenance system and clastic distribution system is the key to the analysis of its sedimentary framework and further influence the decision making and deployment of exploration. This study analyzed the Jurassic provenance of the Sikeshu Sag based on the data from cores, well logging, and seismic survey. The analysis of seismic profile characteristics revealed that there is a remote possibility that the Chepaizi Uplift in the northern part serves as the main Jurassic provenance of the Sikeshu Sag. On the contrary, systematic indicative signs of provenance have developed in the study area, including west-to-east progradational reflection configurations and composite mounded reflections that show bi-directional downlapping contact in both the south and north directions. These systematic indicative signs suggest that the denuded uplift area in the western part is the main Jurassic provenance in the study area. Controlled by the provenance in the western part, the study area shows an orderly distribution of paleosedimentary systems from west to east and from shallow to deep water. The paleosedimentary system mainly exhibits the following characteristics after undergoing later high-intensity transformation. (1) The western part is dominated by the subfacies of a braided river delta front and is composed of three microfacies including distributary channels, interdistributary bays, and sandbars; (2) The middle and eastern parts show a semi-deep lacustrine environment, where debris flow sedimentary systems of slumping origin or in deep canyons, gullies and channels connected to the denudation area developed from west to east. These debris flow sedimentary systems jointly form the clastic sedimentary system under the control of western provenance. |
| first_indexed | 2024-04-12T23:00:37Z |
| format | Article |
| id | doaj.art-d0087a6b1ecc4abf9c92cabec22d6a6a |
| institution | Directory Open Access Journal |
| issn | 2666-7592 |
| language | English |
| last_indexed | 2024-04-12T23:00:37Z |
| publishDate | 2022-10-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Energy Geoscience |
| spelling | doaj.art-d0087a6b1ecc4abf9c92cabec22d6a6a2022-12-22T03:13:04ZengKeAi Communications Co., Ltd.Energy Geoscience2666-75922022-10-0134372380A new understanding of Jurassic provenance and sedimentary framework in northwestern Sikeshu Sag, Junggar Basin, ChinaLanquan Zhao0Haomin Qin1Chengqian Yu2Chaonian Si3Wen Jiang4Aifeng Cao5Exploration and Development Research Institute, Shengli Oilfield Company, Sinopec, Dongying, 257015, ChinaBeijing Jingyan Geotechnical Co., Ltd, Beijing, 100000, ChinaSchool of Energy Resources, China University of Geosciences, Beijing, 100083, China; Corresponding author.SINOPEC Exploration & Production Research Institute, Beijing, 102206, ChinaSchool of Energy Resources, China University of Geosciences, Beijing, 100083, ChinaExploration and Development Research Institute, Shengli Oilfield Company, Sinopec, Dongying, 257015, ChinaFor a basin or sag with low exploration maturity, the understanding of its provenance system and clastic distribution system is the key to the analysis of its sedimentary framework and further influence the decision making and deployment of exploration. This study analyzed the Jurassic provenance of the Sikeshu Sag based on the data from cores, well logging, and seismic survey. The analysis of seismic profile characteristics revealed that there is a remote possibility that the Chepaizi Uplift in the northern part serves as the main Jurassic provenance of the Sikeshu Sag. On the contrary, systematic indicative signs of provenance have developed in the study area, including west-to-east progradational reflection configurations and composite mounded reflections that show bi-directional downlapping contact in both the south and north directions. These systematic indicative signs suggest that the denuded uplift area in the western part is the main Jurassic provenance in the study area. Controlled by the provenance in the western part, the study area shows an orderly distribution of paleosedimentary systems from west to east and from shallow to deep water. The paleosedimentary system mainly exhibits the following characteristics after undergoing later high-intensity transformation. (1) The western part is dominated by the subfacies of a braided river delta front and is composed of three microfacies including distributary channels, interdistributary bays, and sandbars; (2) The middle and eastern parts show a semi-deep lacustrine environment, where debris flow sedimentary systems of slumping origin or in deep canyons, gullies and channels connected to the denudation area developed from west to east. These debris flow sedimentary systems jointly form the clastic sedimentary system under the control of western provenance.http://www.sciencedirect.com/science/article/pii/S2666759222000464Clastic rockJurassic systemProvenance systemSedimentary frameworkSikeshu SagJunggar Basin |
| spellingShingle | Lanquan Zhao Haomin Qin Chengqian Yu Chaonian Si Wen Jiang Aifeng Cao A new understanding of Jurassic provenance and sedimentary framework in northwestern Sikeshu Sag, Junggar Basin, China Energy Geoscience Clastic rock Jurassic system Provenance system Sedimentary framework Sikeshu Sag Junggar Basin |
| title | A new understanding of Jurassic provenance and sedimentary framework in northwestern Sikeshu Sag, Junggar Basin, China |
| title_full | A new understanding of Jurassic provenance and sedimentary framework in northwestern Sikeshu Sag, Junggar Basin, China |
| title_fullStr | A new understanding of Jurassic provenance and sedimentary framework in northwestern Sikeshu Sag, Junggar Basin, China |
| title_full_unstemmed | A new understanding of Jurassic provenance and sedimentary framework in northwestern Sikeshu Sag, Junggar Basin, China |
| title_short | A new understanding of Jurassic provenance and sedimentary framework in northwestern Sikeshu Sag, Junggar Basin, China |
| title_sort | new understanding of jurassic provenance and sedimentary framework in northwestern sikeshu sag junggar basin china |
| topic | Clastic rock Jurassic system Provenance system Sedimentary framework Sikeshu Sag Junggar Basin |
| url | http://www.sciencedirect.com/science/article/pii/S2666759222000464 |
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