Sedimentology and sequence stratigraphy of the mixed clastic-carbonate deposits in the Late Paleozoic icehouse period: A case study from the northern Qaidam Basin
The widely-developed, mixed clastic-carbonate succession in the northern Qaidam Basin records the paleo-environment changes under the glacial activity during the Late Paleozoic icehouse period in the context of regional tectonic stability, however, the depositional environment and sequence stratigra...
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KeAi Communications Co., Ltd.
2021-12-01
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| Series: | China Geology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2096519222000118 |
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| author | Xiao-jie Wei Zong-xing Li Yin-sheng Ma Yi-fan Li Jun-jie Hu Kui Liu Xin-xin Fang |
| author_facet | Xiao-jie Wei Zong-xing Li Yin-sheng Ma Yi-fan Li Jun-jie Hu Kui Liu Xin-xin Fang |
| author_sort | Xiao-jie Wei |
| collection | DOAJ |
| description | The widely-developed, mixed clastic-carbonate succession in the northern Qaidam Basin records the paleo-environment changes under the glacial activity during the Late Paleozoic icehouse period in the context of regional tectonic stability, however, the depositional environment and sequence stratigraphy characteristics of the mixed deposits is rarely reported and still not clear. Combined the latest drilling wells data, we analyzed the sedimentary and stratigraphic characterization of the mixed strata via detailed field outcrops and core observations and thin section microscopic observations and recognized three depositional systems, including progradational coastal system, incised valley system, and carbonate-dominated marine shelf system, and identified four third-order sequences, SQ1, SQ2, SQ3 and SQ4, consisting of LST, TST, and HST. The depositional environment is overall belonged to marine-continental transition context and shifted from marine to continental environment frequently, showing an evolutionary pattern from marine towards terrestrial-marine transition and then back into the marine environment again in the long-term, which was controlled by the regional tectonic subsidence and the high-frequency and large-amplitude sea-level changes due to the Late Paleozoic glacial activity. The result is of significance in understanding the evolution of the Qinghai-Tibet Plateau and the sedimentation-climate response.©2021 China Geology Editorial Office. |
| first_indexed | 2024-04-10T16:57:29Z |
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| institution | Directory Open Access Journal |
| issn | 2096-5192 |
| language | English |
| last_indexed | 2024-04-10T16:57:29Z |
| publishDate | 2021-12-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | China Geology |
| spelling | doaj.art-774d2b6e5627421ea9b09c2a5e9df5422023-02-07T04:22:47ZengKeAi Communications Co., Ltd.China Geology2096-51922021-12-0144673685Sedimentology and sequence stratigraphy of the mixed clastic-carbonate deposits in the Late Paleozoic icehouse period: A case study from the northern Qaidam BasinXiao-jie Wei0Zong-xing Li1Yin-sheng Ma2Yi-fan Li3Jun-jie Hu4Kui Liu5Xin-xin Fang6Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081, China; Key Laboratory of Paleomagnetism and Tectonic Reconstruction, Ministry of Natural Resources, Beijing 100081, China; Key Laboratory of Petroleum Geomechanics, China Geological Survey, Beijing 100081, China; First author: E-mail address: vivi-stefanie2008@hotmail.com (Xiao-jie Wei).Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081, China; Key Laboratory of Paleomagnetism and Tectonic Reconstruction, Ministry of Natural Resources, Beijing 100081, China; Key Laboratory of Petroleum Geomechanics, China Geological Survey, Beijing 100081, China; Corresponding author: E-mail address: zongxingli2012@163.com (Zong-xing Li).Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081, China; Key Laboratory of Paleomagnetism and Tectonic Reconstruction, Ministry of Natural Resources, Beijing 100081, China; Key Laboratory of Petroleum Geomechanics, China Geological Survey, Beijing 100081, ChinaSchool of Energy Resources, China University of Geosciences, Beijing, Beijing 100083, ChinaInstitute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081, China; Key Laboratory of Paleomagnetism and Tectonic Reconstruction, Ministry of Natural Resources, Beijing 100081, China; Key Laboratory of Petroleum Geomechanics, China Geological Survey, Beijing 100081, ChinaUniversity of Chinese Academy of Science, Beijing 100049, ChinaInstitute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081, China; Key Laboratory of Paleomagnetism and Tectonic Reconstruction, Ministry of Natural Resources, Beijing 100081, China; Key Laboratory of Petroleum Geomechanics, China Geological Survey, Beijing 100081, ChinaThe widely-developed, mixed clastic-carbonate succession in the northern Qaidam Basin records the paleo-environment changes under the glacial activity during the Late Paleozoic icehouse period in the context of regional tectonic stability, however, the depositional environment and sequence stratigraphy characteristics of the mixed deposits is rarely reported and still not clear. Combined the latest drilling wells data, we analyzed the sedimentary and stratigraphic characterization of the mixed strata via detailed field outcrops and core observations and thin section microscopic observations and recognized three depositional systems, including progradational coastal system, incised valley system, and carbonate-dominated marine shelf system, and identified four third-order sequences, SQ1, SQ2, SQ3 and SQ4, consisting of LST, TST, and HST. The depositional environment is overall belonged to marine-continental transition context and shifted from marine to continental environment frequently, showing an evolutionary pattern from marine towards terrestrial-marine transition and then back into the marine environment again in the long-term, which was controlled by the regional tectonic subsidence and the high-frequency and large-amplitude sea-level changes due to the Late Paleozoic glacial activity. The result is of significance in understanding the evolution of the Qinghai-Tibet Plateau and the sedimentation-climate response.©2021 China Geology Editorial Office.http://www.sciencedirect.com/science/article/pii/S2096519222000118Late Paleozoic icehouse periodMixed clastic-carbonate successionMarine-continental transitionSedimentation-climate responseGeological survey engineeringQinghai-Tibetan Plateau |
| spellingShingle | Xiao-jie Wei Zong-xing Li Yin-sheng Ma Yi-fan Li Jun-jie Hu Kui Liu Xin-xin Fang Sedimentology and sequence stratigraphy of the mixed clastic-carbonate deposits in the Late Paleozoic icehouse period: A case study from the northern Qaidam Basin China Geology Late Paleozoic icehouse period Mixed clastic-carbonate succession Marine-continental transition Sedimentation-climate response Geological survey engineering Qinghai-Tibetan Plateau |
| title | Sedimentology and sequence stratigraphy of the mixed clastic-carbonate deposits in the Late Paleozoic icehouse period: A case study from the northern Qaidam Basin |
| title_full | Sedimentology and sequence stratigraphy of the mixed clastic-carbonate deposits in the Late Paleozoic icehouse period: A case study from the northern Qaidam Basin |
| title_fullStr | Sedimentology and sequence stratigraphy of the mixed clastic-carbonate deposits in the Late Paleozoic icehouse period: A case study from the northern Qaidam Basin |
| title_full_unstemmed | Sedimentology and sequence stratigraphy of the mixed clastic-carbonate deposits in the Late Paleozoic icehouse period: A case study from the northern Qaidam Basin |
| title_short | Sedimentology and sequence stratigraphy of the mixed clastic-carbonate deposits in the Late Paleozoic icehouse period: A case study from the northern Qaidam Basin |
| title_sort | sedimentology and sequence stratigraphy of the mixed clastic carbonate deposits in the late paleozoic icehouse period a case study from the northern qaidam basin |
| topic | Late Paleozoic icehouse period Mixed clastic-carbonate succession Marine-continental transition Sedimentation-climate response Geological survey engineering Qinghai-Tibetan Plateau |
| url | http://www.sciencedirect.com/science/article/pii/S2096519222000118 |
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