U–Pb Dating and Hf Isotopes Analysis of Detrital Zircons of the Shanxi Formation in the Otuokeqi Area, Northwestern Ordos Basin
The Paleozoic strata are widely distributed in the northwest of the Ordos Basin, and the provenance attributes of the basin sediments during this period are still controversial. In this paper, the detrital zircon LA-MC-ICPMS U-Pb age test was conducted on the drilling core samples of the Shanxi Form...
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2021-01-01
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Online Access: | http://dx.doi.org/10.1155/2021/6693005 |
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author | Jiaxuan Song Hujun Gong Jingli Yao Huitao Zhao Xiaohui Zhao Yunxiang Zhang Biao Chen |
author_facet | Jiaxuan Song Hujun Gong Jingli Yao Huitao Zhao Xiaohui Zhao Yunxiang Zhang Biao Chen |
author_sort | Jiaxuan Song |
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description | The Paleozoic strata are widely distributed in the northwest of the Ordos Basin, and the provenance attributes of the basin sediments during this period are still controversial. In this paper, the detrital zircon LA-MC-ICPMS U-Pb age test was conducted on the drilling core samples of the Shanxi Formation of the Upper Paleozoic in the Otuokeqi area of the Ordos Basin, and the provenance age and the characteristic of the Shanxi formation in the Otuokeqi area in the northwest were discussed. The cathodoluminescence image shows that the detrital zircon has a clear core-edge structure, and most of the cores have clear oscillatory zonings, which suggests that they are magmatic in origin. Zircons have no oscillatory zoning structure that shows the cause of metamorphism. The age of detrital zircon is dominated by Paleoproterozoic and can be divided into four groups, which are 2500~2300 Ma, 2100~1600 Ma, 470~400 Ma, and 360~260 Ma. The first two groups are the specific manifestations of the Precambrian Fuping Movement (2.5 billion years) and the Luliang Movement (1.8 billion years) of the North China Craton. The third and fourth groups of detrital zircons mainly come from Paleozoic magmatic rocks formed by the subduction and collision of the Siberian plate and the North China plate. The εHft value of zircon ranges from -18.36 to 4.33, and the age of the second-order Hf model TDM2 ranges from 2491 to 1175 Ma. The source rock reflecting the provenance of the sediments comes from the material recycling of the Paleoproterozoic and Mesoproterozoic in the crust, combined with the Meso-Neoproterozoic detrital zircons discovered this time, indicating that the provenance area has experienced Greenwellian orogeny. |
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spelling | doaj-art-448a90adfeab4703a9312b94111855a12025-02-03T01:00:17ZengWileyGeofluids1468-81151468-81232021-01-01202110.1155/2021/66930056693005U–Pb Dating and Hf Isotopes Analysis of Detrital Zircons of the Shanxi Formation in the Otuokeqi Area, Northwestern Ordos BasinJiaxuan Song0Hujun Gong1Jingli Yao2Huitao Zhao3Xiaohui Zhao4Yunxiang Zhang5Biao Chen6State Key Laboratory of Continental Dynamics, Department of Geology, Northwest University, Xi’an, 710069 Shaanxi, ChinaState Key Laboratory of Continental Dynamics, Department of Geology, Northwest University, Xi’an, 710069 Shaanxi, ChinaExploration & Development Research Institute of PetroChina Changqing Oilfield Company, Xi’an 710018, ChinaExploration & Development Research Institute of PetroChina Changqing Oilfield Company, Xi’an 710018, ChinaExploration & Development Research Institute of PetroChina Changqing Oilfield Company, Xi’an 710018, ChinaState Key Laboratory of Continental Dynamics, Department of Geology, Northwest University, Xi’an, 710069 Shaanxi, ChinaState Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization, Baotou Research Institute of Rare Earths, Baotou 014030, ChinaThe Paleozoic strata are widely distributed in the northwest of the Ordos Basin, and the provenance attributes of the basin sediments during this period are still controversial. In this paper, the detrital zircon LA-MC-ICPMS U-Pb age test was conducted on the drilling core samples of the Shanxi Formation of the Upper Paleozoic in the Otuokeqi area of the Ordos Basin, and the provenance age and the characteristic of the Shanxi formation in the Otuokeqi area in the northwest were discussed. The cathodoluminescence image shows that the detrital zircon has a clear core-edge structure, and most of the cores have clear oscillatory zonings, which suggests that they are magmatic in origin. Zircons have no oscillatory zoning structure that shows the cause of metamorphism. The age of detrital zircon is dominated by Paleoproterozoic and can be divided into four groups, which are 2500~2300 Ma, 2100~1600 Ma, 470~400 Ma, and 360~260 Ma. The first two groups are the specific manifestations of the Precambrian Fuping Movement (2.5 billion years) and the Luliang Movement (1.8 billion years) of the North China Craton. The third and fourth groups of detrital zircons mainly come from Paleozoic magmatic rocks formed by the subduction and collision of the Siberian plate and the North China plate. The εHft value of zircon ranges from -18.36 to 4.33, and the age of the second-order Hf model TDM2 ranges from 2491 to 1175 Ma. The source rock reflecting the provenance of the sediments comes from the material recycling of the Paleoproterozoic and Mesoproterozoic in the crust, combined with the Meso-Neoproterozoic detrital zircons discovered this time, indicating that the provenance area has experienced Greenwellian orogeny.http://dx.doi.org/10.1155/2021/6693005 |
spellingShingle | Jiaxuan Song Hujun Gong Jingli Yao Huitao Zhao Xiaohui Zhao Yunxiang Zhang Biao Chen U–Pb Dating and Hf Isotopes Analysis of Detrital Zircons of the Shanxi Formation in the Otuokeqi Area, Northwestern Ordos Basin Geofluids |
title | U–Pb Dating and Hf Isotopes Analysis of Detrital Zircons of the Shanxi Formation in the Otuokeqi Area, Northwestern Ordos Basin |
title_full | U–Pb Dating and Hf Isotopes Analysis of Detrital Zircons of the Shanxi Formation in the Otuokeqi Area, Northwestern Ordos Basin |
title_fullStr | U–Pb Dating and Hf Isotopes Analysis of Detrital Zircons of the Shanxi Formation in the Otuokeqi Area, Northwestern Ordos Basin |
title_full_unstemmed | U–Pb Dating and Hf Isotopes Analysis of Detrital Zircons of the Shanxi Formation in the Otuokeqi Area, Northwestern Ordos Basin |
title_short | U–Pb Dating and Hf Isotopes Analysis of Detrital Zircons of the Shanxi Formation in the Otuokeqi Area, Northwestern Ordos Basin |
title_sort | u pb dating and hf isotopes analysis of detrital zircons of the shanxi formation in the otuokeqi area northwestern ordos basin |
url | http://dx.doi.org/10.1155/2021/6693005 |
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