3D inversion of the Sichuan Basin magnetic anomaly in South China and its geological significance
Abstract The Sichuan Basin magnetic anomaly is the most striking regional aeromagnetic anomaly in South China. It is characterized by a continuous large-scale linear magnetic anomaly and contains long-wavelength constituents which could still be detected on satellites. However, Sichuan Basin is cove...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2020-03-01
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| Series: | Earth, Planets and Space |
| Subjects: | |
| Online Access: | http://link.springer.com/article/10.1186/s40623-020-01167-5 |
| _version_ | 1811204273749360640 |
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| author | Jie Wang Changli Yao Zelin Li Yuanman Zheng Xuhui Shen Zhima Zeren Wenlong Liu |
| author_facet | Jie Wang Changli Yao Zelin Li Yuanman Zheng Xuhui Shen Zhima Zeren Wenlong Liu |
| author_sort | Jie Wang |
| collection | DOAJ |
| description | Abstract The Sichuan Basin magnetic anomaly is the most striking regional aeromagnetic anomaly in South China. It is characterized by a continuous large-scale linear magnetic anomaly and contains long-wavelength constituents which could still be detected on satellites. However, Sichuan Basin is covered by 4 to 10 km thick non-magnetic sedimentary layers from Neoproterozoic to Cenozoic, which conceals the magnetic sources in the Precambrian basement and makes it difficult to explore the geological origin of the Sichuan Basin magnetic anomaly. In this study, we applied 3D inversion to the magnetic data, and then compared our inverted susceptibility model with geological maps. We found that the spatial distribution of the Sichuan Basin magnetic anomaly controls the range of the rigid basement beneath Sichuan Basin and it is surrounded by the widespread Neoproterozoic magmatic complexes. Based on our analysis, we proposed that the geological origin of the Sichuan Basin magnetic anomaly might be related to the craton-scale Neoproterozoic magmatic event, which has played an important role in the stabilization of the basement and the evolution of the deep crust in Sichuan Basin. |
| first_indexed | 2024-04-12T03:09:51Z |
| format | Article |
| id | doaj.art-c1ac816982d542579e9ba9a384e654a2 |
| institution | Directory Open Access Journal |
| issn | 1880-5981 |
| language | English |
| last_indexed | 2024-04-12T03:09:51Z |
| publishDate | 2020-03-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Earth, Planets and Space |
| spelling | doaj.art-c1ac816982d542579e9ba9a384e654a22022-12-22T03:50:23ZengSpringerOpenEarth, Planets and Space1880-59812020-03-0172111010.1186/s40623-020-01167-53D inversion of the Sichuan Basin magnetic anomaly in South China and its geological significanceJie Wang0Changli Yao1Zelin Li2Yuanman Zheng3Xuhui Shen4Zhima Zeren5Wenlong Liu6Institute of Crustal Dynamics, China Earthquake AdministrationSchool of Geophysics and Information, China University of GeosciencesSchool of Earth Science and Engineering, Hebei University of EngineeringSchool of Geophysics and Information, China University of GeosciencesInstitute of Crustal Dynamics, China Earthquake AdministrationInstitute of Crustal Dynamics, China Earthquake AdministrationSchool of Space and Environment, Beihang UniversityAbstract The Sichuan Basin magnetic anomaly is the most striking regional aeromagnetic anomaly in South China. It is characterized by a continuous large-scale linear magnetic anomaly and contains long-wavelength constituents which could still be detected on satellites. However, Sichuan Basin is covered by 4 to 10 km thick non-magnetic sedimentary layers from Neoproterozoic to Cenozoic, which conceals the magnetic sources in the Precambrian basement and makes it difficult to explore the geological origin of the Sichuan Basin magnetic anomaly. In this study, we applied 3D inversion to the magnetic data, and then compared our inverted susceptibility model with geological maps. We found that the spatial distribution of the Sichuan Basin magnetic anomaly controls the range of the rigid basement beneath Sichuan Basin and it is surrounded by the widespread Neoproterozoic magmatic complexes. Based on our analysis, we proposed that the geological origin of the Sichuan Basin magnetic anomaly might be related to the craton-scale Neoproterozoic magmatic event, which has played an important role in the stabilization of the basement and the evolution of the deep crust in Sichuan Basin.http://link.springer.com/article/10.1186/s40623-020-01167-5Magnetic anomalyLong-wavelength magnetic anomaly3D inversionSichuan BasinSouth ChinaNeoproterozoic |
| spellingShingle | Jie Wang Changli Yao Zelin Li Yuanman Zheng Xuhui Shen Zhima Zeren Wenlong Liu 3D inversion of the Sichuan Basin magnetic anomaly in South China and its geological significance Earth, Planets and Space Magnetic anomaly Long-wavelength magnetic anomaly 3D inversion Sichuan Basin South China Neoproterozoic |
| title | 3D inversion of the Sichuan Basin magnetic anomaly in South China and its geological significance |
| title_full | 3D inversion of the Sichuan Basin magnetic anomaly in South China and its geological significance |
| title_fullStr | 3D inversion of the Sichuan Basin magnetic anomaly in South China and its geological significance |
| title_full_unstemmed | 3D inversion of the Sichuan Basin magnetic anomaly in South China and its geological significance |
| title_short | 3D inversion of the Sichuan Basin magnetic anomaly in South China and its geological significance |
| title_sort | 3d inversion of the sichuan basin magnetic anomaly in south china and its geological significance |
| topic | Magnetic anomaly Long-wavelength magnetic anomaly 3D inversion Sichuan Basin South China Neoproterozoic |
| url | http://link.springer.com/article/10.1186/s40623-020-01167-5 |
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