A Fossil Paleozoic Subduction-Dominated Trench-Arc-Basin System Revealed by Airborne Magnetic-Gravity Imaging in West Junggar, NW China
A Carboniferous trench-arc-basin system related to oceanic slab subduction has been thoroughly imaged by various geophysical probing approaches and proposed for the formation of West Junggar, Northwest China, located in the southwest of the Central Asian Orogenic Belt. However, debate on the origin...
| Main Authors: | , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Frontiers Media S.A.
2021-12-01
|
| Series: | Frontiers in Earth Science |
| Subjects: | |
| Online Access: | https://www.frontiersin.org/articles/10.3389/feart.2021.760305/full |
| _version_ | 1818329592324161536 |
|---|---|
| author | Qifang Zheng Xi Xu Wan Zhang Yuzhou Zheng Yinghui Liu Xingtao Kuang Daoqing Zhou Xuezhong Yu Baodi Wang |
| author_facet | Qifang Zheng Xi Xu Wan Zhang Yuzhou Zheng Yinghui Liu Xingtao Kuang Daoqing Zhou Xuezhong Yu Baodi Wang |
| author_sort | Qifang Zheng |
| collection | DOAJ |
| description | A Carboniferous trench-arc-basin system related to oceanic slab subduction has been thoroughly imaged by various geophysical probing approaches and proposed for the formation of West Junggar, Northwest China, located in the southwest of the Central Asian Orogenic Belt. However, debate on the origin of West Junggar still continues. Here, we present an integrated aeronautic magnetic–gravity observation to further identify the trench-arc-basin system and constrain the subduction mode. By deploying an integrated aerial magnetic–gravity survey consisting of 66,000 survey-line kilometers from August 3, 2015 to April 22, 2016, we determine the magnetic and gravitational anomaly across the study region by using geophysical potential-field processing. Our results reveal curial crust-scale variations in magnetic and gravitational structures beneath West Junggar and that a prominent Bouguer gravity high is located between the Darbut and Karamay–Urho faults, likely corresponding to a trapped oceanic slab. Notably, the Tacheng Basin is characterized by high-frequency magnetic signal and gravity highs, as well as the Carboniferous rifting–related sedimentary cover, which could be reasonably interpreted to be a back-arc basin. Integrated with these comprehensive geological and geophysical observations across West Junggar, the previous model of West Junggar trench-arc-basin system related to a fossil intra-oceanic subduction during the Late Paleozoic is further renewed. |
| first_indexed | 2024-12-13T12:50:30Z |
| format | Article |
| id | doaj.art-779a022d85f3420bbc83772732f742b5 |
| institution | Directory Open Access Journal |
| issn | 2296-6463 |
| language | English |
| last_indexed | 2024-12-13T12:50:30Z |
| publishDate | 2021-12-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Earth Science |
| spelling | doaj.art-779a022d85f3420bbc83772732f742b52022-12-21T23:45:20ZengFrontiers Media S.A.Frontiers in Earth Science2296-64632021-12-01910.3389/feart.2021.760305760305A Fossil Paleozoic Subduction-Dominated Trench-Arc-Basin System Revealed by Airborne Magnetic-Gravity Imaging in West Junggar, NW ChinaQifang ZhengXi XuWan ZhangYuzhou ZhengYinghui LiuXingtao KuangDaoqing ZhouXuezhong YuBaodi WangA Carboniferous trench-arc-basin system related to oceanic slab subduction has been thoroughly imaged by various geophysical probing approaches and proposed for the formation of West Junggar, Northwest China, located in the southwest of the Central Asian Orogenic Belt. However, debate on the origin of West Junggar still continues. Here, we present an integrated aeronautic magnetic–gravity observation to further identify the trench-arc-basin system and constrain the subduction mode. By deploying an integrated aerial magnetic–gravity survey consisting of 66,000 survey-line kilometers from August 3, 2015 to April 22, 2016, we determine the magnetic and gravitational anomaly across the study region by using geophysical potential-field processing. Our results reveal curial crust-scale variations in magnetic and gravitational structures beneath West Junggar and that a prominent Bouguer gravity high is located between the Darbut and Karamay–Urho faults, likely corresponding to a trapped oceanic slab. Notably, the Tacheng Basin is characterized by high-frequency magnetic signal and gravity highs, as well as the Carboniferous rifting–related sedimentary cover, which could be reasonably interpreted to be a back-arc basin. Integrated with these comprehensive geological and geophysical observations across West Junggar, the previous model of West Junggar trench-arc-basin system related to a fossil intra-oceanic subduction during the Late Paleozoic is further renewed.https://www.frontiersin.org/articles/10.3389/feart.2021.760305/fullWest Junggar basinsubduction-dominated trench-arc-basin systemgeophysical potential field processingmagnetic and gravity structureLate PaleozoicTacheng Basin |
| spellingShingle | Qifang Zheng Xi Xu Wan Zhang Yuzhou Zheng Yinghui Liu Xingtao Kuang Daoqing Zhou Xuezhong Yu Baodi Wang A Fossil Paleozoic Subduction-Dominated Trench-Arc-Basin System Revealed by Airborne Magnetic-Gravity Imaging in West Junggar, NW China Frontiers in Earth Science West Junggar basin subduction-dominated trench-arc-basin system geophysical potential field processing magnetic and gravity structure Late Paleozoic Tacheng Basin |
| title | A Fossil Paleozoic Subduction-Dominated Trench-Arc-Basin System Revealed by Airborne Magnetic-Gravity Imaging in West Junggar, NW China |
| title_full | A Fossil Paleozoic Subduction-Dominated Trench-Arc-Basin System Revealed by Airborne Magnetic-Gravity Imaging in West Junggar, NW China |
| title_fullStr | A Fossil Paleozoic Subduction-Dominated Trench-Arc-Basin System Revealed by Airborne Magnetic-Gravity Imaging in West Junggar, NW China |
| title_full_unstemmed | A Fossil Paleozoic Subduction-Dominated Trench-Arc-Basin System Revealed by Airborne Magnetic-Gravity Imaging in West Junggar, NW China |
| title_short | A Fossil Paleozoic Subduction-Dominated Trench-Arc-Basin System Revealed by Airborne Magnetic-Gravity Imaging in West Junggar, NW China |
| title_sort | fossil paleozoic subduction dominated trench arc basin system revealed by airborne magnetic gravity imaging in west junggar nw china |
| topic | West Junggar basin subduction-dominated trench-arc-basin system geophysical potential field processing magnetic and gravity structure Late Paleozoic Tacheng Basin |
| url | https://www.frontiersin.org/articles/10.3389/feart.2021.760305/full |
| work_keys_str_mv | AT qifangzheng afossilpaleozoicsubductiondominatedtrencharcbasinsystemrevealedbyairbornemagneticgravityimaginginwestjunggarnwchina AT xixu afossilpaleozoicsubductiondominatedtrencharcbasinsystemrevealedbyairbornemagneticgravityimaginginwestjunggarnwchina AT wanzhang afossilpaleozoicsubductiondominatedtrencharcbasinsystemrevealedbyairbornemagneticgravityimaginginwestjunggarnwchina AT yuzhouzheng afossilpaleozoicsubductiondominatedtrencharcbasinsystemrevealedbyairbornemagneticgravityimaginginwestjunggarnwchina AT yinghuiliu afossilpaleozoicsubductiondominatedtrencharcbasinsystemrevealedbyairbornemagneticgravityimaginginwestjunggarnwchina AT xingtaokuang afossilpaleozoicsubductiondominatedtrencharcbasinsystemrevealedbyairbornemagneticgravityimaginginwestjunggarnwchina AT daoqingzhou afossilpaleozoicsubductiondominatedtrencharcbasinsystemrevealedbyairbornemagneticgravityimaginginwestjunggarnwchina AT xuezhongyu afossilpaleozoicsubductiondominatedtrencharcbasinsystemrevealedbyairbornemagneticgravityimaginginwestjunggarnwchina AT baodiwang afossilpaleozoicsubductiondominatedtrencharcbasinsystemrevealedbyairbornemagneticgravityimaginginwestjunggarnwchina AT qifangzheng fossilpaleozoicsubductiondominatedtrencharcbasinsystemrevealedbyairbornemagneticgravityimaginginwestjunggarnwchina AT xixu fossilpaleozoicsubductiondominatedtrencharcbasinsystemrevealedbyairbornemagneticgravityimaginginwestjunggarnwchina AT wanzhang fossilpaleozoicsubductiondominatedtrencharcbasinsystemrevealedbyairbornemagneticgravityimaginginwestjunggarnwchina AT yuzhouzheng fossilpaleozoicsubductiondominatedtrencharcbasinsystemrevealedbyairbornemagneticgravityimaginginwestjunggarnwchina AT yinghuiliu fossilpaleozoicsubductiondominatedtrencharcbasinsystemrevealedbyairbornemagneticgravityimaginginwestjunggarnwchina AT xingtaokuang fossilpaleozoicsubductiondominatedtrencharcbasinsystemrevealedbyairbornemagneticgravityimaginginwestjunggarnwchina AT daoqingzhou fossilpaleozoicsubductiondominatedtrencharcbasinsystemrevealedbyairbornemagneticgravityimaginginwestjunggarnwchina AT xuezhongyu fossilpaleozoicsubductiondominatedtrencharcbasinsystemrevealedbyairbornemagneticgravityimaginginwestjunggarnwchina AT baodiwang fossilpaleozoicsubductiondominatedtrencharcbasinsystemrevealedbyairbornemagneticgravityimaginginwestjunggarnwchina |