Evolution of Arc-Continent Collision in the Southeastern Margin of the South China Sea: Insight From the Isugod Basin in Central-Southern Palawan
文献类型：期刊论文
| 作者 | Chen, Wen-Huang4,5,7; Yan, Yi4,5,7; Carter, Andrew6; Clift, Peter D.2,3; Huang, Chi-Yue10; Yumul Jr, Graciano P.1; Dimalanta, Carla B.9; Gabo-Ratio, Jillian Aira S.9; Zhang, Le7; Wang, Ming-Huei8 |
| 刊名 | TECTONICS
 |
| 出版日期 | 2024-06-01 |
| 卷号 | 43期号:6页码:31 |
| 关键词 | arc-continent collision Palawan microcontinental block ophiolite obduction biostratigraphy provenance syn-collisional sediments |
| ISSN号 | 0278-7407 |
| DOI | 10.1029/2023TC008078 |
| 英文摘要 | The evolution of arc-continent collision between the Palawan microcontinental block and the Cagayan Ridge in the southeastern margin of the South China Sea (SCS) is vital to understand how this collision correlated with seafloor spreading of the SCS. To address the evolution of arc-continent collision, we studied the biostratigraphy and provenance of syn-collisional sediments in the Isugod Basin in central-southern Palawan. Microfossil analysis indicates a Late Miocene age (11.5-5.6 Ma) for the Isugod and Alfonso XIII Formations and rapid subsidence during initiation of the basin which may have been triggered by local extensional collapse of the wedge in response to forearc uplift. Multidisciplinary provenance analysis reveals that the Isugod and Alfonso XIII Formations were derived from the Middle Eocene-lower Oligocene Panas-Pandian Formation on the Palawan wedge and the Late Eocene Central Palawan Ophiolite. These results suggest the emergence of both the orogenic wedge and obducted forearc ophiolite at similar to 11.5 Ma, implying collision onset before similar to 11.5 Ma. The collision initiation in Palawan could be better constrained to similar to 18 Ma, based on the drowning of the Nido carbonate platform in the foreland. Therefore, the gravitational collapse of the Palawan wedge and the subsidence/formation of the Isugod Basin might reflect a significant uplift pulse in the hinterland of the wedge beginning within 13.4-11.5 Ma in the late stage of collision. It indicates that although compression originated from spreading of the SCS had ceased at 16-15 Ma, arc-continent collision in Palawan did not stop and was sustained by compression from the upper plate afterward. The Palawan microcontinental block is a continental fragment separated from the South China margin along with the seafloor spreading of the South China Sea (SCS). It finally collided with the Cagayan Ridge volcanic arc because of southward subduction of the Proto-SCS. Therefore, precisely constraining the evolution of arc-continent collision could help us to understand its association with the ending of the SCS spreading. To constrain the evolution of arc-continent collision, we determined the depositional age and source of syn-collisional sediments in the Isugod Basin in central-southern Palawan. Our results shows that the Isugod Basin sediments were deposited during the Late Miocene (11.5-5.6 Ma) following local gravitational collapse of the Palawan orogenic wedge driven by uplift and oversteepening. Isugod Basin sediments were eroded from both the orogenic wedge and obducted forearc ophiolite that were uplifted and exposed subaerially, indicating collision began before similar to 11.5 Ma. As the onset of collision could be constrained to similar to 18 Ma, we propose a significant uplift pulse in the hinterland of the wedge began at 13.4-11.5 Ma in the late stage of collision. This further indicates that arc-continent collision in Palawan did not stop although compression derived from spreading of the SCS had ceased at 16-15 Ma. Sediments in the Isugod Basin were deposited at 11.5-5.6 Ma following local gravitational collapse of the Palawan wedge driven by uplift The Isugod Basin sediments were supplied by erosion of the Palawan wedge and obducted forearc ophiolite exposed subaerially since similar to 11.5 Ma Onset of Palawan arc-continent collision at similar to 18 Ma followed by a significant uplift pulse in the Palawan wedge beginning within 13.4-11.5 Ma |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001236035000001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/78525]  |
| 专题 | 同位素地球化学国家重点实验室 |
| 通讯作者 | Yan, Yi |
| 作者单位 | 1.Cordillera Explorat Co Inc, Taguig City, Philippines 2.Louisiana State Univ, Dept Geol & Geophys, Baton Rouge, LA USA 3.Univ London Univ Coll, Dept Earth Sci, London, England 4.CAS Ctr Excellence Deep Earth Sci, Guangzhou, Peoples R China 5.Chinese Acad Sci, Guangzhou Inst Geochem, Key Lab Ocean & Marginal Sea Geol, Guangzhou, Peoples R China 6.Birkbeck Univ London, Dept Earth & Planetary Sci, London, England 7.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Isotope Geochem, Guangzhou, Peoples R China 8.CPC Corp, Explorat & Dev Res Inst, Miaoli, Taiwan 9.Univ Philippines Diliman, Natl Inst Geol Sci, Tecton & Geodynam Acad Grp, Rushurgent Working Grp,Coll Sci, Quezon City, Philippines 10.Tongji Univ, Sch Ocean & Earth Sci, Shanghai, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Wen-Huang,Yan, Yi,Carter, Andrew,et al. Evolution of Arc-Continent Collision in the Southeastern Margin of the South China Sea: Insight From the Isugod Basin in Central-Southern Palawan[J]. TECTONICS,2024,43(6):31. |
| APA | Chen, Wen-Huang.,Yan, Yi.,Carter, Andrew.,Clift, Peter D..,Huang, Chi-Yue.,...&Zhang, Xin-Chang.(2024).Evolution of Arc-Continent Collision in the Southeastern Margin of the South China Sea: Insight From the Isugod Basin in Central-Southern Palawan.TECTONICS,43(6),31. |
| MLA | Chen, Wen-Huang,et al."Evolution of Arc-Continent Collision in the Southeastern Margin of the South China Sea: Insight From the Isugod Basin in Central-Southern Palawan".TECTONICS 43.6(2024):31. |
入库方式： OAI收割
来源：广州地球化学研究所
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