Active detachment faulting controls folding and faulting in western Borneo, SE Asia
The origin of active deformation and structural evolution in large areas of Western Borneo has been highly debated, with two contrasting views involving gravitational tectonics and plate tectonics. The scarcity of field data on land has significantly hampered our understanding of the onshore structu...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-06-01
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| Series: | Journal of Asian Earth Sciences: X |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2590056022000548 |
| _version_ | 1797797145598754816 |
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| author | Syaakiirroh Sahari Afroz Ahmad Shah Dayangku Aaisyah Navakanesh Batmanathan Amirul Shahbuddin |
| author_facet | Syaakiirroh Sahari Afroz Ahmad Shah Dayangku Aaisyah Navakanesh Batmanathan Amirul Shahbuddin |
| author_sort | Syaakiirroh Sahari |
| collection | DOAJ |
| description | The origin of active deformation and structural evolution in large areas of Western Borneo has been highly debated, with two contrasting views involving gravitational tectonics and plate tectonics. The scarcity of field data on land has significantly hampered our understanding of the onshore structures and their relationship with those of the offshore regions. The Baram Delta province is one of the best examples in SE Asia, where debates on the origin and evolution of active tectonic versus gravitational tectonic structures are broadly associated with the complexity of faults and folds in Brunei and Sarawak (Malaysia). In this paper, we present the results of the first large-scale satellite-based structural mapping and the detailed outcrop-based structural mapping in Brunei Darussalam. The results of the satellite-based mapping reveal a major ∼NE-SW trending detachment fault in Brunei and adjacent regions, which is termed the Tutoh fault, with numerous associated secondary faults and folds. The fault acts as a detachment structure onto which several NW-SE trending faults ramp and have asymmetrical folds showing an en echelon fold-fault system. The topographic expression and the recent strike-slip faulting event on the Tutoh fault system suggest that the fault remains active, challenging the discourse that gravitational tectonics is the only cause of active deformation in Borneo. |
| first_indexed | 2024-03-13T03:43:45Z |
| format | Article |
| id | doaj.art-985e2b26047f416e83d866f699c35e03 |
| institution | Directory Open Access Journal |
| issn | 2590-0560 |
| language | English |
| last_indexed | 2024-03-13T03:43:45Z |
| publishDate | 2023-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Asian Earth Sciences: X |
| spelling | doaj.art-985e2b26047f416e83d866f699c35e032023-06-23T04:43:54ZengElsevierJournal of Asian Earth Sciences: X2590-05602023-06-019100133Active detachment faulting controls folding and faulting in western Borneo, SE AsiaSyaakiirroh Sahari0Afroz Ahmad Shah1Dayangku Aaisyah2Navakanesh Batmanathan3Amirul Shahbuddin4Universiti Brunei Darussalam, Jalan Tungku Link, Gadong BE1410, Brunei DarussalamUniversiti Brunei Darussalam, Jalan Tungku Link, Gadong BE1410, Brunei Darussalam; Corresponding author.Universiti Brunei Darussalam, Jalan Tungku Link, Gadong BE1410, Brunei DarussalamSoutheast Asia Disaster Prevention Research Initiative, Universiti Kebangsaan Malaysia, MalaysiaDepartment of Petroleum Engineering, Politeknik Brunei, BruneiThe origin of active deformation and structural evolution in large areas of Western Borneo has been highly debated, with two contrasting views involving gravitational tectonics and plate tectonics. The scarcity of field data on land has significantly hampered our understanding of the onshore structures and their relationship with those of the offshore regions. The Baram Delta province is one of the best examples in SE Asia, where debates on the origin and evolution of active tectonic versus gravitational tectonic structures are broadly associated with the complexity of faults and folds in Brunei and Sarawak (Malaysia). In this paper, we present the results of the first large-scale satellite-based structural mapping and the detailed outcrop-based structural mapping in Brunei Darussalam. The results of the satellite-based mapping reveal a major ∼NE-SW trending detachment fault in Brunei and adjacent regions, which is termed the Tutoh fault, with numerous associated secondary faults and folds. The fault acts as a detachment structure onto which several NW-SE trending faults ramp and have asymmetrical folds showing an en echelon fold-fault system. The topographic expression and the recent strike-slip faulting event on the Tutoh fault system suggest that the fault remains active, challenging the discourse that gravitational tectonics is the only cause of active deformation in Borneo.http://www.sciencedirect.com/science/article/pii/S2590056022000548Structural mappingBrunei DarussalamTutongBelaitFaultBaram Delta Province |
| spellingShingle | Syaakiirroh Sahari Afroz Ahmad Shah Dayangku Aaisyah Navakanesh Batmanathan Amirul Shahbuddin Active detachment faulting controls folding and faulting in western Borneo, SE Asia Journal of Asian Earth Sciences: X Structural mapping Brunei Darussalam Tutong Belait Fault Baram Delta Province |
| title | Active detachment faulting controls folding and faulting in western Borneo, SE Asia |
| title_full | Active detachment faulting controls folding and faulting in western Borneo, SE Asia |
| title_fullStr | Active detachment faulting controls folding and faulting in western Borneo, SE Asia |
| title_full_unstemmed | Active detachment faulting controls folding and faulting in western Borneo, SE Asia |
| title_short | Active detachment faulting controls folding and faulting in western Borneo, SE Asia |
| title_sort | active detachment faulting controls folding and faulting in western borneo se asia |
| topic | Structural mapping Brunei Darussalam Tutong Belait Fault Baram Delta Province |
| url | http://www.sciencedirect.com/science/article/pii/S2590056022000548 |
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