Tectonic Significances of the Geomorphic Evolution in the Southern Alashan Block to the Outward Expansion of the Northeastern Tibetan Plateau
Fluvial landscapes are a result of lithospheric tectonic movement, climate evolution and surface processes. Existing evidence proves that regional tectonic deformation can be reflected by the evolution of fluvial landforms. The southern Alashan Block lies the closest to the northeastern Tibetan Plat...
| Main Authors: | , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-12-01
|
| Series: | Remote Sensing |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2072-4292/14/24/6269 |
| _version_ | 1797455458273853440 |
|---|---|
| author | Tingting Ji Wenjun Zheng Jingjun Yang Dongli Zhang Shumin Liang Yige Li Ting Liu Haoyu Zhou Changhuan Feng |
| author_facet | Tingting Ji Wenjun Zheng Jingjun Yang Dongli Zhang Shumin Liang Yige Li Ting Liu Haoyu Zhou Changhuan Feng |
| author_sort | Tingting Ji |
| collection | DOAJ |
| description | Fluvial landscapes are a result of lithospheric tectonic movement, climate evolution and surface processes. Existing evidence proves that regional tectonic deformation can be reflected by the evolution of fluvial landforms. The southern Alashan Block lies the closest to the northeastern Tibetan Plateau and has become the latest plateau outward expansion boundary. Yabrai Shan is located at the intersection of the Tibetan Plateau, Alashan and Ordos Blocks, thereby recording the evolution of the surface processes and tectonic activities in the northeastern Tibetan Plateau and its surrounding regions. Herein, we conducted the quantitative landform analysis and field investigations of Yabrai Shan, and the spatiotemporal distribution of geomorphological parameters indicated that Yabrai Shan is in the mature stage of geomorphological evolution controlled by tectonic activities of the Yabrai range-front fault. Based on the paleochannel reconstruction model and previous research on fault activity, two tectonic acceleration events were identified, with estimated geomorphic response times of 0.15–1.10 Ma and 1.42–2.92 Ma. Different distribution characteristics of two-phase knickpoints are caused by the change of tectonic stress in this region, revealing that the late knickpoints are the result of tectonic acceleration under the influence of the northeast expansion of the Tibetan Plateau. The transformation of Yabrai Shan from the original extensional environment affected by the Ordos Block to the compressional environment affected by the northeast expansion of the Tibetan Plateau occurred after 1.10 Ma. |
| first_indexed | 2024-03-09T15:54:39Z |
| format | Article |
| id | doaj.art-95934f4da4c54ff7abd35ca76da8c1bf |
| institution | Directory Open Access Journal |
| issn | 2072-4292 |
| language | English |
| last_indexed | 2024-03-09T15:54:39Z |
| publishDate | 2022-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Remote Sensing |
| spelling | doaj.art-95934f4da4c54ff7abd35ca76da8c1bf2023-11-24T17:46:54ZengMDPI AGRemote Sensing2072-42922022-12-011424626910.3390/rs14246269Tectonic Significances of the Geomorphic Evolution in the Southern Alashan Block to the Outward Expansion of the Northeastern Tibetan PlateauTingting Ji0Wenjun Zheng1Jingjun Yang2Dongli Zhang3Shumin Liang4Yige Li5Ting Liu6Haoyu Zhou7Changhuan Feng8Guangdong Provincial Key Laboratory of Geodynamics and Geohazards, School of Earth Sciences and Engineering, Sun Yat-sen University, Guangzhou 510275, ChinaGuangdong Provincial Key Laboratory of Geodynamics and Geohazards, School of Earth Sciences and Engineering, Sun Yat-sen University, Guangzhou 510275, ChinaGuangdong Provincial Key Laboratory of Geodynamics and Geohazards, School of Earth Sciences and Engineering, Sun Yat-sen University, Guangzhou 510275, ChinaGuangdong Provincial Key Laboratory of Geodynamics and Geohazards, School of Earth Sciences and Engineering, Sun Yat-sen University, Guangzhou 510275, ChinaGuangdong Provincial Key Laboratory of Geodynamics and Geohazards, School of Earth Sciences and Engineering, Sun Yat-sen University, Guangzhou 510275, ChinaGuangdong Provincial Key Laboratory of Geodynamics and Geohazards, School of Earth Sciences and Engineering, Sun Yat-sen University, Guangzhou 510275, ChinaGuangdong Provincial Key Laboratory of Geodynamics and Geohazards, School of Earth Sciences and Engineering, Sun Yat-sen University, Guangzhou 510275, ChinaGuangdong Provincial Key Laboratory of Geodynamics and Geohazards, School of Earth Sciences and Engineering, Sun Yat-sen University, Guangzhou 510275, ChinaGuangdong Provincial Key Laboratory of Geodynamics and Geohazards, School of Earth Sciences and Engineering, Sun Yat-sen University, Guangzhou 510275, ChinaFluvial landscapes are a result of lithospheric tectonic movement, climate evolution and surface processes. Existing evidence proves that regional tectonic deformation can be reflected by the evolution of fluvial landforms. The southern Alashan Block lies the closest to the northeastern Tibetan Plateau and has become the latest plateau outward expansion boundary. Yabrai Shan is located at the intersection of the Tibetan Plateau, Alashan and Ordos Blocks, thereby recording the evolution of the surface processes and tectonic activities in the northeastern Tibetan Plateau and its surrounding regions. Herein, we conducted the quantitative landform analysis and field investigations of Yabrai Shan, and the spatiotemporal distribution of geomorphological parameters indicated that Yabrai Shan is in the mature stage of geomorphological evolution controlled by tectonic activities of the Yabrai range-front fault. Based on the paleochannel reconstruction model and previous research on fault activity, two tectonic acceleration events were identified, with estimated geomorphic response times of 0.15–1.10 Ma and 1.42–2.92 Ma. Different distribution characteristics of two-phase knickpoints are caused by the change of tectonic stress in this region, revealing that the late knickpoints are the result of tectonic acceleration under the influence of the northeast expansion of the Tibetan Plateau. The transformation of Yabrai Shan from the original extensional environment affected by the Ordos Block to the compressional environment affected by the northeast expansion of the Tibetan Plateau occurred after 1.10 Ma.https://www.mdpi.com/2072-4292/14/24/6269southern Alashan blockfluvial landformstwo-phase uplift of Yabrai Shanoutward expansion of Tibetan PlateauLate Cenozoic |
| spellingShingle | Tingting Ji Wenjun Zheng Jingjun Yang Dongli Zhang Shumin Liang Yige Li Ting Liu Haoyu Zhou Changhuan Feng Tectonic Significances of the Geomorphic Evolution in the Southern Alashan Block to the Outward Expansion of the Northeastern Tibetan Plateau Remote Sensing southern Alashan block fluvial landforms two-phase uplift of Yabrai Shan outward expansion of Tibetan Plateau Late Cenozoic |
| title | Tectonic Significances of the Geomorphic Evolution in the Southern Alashan Block to the Outward Expansion of the Northeastern Tibetan Plateau |
| title_full | Tectonic Significances of the Geomorphic Evolution in the Southern Alashan Block to the Outward Expansion of the Northeastern Tibetan Plateau |
| title_fullStr | Tectonic Significances of the Geomorphic Evolution in the Southern Alashan Block to the Outward Expansion of the Northeastern Tibetan Plateau |
| title_full_unstemmed | Tectonic Significances of the Geomorphic Evolution in the Southern Alashan Block to the Outward Expansion of the Northeastern Tibetan Plateau |
| title_short | Tectonic Significances of the Geomorphic Evolution in the Southern Alashan Block to the Outward Expansion of the Northeastern Tibetan Plateau |
| title_sort | tectonic significances of the geomorphic evolution in the southern alashan block to the outward expansion of the northeastern tibetan plateau |
| topic | southern Alashan block fluvial landforms two-phase uplift of Yabrai Shan outward expansion of Tibetan Plateau Late Cenozoic |
| url | https://www.mdpi.com/2072-4292/14/24/6269 |
| work_keys_str_mv | AT tingtingji tectonicsignificancesofthegeomorphicevolutioninthesouthernalashanblocktotheoutwardexpansionofthenortheasterntibetanplateau AT wenjunzheng tectonicsignificancesofthegeomorphicevolutioninthesouthernalashanblocktotheoutwardexpansionofthenortheasterntibetanplateau AT jingjunyang tectonicsignificancesofthegeomorphicevolutioninthesouthernalashanblocktotheoutwardexpansionofthenortheasterntibetanplateau AT donglizhang tectonicsignificancesofthegeomorphicevolutioninthesouthernalashanblocktotheoutwardexpansionofthenortheasterntibetanplateau AT shuminliang tectonicsignificancesofthegeomorphicevolutioninthesouthernalashanblocktotheoutwardexpansionofthenortheasterntibetanplateau AT yigeli tectonicsignificancesofthegeomorphicevolutioninthesouthernalashanblocktotheoutwardexpansionofthenortheasterntibetanplateau AT tingliu tectonicsignificancesofthegeomorphicevolutioninthesouthernalashanblocktotheoutwardexpansionofthenortheasterntibetanplateau AT haoyuzhou tectonicsignificancesofthegeomorphicevolutioninthesouthernalashanblocktotheoutwardexpansionofthenortheasterntibetanplateau AT changhuanfeng tectonicsignificancesofthegeomorphicevolutioninthesouthernalashanblocktotheoutwardexpansionofthenortheasterntibetanplateau |