Tectonic Controls on Surface Erosion Rates in the Longmen Shan, Eastern Tibet
The Longmen Shan range, located on the eastern margin of the Tibetan Plateau, is characterized by steep topography and a shortening rate of
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| Veröffentlicht in: | Tectonics (Washington, D.C.) D.C.), 2021-03, Vol.40 (3), p.n/a |
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| creator | Wang, Wei Godard, Vincent Liu‐Zeng, Jing Zhang, Jinyu Li, Zhigang Xu, Sheng Yao, Wenqian Yuan, Zhaode Aumaître, Georges Bourlès, Didier L. Keddadouche, Karim |
| description | The Longmen Shan range, located on the eastern margin of the Tibetan Plateau, is characterized by steep topography and a shortening rate of |
| doi_str_mv | 10.1029/2020TC006445 |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_hal_p</sourceid><recordid>TN_cdi_hal_primary_oai_HAL_hal_03172550v1</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>2509214141</sourcerecordid><originalsourceid>FETCH-LOGICAL-a4454-e957aba68bce56667312e1d4e345eae4214c7905d9cbbb5fd6381ea21d97fbf73</originalsourceid><addsrcrecordid>eNp9kN9LwzAQx4MoOH-8-QcEfBJWTdKkWR5HqU6YCFqfQ9peXUeXzKRT9t-bURGf5OCOOz7c93uH0BUlt5QwdccII2VOSMa5OEITqjhPVMzHaEKYnCWSE3mKzkJYE0K5yLIJeiqhHpztapw7O3jXB-wsft351tSAC-9CF_sXM0DAncXDCvDS2fcNRGhl7BQXJgzgLS67CoYLdNKaPsDlTz1Hb_dFmS-S5fPDYz5fJiY64wkoIU1lsllVQ3SRyZQyoA2HlAswwBnltVRENKquqkq0TZbOKBhGGyXbqpXpOboZ965Mr7e-2xi_1850ejFf6sOMpFQyIcgnjez1yG69-9hBGPTa7byN9jQTREWtGJGajlQdTw4e2t-1lOjDc_Xf50Y8HfGvrof9v6wui7yMKoqn3yFxeMY</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>2509214141</pqid></control><display><type>article</type><title>Tectonic Controls on Surface Erosion Rates in the Longmen Shan, Eastern Tibet</title><source>Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals</source><source>Access via Wiley Online Library</source><source>Wiley-Blackwell AGU Digital Library</source><source>Wiley Online Library (Open Access Collection)</source><creator>Wang, Wei ; Godard, Vincent ; Liu‐Zeng, Jing ; Zhang, Jinyu ; Li, Zhigang ; Xu, Sheng ; Yao, Wenqian ; Yuan, Zhaode ; Aumaître, Georges ; Bourlès, Didier L. ; Keddadouche, Karim</creator><creatorcontrib>Wang, Wei ; Godard, Vincent ; Liu‐Zeng, Jing ; Zhang, Jinyu ; Li, Zhigang ; Xu, Sheng ; Yao, Wenqian ; Yuan, Zhaode ; Aumaître, Georges ; Bourlès, Didier L. ; Keddadouche, Karim</creatorcontrib><description>The Longmen Shan range, located on the eastern margin of the Tibetan Plateau, is characterized by steep topography and a shortening rate of <3 mm/yr. This peculiar configuration is a source of controversy and questions about the topographic evolution and dynamics of this orogenic plateau margin. Investigating the variations in surface denudation over different spatial and temporal scales is important for a better understanding of topographic evolution, but there is still a lack of erosion‐rate data averaged over millennial timescales along the frontal range of the Longmen Shan, especially in its southern part. We present 25 new catchment‐wide denudation rates derived from 10Be concentrations in river sediments across the southern Longmen Shan. Our results show that average denudation rates increase from <0.15 mm/yr near Ya'an, located in the Sichuan Basin, northwestward to >0.50 mm/yr inside the southern Longmen Shan. The denudation rates correlate with slope gradient, relief, channel steepness, and specific stream power but exhibit a fair degree of scattering at high values. In combination with previous 10Be and low‐temperature thermochronology analyses, we found the denudation rates over kyr‐ to Myr‐timescales to be roughly consistent across the southern Longmen Shan, suggesting this part of the range is close to an exhumational steady state. In terms of spatial distribution, high rates of exhumation and denudation are localized in the hanging walls of major thrust faults, highlighting the role of tectonic structures in regulating the pattern of denudation and topography across the Longmen Shan. Our results favor the “brittle crustal shortening” model in which rock uplift pattern across the Longmen Shan is largely controlled by upper crustal shortening. Along‐strike variations in the distribution of denudation rates and topography can probably be attributed to segmentation of subsurface fault structures.
Key Points
10Be‐derived catchment‐wide denudation rates are positively correlated with topographic indices in the southern Longmen Shan
Erosion rates are consistent over short‐ and long‐term timescales across the Longmen Shan, suggesting an exhumational steady state
Rock uplift pattern and topographic evolution across the Longmen Shan have been largely controlled by upper crustal shortening and fault geometry</description><identifier>ISSN: 0278-7407</identifier><identifier>EISSN: 1944-9194</identifier><identifier>DOI: 10.1029/2020TC006445</identifier><language>eng</language><publisher>Washington: Blackwell Publishing Ltd</publisher><subject>active fault ; Beryllium 10 ; Catchment area ; Crustal shortening ; Denudation ; denudation rate ; Distribution ; Earth Sciences ; Eastern Tibetan Plateau ; Erosion control ; Erosion rates ; Evolution ; Fluvial sediments ; Geochemistry ; Geomorphology ; Longmen Shan ; Mountains ; River sediments ; Sciences of the Universe ; Spatial distribution ; tectonic ; Tectonics ; Thrust faults ; Topography ; Uplift</subject><ispartof>Tectonics (Washington, D.C.), 2021-03, Vol.40 (3), p.n/a</ispartof><rights>2021. American Geophysical Union. All Rights Reserved.</rights><rights>Distributed under a Creative Commons Attribution 4.0 International License</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a4454-e957aba68bce56667312e1d4e345eae4214c7905d9cbbb5fd6381ea21d97fbf73</citedby><cites>FETCH-LOGICAL-a4454-e957aba68bce56667312e1d4e345eae4214c7905d9cbbb5fd6381ea21d97fbf73</cites><orcidid>0000-0003-3227-4885 ; 0000-0001-5991-6126 ; 0000-0003-0394-9345 ; 0000-0002-7503-2467 ; 0000-0003-0143-5893 ; 0000-0001-6728-0391 ; 0000-0003-0469-4938</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1029%2F2020TC006445$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1029%2F2020TC006445$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>230,314,780,784,885,1417,1433,11514,27924,27925,45574,45575,46409,46468,46833,46892</link.rule.ids><backlink>$$Uhttps://amu.hal.science/hal-03172550$$DView record in HAL$$Hfree_for_read</backlink></links><search><creatorcontrib>Wang, Wei</creatorcontrib><creatorcontrib>Godard, Vincent</creatorcontrib><creatorcontrib>Liu‐Zeng, Jing</creatorcontrib><creatorcontrib>Zhang, Jinyu</creatorcontrib><creatorcontrib>Li, Zhigang</creatorcontrib><creatorcontrib>Xu, Sheng</creatorcontrib><creatorcontrib>Yao, Wenqian</creatorcontrib><creatorcontrib>Yuan, Zhaode</creatorcontrib><creatorcontrib>Aumaître, Georges</creatorcontrib><creatorcontrib>Bourlès, Didier L.</creatorcontrib><creatorcontrib>Keddadouche, Karim</creatorcontrib><title>Tectonic Controls on Surface Erosion Rates in the Longmen Shan, Eastern Tibet</title><title>Tectonics (Washington, D.C.)</title><description>The Longmen Shan range, located on the eastern margin of the Tibetan Plateau, is characterized by steep topography and a shortening rate of <3 mm/yr. This peculiar configuration is a source of controversy and questions about the topographic evolution and dynamics of this orogenic plateau margin. Investigating the variations in surface denudation over different spatial and temporal scales is important for a better understanding of topographic evolution, but there is still a lack of erosion‐rate data averaged over millennial timescales along the frontal range of the Longmen Shan, especially in its southern part. We present 25 new catchment‐wide denudation rates derived from 10Be concentrations in river sediments across the southern Longmen Shan. Our results show that average denudation rates increase from <0.15 mm/yr near Ya'an, located in the Sichuan Basin, northwestward to >0.50 mm/yr inside the southern Longmen Shan. The denudation rates correlate with slope gradient, relief, channel steepness, and specific stream power but exhibit a fair degree of scattering at high values. In combination with previous 10Be and low‐temperature thermochronology analyses, we found the denudation rates over kyr‐ to Myr‐timescales to be roughly consistent across the southern Longmen Shan, suggesting this part of the range is close to an exhumational steady state. In terms of spatial distribution, high rates of exhumation and denudation are localized in the hanging walls of major thrust faults, highlighting the role of tectonic structures in regulating the pattern of denudation and topography across the Longmen Shan. Our results favor the “brittle crustal shortening” model in which rock uplift pattern across the Longmen Shan is largely controlled by upper crustal shortening. Along‐strike variations in the distribution of denudation rates and topography can probably be attributed to segmentation of subsurface fault structures.
Key Points
10Be‐derived catchment‐wide denudation rates are positively correlated with topographic indices in the southern Longmen Shan
Erosion rates are consistent over short‐ and long‐term timescales across the Longmen Shan, suggesting an exhumational steady state
Rock uplift pattern and topographic evolution across the Longmen Shan have been largely controlled by upper crustal shortening and fault geometry</description><subject>active fault</subject><subject>Beryllium 10</subject><subject>Catchment area</subject><subject>Crustal shortening</subject><subject>Denudation</subject><subject>denudation rate</subject><subject>Distribution</subject><subject>Earth Sciences</subject><subject>Eastern Tibetan Plateau</subject><subject>Erosion control</subject><subject>Erosion rates</subject><subject>Evolution</subject><subject>Fluvial sediments</subject><subject>Geochemistry</subject><subject>Geomorphology</subject><subject>Longmen Shan</subject><subject>Mountains</subject><subject>River sediments</subject><subject>Sciences of the Universe</subject><subject>Spatial distribution</subject><subject>tectonic</subject><subject>Tectonics</subject><subject>Thrust faults</subject><subject>Topography</subject><subject>Uplift</subject><issn>0278-7407</issn><issn>1944-9194</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><recordid>eNp9kN9LwzAQx4MoOH-8-QcEfBJWTdKkWR5HqU6YCFqfQ9peXUeXzKRT9t-bURGf5OCOOz7c93uH0BUlt5QwdccII2VOSMa5OEITqjhPVMzHaEKYnCWSE3mKzkJYE0K5yLIJeiqhHpztapw7O3jXB-wsft351tSAC-9CF_sXM0DAncXDCvDS2fcNRGhl7BQXJgzgLS67CoYLdNKaPsDlTz1Hb_dFmS-S5fPDYz5fJiY64wkoIU1lsllVQ3SRyZQyoA2HlAswwBnltVRENKquqkq0TZbOKBhGGyXbqpXpOboZ965Mr7e-2xi_1850ejFf6sOMpFQyIcgnjez1yG69-9hBGPTa7byN9jQTREWtGJGajlQdTw4e2t-1lOjDc_Xf50Y8HfGvrof9v6wui7yMKoqn3yFxeMY</recordid><startdate>202103</startdate><enddate>202103</enddate><creator>Wang, Wei</creator><creator>Godard, Vincent</creator><creator>Liu‐Zeng, Jing</creator><creator>Zhang, Jinyu</creator><creator>Li, Zhigang</creator><creator>Xu, Sheng</creator><creator>Yao, Wenqian</creator><creator>Yuan, Zhaode</creator><creator>Aumaître, Georges</creator><creator>Bourlès, Didier L.</creator><creator>Keddadouche, Karim</creator><general>Blackwell Publishing Ltd</general><general>American Geophysical Union (AGU)</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7TG</scope><scope>7TN</scope><scope>F1W</scope><scope>H96</scope><scope>KL.</scope><scope>L.G</scope><scope>1XC</scope><scope>VOOES</scope><orcidid>https://orcid.org/0000-0003-3227-4885</orcidid><orcidid>https://orcid.org/0000-0001-5991-6126</orcidid><orcidid>https://orcid.org/0000-0003-0394-9345</orcidid><orcidid>https://orcid.org/0000-0002-7503-2467</orcidid><orcidid>https://orcid.org/0000-0003-0143-5893</orcidid><orcidid>https://orcid.org/0000-0001-6728-0391</orcidid><orcidid>https://orcid.org/0000-0003-0469-4938</orcidid></search><sort><creationdate>202103</creationdate><title>Tectonic Controls on Surface Erosion Rates in the Longmen Shan, Eastern Tibet</title><author>Wang, Wei ; Godard, Vincent ; Liu‐Zeng, Jing ; Zhang, Jinyu ; Li, Zhigang ; Xu, Sheng ; Yao, Wenqian ; Yuan, Zhaode ; Aumaître, Georges ; Bourlès, Didier L. ; Keddadouche, Karim</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a4454-e957aba68bce56667312e1d4e345eae4214c7905d9cbbb5fd6381ea21d97fbf73</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2021</creationdate><topic>active fault</topic><topic>Beryllium 10</topic><topic>Catchment area</topic><topic>Crustal shortening</topic><topic>Denudation</topic><topic>denudation rate</topic><topic>Distribution</topic><topic>Earth Sciences</topic><topic>Eastern Tibetan Plateau</topic><topic>Erosion control</topic><topic>Erosion rates</topic><topic>Evolution</topic><topic>Fluvial sediments</topic><topic>Geochemistry</topic><topic>Geomorphology</topic><topic>Longmen Shan</topic><topic>Mountains</topic><topic>River sediments</topic><topic>Sciences of the Universe</topic><topic>Spatial distribution</topic><topic>tectonic</topic><topic>Tectonics</topic><topic>Thrust faults</topic><topic>Topography</topic><topic>Uplift</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Wang, Wei</creatorcontrib><creatorcontrib>Godard, Vincent</creatorcontrib><creatorcontrib>Liu‐Zeng, Jing</creatorcontrib><creatorcontrib>Zhang, Jinyu</creatorcontrib><creatorcontrib>Li, Zhigang</creatorcontrib><creatorcontrib>Xu, Sheng</creatorcontrib><creatorcontrib>Yao, Wenqian</creatorcontrib><creatorcontrib>Yuan, Zhaode</creatorcontrib><creatorcontrib>Aumaître, Georges</creatorcontrib><creatorcontrib>Bourlès, Didier L.</creatorcontrib><creatorcontrib>Keddadouche, Karim</creatorcontrib><collection>CrossRef</collection><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>Oceanic Abstracts</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>Meteorological & Geoastrophysical Abstracts - Academic</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>Hyper Article en Ligne (HAL)</collection><collection>Hyper Article en Ligne (HAL) (Open Access)</collection><jtitle>Tectonics (Washington, D.C.)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Wang, Wei</au><au>Godard, Vincent</au><au>Liu‐Zeng, Jing</au><au>Zhang, Jinyu</au><au>Li, Zhigang</au><au>Xu, Sheng</au><au>Yao, Wenqian</au><au>Yuan, Zhaode</au><au>Aumaître, Georges</au><au>Bourlès, Didier L.</au><au>Keddadouche, Karim</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Tectonic Controls on Surface Erosion Rates in the Longmen Shan, Eastern Tibet</atitle><jtitle>Tectonics (Washington, D.C.)</jtitle><date>2021-03</date><risdate>2021</risdate><volume>40</volume><issue>3</issue><epage>n/a</epage><issn>0278-7407</issn><eissn>1944-9194</eissn><abstract>The Longmen Shan range, located on the eastern margin of the Tibetan Plateau, is characterized by steep topography and a shortening rate of <3 mm/yr. This peculiar configuration is a source of controversy and questions about the topographic evolution and dynamics of this orogenic plateau margin. Investigating the variations in surface denudation over different spatial and temporal scales is important for a better understanding of topographic evolution, but there is still a lack of erosion‐rate data averaged over millennial timescales along the frontal range of the Longmen Shan, especially in its southern part. We present 25 new catchment‐wide denudation rates derived from 10Be concentrations in river sediments across the southern Longmen Shan. Our results show that average denudation rates increase from <0.15 mm/yr near Ya'an, located in the Sichuan Basin, northwestward to >0.50 mm/yr inside the southern Longmen Shan. The denudation rates correlate with slope gradient, relief, channel steepness, and specific stream power but exhibit a fair degree of scattering at high values. In combination with previous 10Be and low‐temperature thermochronology analyses, we found the denudation rates over kyr‐ to Myr‐timescales to be roughly consistent across the southern Longmen Shan, suggesting this part of the range is close to an exhumational steady state. In terms of spatial distribution, high rates of exhumation and denudation are localized in the hanging walls of major thrust faults, highlighting the role of tectonic structures in regulating the pattern of denudation and topography across the Longmen Shan. Our results favor the “brittle crustal shortening” model in which rock uplift pattern across the Longmen Shan is largely controlled by upper crustal shortening. Along‐strike variations in the distribution of denudation rates and topography can probably be attributed to segmentation of subsurface fault structures.
Key Points
10Be‐derived catchment‐wide denudation rates are positively correlated with topographic indices in the southern Longmen Shan
Erosion rates are consistent over short‐ and long‐term timescales across the Longmen Shan, suggesting an exhumational steady state
Rock uplift pattern and topographic evolution across the Longmen Shan have been largely controlled by upper crustal shortening and fault geometry</abstract><cop>Washington</cop><pub>Blackwell Publishing Ltd</pub><doi>10.1029/2020TC006445</doi><tpages>21</tpages><orcidid>https://orcid.org/0000-0003-3227-4885</orcidid><orcidid>https://orcid.org/0000-0001-5991-6126</orcidid><orcidid>https://orcid.org/0000-0003-0394-9345</orcidid><orcidid>https://orcid.org/0000-0002-7503-2467</orcidid><orcidid>https://orcid.org/0000-0003-0143-5893</orcidid><orcidid>https://orcid.org/0000-0001-6728-0391</orcidid><orcidid>https://orcid.org/0000-0003-0469-4938</orcidid><oa>free_for_read</oa></addata></record> |
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| source | Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; Access via Wiley Online Library; Wiley-Blackwell AGU Digital Library; Wiley Online Library (Open Access Collection) |
| subjects | active fault Beryllium 10 Catchment area Crustal shortening Denudation denudation rate Distribution Earth Sciences Eastern Tibetan Plateau Erosion control Erosion rates Evolution Fluvial sediments Geochemistry Geomorphology Longmen Shan Mountains River sediments Sciences of the Universe Spatial distribution tectonic Tectonics Thrust faults Topography Uplift |
| title | Tectonic Controls on Surface Erosion Rates in the Longmen Shan, Eastern Tibet |
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