Plume‐Induced Subduction Initiation: Single‐Slab or Multi‐Slab Subduction?
Abstract Initiation of subduction following the impingement of a hot buoyant mantle plume is one of the few scenarios that allow breaking the lithosphere and recycling a stagnant lid without requiring any preexisting weak zones. Here, we investigate factors controlling the number and shape of retrea...
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Gespeichert in:
| Autor*in: |
Marzieh Baes [verfasserIn] Stephan Sobolev [verfasserIn] Taras Gerya [verfasserIn] Sascha Brune [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2020 |
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| Schlagwörter: |
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| Übergeordnetes Werk: |
In: Geochemistry, Geophysics, Geosystems ; 21(2020), 2, Seite n/a-n/a volume:21 ; year:2020 ; number:2 ; pages:n/a-n/a |
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| Links: |
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| DOI / URN: |
10.1029/2019GC008663 |
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DOAJ095381880 |
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| 520 | |a Abstract Initiation of subduction following the impingement of a hot buoyant mantle plume is one of the few scenarios that allow breaking the lithosphere and recycling a stagnant lid without requiring any preexisting weak zones. Here, we investigate factors controlling the number and shape of retreating subducting slabs formed by plume‐lithosphere interaction. Using 3‐D thermomechanical models we show that the deformation regime, which defines formation of single‐slab or multi‐slab subduction, depends on several parameters such as age of oceanic lithosphere, thickness of the crust and large‐scale lithospheric extension rate. Our model results indicate that on present‐day Earth multi‐slab plume‐induced subduction is initiated only if the oceanic lithosphere is relatively young (<30–40 Myr, but <10 Myr), and the crust has a typical thickness of 8 km. In turn, development of single‐slab subduction is facilitated by older lithosphere and pre‐imposed extensional stresses. In early Earth, plume‐lithosphere interaction could have led to formation of either episodic short‐lived circular subduction when the oceanic lithosphere was young or to multi‐slab subduction when the lithosphere was old. | ||
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10.1029/2019GC008663 doi (DE-627)DOAJ095381880 (DE-599)DOAJ28e60e7783ab499589cbfea98131b25f DE-627 ger DE-627 rakwb eng QC801-809 QE1-996.5 Marzieh Baes verfasserin aut Plume‐Induced Subduction Initiation: Single‐Slab or Multi‐Slab Subduction? 2020 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract Initiation of subduction following the impingement of a hot buoyant mantle plume is one of the few scenarios that allow breaking the lithosphere and recycling a stagnant lid without requiring any preexisting weak zones. Here, we investigate factors controlling the number and shape of retreating subducting slabs formed by plume‐lithosphere interaction. Using 3‐D thermomechanical models we show that the deformation regime, which defines formation of single‐slab or multi‐slab subduction, depends on several parameters such as age of oceanic lithosphere, thickness of the crust and large‐scale lithospheric extension rate. Our model results indicate that on present‐day Earth multi‐slab plume‐induced subduction is initiated only if the oceanic lithosphere is relatively young (<30–40 Myr, but <10 Myr), and the crust has a typical thickness of 8 km. In turn, development of single‐slab subduction is facilitated by older lithosphere and pre‐imposed extensional stresses. In early Earth, plume‐lithosphere interaction could have led to formation of either episodic short‐lived circular subduction when the oceanic lithosphere was young or to multi‐slab subduction when the lithosphere was old. subduction zone plume numerical model singleslab multi‐slab Geophysics. Cosmic physics Geology Stephan Sobolev verfasserin aut Taras Gerya verfasserin aut Sascha Brune verfasserin aut In Geochemistry, Geophysics, Geosystems 21(2020), 2, Seite n/a-n/a volume:21 year:2020 number:2 pages:n/a-n/a https://doi.org/10.1029/2019GC008663 kostenfrei https://doaj.org/article/28e60e7783ab499589cbfea98131b25f kostenfrei https://doi.org/10.1029/2019GC008663 kostenfrei https://doaj.org/toc/1525-2027 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ AR 21 2020 2 n/a-n/a |
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10.1029/2019GC008663 doi (DE-627)DOAJ095381880 (DE-599)DOAJ28e60e7783ab499589cbfea98131b25f DE-627 ger DE-627 rakwb eng QC801-809 QE1-996.5 Marzieh Baes verfasserin aut Plume‐Induced Subduction Initiation: Single‐Slab or Multi‐Slab Subduction? 2020 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract Initiation of subduction following the impingement of a hot buoyant mantle plume is one of the few scenarios that allow breaking the lithosphere and recycling a stagnant lid without requiring any preexisting weak zones. Here, we investigate factors controlling the number and shape of retreating subducting slabs formed by plume‐lithosphere interaction. Using 3‐D thermomechanical models we show that the deformation regime, which defines formation of single‐slab or multi‐slab subduction, depends on several parameters such as age of oceanic lithosphere, thickness of the crust and large‐scale lithospheric extension rate. Our model results indicate that on present‐day Earth multi‐slab plume‐induced subduction is initiated only if the oceanic lithosphere is relatively young (<30–40 Myr, but <10 Myr), and the crust has a typical thickness of 8 km. In turn, development of single‐slab subduction is facilitated by older lithosphere and pre‐imposed extensional stresses. In early Earth, plume‐lithosphere interaction could have led to formation of either episodic short‐lived circular subduction when the oceanic lithosphere was young or to multi‐slab subduction when the lithosphere was old. subduction zone plume numerical model singleslab multi‐slab Geophysics. Cosmic physics Geology Stephan Sobolev verfasserin aut Taras Gerya verfasserin aut Sascha Brune verfasserin aut In Geochemistry, Geophysics, Geosystems 21(2020), 2, Seite n/a-n/a volume:21 year:2020 number:2 pages:n/a-n/a https://doi.org/10.1029/2019GC008663 kostenfrei https://doaj.org/article/28e60e7783ab499589cbfea98131b25f kostenfrei https://doi.org/10.1029/2019GC008663 kostenfrei https://doaj.org/toc/1525-2027 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ AR 21 2020 2 n/a-n/a |
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Plume‐Induced Subduction Initiation: Single‐Slab or Multi‐Slab Subduction? |
| abstract |
Abstract Initiation of subduction following the impingement of a hot buoyant mantle plume is one of the few scenarios that allow breaking the lithosphere and recycling a stagnant lid without requiring any preexisting weak zones. Here, we investigate factors controlling the number and shape of retreating subducting slabs formed by plume‐lithosphere interaction. Using 3‐D thermomechanical models we show that the deformation regime, which defines formation of single‐slab or multi‐slab subduction, depends on several parameters such as age of oceanic lithosphere, thickness of the crust and large‐scale lithospheric extension rate. Our model results indicate that on present‐day Earth multi‐slab plume‐induced subduction is initiated only if the oceanic lithosphere is relatively young (<30–40 Myr, but <10 Myr), and the crust has a typical thickness of 8 km. In turn, development of single‐slab subduction is facilitated by older lithosphere and pre‐imposed extensional stresses. In early Earth, plume‐lithosphere interaction could have led to formation of either episodic short‐lived circular subduction when the oceanic lithosphere was young or to multi‐slab subduction when the lithosphere was old. |
| abstractGer |
Abstract Initiation of subduction following the impingement of a hot buoyant mantle plume is one of the few scenarios that allow breaking the lithosphere and recycling a stagnant lid without requiring any preexisting weak zones. Here, we investigate factors controlling the number and shape of retreating subducting slabs formed by plume‐lithosphere interaction. Using 3‐D thermomechanical models we show that the deformation regime, which defines formation of single‐slab or multi‐slab subduction, depends on several parameters such as age of oceanic lithosphere, thickness of the crust and large‐scale lithospheric extension rate. Our model results indicate that on present‐day Earth multi‐slab plume‐induced subduction is initiated only if the oceanic lithosphere is relatively young (<30–40 Myr, but <10 Myr), and the crust has a typical thickness of 8 km. In turn, development of single‐slab subduction is facilitated by older lithosphere and pre‐imposed extensional stresses. In early Earth, plume‐lithosphere interaction could have led to formation of either episodic short‐lived circular subduction when the oceanic lithosphere was young or to multi‐slab subduction when the lithosphere was old. |
| abstract_unstemmed |
Abstract Initiation of subduction following the impingement of a hot buoyant mantle plume is one of the few scenarios that allow breaking the lithosphere and recycling a stagnant lid without requiring any preexisting weak zones. Here, we investigate factors controlling the number and shape of retreating subducting slabs formed by plume‐lithosphere interaction. Using 3‐D thermomechanical models we show that the deformation regime, which defines formation of single‐slab or multi‐slab subduction, depends on several parameters such as age of oceanic lithosphere, thickness of the crust and large‐scale lithospheric extension rate. Our model results indicate that on present‐day Earth multi‐slab plume‐induced subduction is initiated only if the oceanic lithosphere is relatively young (<30–40 Myr, but <10 Myr), and the crust has a typical thickness of 8 km. In turn, development of single‐slab subduction is facilitated by older lithosphere and pre‐imposed extensional stresses. In early Earth, plume‐lithosphere interaction could have led to formation of either episodic short‐lived circular subduction when the oceanic lithosphere was young or to multi‐slab subduction when the lithosphere was old. |
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| title_short |
Plume‐Induced Subduction Initiation: Single‐Slab or Multi‐Slab Subduction? |
| url |
https://doi.org/10.1029/2019GC008663 https://doaj.org/article/28e60e7783ab499589cbfea98131b25f https://doaj.org/toc/1525-2027 |
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| author2 |
Stephan Sobolev Taras Gerya Sascha Brune |
| author2Str |
Stephan Sobolev Taras Gerya Sascha Brune |
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QC - Physics |
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| doi_str |
10.1029/2019GC008663 |
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QC801-809 |
| up_date |
2024-07-03T14:19:27.622Z |
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7.4028835 |