The origin and evolution of Archean lithospheric mantle
The composition of the subcontinental lithospheric mantle (SCLM) varies in a systematic way with the age of the last major tectonothermal event in the overlying crust. This secular evolution in SCLM composition implies quasi-contemporaneous formation (or modification) of the crust and its underlying...
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2003
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ftmacquarieunicr:oai:https://researchers.mq.edu.au:publications/1ceb21f8-02b2-433d-97bd-4c5a5e88c6f0 2024-10-13T14:07:48+00:00 The origin and evolution of Archean lithospheric mantle Griffin, W. L. O'Reilly, S. Y. Abe, N. Aulbach, S. Davies, R. M. Pearson, N. J. Doyle, B. J. Kivi, K. 2003-11-10 https://researchers.mq.edu.au/en/publications/1ceb21f8-02b2-433d-97bd-4c5a5e88c6f0 https://doi.org/10.1016/S0301-9268(03)00180-3 http://www.scopus.com/inward/record.url?scp=0345094128&partnerID=8YFLogxK eng eng info:eu-repo/semantics/closedAccess Griffin , W L , O'Reilly , S Y , Abe , N , Aulbach , S , Davies , R M , Pearson , N J , Doyle , B J & Kivi , K 2003 , ' The origin and evolution of Archean lithospheric mantle ' , Precambrian Research , vol. 127 , no. 1-3 , pp. 19-41 . https://doi.org/10.1016/S0301-9268(03)00180-3 article 2003 ftmacquarieunicr https://doi.org/10.1016/S0301-9268(03)00180-3 2024-09-18T23:49:09Z The composition of the subcontinental lithospheric mantle (SCLM) varies in a systematic way with the age of the last major tectonothermal event in the overlying crust. This secular evolution in SCLM composition implies quasi-contemporaneous formation (or modification) of the crust and its underlying mantle root, and indicates that crust and mantle in many cases have remained linked through their subsequent history. Archean SCLM is distinctively different from younger mantle; it is highly depleted, commonly is strongly stratified, and contains rock types (especially subcalcic harzburgites) that are essentially absent in younger SCLM. Some, but not all, Archean SCLM also has higher Si/Mg than younger SCLM. Attempts to explain the formation of Archean SCLM by reference to Uniformitarian processes, such as the subduction of oceanic mantle ("lithospheric stacking"), founder on the marked differences in geochemical trends between Archean xenolith suites and Phanerozoic examples of highly depleted mantle, such as abyssal peridotites, island-arc xenolith suites and ophiolites. In Archean xenolith suites, positive correlations between Fe, Cr and Al imply that no Cr-Al phase (i.e. spinel or garnet) was present on the liquidus during the melting. This situation is in direct contrast to the geochemical patterns observed in highly depleted peridotites from modern environments, which are controlled by the presence of spinel during melting. It is more likely that Archean SCLM represents residues and/or cumulates from high-degree melting at significant depths, related to specifically Archean processes involving major mantle overturns or megaplumes. The preservation of island-arc like SCLM at shallow levels in some sections (e.g. Slave Craton, E. Greenland) suggests that this specifically Archean tectonic regime may have coexisted with a shallow regime more similar to modern plate tectonics. Preliminary data from in situ Re-Os dating of sulfide minerals in mantle-derived peridotites suggest that much Archean SCLM may have formed ... Article in Journal/Newspaper Greenland Macquarie University Research Portal Greenland Precambrian Research 127 1-3 19 41 |
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Open Polar |
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Macquarie University Research Portal |
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ftmacquarieunicr |
language |
English |
description |
The composition of the subcontinental lithospheric mantle (SCLM) varies in a systematic way with the age of the last major tectonothermal event in the overlying crust. This secular evolution in SCLM composition implies quasi-contemporaneous formation (or modification) of the crust and its underlying mantle root, and indicates that crust and mantle in many cases have remained linked through their subsequent history. Archean SCLM is distinctively different from younger mantle; it is highly depleted, commonly is strongly stratified, and contains rock types (especially subcalcic harzburgites) that are essentially absent in younger SCLM. Some, but not all, Archean SCLM also has higher Si/Mg than younger SCLM. Attempts to explain the formation of Archean SCLM by reference to Uniformitarian processes, such as the subduction of oceanic mantle ("lithospheric stacking"), founder on the marked differences in geochemical trends between Archean xenolith suites and Phanerozoic examples of highly depleted mantle, such as abyssal peridotites, island-arc xenolith suites and ophiolites. In Archean xenolith suites, positive correlations between Fe, Cr and Al imply that no Cr-Al phase (i.e. spinel or garnet) was present on the liquidus during the melting. This situation is in direct contrast to the geochemical patterns observed in highly depleted peridotites from modern environments, which are controlled by the presence of spinel during melting. It is more likely that Archean SCLM represents residues and/or cumulates from high-degree melting at significant depths, related to specifically Archean processes involving major mantle overturns or megaplumes. The preservation of island-arc like SCLM at shallow levels in some sections (e.g. Slave Craton, E. Greenland) suggests that this specifically Archean tectonic regime may have coexisted with a shallow regime more similar to modern plate tectonics. Preliminary data from in situ Re-Os dating of sulfide minerals in mantle-derived peridotites suggest that much Archean SCLM may have formed ... |
format |
Article in Journal/Newspaper |
author |
Griffin, W. L. O'Reilly, S. Y. Abe, N. Aulbach, S. Davies, R. M. Pearson, N. J. Doyle, B. J. Kivi, K. |
spellingShingle |
Griffin, W. L. O'Reilly, S. Y. Abe, N. Aulbach, S. Davies, R. M. Pearson, N. J. Doyle, B. J. Kivi, K. The origin and evolution of Archean lithospheric mantle |
author_facet |
Griffin, W. L. O'Reilly, S. Y. Abe, N. Aulbach, S. Davies, R. M. Pearson, N. J. Doyle, B. J. Kivi, K. |
author_sort |
Griffin, W. L. |
title |
The origin and evolution of Archean lithospheric mantle |
title_short |
The origin and evolution of Archean lithospheric mantle |
title_full |
The origin and evolution of Archean lithospheric mantle |
title_fullStr |
The origin and evolution of Archean lithospheric mantle |
title_full_unstemmed |
The origin and evolution of Archean lithospheric mantle |
title_sort |
origin and evolution of archean lithospheric mantle |
publishDate |
2003 |
url |
https://researchers.mq.edu.au/en/publications/1ceb21f8-02b2-433d-97bd-4c5a5e88c6f0 https://doi.org/10.1016/S0301-9268(03)00180-3 http://www.scopus.com/inward/record.url?scp=0345094128&partnerID=8YFLogxK |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland |
genre_facet |
Greenland |
op_source |
Griffin , W L , O'Reilly , S Y , Abe , N , Aulbach , S , Davies , R M , Pearson , N J , Doyle , B J & Kivi , K 2003 , ' The origin and evolution of Archean lithospheric mantle ' , Precambrian Research , vol. 127 , no. 1-3 , pp. 19-41 . https://doi.org/10.1016/S0301-9268(03)00180-3 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1016/S0301-9268(03)00180-3 |
container_title |
Precambrian Research |
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127 |
container_issue |
1-3 |
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19 |
op_container_end_page |
41 |
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1812814329531072512 |