Plume interaction and mantle heterogeneity: A geochemical perspective
Mantle plumes originating from the Core-Mantle Boundary (CMB) or the Mantle Transition Zone (MTZ) play an important role in material transfer through Earth’s interior. The hotspot-related plumes originate through different mechanisms and have diverse processes of material transfer. Both the Morgania...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2020-09-01
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| Series: | Geoscience Frontiers |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1674987120300517 |
| _version_ | 1797713949419896832 |
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| author | Zhen Zhang Sanzhong Li Guangzeng Wang Xiyao Li Gang Wang Yanhui Suo M. Santosh Lingli Guo |
| author_facet | Zhen Zhang Sanzhong Li Guangzeng Wang Xiyao Li Gang Wang Yanhui Suo M. Santosh Lingli Guo |
| author_sort | Zhen Zhang |
| collection | DOAJ |
| description | Mantle plumes originating from the Core-Mantle Boundary (CMB) or the Mantle Transition Zone (MTZ) play an important role in material transfer through Earth’s interior. The hotspot-related plumes originate through different mechanisms and have diverse processes of material transfer. Both the Morganian plumes and large low shear wave velocity provinces (LLSVPs) are derived from the D″ layer in the CMB, whereas the Andersonian plumes originate from the upper mantle. All plumes have a plume head at the Moho, although the LLSVPs have an additional plume head at the MTZ. We compare the geochemical characteristics of various plumes in an attempt to evaluate the material exchange between the plumes and mantle layers. The D″ layer, the LLSVPs and the Morganian plumes are consisted of subducted slab and post-perovskite from the lower mantle. Bridgmanite would crystallize during the upwelling process of the LLSVPs and the Morganian plumes in the lower mantle, and the residual is a basalt-trachyte suite. Unlike the Morganian plumes, the crystallization in the LLSVPs is insufficient that material accumulates beneath the MTZ to form a plume head. Typically, the secondary plumes above the plume head occur at the edge of the LLSVPs because it is easier for bridgmanite crystal separating from the plume head at the edge, and the residual material with low density upwells to form the secondary plumes. Meanwhile, Na and K are enriched during the long-term crystallization process, and then the basalt-phonolite suite appears in the LLSVPs. The geochemical characteristics of Andersonian plumes suggest that the basalt-rhyolite suite is the major component in the upper mantle. Meanwhile the basalt-rhyolite suite also appears in the LLSVPs and the Morganian plumes because of the assimilation and contamination in the plume head beneath the Moho. |
| first_indexed | 2024-03-12T07:44:23Z |
| format | Article |
| id | doaj.art-504d9ca621234e978b6a679853cd5ace |
| institution | Directory Open Access Journal |
| issn | 1674-9871 |
| language | English |
| last_indexed | 2024-03-12T07:44:23Z |
| publishDate | 2020-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Geoscience Frontiers |
| spelling | doaj.art-504d9ca621234e978b6a679853cd5ace2023-09-02T21:05:20ZengElsevierGeoscience Frontiers1674-98712020-09-0111515711579Plume interaction and mantle heterogeneity: A geochemical perspectiveZhen Zhang0Sanzhong Li1Guangzeng Wang2Xiyao Li3Gang Wang4Yanhui Suo5M. Santosh6Lingli Guo7Fourth Institute of Oceanography, Ministry of Natural Resources, Beihai 536000, China; Key Lab of Submarine Geosciences and Prospecting Techniques, MOE, College of Marine Geosciences, Ocean University of China, Qingdao 266100, ChinaKey Lab of Submarine Geosciences and Prospecting Techniques, MOE, College of Marine Geosciences, Ocean University of China, Qingdao 266100, China; Laboratory for Marine Geology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China; Corresponding author. Department of Marine Geology, College of Marine Geosciences, Ocean University of China, No. 238, Songling Road, Qingdao 266100, China.Key Lab of Submarine Geosciences and Prospecting Techniques, MOE, College of Marine Geosciences, Ocean University of China, Qingdao 266100, China; Laboratory for Marine Geology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, ChinaKey Lab of Submarine Geosciences and Prospecting Techniques, MOE, College of Marine Geosciences, Ocean University of China, Qingdao 266100, China; Laboratory for Marine Geology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, ChinaKey Lab of Submarine Geosciences and Prospecting Techniques, MOE, College of Marine Geosciences, Ocean University of China, Qingdao 266100, China; Laboratory for Marine Geology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, ChinaKey Lab of Submarine Geosciences and Prospecting Techniques, MOE, College of Marine Geosciences, Ocean University of China, Qingdao 266100, China; Laboratory for Marine Geology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, ChinaKey Lab of Submarine Geosciences and Prospecting Techniques, MOE, College of Marine Geosciences, Ocean University of China, Qingdao 266100, China; Laboratory for Marine Geology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China; School of Earth Sciences and Resources, China University of Geosciences (Beijing), Beijing 100083, China; Department of Earth Sciences, University of Adelaide, Adelaide, SA, 5005, AustraliaKey Lab of Submarine Geosciences and Prospecting Techniques, MOE, College of Marine Geosciences, Ocean University of China, Qingdao 266100, China; Laboratory for Marine Geology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, ChinaMantle plumes originating from the Core-Mantle Boundary (CMB) or the Mantle Transition Zone (MTZ) play an important role in material transfer through Earth’s interior. The hotspot-related plumes originate through different mechanisms and have diverse processes of material transfer. Both the Morganian plumes and large low shear wave velocity provinces (LLSVPs) are derived from the D″ layer in the CMB, whereas the Andersonian plumes originate from the upper mantle. All plumes have a plume head at the Moho, although the LLSVPs have an additional plume head at the MTZ. We compare the geochemical characteristics of various plumes in an attempt to evaluate the material exchange between the plumes and mantle layers. The D″ layer, the LLSVPs and the Morganian plumes are consisted of subducted slab and post-perovskite from the lower mantle. Bridgmanite would crystallize during the upwelling process of the LLSVPs and the Morganian plumes in the lower mantle, and the residual is a basalt-trachyte suite. Unlike the Morganian plumes, the crystallization in the LLSVPs is insufficient that material accumulates beneath the MTZ to form a plume head. Typically, the secondary plumes above the plume head occur at the edge of the LLSVPs because it is easier for bridgmanite crystal separating from the plume head at the edge, and the residual material with low density upwells to form the secondary plumes. Meanwhile, Na and K are enriched during the long-term crystallization process, and then the basalt-phonolite suite appears in the LLSVPs. The geochemical characteristics of Andersonian plumes suggest that the basalt-rhyolite suite is the major component in the upper mantle. Meanwhile the basalt-rhyolite suite also appears in the LLSVPs and the Morganian plumes because of the assimilation and contamination in the plume head beneath the Moho.http://www.sciencedirect.com/science/article/pii/S1674987120300517Mantle plumesMantle componentsGeochemical process |
| spellingShingle | Zhen Zhang Sanzhong Li Guangzeng Wang Xiyao Li Gang Wang Yanhui Suo M. Santosh Lingli Guo Plume interaction and mantle heterogeneity: A geochemical perspective Geoscience Frontiers Mantle plumes Mantle components Geochemical process |
| title | Plume interaction and mantle heterogeneity: A geochemical perspective |
| title_full | Plume interaction and mantle heterogeneity: A geochemical perspective |
| title_fullStr | Plume interaction and mantle heterogeneity: A geochemical perspective |
| title_full_unstemmed | Plume interaction and mantle heterogeneity: A geochemical perspective |
| title_short | Plume interaction and mantle heterogeneity: A geochemical perspective |
| title_sort | plume interaction and mantle heterogeneity a geochemical perspective |
| topic | Mantle plumes Mantle components Geochemical process |
| url | http://www.sciencedirect.com/science/article/pii/S1674987120300517 |
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