globalchange  > 气候变化与战略
DOI: 10.1016/j.earscirev.2021.103544
Title:
The trials and tribulations of the Hawaii hot spot model
Author: Jiang Z.; Li S.; Liu Q.; Zhang J.; Zhou Z.; Zhang Y.
Source Publication: Earth Science Reviews
ISSN: 00128252
Publishing Year: 2021
Volume: 215
Language: 英语
keyword in Chinese: Geochemistry ; Geodynamics ; Hawaii-Emperor (H-E) seamount chain ; Hawaii-Emperor bend (H-E bend) ; Hawaiian mantle plume (hot spot) ; Pacific plate motion ; Paleomagnetism
Keyword: geochemistry ; geodynamics ; hot spot ; mantle plume ; Pacific plate ; paleomagnetism ; plate motion ; reconstruction ; Detroit Seamount ; Emperor Seamounts ; Hawaiian Islands ; Pacific Ocean
English Abstract: The Hawaiian-Emperor volcanic chain (H-E chain) is located in the middle of the North Pacific Ocean. It extends from northwest to southeast, including two segments, the older Emperor chain and the younger Hawaiian chain between which is a 60o change in strike, here termed the H-E bend. The H-E chain is the clearest and most intensively researched hot spot track in terms of plate motion, mantle plumes, tectonics, geochemical evolution, and lithospheric studies. However, debates on the formation of the H-E chain, in particular the H-E bend, concerning its origin in hot spot drift and/or Pacific plate motion change, have been ongoing for several decades. In this paper, we review current understanding and ideas concerning this debate and suggest ways forward. So far, neither hot spot southerly drift nor Pacific plate motion change can perfectly account for the geometry and progression of the H-E chain. In this review, we put forward a joint model where these two competing processes together can reasonably explain the evolution of the H-E chain and the H-E bend. In addition, we proposed three stages for formation of the H-E chain, including: 1) A ridge-plume interaction stage: Meiji~Detroit seamounts and a possible subducted section; 2) A combination of hot spot-Pacific plate motion: South of Detroit seamount ~ H-E bend; and 3) Pacific plate motion with a fixed hot spot: Hawaiian volcanic chain. In addition, any plate movement at the surface must be balanced by motion deeper in the mantle. Therefore, we consider that the surface Pacific plate motion and the state of deep mantle plume at 47–55 Ma are not totally separated but co-evolved. Furthermore, reconstructions of the Pacific plate and its boundaries should be considered if Hawaiian hot spot motion makes great contributions to the formation of the H-E chain. Nevertheless, establishing the causal links between these events and their underlying dynamic triggers requires further, more comprehensive work. © 2021 Elsevier B.V.
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Document Type: 期刊论文
Identifier: http://119.78.100.158/handle/2HF3EXSE/166424
Appears in Collections:气候变化与战略

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Affiliation: Frontiers Science Center for Deep Ocean Multispheres and Earth System/Key Lab of Submarine Geosciences and Prospecting Techniques, MOE, College of Marine Geosciences, Ocean University of China, Qingdao, 266100, China; Laboratory for Marine Mineral Resources, Qingdao National Oceanography Laboratory for Marine Science and Technology, Qingdao, 266237, China; Centre for Marine Magnetism (CM2), Department of Ocean Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China; Laboratory for Marine Geology, Qingdao National Oceanography Laboratory for Marine Science and Technology, Qingdao, 266237, China; Frontiers Science Center for Deep Ocean Multispheres and Earth System/ Institute for Advanced Ocean Study, Ocean University of China, Qingdao, 266100, China; College of Earth Science and Engineering, Shandong University of Science and Technology, Qingdao, 266590, China

Recommended Citation:
Jiang Z.,Li S.,Liu Q.,et al. The trials and tribulations of the Hawaii hot spot model[J]. Earth Science Reviews,2021-01-01,215
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