DOI: 10.1007/s00531-016-1441-x
Scopus记录号: 2-s2.0-85012273673
论文题名: Craton destruction and related resources
作者: Zhu R. ; Zhang H. ; Zhu G. ; Meng Q. ; Fan H. ; Yang J. ; Wu F. ; Zhang Z. ; Zheng T.
刊名: International Journal of Earth Sciences
ISSN: 14373254
出版年: 2017
卷: 106, 期: 7 起始页码: 2233
结束页码: 2257
语种: 英语
英文关键词: Craton destruction
; Dehydration of stagnant slabs
; Gold deposit
; North China craton
; Rollback and retreat of oceanic plates
; Subduction of oceanic plates
Scopus关键词: continental crust
; craton
; dehydration
; gold
; mantle structure
; ore deposit
; Pacific plate
; physicochemical property
; slab
; subduction
; China
; North China Block
英文摘要:
Craton destruction is a dynamic event that plays an important role in Earth’s evolution. Based on comprehensive observations of many studies on the North China Craton (NCC) and correlations with the evolution histories of other cratons around the world, craton destruction has be defined as a geological process that results in the total loss of craton stability due to changes in the physical and chemical properties of the involved craton. The mechanisms responsible for craton destruction would be as the follows: (1) oceanic plate subduction; (2) rollback and retreat of a subducting oceanic plate; (3) stagnation and dehydration of a subducting plate in the mantle transition zone; (4) melting of the mantle above the mantle transition zone caused by dehydration of a stagnant slab; (5) non-steady flow in the upper mantle induced by melting, and/or (6) changes in the nature of the lithospheric mantle and consequent craton destruction caused by non-steady flow. Oceanic plate subduction itself does not result in craton destruction. For the NCC, it is documented that westward subduction of the paleo-Pacific plate should have initiated at the transition from the Middle-to-Late Jurassic, and resulted in the change of tectonic regime of eastern China. We propose that subduction, rollback and retreat of oceanic plates and dehydration of stagnant slabs are the main dynamic factors responsible for both craton destruction and concentration of mineral deposits, such as gold, in the overriding continental plate. Based on global distribution of gold deposits, we suggest that convergent plate margins are the most important setting for large gold concentrations. Therefore, decratonic gold deposits appear to occur preferentially in regions with oceanic subduction and overlying continental lithospheric destruction/modification/growth. © 2017, Springer-Verlag Berlin Heidelberg.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85012273673&doi=10.1007%2fs00531-016-1441-x&partnerID=40&md5=8b85d42bc485a1bb7c4977620781edbb
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/69966
Appears in Collections: 影响、适应和脆弱性 气候减缓与适应
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作者单位: State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China; School of Resource and Environmental Engineering, Hefei University of Technology, Hefei, China
Recommended Citation:
Zhu R.,Zhang H.,Zhu G.,et al. Craton destruction and related resources[J]. International Journal of Earth Sciences,2017-01-01,106(7)