DOI: 10.1016/j.epsl.2021.117116
论文题名: Global continental volcanism controlled the evolution of the oceanic nickel reservoir
作者: Liu H. ; Konhauser K.O. ; Robbins L.J. ; Sun W.-D.
刊名: Earth and Planetary Science Letters
ISSN: 0012821X
出版年: 2021
卷: 572 语种: 英语
中文关键词: BIF
; nickel
; Precambrian
; shales
; volcanic rocks
英文关键词: Atmospheric chemistry
; Degassing
; Melting
; Shale
; Volcanic rocks
; Volcanoes
; Atmospheric methanes
; Atmospheric oxygen
; BIF
; Great Oxidation Event
; Neoarchean
; Nickel concentrations
; Precambrian
; Source rocks
; Temporal variation
; Volcanics
; Nickel
英文摘要: Wanning nickel (Ni) abundances in the Neoarchean may have led to a decline in marine methanogenic bacteria due to the loss of a key micronutrient, causing a collapse in atmospheric methane levels and the subsequent rise of atmospheric oxygen – the Great Oxidation Event ∼2.5 Ga. However, this hypothesis currently lacks geological evidence that corroborates the processes that led to a decline in the supply of Ni to the oceans at that time. Here we investigate temporal variations of Ni concentrations in the likely source rocks – various volcanic lithologies - spanning the past 3.5 Byr. By applying a spatially gridded resampling to geochemical data from a global compilation of ∼96,000 continental volcanic rocks, we show that komatiites and basaltic-andesitic rocks largely controlled Ni fluxes to the Earth's surface during the Archean but had a waning influence thereafter due to the secular cooling of the mantle. A new compilation of marine shales (397 samples) and an updated compilation of banded iron formations (2037 samples) further confirms a declining clastic and dissolved supply of terrestrial Ni, respectively. Interestingly, we further observed a stable marine Ni concentration for the last 2 Byr. To explain this unexpected trend, we provide a computational model of mantle melting demonstrating that increasing melting pressures likely inhibited a further decline of Ni concentration in volcanic rocks and led to this relative consistency in Ni supply. © 2021 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/165568
Appears in Collections: 气候变化与战略
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作者单位: Center of Deep-Sea Research, Institute of Oceanology, Chinese Academy of Sciences, 7 Nanhai Road, Qingdao, 266071, China; Laboratory for Marine Mineral Resources, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266237, China; Center for Ocean Mega-Science, Chinese Academy of Sciences, 7 Nanhai Road, Qingdao, 266071, China; Department of Earth and Atmospheric Sciences, University of Alberta, Edmonton, AB T6G 2E3, Canada; Department of Geology, University of Regina, Regina, SK S4S 0A2, Canada
Recommended Citation:
Liu H.,Konhauser K.O.,Robbins L.J.,et al. Global continental volcanism controlled the evolution of the oceanic nickel reservoir[J]. Earth and Planetary Science Letters,2021-01-01,572