DOI: 10.1007/s00531-014-1002-0
Scopus记录号: 2-s2.0-84908576399
论文题名: Constraining input and output fluxes of the southern-central Chile subduction zone: water, chlorine and sulfur
作者: Völker D. ; Wehrmann H. ; Kutterolf S. ; Iyer K. ; Rabbel W. ; Geersen J. ; Hoernle K.
刊名: International Journal of Earth Sciences
ISSN: 14373254
出版年: 2014
卷: 103, 期: 7 起始页码: 2129
结束页码: 2153
语种: 英语
英文关键词: Arc magmatism
; Forearc dewatering
; Southern volcanic zone of Chile
; Subduction fluids
; Subduction input
; Volcanic volatile output rates
Scopus关键词: chlorine
; island arc
; lithospheric structure
; magmatism
; mantle
; Nazca plate
; porosity
; subduction zone
; sulfur
; water
; Chile
英文摘要: In this paper, we constrain the input and output fluxes of H2O, Cl and S into the southern-central Chilean subduction zone (31°S–46°S). We determine the input flux by calculating the amounts of water, chlorine and sulfur that are carried into the subduction zone in subducted sediments, igneous crust and hydrated lithospheric mantle. The applied models take into account that latitudinal variations in the subducting Nazca plate impact the crustal porosity and the degree of upper mantle serpentinization and thus water storage in the crust and mantle. In another step, we constrain the output fluxes of the subduction zone both to the subcontinental lithospheric mantle and to the atmosphere–geosphere–ocean by the combined use of gas flux determinations at the volcanic arc, volume calculations of volcanic rocks and the combination of mineralogical and geothermal models of the subduction zone. The calculations indicate that about 68 Tg/m/Ma of water enters the subduction zone, as averaged over its total length of 1,480 km. The volcanic output on the other hand accounts for 2 Tg/m/Ma or 3 % of that input. We presume that a large fraction of the volatiles that are captured within the subducting sediments (which accounts for roughly one-third of the input) are cycled back into the ocean through the forearc. This assumption is however questioned by the present lack of evidence for major venting systems of the submarine forearc. The largest part of the water that is carried into the subduction zone in the crust and hydrated mantle (accounting for two-thirds of the input) appears to be transported beyond the volcanic arc. © 2014, Springer-Verlag Berlin Heidelberg. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84908576399&doi=10.1007%2fs00531-014-1002-0&partnerID=40&md5=1841b8161a675d21b2618547ca042e81
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/70415
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: Collaborative Research Center (SFB) 574 at GEOMAR, Helmholtz Centre for Ocean Research Kiel, Wischhofstrasse 1-3, Kiel, Germany; MARUM Center for Marine Environmental Sciences, University of Bremen, Leobener Str, Bremen, Germany; Institute of Geosciences, Collaborative Research Center (SFB) 574 at the University of Kiel, Kiel, Germany; National Oceanography Centre Southampton, University of Southampton, Waterfront Campus, European Way, Southampton, United Kingdom
Recommended Citation:
Völker D.,Wehrmann H.,Kutterolf S.,et al. Constraining input and output fluxes of the southern-central Chile subduction zone: water, chlorine and sulfur[J]. International Journal of Earth Sciences,2014-01-01,103(7)