DOI: 10.1038/ngeo3009
论文题名: Fluid-driven metamorphism of the continental crust governed by nanoscale fluid flow
作者: Plümper O. ; Botan A. ; Los C. ; Liu Y. ; Malthe-Sørenssen A. ; Jamtveit B.
刊名: Nature Geoscience
ISSN: 17520894
出版年: 2017
卷: 10, 期: 9 起始页码: 685
结束页码: 690
语种: 英语
Scopus关键词: continental crust
; crust
; feldspar
; fluid flow
; fluid pressure
; greenhouse gas
; heterogeneity
; igneous rock
; mass transport
; metamorphism
; permeability
; rheology
英文摘要: The transport of fluids through the Earth's crust controls the redistribution of elements to form mineral and hydrocarbon deposits, the release and sequestration of greenhouse gases, and facilitates metamorphic reactions that influence lithospheric rheology. In permeable systems with a well-connected porosity, fluid transport is largely driven by fluid pressure gradients. In less permeable rocks, deformation may induce permeability by creating interconnected heterogeneities, but without these perturbations, mass transport is limited along grain boundaries or relies on transformation processes that self-generate transient fluid pathways. The latter can facilitate large-scale fluid and mass transport in nominally impermeable rocks without large-scale fluid transport pathways. Here, we show that pervasive, fluid-driven metamorphism of crustal igneous rocks is directly coupled to the production of nanoscale porosity. Using multi-dimensional nano-imaging and molecular dynamics simulations, we demonstrate that in feldspar, the most abundant mineral family in the Earth's crust, electrokinetic transport through reaction-induced nanopores (<100 nm) can potentially be significant. This suggests that metamorphic fluid flow and fluid-mediated mineral transformation reactions can be considerably influenced by nanofluidic transport phenomena. © 2017 Macmillan Publishers Limited, part of Springer Nature. All rights reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/105717
Appears in Collections: 气候减缓与适应 科学计划与规划
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作者单位: Department of Earth Sciences, Utrecht University, Budapestlaan 4, Utrecht, Netherlands; Physics of Geological Processes (PGP), Department of Geosciences and Physics, University of Oslo, Blindern, Oslo, Norway; Centre for Materials Science and Nanotechnology, University of Oslo, Blindern, Oslo, Norway; Department of Geosciences, University of Bremen, Klagenfurter Strasse 2, Bremen, Germany; Debye Institute for Nanomaterials Science, Utrecht University, Princetonplein 1, Utrecht, Netherlands
Recommended Citation:
Plümper O.,Botan A.,Los C.,et al. Fluid-driven metamorphism of the continental crust governed by nanoscale fluid flow[J]. Nature Geoscience,2017-01-01,10(9)