气候变化领域集成服务门户(CCPortal): Graphitic material in fault zones: Implications for fault strength and carbon cycle

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DOI	10.1016/j.earscirev.2019.05.008
	Graphitic material in fault zones: Implications for fault strength and carbon cycle
	Cao S.; Neubauer F.
发表日期	2019
ISSN	00128252
起始页码	109
结束页码	124
卷号	194
英文摘要	The study discusses the presence, formation and destruction of graphitic material in fault rocks of exhumed fault zones. Because of the low strength, the presence of lubricating graphitic material along fault zones has important implications for understanding tectonic movements in various crustal levels. Fault zones are permeable for ascending and descending fluids and represent, therefore, effective pathways of fluids between deep lithospheric levels and Earth's surface, and this plumbing system is part of the carbon exchange system of the global carbon cycle between deep lithosphere and atmosphere. Processes of formation, structure and microfabrics of the graphitic material and the implications for the global carbon cycle in natural fault zones are still poorly understood. This paper gives an overview on the range of the origin of graphitic material along fault zones (e.g. organic vs. carbonatic vs. fluid origin) and its physical formation and destruction mechanisms. The presence of graphitic carbon permits: (1) to recognize faults with graphitic lubricants during faulting and allow assess, therefore, crustal strength over various temporal and spatial scales, (2) how carbon-bearing material is moving through the fault zone hence recording the complex structural history, (3) how carbon represents a monitor of fluid transport through fault zones, and (4) how graphitic material allow to pinpoint peak temperature conditions of the faulting process. The data implies also carbon transfer between depth and surface, which contributes to the global carbon cycle, but to a hitherto unknown extent. The presence of graphitic carbon in fault rocks has also implications on fault mechanics, engineering geology, nuclear waste repositories and assessment of seismic hazard. © 2019
关键词	Carbon cycle Fault zone Fluid Graphitic material Lubrication Stable carbon isotopes
英文关键词	carbon cycle; carbon isotope; crustal structure; fault zone; faulting; lithosphere; stable isotope; tectonic plate
语种	英语
来源期刊	Earth Science Reviews
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/203398
作者单位	State Key Laboratory of Geological Processes and Mineral Resources, Center for Global Tectonics and School of Earth Sciences, China University of Geosciences, Wuhan, 430074, China; Dept. of Geography and Geology, Paris-Lodron-University of Salzburg, Hellbrunnerstr. 34, Salzburg, A-5020, Austria
推荐引用方式 GB/T 7714	Cao S.,Neubauer F.. Graphitic material in fault zones: Implications for fault strength and carbon cycle[J],2019,194.
APA	Cao S.,&Neubauer F..(2019).Graphitic material in fault zones: Implications for fault strength and carbon cycle.Earth Science Reviews,194.
MLA	Cao S.,et al."Graphitic material in fault zones: Implications for fault strength and carbon cycle".Earth Science Reviews 194(2019).