气候变化领域集成服务门户(CCPortal): Remobilization of crustal carbon may dominate volcanic arc emissions

CCPortal

DOI	10.1126/science.aan5049
	Remobilization of crustal carbon may dominate volcanic arc emissions
	Mason E.; Edmonds M.; Turchyn A.V.
发表日期	2017
ISSN	0036-8075
起始页码	290
结束页码	294
卷号	357 期号:6348
英文摘要	The flux of carbon into and out of Earth’s surface environment has implications for Earth’s climate and habitability. We compiled a global data set for carbon and helium isotopes from volcanic arcs and demonstrated that the carbon isotope composition of mean global volcanic gas is considerably heavier, at –3.8 to –4.6 per mil (), than the canonical mid-ocean ridge basalt value of –6.0. The largest volcanic emitters outgas carbon with higher d13C and are located in mature continental arcs that have accreted carbonate platforms, indicating that reworking of crustal limestone is an important source of volcanic carbon. The fractional burial of organic carbon is lower than traditionally determined from a global carbon isotope mass balance and may have varied over geological time, modulated by supercontinent formation and breakup. © 2017 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. The title Science is a registered trademark of AAAS.
英文关键词	carbon; carbonic acid; helium; isotope; limestone; organic carbon; biogeochemical cycle; carbon; carbon flux; carbon isotope; carbonate platform; continental arc; geological time; helium isotope; island arc; isotopic composition; limestone; mid-ocean ridge; organic carbon; remobilization; supercontinent; Article; atmosphere; basalt; carbon cycle; carbon fixation; carbon footprint; chemical composition; climate; exhaust gas; geochemistry; geological time; molecular weight; priority journal; rock; sea; volcanic ash; volcano
语种	英语
来源期刊	Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/244675
作者单位	Department of Earth Sciences, University of Cambridge, Downing Street, Cambridge, CB2 3EQ, United Kingdom
推荐引用方式 GB/T 7714	Mason E.,Edmonds M.,Turchyn A.V.. Remobilization of crustal carbon may dominate volcanic arc emissions[J],2017,357(6348).
APA	Mason E.,Edmonds M.,&Turchyn A.V..(2017).Remobilization of crustal carbon may dominate volcanic arc emissions.Science,357(6348).
MLA	Mason E.,et al."Remobilization of crustal carbon may dominate volcanic arc emissions".Science 357.6348(2017).