干旱区生态环境知识资源中心(Arid): Methane-derived authigenic carbonates-A case for a globally relevant marine carbonate factory

Arid

DOI	10.1016/j.earscirev.2023.104487
	Methane-derived authigenic carbonates-A case for a globally relevant marine carbonate factory
	Akam, Sajjad A.; Swanner, Elizabeth D.; Yao, Hongming; Hong, Wei-Li; Peckmann, Jorn
通讯作者	Akam, SA
来源期刊	EARTH-SCIENCE REVIEWS
ISSN	0012-8252
EISSN	1872-6828
出版年	2023
卷号	243
英文摘要	Precipitation of methane-derived authigenic carbonates (MDAC) is an integral part of marine methane production and consumption, but MDAC's relative significance to the global marine carbon cycle is not well understood. Here we provide a synthesis and perspective to highlight MDAC from a global marine carbon biogeochemistry viewpoint. MDAC formation is a result and archive of carbon-sulfur (C-S) coupling in the shallow sulfatic zone and carbon-silicon (C-Si) coupling in deeper methanic sediments. MDAC constitute a carbon sequestration of 3.93 Tmol C yr  1 (range 2.34-5.8 Tmol C yr  1) in the modern ocean and are the third largest carbon burial mechanism in marine sediments. This burial compares to 29% (11-57%) organic carbon and 10% (6-23%) skeletal carbonate carbon burial along continental margins. MDAC formation is also an important sink for benthic alkalinity and, thereby, a potential contributor to bottom water acidification. Our understanding of the impact of MDAC on global biogeochemical cycles has evolved over the past five decades from what was traditionally considered a passive carbon sequestration mechanism in a seep-oasis setting to what is now considered a dynamic carbonate factory expanding from deep sediments to bottom waters-a factory that has been operational since the Precambrian. We present a strong case for the need to improve regional scale quantification of MDAC accumulation rates and associated carbonate biogeochemical parameters, leading to their incorporation in present and paleo-carbon budgets in the next phase of MDAC exploration.
英文关键词	Methane seeps Methane-derived carbonates Authigenic carbonates Geological carbon cycling Cold seeps Marine carbon budget Marine silicate weathering Carbon sequestration Carbon burial Methane derived authigenic carbonate Methanogenic carbonate Carbonate factories Gas hydrates Methane cycling Ocean acidification
类型	Article
语种	英语
开放获取类型	hybrid
收录类别	SCI-E
WOS记录号	WOS:001031825700001
WOS关键词	ANAEROBIC OXIDATION ; SEEP-CARBONATES ; HYDROCARBON SEEPS ; SULFATE REDUCTION ; COLD SEEPS ; SEDIMENTS ; SEA ; GAS ; OCEAN ; FLUID
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/395886
推荐引用方式 GB/T 7714	Akam, Sajjad A.,Swanner, Elizabeth D.,Yao, Hongming,et al. Methane-derived authigenic carbonates-A case for a globally relevant marine carbonate factory[J],2023,243.
APA	Akam, Sajjad A.,Swanner, Elizabeth D.,Yao, Hongming,Hong, Wei-Li,&Peckmann, Jorn.(2023).Methane-derived authigenic carbonates-A case for a globally relevant marine carbonate factory.EARTH-SCIENCE REVIEWS,243.
MLA	Akam, Sajjad A.,et al."Methane-derived authigenic carbonates-A case for a globally relevant marine carbonate factory".EARTH-SCIENCE REVIEWS 243(2023).