globalchange  > 气候减缓与适应
DOI: 10.1038/ngeo1888
论文题名:
Formation of carbonate chimneys in the Mediterranean Sea linked to deep-water oxygen depletion
作者: Bayon G.; Dupré S.; Ponzevera E.; Etoubleau J.; Chéron S.; Pierre C.; Mascle J.; Boetius A.; De Lange G.J.
刊名: Nature Geoscience
ISSN: 17520894
出版年: 2013
卷: 6, 期:9
起始页码: 755
结束页码: 760
语种: 英语
Scopus关键词: anoxic conditions ; carbonate ; deep water ; marine sediment ; methane ; microbial activity ; organic geochemistry ; oxidation ; oxygen minimum layer ; precipitation (chemistry) ; seafloor ; sediment chemistry ; seepage ; submarine fan ; Black Sea ; Mediterranean Sea ; Gorgonacea ; Spherules
英文摘要: Marine sediments at ocean margins vent substantial amounts of methane. Microbial oxidation of the methane released can trigger the precipitation of carbonate within sediments and support a broad diversity of seafloor ecosystems. The factors controlling microbial activity and carbonate precipitation associated with the seepage of submarine fluid over geological time remain poorly constrained. Here, we characterize the petrology and geochemistry of rocks sampled from metre-size build-ups of methane-derived carbonate chimneys located at the Amon mud volcano on the Nile deep-sea fan. We find that these carbonates comprise porous structures composed of aggregated spherules of aragonite, and closely resemble microbial carbonate reefs forming at present in the anoxic bottom waters of the Black Sea. Using U-series dating, we show that the Amon carbonate build-ups formed between 12 and 7 thousand years ago, contemporaneous with the deposition of organic-rich sediments in the eastern Mediterranean, the so-called sapropel layer S1. We propose that the onset of deep-water suboxic or anoxic conditions associated with sapropel formation resulted in the development of intense anaerobic microbial activity at the sea floor, and thus the formation of carbonate chimneys. © 2013 Macmillan Publishers Limited. All rights reserved.
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/106707
Appears in Collections:气候减缓与适应
科学计划与规划

Files in This Item:

There are no files associated with this item.


作者单位: IFREMER, Unité de Recherche Géosciences Marines, 29280 Plouzané, France; Laboratoire d'Oceanographie et du Climat: Experimentation et Approches Numeriques, UMR 7159, Université Pierre et Marie Curie, 75252 Paris Cedex 5, France; Université de Nice Sophia-Antipolis, CNRS, Observatoire de la Côte d'Azur, Géoazur, 06230 Villefranche-sur-mer, France; HGF-MPG Joint Research Group for Deep Sea Ecology and Technology, Max Planck Institute for Marine Microbiology, 28359 Bremen, Germany; Department of Earth Sciences-Geochemistry, Faculty of Geosciences, Utrecht University, 3584 CD Utrecht, Netherlands

Recommended Citation:
Bayon G.,Dupré S.,Ponzevera E.,et al. Formation of carbonate chimneys in the Mediterranean Sea linked to deep-water oxygen depletion[J]. Nature Geoscience,2013-01-01,6(9)
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Bayon G.]'s Articles
[Dupré S.]'s Articles
[Ponzevera E.]'s Articles
百度学术
Similar articles in Baidu Scholar
[Bayon G.]'s Articles
[Dupré S.]'s Articles
[Ponzevera E.]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Bayon G.]‘s Articles
[Dupré S.]‘s Articles
[Ponzevera E.]‘s Articles
Related Copyright Policies
Null
收藏/分享
所有评论 (0)
暂无评论
 

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.