Cold-water corals - Are they hydrocarbon seep related?

被引:79
|
作者
Hovland, M [1 ]
Thomsen, E [1 ]
机构
[1] UNIV TROMSO,TROMSO MUSEUM,DEPT GEOL,N-9037 TROMSO,NORWAY
关键词
D O I
10.1016/S0025-3227(96)00086-2
中图分类号
P [天文学、地球科学];
学科分类号
07 ;
摘要
Numerous cold-water ahermatypic coral reefs (so-called Lophelia reefs), up to 30 m high, 150 m wide and 400 m long, occur at waterdepths from 100 to 350 m off Mid Norway. After the discovery of relatively high interstitial methane concentrations (204 ppb) in sediments collected at the base of one of these reef structures a causative link between the presence of the reefs and local micro-seepage through seabed of light hydrocarbons is here suggested. Shallow seismic records gathered across this and other reef colonies off Mid Norway also indicate the existence of gas-charged sediments below the reefs.
引用
收藏
页码:159 / 164
页数:6
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