Hydrothermal activity at Hook Ridge in the Central Bransfield Basin, Antarctica
Hydrothermal activity at Hook Ridge in the Central Bransfield Basin, Antarctica
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DOI：
10.1007/s003670050080
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发表时间：
1999-08-01
影响因子：
2.1
通讯作者：
Schenke, HW
中科院分区：
文献类型：
--
作者：
Bohrmann, G;Chin, C;Schenke, HW
在中央布兰斯菲尔德盆地的热液活动揭示了一个活跃的低温喷口领域的海底火山结构的顶部。探测到温度异常，海底出现各种各样的白色二氧化硅（蛋白石-A）沉淀物暴露和一些黄棕色羟基氧化铁结壳。遇到了富集的溶解甲烷浓度。就在抓斗到达甲板后，沉积物接近24摄氏度。没有密集的人口化能合成为基础的大型动物已知从其他热液喷口地区，除了pogonophora。研究表明，胡克岭沉积热液场是深部热液源的低温端员分支。
Hydrothermal activity in the Central Bransfield Basin revealed an active low-temperature vent field on top of a submarine volcanic structure. A temperature anomaly was detected and the sea floor showed various patches of white silica (opal-A) precipitate exposures and some yellow-brown Fe-oxyhydroxide crusts. Enriched dissolved methane concentrations were encountered. Sediment was near 24 degrees C just after the grab came on deck. No dense population of chemosynthetically based macrofauna known from other hydrothermal venting areas was present, except for pogonophora. The observations suggest that the sedimented hydrothermal field at Hook Ridge is a low-temperature end-member branch from a deeper hydrothermal source.