Preliminary observations of submarine geothermal activity in the vicinity of White Island Volcano, Taupo Volcanic Zone, New Zealand
Preliminary observations of submarine geothermal activity in the vicinity of White Island Volcano, Taupo Volcanic Zone, New Zealand
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新西兰陶波火山区怀特岛火山附近海底地热活动的初步观测
DOI：
10.1080/03036758.1989.10421847
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发表时间：
1989
影响因子：
2.2
通讯作者：
J. W. Hedenquist
中科院分区：
文献类型：
--
作者：
F. Sarano;R. Murphy;B. Houghton;J. W. Hedenquist
摘要：Calypso号科考船在距怀特岛火山西南13 km处的167 m深度直接观测到海底热液的喷出。这些喷口位于一个几米高的硬石膏丘上，我们将其命名为Calypso喷口。根据之前对该地区的巡航推断出的活动，报告了海面上的气泡区。对硬石膏锥体及其邻近泥浆进行了取样，并对其进行了矿物学和化学分析。硬石膏的地层中不含浓缩的微量金属。细层状泥质由非膨润土和贝脱石蒙脱石粘土组成，可能为热液成因；它们的微量元素富集模式与怀特岛附近金属泥中观察到的不同。Calypso粘土的砷（530 mg/kg）、锑（150 mg/kg）、汞（90 mg/kg）和铊（~ 500 mg/kg）含量异常高，所有挥发性金属也都集中在地下温泉沉淀物中；此外，铀(13…
Abstract Discharge of hydrothermal fluids on the seafloor 13 km southwest of White Island volcano has been directly observed at 167 m depth by submersible of the research vessel Calypso. The vents were located on an anhydrite mound several metres high, which we name the Calypso vents. Activity had been inferred by previous cruises to the area, which reported bubble zones at the surface. The anhydrite cone and adjacent muds were sampled and their mineralogy and chemistry analysed. The anhydrite has not concentrated trace metals in its formation. The finely laminated muds are comprised of nontronite and beidellite smectite clays of probable hydrothermal origin; their trace element enrichment patterns are different from those observed in metalliferous muds near White Island. The Calypso clays are anomalously high in arsenic (530 mg/kg), antimony (150 mg/kg), mercury (90 mg/kg) and thallium (˜500 mg/kg), all volatile metals also found concentrated in subaerial hot spring precipitates; in addition, uranium (13...