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Petrophysical characteristics of rocks and sulfides from the SWIR hydrothermal field
作者姓名:TAO Chunhui  WU Tao  JIN Xiaobing  DOU Bingjun  LI Huaiming  ZHOU Jianping
作者单位:Key Laboratory of Submarine Geosciences, State Oceanic Administration, Hangzhou 310012, China;The Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China;Key Laboratory of Submarine Geosciences, State Oceanic Administration, Hangzhou 310012, China;The Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China;Key Laboratory of Submarine Geosciences, State Oceanic Administration, Hangzhou 310012, China;The Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China;Zhejiang DachengConstruction Group Co. Ltd, Hangzhou 310012, China;Key Laboratory of Submarine Geosciences, State Oceanic Administration, Hangzhou 310012, China;The Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China;Key Laboratory of Submarine Geosciences, State Oceanic Administration, Hangzhou 310012, China;The Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China
基金项目:Fundamental Project of Science and Technology under contract No. 2013FY112900; Public Science and Technology Research Funds Projects of Ocean under contract No. 201105001; the National Natural Science Foundation of China under contract No. 40506017.
摘    要:Study of petrophysical properties of rocks in seafioor hydrothermal fields has great significance for inves- tigation of seafloor hydrothermal activities, especially for polymetallic sulfides prospecting. In the present study, based on the current experimental conditions, we conducted systematic experiments to measure the magnetic susceptibility, electrical resistivity, porosity, density, as well as acoustic wave velocity of seafloor rocks and sulfides. Subsequently, we measured the physical characteristics of hydrothermal sulfides, basalts and peridotites which were collected from newly discovered seafloor hydrothermal fields at 49.6°E, 50.5°E, 5 1°E, 63.5°E, and 63.9°E of the Southwest Indian Ridge (SWIR). Previously available and newly collected data were combined to characterize the physical differences between polymetallic sulfides and rocks. We also discussed the impact of hydrothermal alteration on the bedrock and demonstrated how these petrophysical properties of rocks can help in geophysical prospecting of seafloor hydrothermal fields as indicators.

关 键 词:岩石物理特性  多金属硫化物  短波红外  海底热液活动  热液区  岩石物理性质  实验条件  热液硫化物
收稿时间:2/6/2013 12:00:00 AM
修稿时间:2013/4/27 0:00:00

Petrophysical characteristics of rocks and sulfides from the SWIR hydrothermal field
TAO Chunhui,WU Tao,JIN Xiaobing,DOU Bingjun,LI Huaiming,ZHOU Jianping.Petrophysical characteristics of rocks and sulfides from the SWIR hydrothermal field[J].Acta Oceanologica Sinica,2013,32(12):118-125.
Authors:TAO Chunhui  WU Tao  JIN Xiaobing  DOU Bingjun  LI Huaiming and ZHOU Jianping
Institution:1.Key Laboratory of Submarine Geosciences, State Oceanic Administration, Hangzhou 310012, China;The Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China2.Zhejiang DachengConstruction Group Co. Ltd, Hangzhou 310012, China
Abstract:Study of petrophysical properties of rocks in seafloor hydrothermal fields has great significance for investigation of seafloor hydrothermal activities, especially for polymetallic sulfides prospecting. In the present study, based on the current experimental conditions, we conducted systematic experiments to measure the magnetic susceptibility, electrical resistivity, porosity, density, as well as acoustic wave velocity of seafloor rocks and sulfides. Subsequently, we measured the physical characteristics of hydrothermal sulfides, basalts and peridotites which were collected from newly discovered seafloor hydrothermal fields at 49.6°E, 50.5°E, 51°E, 63.5°E, and 63.9°E of the Southwest Indian Ridge (SWIR). Previously available and newly collected data were combined to characterize the physical differences between polymetallic sulfides and rocks. We also discussed the impact of hydrothermal alteration on the bedrock and demonstrated how these petrophysical properties of rocks can help in geophysical prospecting of seafloor hydrothermal fields as indicators.
Keywords:SWIR  rock  polymetallicsulfides  physical properties  hydrothermal alteration
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