Petrophysical characteristics of rocks and sulfides from the SWIR hydrothermal field

详细信息    查看全文

• 作者：Chunhui Tao (1) (2)
  Tao Wu (1) (2)
  Xiaobing Jin (1) (2)
  Bingjun Dou (3)
  Huaiming Li (1) (2)
  Jianping Zhou (1) (2)
  
• 关键词：SWIR ; rock ; polymetallic sulfides ; physical properties ; hydrothermal alteration
• 刊名：Acta Oceanologica Sinica
• 出版年：2013
• 出版时间：December 2013
• 年：2013
• 卷：32
• 期：12
• 页码：118-125
• 全文大小：692 KB
• 作者单位：Chunhui Tao (1) (2)
  Tao Wu (1) (2)
  Xiaobing Jin (1) (2)
  Bingjun Dou (3)
  Huaiming Li (1) (2)
  Jianping Zhou (1) (2)
  
  1. Key Laboratory of Submarine Geosciences, State Oceanic Administration, Hangzhou, 310012, China
  2. The Second Institute of Oceanography, State Oceanic Administration, Hangzhou, 310012, China
  3. Zhejiang Dacheng Construction Group Co. Ltd, Hangzhou, 310012, China
  
• ISSN：1869-1099

文摘

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.