| Mineral Components, Texture, and Forming Conditions of Hydrothermal Chimney on the East Pacific Rise at 9°-10°N |
| |
| 作者姓名： | 郑建斌 曹志敏 安伟 |
| |
| 作者单位： | [1]College of Marine Geosciences, Ocean University of China, Qingdao 266100, China [2]China Offshore Environmental Service Ltd., Tianjin 300452, China |
| |
| 摘 要： | To characterize the hydrothermal processes of East Pacific rise at 9°-10°N, sulfide mineral compositions, textural, and geochemical features of chimney ores were studied using ore microscope,scanning electron microscope, X-ray diffraction analysis, and electron microprobe techniques. Results show that there are three mineral assemblages for the hydrothermal chimney ores, namely：（i） anhydrite ＋ marcasite ＋ pyrite, （ii） pyrite ＋ sphalerite ＋ chalcopyrite, and （iii） chalcopyrite ＋ bornite ＋ digenite ＋ covellite. Mineral assemblages, zonational features, and geochemical characteristics of the ore minerals indicate that ore fluid temperature changed from low to high then to low with a maximum temperature up to 400 ℃. The chimney is a typical black smoker. The initial structure of the chimney was formed by the precipitation of anhydrites, and later the sulfides began to precipitate in the inner wall.
|
| 关 键 词： | 东太平洋海隆 热液过程 硫化物 矿物质 海底黑烟柱 |
| 修稿时间： | 2007-01-28 |
Mineral Components, Texture, and Forming Conditions of Hydrothermal Chimney on the East Pacific Rise at 9°-10°N |
| |
| Zheng Jianbin, Cao Zhimin ,An Wei.Mineral Components, Texture, and Forming Conditions of Hydrothermal Chimney on the East Pacific Rise at 9°-10°N[J].Journal of China University of Geosciences,2007,18(2):28-134. |
| |
| Authors: | Zheng Jianbin Cao Zhimin An Wei |
| |
| Institution: | 1. College of Marine Geosciences, Ocean University of China, Qingdao 266100, China ;2. China Offshore Environmental Service Ltd., Tianjin 300452, China |
| |
| Abstract: | |
| |
| Keywords: | hydrothermal processes black smoker mineral assemblage exsolution texture ore fluid |
| 本文献已被 维普 等数据库收录！ |
|
