查詢結果分析
相關文獻
- Geological Study of Active Cold Seeps in the Syn-Collision Accretionary Prism Kaoping Slope off SW Taiwan
- 臺灣西南海域永安海脊甲烷冷泉沉積物中之自生硫複鐵礦
- 蘇澳冷泉的調查研究
- 臺灣西南海域甲烷水合物潛存之分析
- Distribution of Ichthyoplankton in the Waters off Southwestern Taiwan
- 新能源研究--臺灣西南海域天然氣水合物之探勘研究
- 臺灣西南海域天然氣水合物之探勘研究--高解析度震波測勘
- 新能源研究--臺灣西南海域天然氣水合物之震測資料處理與特殊分析
- Determining Elastic Properties from Seismic Reflection Surveys Using Pre-stack Depth Migration, Residual Move-out, Perturbation, and Amplitude versus Angle Analysis
- Surface Geology and Biology at the Head of Kaoping Canyon off Southwestern Taiwan
頁籤選單縮合
題 名 | Geological Study of Active Cold Seeps in the Syn-Collision Accretionary Prism Kaoping Slope off SW Taiwan=臺灣西南海域高屏斜坡同碰撞增積岩體內活躍冷泉地質研究 |
---|---|
作 者 | 黃奇瑜; 簡至暐; 趙美訓; 李紅春; 飯塚義之; | 書刊名 | Terrestrial, Atmospheric and Oceanic Sciences |
卷 期 | 17:4 民95.12 |
頁 次 | 頁679-702 |
專 輯 | 南海與臺灣鄰近地區之天然氣水合物研究專刊 |
分類號 | 354.3 |
關鍵詞 | 臺灣西南海域; 增積岩; 冷泉; Cold seep; Gas hydrate; Accretionary prism; Authigenic carbonate; Offshore SW Taiwan; |
語 文 | 英文(English) |
英文摘要 | Pogonophoran tube worms, elongated pyrite tubes and authigenic carbonate nodules are used to evaluate the occurrence of potential cold seeps in the syn-collision accretionary prism Kaoping Slope off SW Taiwan. At least two species of pogonophoran tubeworms were found in surface and core sediments. Pyrites occur in three different forms: fillings inside foraminiferal chambers, cements between calcareous microfossils, and elongated tubes. The bottom water off SW Taiwan is aerobic, but authigenic pyrites are found in the surface sediments at several sites, suggesting the existence of local reducing environments enabling the formation of pyrites. These environments are most likely caused by the occurrence of active cold seeps where methane expulses. Authigenic carbonates with highly depleted carbon isotope values (-54 to -430 00) were found at more than 5 locations, in agreement with a methane-derived source for the carbon. Integrating these geological and biological results, this study demonstrates that there are active cold seeps with methane expulsions in several anticline hinge zones east of the associated thrust faults in water depths of 800 - 1500 m of the frontal syn-collision accretionary prism Kaoping Slope. The existence of these high potential active cold seep sites is also supported by the occurrences of distinct bottom simulating reflectors (BSRs), shallow sulfate-methane interface and high concentrations of dissolved methane in bottom water. |
本系統中英文摘要資訊取自各篇刊載內容。