Mineralogy and Physical Properties of Cored Se diments from the Gas Hydrate Potential Area of Offshore Southwestern Taiwan

Cored sediments from the gas hydrate prospect area offshore southwestern Taiwan exhibit porosities, water contents, and bulk densities comparable to sediments in other gas-hydrate potential areas. Short-distance transport and rapid deposition of the sediments are implied by their poor sorting and de...

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Main Authors: Wei-Teh Jiang, Ju-Chin Chen, Bo-Jiun Huang, Chun-Jung Chen, Yung-Tan Lee, Pin-Ru Huang1, Chieh-Chia Lung, Shao-Wei Huang
Format: Article
Language:English
Published: Springer 2006-01-01
Series:Terrestrial, Atmospheric and Oceanic Sciences
Subjects:
Online Access: http://tao.cgu.org.tw/images/attachments/v174p981.pdf
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author Wei-Teh Jiang
Ju-Chin Chen
Bo-Jiun Huang
Chun-Jung Chen
Yung-Tan Lee
Pin-Ru Huang1
Chieh-Chia Lung
Shao-Wei Huang
author_facet Wei-Teh Jiang
Ju-Chin Chen
Bo-Jiun Huang
Chun-Jung Chen
Yung-Tan Lee
Pin-Ru Huang1
Chieh-Chia Lung
Shao-Wei Huang
author_sort Wei-Teh Jiang
collection DOAJ
description Cored sediments from the gas hydrate prospect area offshore southwestern Taiwan exhibit porosities, water contents, and bulk densities comparable to sediments in other gas-hydrate potential areas. Short-distance transport and rapid deposition of the sediments are implied by their poor sorting and detrital and clay mineralogy. These features and the organicrich nature of the sediments present an environment suitable for formation of gas hydrates. High methane concentrations of porewaters and gas-escape structures of the sediments further imply possible occurrence of gas hydrates in the region. Prominent overgrowth microstructures on authigenic pyrite framboids at shallow depths are consistent with sulfate reduction and pyrite precipitation related to migration and oxidation of methane possibly released from gas hydrate zones at later stages of early diagenesis.
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spelling doaj.art-92d184670e9e46249718679b6dcf9f002022-12-22T02:10:20ZengSpringerTerrestrial, Atmospheric and Oceanic Sciences1017-08392311-76802006-01-0117498110.3319/TAO.2006.17.4.981(GH)Mineralogy and Physical Properties of Cored Se diments from the Gas Hydrate Potential Area of Offshore Southwestern TaiwanWei-Teh JiangJu-Chin ChenBo-Jiun HuangChun-Jung ChenYung-Tan LeePin-Ru Huang1Chieh-Chia LungShao-Wei HuangCored sediments from the gas hydrate prospect area offshore southwestern Taiwan exhibit porosities, water contents, and bulk densities comparable to sediments in other gas-hydrate potential areas. Short-distance transport and rapid deposition of the sediments are implied by their poor sorting and detrital and clay mineralogy. These features and the organicrich nature of the sediments present an environment suitable for formation of gas hydrates. High methane concentrations of porewaters and gas-escape structures of the sediments further imply possible occurrence of gas hydrates in the region. Prominent overgrowth microstructures on authigenic pyrite framboids at shallow depths are consistent with sulfate reduction and pyrite precipitation related to migration and oxidation of methane possibly released from gas hydrate zones at later stages of early diagenesis. http://tao.cgu.org.tw/images/attachments/v174p981.pdf Gas hydrateTaiwanPorosityDensityClay mineralsPyrite
spellingShingle Wei-Teh Jiang
Ju-Chin Chen
Bo-Jiun Huang
Chun-Jung Chen
Yung-Tan Lee
Pin-Ru Huang1
Chieh-Chia Lung
Shao-Wei Huang
Mineralogy and Physical Properties of Cored Se diments from the Gas Hydrate Potential Area of Offshore Southwestern Taiwan
Terrestrial, Atmospheric and Oceanic Sciences
Gas hydrate
Taiwan
Porosity
Density
Clay minerals
Pyrite
title Mineralogy and Physical Properties of Cored Se diments from the Gas Hydrate Potential Area of Offshore Southwestern Taiwan
title_full Mineralogy and Physical Properties of Cored Se diments from the Gas Hydrate Potential Area of Offshore Southwestern Taiwan
title_fullStr Mineralogy and Physical Properties of Cored Se diments from the Gas Hydrate Potential Area of Offshore Southwestern Taiwan
title_full_unstemmed Mineralogy and Physical Properties of Cored Se diments from the Gas Hydrate Potential Area of Offshore Southwestern Taiwan
title_short Mineralogy and Physical Properties of Cored Se diments from the Gas Hydrate Potential Area of Offshore Southwestern Taiwan
title_sort mineralogy and physical properties of cored se diments from the gas hydrate potential area of offshore southwestern taiwan
topic Gas hydrate
Taiwan
Porosity
Density
Clay minerals
Pyrite
url http://tao.cgu.org.tw/images/attachments/v174p981.pdf
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