https://scholars.lib.ntu.edu.tw/handle/123456789/297425
標題: | Sulfate reduction and iron sulfide mineral formation in the southern East China Sea continental slope sediment | 作者: | Lin, Saulwood Huang, Kuo-Ming Chen, Shin-Kuan |
關鍵字: | Continental slope; East China Sea; Organic carbon; Pyrite; Sedimentation rate; Sulfate reduction | 公開日期: | 十月-2002 | 卷: | 49 | 期: | 10 | 起(迄)頁: | 1837--1852 | 來源出版物: | Deep Sea Research Part I: Oceanographic Research Papers | 摘要: | Sulfate reduction rate, organic carbon and sulfide burial rate; organic carbon, carbonate carbon, and reactive iron contents; grain size; and sedimentation rate were determined in sediments of the southern East China Sea continental slope. The results show high sulfate reduction and pyrite sulfur burial rates in slope areas with high organic carbon and sedimentation rates. Unusually high rates of organic carbon deposition enhance sulfate reduction and pyrite sulfide burial in the region. Both sulfate reduction rates and pyrite sulfur burial rates increased linearly with increasing organic carbon burial rate, indicating that deposition of organic carbon on the slope is the primary controlling factor for pyrite formation. Abundant reactive iron indicated that iron is not limiting pyrite formation. Pyrite is the predominant sulfide mineral; however, acid volatile sulfide constituted up to 50% of total sulfide at some stations. Up to 240 μmol/g of pyrite sulfur and 5 mmol/m2/day of sulfate reduction rates were found in the slope sediment. Sulfate reduction rate and pyrite sulfur did not decrease with increasing overlying water depth. High organic carbon burial rates enhanced the sulfate reduction rate and subsequently the rate of pyrite sulfur burial in the slope region. As a result, the southern East China Sea continental slope environment is an efficient pyrite sulfur burial environment. © 2002 Elsevier Science Ltd. All rights reserved. |
URI: | http://scholars.lib.ntu.edu.tw/handle/123456789/297425 https://www.scopus.com/inward/record.uri?eid=2-s2.0-0036814494&doi=10.1016%2fS0967-0637%2802%2900092-4&partnerID=40&md5=78d6fc94cb050a97c8bebb2de21ceb87 |
DOI: | 10.1016/s0967-0637(02)00092-4 |
顯示於: | 海洋研究所 |
在 IR 系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。