GENERATION OF SHORT CHAIN ORGANIC-ACID ANIONS IN HYDROTHERMALLY ALTERED SEDIMENTS OF THE GUAYMAS BASIN, GULF OF CALIFORNIA

被引：84

作者：

MARTENS, CS

机构：

来源：

APPLIED GEOCHEMISTRY | 1990年 / 5卷 / 1-2期

关键词：

D O I：

10.1016/0883-2927(90)90037-6

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

An initial investigation of the concentration distribution of short chain organic acid anions in hydrothermally altered sediments of the Guaymas Basin reveals the presence of high concentrations of acetate and propionate relative to normal marine sediments. Acetate and propionate concentrations appear to vary as a function of sediment temperature and reach concentrations >1100 and 200 μm, respectively at temperatures > 100°C. As in previously studied oil field formation waters, these acid anions probably play a key role in the generation of CO2 and hydrocarbons gases, hydrogen ion (pH) buffering, the complexing of aqueous ions, and mineral dissolution and precipatation. At temperatures <100°C these and other acid anions should be important substrates for heterotrophic bacterial processes, including sulfate reduction. © 1990.

引用

页码：71 / 76

页数：6

共 22 条

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