Deposition of banded iron formations by anoxygenic phototrophic Fe(II)-oxidizing bacteria

被引：368

作者：

Kappler, A

Pasquero, C

Konhauser, KO

Newman, DK

机构：

[1] CALTECH, GPS Div, Pasadena, CA 91125 USA

[2] Univ Alberta, Dept Earth & Atmospher Sci, Edmonton, AB T6G 2E3, Canada

来源：

GEOLOGY | 2005年 / 33卷 / 11期

关键词：

banded iron formation; oxidation; anoxygenic photosynthesis; cyanobacteria;

D O I：

10.1130/G21658.1

中图分类号：

P5 [地质学];

学科分类号：

0709 ; 081803 ;

摘要：

The mechanism of banded iron formation (BIF) deposition is controversial, but classically has been interpreted to reflect ferrous iron [Fe(H)] oxidation by molecular oxygen after cyanobacteria evolved on Earth. Anoxygenic photoautotrophic bacteria can also catalyze Fe(H) oxidation under anoxic conditions. Calculations based on experimentally determined Fe(II) oxidation rates by these organisms under light regimes representative of ocean water at depths of a few hundred meters suggest that, even in the presence of cyanobacteria, anoxygenic phototrophs living beneath a windmixed surface layer provide the most likely explanation for BIF deposition in a stratified ancient ocean and the absence of Fe in Precambrian surface waters.

引用

页码：865 / 868

页数：4

共 34 条

[31] SUBOXIC DIAGENESIS IN BANDED IRON FORMATIONS [J].