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The Origin and Evolution of Sulfur in an Archean Volcano-Sedimentary Basin, Deer Lake Area, Minnesota

机译：明尼苏达州鹿湖地区太古宙火山 - 沉积盆地硫的成因与演化

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Rocks of the Deer Lake area, northcentral Minnesota, consist of Archean (age greater than 2.6 billion years) metasediments and metavolcanics intruded by mafic layered sills. Geologic and sulfur isotopic data suggest that sulfides in the sediments are bacteriogenic, having formed in response to the activity of sulfate reducing bacteria during diagenesis. Deposition of the sediments appears to have occurred in a deep marine basin with restricted circulation of sea water. The bulk of the sulfur in the igneous rocks is of deep seated origin, but basal contacts of the sills show evidence of assimilation of biogenic sulfur from the intruded sediments. This assimilation of biogenic sulfur is the primary geochemical control of local Cu-Ni sulfide mineralization.

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作者
Nicol, D. L.;
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年度 1980
页码 p.1-61
总页数 61
原文格式 PDF
正文语种 eng
中图分类工业技术;
关键词
Biological evolution; Minnesota; River basins; Sedimentary rocks; Sulfur; Geochemistry; Igneous rocks; Mineralogy;

机译：生物进化;明尼苏达州;河流流域;沉积岩;硫;地球化学;火成岩;矿物学;

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The Origin and Evolution of Sulfur in an Archean Volcano-Sedimentary Basin, Deer Lake Area, Minnesota

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