Publication Type:

Miscellaneous

Authors:

Schindler, Michael; Singer, David M.

Source:

Rock and mineral coatings; records of climate change, pollution, and life, Mineralogical Society of America and Mineralogical Society of Great Britain and Ireland and Mineralogical Association of Canada and Geochemical Society and Clay Minerals Society, Volume 13, p.159-164 (2017)

ISBN:

1811-5209

Keywords:

bacteria, biogenic processes, chemical composition, chemical reactions, chemical weathering, Clay minerals, complexing, iron oxides, mineral composition, mineral surface, nanoparticles, Organic compounds, oxides, paleoenvironment, pollutants, porosity, sediments, sheet silicates, silicates, soils, solute transport, solutes, sorption, substrates, transport, weathering

Abstract:

Past and present (a)biotic soil processes can be preserved by mineral surface coatings, which can sequester contaminants in soils and sediments. The coatings can contain complex assemblages of nanometer-size minerals and organic components. The formation, composition, and morphology of these complex mineral assemblages depend on, and hence reflect, the mineralogical and chemical composition of the substrate they develop on and the environmental factors in the surrounding soils and sediments. Mineral surface coatings typically contain complex and variable porosities, many with regions of limited fluid flow. Low-flow conditions, combined with different nanometer-size phases in the interior of mineral surface coatings, allow coatings to sequester contaminant-bearing solutes, complexes, and nanoparticles.

Notes:

GeoRef, Copyright 2018, American Geological Institute.<br/>2017-050444<br/>microaerophilic taxa<br/>mineral surface coatings