Atlas of siliceous hot spring deposits (sinter) and other silicified surface manifestations in epithermal environmnets

Ayrton R. Hamilton, Kathleen A. Campbell & Diego M. Guido
Sinters, or siliceous hot spring deposits, are the terrestrial surface expressions of predominately low sulphidation epithermal systems. Sinter deposits form at the intersection of the water table and the Earth’s surface, where near-neutral pH alkali-chloride thermal fluids, oversaturated in silica, are expelled and chemically precipitate hydrothermal minerals and amorphous silica on biotic and abiotic surfaces. The silica precipitate has been observed in Archean to present day settings as bedded, erosion-resistant sinter mounds and sheet deposits,...
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