Hydrothermal clays of the geothermal fields of South Kamchatka: A new approach and study results
Using the Pauzhetka and Nizhnee Koshelevskoe geothermal deposits (South Kamchatka), we studied physical-chemical characteristics of hydrothermal clays that form thick (on average, 1.5–1.8 m) and spacious (up to few km 2 in area) subsurface horizon with peculiar petrophysical and mineralogical-geoche...
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Published in: | Geochemistry international 2012-04, Vol.50 (4), p.344-357 |
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Main Authors: | , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | Using the Pauzhetka and Nizhnee Koshelevskoe geothermal deposits (South Kamchatka), we studied physical-chemical characteristics of hydrothermal clays that form thick (on average, 1.5–1.8 m) and spacious (up to few km
2
in area) subsurface horizon with peculiar petrophysical and mineralogical-geochemical properties. It was established that the properties of hydrothermal clays are determined by their micro- and nanostructure, which is made up of nanoparticles of aluminosilicates, sulfates, accessory and ore minerals (primarily, sulfides and iron oxides), and amorphous phases. The subsurface horizon of hydrothermal clays represents a long-lived (up to 10 ka and more) highly dynamic colloidal-dispersed mineralogical-geochemical system, which reflects the interaction of deep-seated metalliferous fluids with geological medium in the supergene zone of geothermal deposits. |
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ISSN: | 0016-7029 1556-1968 |
DOI: | 10.1134/S0016702912020073 |