Artículo
Snapshot of hot-spring sinter at Geyser Valley, Wairakei, New Zealand, following anthropogenic drawdown of the geothermal reservoir
Watts Henwood, Nick; Campbell, Kathleen; Lynne, Bridget Y.; Guido, Diego Martin
; Rowland, Julie V.; Browne, Patrick R.L.
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Fecha de publicación:
07/2017
Editorial:
Pergamon-Elsevier Science Ltd
Revista:
Geothermics
ISSN:
0375-6505
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
From the 1950s, extraction of thermal fluids to generate electricity at Wairakei, Taupo Volcanic Zone, New Zealand, heralded a rapid transformation of surface manifestations at nearby Geyser Valley, 1 km NW of the power station. Active geysers and hot-springs fed by alkali-chloride waters ceased by 1968, replaced by acidic steam-dominated conditions. Field relationships indicate geothermal features are fault-controlled. Siliceous hot-spring (sinter) deposits represent spring-vent to distal marsh settings. The dominant mineralogy is opal-A, with some minor clay alteration. Some textures show silica dissolution and re-precipitation. Thus, only minor alteration and diagenesis has occurred, with vegetation overgrowing the extinct sinter.
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Articulos(CCT - LA PLATA)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - LA PLATA
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - LA PLATA
Citación
Watts Henwood, Nick; Campbell, Kathleen; Lynne, Bridget Y.; Guido, Diego Martin; Rowland, Julie V.; et al.; Snapshot of hot-spring sinter at Geyser Valley, Wairakei, New Zealand, following anthropogenic drawdown of the geothermal reservoir; Pergamon-Elsevier Science Ltd; Geothermics; 68; 7-2017; 94-114
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