| dc.description.abstract | This research was carried out in the Mineral Mountains, Utah, more precisely in the central
part of the Mineral Mountains where geothermal manifestations in the form of hot springs, cold
springs and fumaroles were found. This research aims to analyze the characteristics of the geothermal
system in the Mineral Mountains based on surface and subsurface geological information as well as
the characteristics of its reservoir.
The research was carried out using fluid chemistry data from well and manifestations samples,
inversion of gravity anomaly data and inversion of MT data which were analyzed and integrated with
geological data such as structure and stratigraphy in the research area to produce a conceptual model
of the Mineral Mountains geothermal system.
The results indicate that the Mineral Mountains are controlled by volcanic activity, pluton
placement, and faults. The Mineral Mountains are comprised of intrusive igneous rocks, Quaternary
volcanic products, as well as sediment ranging from Paleozoic to Cenozoic ages that fill the basin.
The characteristics of well fluid samples and manifestation samples indicate that the water is
chloride-type water with equilibrium levels ranging from partially equilibrium to fully equilibrium,
and originating from the same reservoir with an estimated reservoir temperature of 250°C ± 10°C.
From the conceptual model, it is found that the cap rocks appears on the surface with a thickness
around 200 m, the reservoir appear at an elevation of 1300 m with a thickness around 300 m, and the
heat source is hot intrusive rocks at an elevation of 1000 m with a thickness of more than 20,000 m.
Meteoric water enters the reservoir through recharge zones located to the east of the research area
via steeply dipping faults and exits through discharge zones located in the middle of the research area
via low-angle normal faults. | en_US |
