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Southeastern Section - 63rd Annual Meeting (10–11 April 2014)

Paper No. 14
Presentation Time: 8:00 AM-12:00 PM

GEOTHERMOMETRY OF TWO HOT SPRINGS IN WESTERN IRAN


RAFIGHDOUST, Yasaman1, ECKSTEIN, Yoram2, MOUSSAVI-HARAMI, Reza1, MAHBOUBI, Asadollah1 and MAHMOUDI GHARAEI, Mohammad Hossein1, (1)Geology, Ferdowsi university of Mashhad, department of Geology, Ferdowsi university of Mashhad, Iran, Mashhad, Iran, (2)Department of Geology, Kent State University, McGilvrey Hall, Kent, OH 44242, yrafighdoust_gst@kent.edu

Geothermometry, utilizing the chemical and isotope composition of the hot springs and fumarole discharges is used to estimate subsurface mineral/rock equilibrium temperature, i.e., temperatures expected to be encountered by drilling.

Reservoir temperatures of Tang-Bijar Oilfield hot springs located at the Zagros Fold and Thrust Belt of western Iran, including Sr17 (Tang-Hamam) and Tb3 (Tang-Bijar), were estimated by using Quartz (Fournier, 1977) and cation geothermometers (Fournier, 1979; Fournier and Potter, 1979) Na–K–Mg triangular diagram (Giggenbach, 1988) and Na–K–Mg–Ca square diagram (Arnórsson, 2000). water of Sr17 hot spring suggests either partial equilibration at temperature below 70°C (“immature waters”), or mixing and dilution by cold recharge water on the upward flow-path to the ground surface. The brackish water of the Tb3 hot spring are seemingly in full equilibrium (“mature waters”) with the local evaporitic formations at the temperatures between 75 and 100°C.

Session No. 31--Booth# 21

Geochemistry (Posters)
Friday, 11 April 2014: 8:00 AM-12:00 PM
Latham A/B/C (Inn and Conference Center at Virginia Tech)
Geological Society of America Abstracts with Programs. Vol. 46, No. 3, p.79
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