Isotopic Analysis- Fluid At Valles Caldera - Sulphur Springs Geothermal Area (Musgrave, Et Al., 1989)
Exploration Activity: Isotopic Analysis- Fluid At Valles Caldera - Sulphur Springs Geothermal Area (Musgrave, Et Al., 1989)
|Exploration Activity Details|
|Location||Valles Caldera - Sulphur Springs Geothermal Area|
|Exploration Technique||Isotopic Analysis- Fluid|
|Activity Date||- 1989|
A series of core holes were drilled from 1984 to 1988 as a part of the Continental Scientific Drilling Program (CSDP) to better understand the stratigraphy, structure, hydrothermal alteration, and subsurface architecture of the Valles caldera. Several authors have reported results from these core holes, including Goff et al. (1986, 1987), Gardner et al. (1987, 1989), Hulen & Nielson (1985), Hulen et al. (1988, 1989), Musgrave et al. (1989), Rowley et al. (1987), Shevenell et al. (1988), and Starquist (1988).
Seven water samples collected from VC-1 and VC-2A were analyzed for their major element and isotopic contents. Water sampling methods are as follows: '1) 125-mL filtered unacidified water for anions; 2) 125-mL filtered acidified water for cations; 3) a 500-mL glass bottle of unfiltered water for tritium analysis; 4) a 30-mL glass bottle of unfiltered water for stable isotope analysis; 5) a 60-mL bottle of filtered diluted (1:5) water for SiO2; 6) a 250-mL bottle of unfiltered water with 10 mL NH4OH saturated with SrCl2 added for determination of 13C-HCO3; and 7) a 250-mL bottle of unfiltered water with 5 mL of formaldehyde added for the determination of 18O-SO4' (Musgrave et al., 1989). Deuterium and 18O isotope analyses were completed by Jim Borthwick at the Stable Isotope Laboratory, Southern Methodist University, Dallas, TX. Tritium analyses were completed by H. Gote Ostlund at the Tritium Laboratory, University of Miami, FL.
- John A. Musgrave, Fraser E. Goff, Lisa Shevenell, Patricio E. Trujillo Jr, Dale Counce, Gary Luedemann, Sammy Garcia, Bert Dennis, Jeffrey B. Hulen, Cathy Janik, Francisco A. Tomei (1989) Selected Data from Continental Scientific Drilling Core Holes VC-1 and VC-2A, Valles Caldera, New Mexico