Fluid Inclusion Analysis At Raft River Geothermal Area (2011)
Exploration Activity: Fluid Inclusion Analysis At Raft River Geothermal Area (2011)
|Exploration Activity Details|
|Location||Raft River Geothermal Area|
|Exploration Technique||Fluid Inclusion Analysis|
Hydrogen isotope values of muscovite (δDMs ∼–100‰) and fluid inclusions in quartz (δDFluid ∼–85‰) indicate the presence of meteoric fluids during detachment dynamics. Recrystallized grain-shape fabrics and quartz c-axis fabric patterns reveal a large component of coaxial strain (pure shear), consistent with thinning of the detachment section. Therefore, the high thermal gradient preserved in the Raft River detachment reflects the transient geotherm that developed owing to shearing, thinning, and the potentially prominent role of convective flow of surface fluids.
- Gottardi, R.; Teyssier, C.; Mulch, A.; Vennemann, T.W.; Wells, M.L. (1 August 2011) Preservation of an extreme transient geotherm in the Raft River detachment shear zone