211-2 Exploring Geothermal Resources in the Rio Grande Rift Region of Texas

Session: Geothermal Resources Research

Presenting Author:

Authors:

Abstract:

The Rio Grande Rift region of West Texas, New Mexico, and Colorado is a key geological feature known for its high heat flow and numerous hot springs, presenting significant potential for conventional and next-generation geothermal technology deployment. However, the Southern portion of the rift remains poorly understood. Based on our analysis, geothermal gradients in areas proximal to the rift system near the U.S.–Mexico border reach 40–50 °C/km, compared to ~30 °C/km in interior regions, away from the rift. These elevated gradients point to favorable conditions for harnessing both hydrothermal and advanced systems (enhanced geothermal systems [EGS] and closed-loop geothermal systems [CLGS]). We also integrate outcrops, boreholes, seismic, and gravity data to map the rift-related structures and the Precambrian basement, a potential target for EGS or CLGS. Our analysis reveals basement depths varying regionally from near surface exposure to more than 6 km (~20,000 ft) in the subsurface. The basement is highly heterogeneous, in terms of rock types and rock properties, which impacts resource estimates. 

Beyond purely scientific significance, the southern Rio Grande Rift presents compelling business opportunities for energy demand and market development. Regional industries, such as agriculture, water desalination, and manufacturing could benefit directly from reliable heat and power, while cross‑border energy initiatives could strengthen the local economy. We propose that regional partnerships augmented by targeted field pilots for relevant data acquisition, including drilling, temperature logging, and geophysical surveys, are critical next steps. These efforts will reduce uncertainty in reservoir mapping, provide accurate resource assessments, and build a foundation for commercial‑scale geothermal deployment in the region.

Geological Society of America Abstracts with Program. Vol. 57, No. 6, 2025

doi: 10.1130/abs/2025AM-10907

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