Recent research published in the journal “Geothermal Energy” sheds light on the geothermal systems within the Tingri-Tangra Yumco rift, located in the southern Tibetan Plateau. This study, led by Wei Liu from the Key Laboratory of Environmental Pollution Control and Remediation at Universities of Inner Mongolia Autonomous Region, provides crucial insights into the origins and circulation processes of geothermal fluids in this tectonically active region.
The research team analyzed the chemical and isotopic compositions of thermal spring water, revealing that the primary source of these geothermal fluids is meteoric water, which infiltrates from high-elevation areas above 6,000 meters. Liu explains, “Meteoric water could infiltrate to depths of about 1700–2900 m along the faults, whereby it is influenced by geothermal gradient and/or conductive heat transfer of magmatic fluids.” This interaction between surface water and deeper geological formations is essential for understanding how geothermal systems operate in this unique environment.
The study indicates that the thermal spring waters are predominantly of the sodium-bicarbonate type, influenced by the dissolution of silicate and carbonate minerals, as well as the mixing with deeper fluids. With reservoir temperatures ranging from 115 to 195 degrees Celsius, the geothermal systems in this area exhibit convection heat fluxes comparable to low-enthalpy geothermal systems found in southern Italy.
From a commercial perspective, this research opens several opportunities for the geothermal energy sector. The findings suggest that the Tingri-Tangra Yumco rift could be a viable site for geothermal resource exploration and development. The ability to harness geothermal energy not only provides a sustainable energy source but also contributes to local economic development. Geothermal energy is known for its low environmental impact and potential for providing stable electricity and heating solutions.
Moreover, the geochemical modeling conducted in this research identifies the water-mineral equilibria in the reservoir, which could guide future exploration efforts. The study highlights the importance of understanding the interactions between geothermal fluids and various rock types, including granitoid and carbonate formations in the Himalayas, as well as granite and volcanic rocks in the Lhasa block.
As the demand for renewable energy sources continues to grow, the insights gained from this study could be instrumental in advancing geothermal energy projects in the region. Liu’s work emphasizes the potential for developing geothermal resources in the Tingri-Tangra Yumco rift, paving the way for sustainable energy solutions in one of the world’s most geologically dynamic areas.
