Abstract Globally, the largest geothermal resources are linked to crystalline basement, which could be exploited using Enhanced Geothermal Systems (EGS). The planned underground laboratory GeoLaB aims facilitate large-scale application of EGS technologies by performing in-situ high-flowrate experiments on fault zones. Tromm Granite at northwestern margin Upper Rhine Graben was preselected as on...

Positive and negative magnetic anomalies occupied the total aeromagnetic (TM) map of Harrat ad Danun area, Saudi Arabia. Reduction to pole (RTP) maps display range values (−312.4 209.4 nT) that vary in shape, size, magnitude. These generally follow NNW–SSE (Red Sea axis trend), NE–SW, NNE–SSW trends. The NNW-SSE linear positive could be brought on by buried faults, shear zones, or subsurface di...

vartun geothermal region (vgr) is located in west central part of iran, 300 km in the southeast of tehran. vgr area is 277 km2and there are some geothermal surface manifestations such as warm springs and travertine deposits. there are three warm springs which their temperature varies from 35.3 to 43.1 °c. their ph is a little bit acidic and is about 6.1-6.2. based on geothermometery studies var...