Tectono-Geomorphic Features around Jaisalmer (Rajasthan)

The Jurassic to Quaternary succession of Jaisalmer region has formed horst and graben structures as a result of Neogene tectonic movements. The topography and long stretches of streams indicates influence of faults and regional lineaments. Deflections in the streams are due to faults present on either sides of the tilted blocks and the formations of flood plains adjoining the highlands can be attributed to horsts and grabens. Abrupt changes in the ground water levels in wells of the same hydrological formation are also inferred due to tilted blocks in the region.