Geological Structures That Have Control on Groundwater Occurrence of Chamarajanagar Taluk, Chamarajanagar District, Southern Karnataka
نویسنده
چکیده
Geology of this area is ranging from Precambrian age for the rocks of granite, gneisses, schist and quartzite rocks, to recent age overlain by thick layers of alluvial deposits. This study aims to evaluate geological and structural influences on groundwater of Chamarajanagar taluk. It is an essential resource in outcrop and structures of the area, because of local field conditions, such as rock type and complex structure. The rocks comprise the major hydrogeological units of the deep groundwater system in the study area. The tectonics was important in establishing the distribution of the rocks that control the present flow patterns of groundwater. The study area is affected by tectonic that caused faulting, folding, and fracturing. The main structures that are investigated include faults, fractures, folds etc. These structures greatly influence the groundwater occurrence and flow. Two types of folds (anticline and syncline) act as accumulation and drainage stream channels of groundwater flow and also act as aquifer in the study area. Structural geology observed in the study of fractures in drill holes, the subsurface structures about 150 m200 m depth at the boreholes are similar to surface structure, which have been helpful in assessing the surface structure.
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