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These weathering occurred along the joints of granite gneiss rocks. by Dr. Nitish Priyadarshi. geologist nitish.priyadarshi@gmail.com This site is located in Panchgagh falls some 35 kms from Ranchi.  Geomorphology of this area shows that its landscape is undulating; intersected with numerous streams and river.   Weathering causes the disintegration of rock near the surface of the earth. Plant and animal life, atmosphere and water are the major causes of weathering. Weathering breaks down and loosens the surface minerals of rock so they can be transported away by agents of erosion such as water, wind and ice. Differential weathering occurs when some parts of a rock weather at different rates than others.  

Around  Ranchi  city typical structures are encountered on the rocks. by Dr. Nitish Priyadarshi Below are the pictures of the typical weathering structures on the Rocks of the Ranchi city. Weathering   is the breaking down of   rocks ,   soils   and   minerals   as well as artificial materials through contact with the Earth's atmosphere ,   biota   and waters. Weathering occurs   in situ , or "with no movement", and thus should not be confused with   erosion , which involves the movement of rocks and minerals by agents such as water, ice, snow, wind and gravity. Two important classifications of weathering processes exist – physical and chemical weathering. Mechanical or physical weathering involves the breakdown of rocks and soils through direct contact with atmospheric conditions, such as heat, water, ice and pressure. The second classification, chemical weathering, involves the direct effect of atmospheric chemicals or biolog...