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10 quakes in 18 years in J'khand, claims geologist Jharkhand has experienced more than 10 tremors in 18 years though their intensity was mild to medium, geologist Nitish Priyadarshi claimed and suggested that newly constructed buildings in the state should be earthquake-resistant. 'Back-to-back tremors occurred for the first time in Jharkhand. The state has never experienced aftershocks,"Priyadarshi, a member of the Geological Society of India, said here.     He said the Chhotanagpur Plateau in Jharkhand represents a part of the Indian Peninsular field that is "stable cratonic block of the earth crust".     Craton is the stable interior portion of a continent characteristically composed of ancient crystalline basement rock and there is a belief that land above a cratonic block is generally shielded from earthquakes.     "The cause for concern is that there had been more than 10 mild to medium tremors occurred in the area since 1997," sai...

The aim of Geotourism is to make visitors aware of, and to gain some understanding of, the geological features that surround them. by Dr. Nitish Priyadarshi Geologist.  Geotourism is the kind of travel that sustains or enhances the geographical character of a place — its environment, culture, aesthetics, heritage, and the well-being of its residents. Geography—from which “geotourism” derives—is not just about where places are. It’s also about what places are. It’s about what makes one place different from the next. That includes not only flora and fauna, which is the realm of ecotourism, but also historic structures and archaeological sites, scenic landscapes, traditional architecture, and locally grown music, cuisine, crafts, dances, and other arts. Many people sum up that combination of elements as “sense of place.” Since most tourists travel with a variety of interests, geotourism’s holistic approach provides a synergistic effect unavailable to niches like adventure, eco-, o...

It is formed mainly by weathering and erosion. by Dr. Nitish Priyadarshi Geologist. Above pictures are of Dome gneiss hill. This typical dome-gneiss (locally known as dongris) 26 km from Ranchi on Ranchi-Bundu highway (85 0 27 ” longitude and 23 0 14 ” latitude) has slopes on all sides (the average inclination being about 40 degree to 50 degree). There is little soil but oozing moisture from rock foliae supports tuft grass except the entirely bare rocky surfaces. A dome is a curved formation or structure. It is shaped like half of a sphere. Imagine cutting an orange in half, and placing it cut-side-down on a table. This is the shape of a dome, although most domes in nature are not perfectly rounded. Some natural domes develop when magma from deep within the Earth pushes up surface rock layers. This type of geologic dome can form as magma intrudes between two layers of sedimentary rock. The magma creates a dome or triangle shape as it pushes the other layers apart. The hardened magma ...

 The Dassam Fall is a natural cascade across the Kanchi River. by Dr. Nitish Priyadarshi Geologist A waterfall is a place where water flows over a vertical drop in the course of a stream or river. Waterfalls are also called cascades. Waterfalls are commonly formed when a river is young. At these times the channel is often narrow and deep. When the river courses over resistant bedrock, erosion happens slowly, while downstream the erosion occurs more rapidly. As the watercourse increases its velocity at the edge of the waterfall, it plucks material from the riverbed. Whirlpools created in the turbulence as well as sand and stones carried by the watercourse increase the erosion capacity. This causes the waterfall to carve deeper into the bed and to recede upstream. Often over time, the waterfall will recede back to form a canyon or gorge downstream as it recedes upstream, and it will carve deeper into the ridge above it. The process of erosion, the wearing away of earth, plays an im...