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The Central Geological Service (formerly Geology stream of GSI) was constituted as an Organized Group ‘A’ Gazetted Service as per DOPT OM No. I-11019/12/2008-CRD dated 19/11/2009 by the Cadre Controlling Authorities. GSI is organized group 'A' service since 1982 as per DoPT O.M.No.5/12/79-PP-II dated 31.07.1982 and schedule -I.
The location map of the Dharwar Craton. The shaded area represents the Dharwar Craton. Generated from GeoMapApp (Ryan et al., 2009). [1]The Dharwar Craton is an Archean continental crust craton formed between 3.6-2.5 billion years ago (), which is located in southern India and considered the oldest part of the Indian peninsula.
The Main Central Thrust is a major geological fault where the Indian plate has pushed under the Eurasian plate along the Himalaya.The fault slopes down to the north and is exposed on the surface in a NW-SE direction (strike).
Localized geology and geomorphology topics for various parts of the Himalaya are discussed on other pages: Geology of Nepal; Zanskar is a subdistrict of the Kargil district, which lies in the eastern half of the Indian union territory of Ladakh. Indus River - the erosion at Nanga Parbat is causing rapid uplifting of lower crustal rocks; Mount ...
In geology, a dike or dyke is a sheet of rock that is formed in a fracture of a pre-existing rock body. Dikes can be either magmatic or sedimentary in origin. Magmatic dikes form when magma flows into a crack then solidifies as a sheet intrusion, either cutting across layers of rock or through a contiguous mass of rock.
Due to continental drift, the India Plate split from Madagascar and collided with the Eurasian Plate resulting in the formation of the Himalayas.. The earliest phase of tectonic evolution was marked by the cooling and solidification of the upper crust of the earth's surface in the Archaean Era (prior to 2.5 billion years) which is represented by the exposure of gneisses and granites especially ...
The following outline is provided as an overview of and topical guide to geology: . Geology – one of the Earth sciences – is the study of the Earth, with the general exclusion of present-day life, flow within the ocean, and the atmosphere.
Solidified lava flow in Hawaii Sedimentary layers in Badlands National Park, South Dakota Metamorphic rock, Nunavut, Canada. Geology (from Ancient Greek γῆ (gê) 'earth' and λoγία () 'study of, discourse') [1] [2] is a branch of natural science concerned with the Earth and other astronomical objects, the rocks of which they are composed, and the processes by which they change over time. [3]