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| Chotanagpur Plateau | |
|---|---|
| Name | Chotanagpur Plateau |
| Settlement type | Plateau |
| Area km2 | 66000 |
| Country | India |
| State | Jharkhand, Bihar, Odisha, West Bengal, Chhattisgarh |
Chotanagpur Plateau The Chotanagpur Plateau is a hilly and plateau region in eastern India noted for its mineral wealth, tribal populations, and distinctive lateritic topography. The highlands influence river systems linked to the Ganges, Damodar River, Subarnarekha River, and Sone River, and the area has been central to industrialization around Jamshedpur, Ranchi, and Dhanbad. The plateau spans parts of Jharkhand, West Bengal, Odisha, Bihar, and Chhattisgarh and connects to the Deccan Plateau and Vindhya Range physiographic systems.
The plateau occupies roughly 66,000 km² and forms an extension of the Indian Shield underlain by Precambrian rocks of the Sikhote-Alin-age terranes and Archean complexes similar to those in the Bastar Craton, with exposures of granite, gneiss, schist and extensive laterite and basalt flows. Major hill ranges include the Dalma Hills, Hazaribagh Hills, and Panchet Hills, and escarpments feed tributaries of the Ganges River basin such as the Damodar River and Subarnarekha River. Soils on the plateau are typically red and ferruginous, related to laterization processes seen elsewhere on the Deccan Plateau and in the Eastern Ghats, supporting distinct drainage patterns and groundwater regimes similar to those in the Chota Nagpur mineral belt exploited since the British Raj era.
The climate is broadly tropical wet and dry with pronounced monsoon influence from the Bay of Bengal; winters are cooler due to elevation and proximity to the Tropical Cyclone track that affects eastern India. Rainfall is moderated by orographic lift over the Eastern Ghats and the plateau receives seasonal precipitation from the Southwest Monsoon and residual moisture from cyclonic depressions originating near the Bay of Bengal. Temperatures and forest fire regimes correlate with interannual variability linked to the El Niño–Southern Oscillation and large-scale patterns such as the Indian Ocean Dipole.
Archaeological evidence links the plateau to Paleolithic and Neolithic cultures discovered near sites comparable to Bhimbetka and excavations in the Chota Nagpur region have produced microliths and pottery paralleling finds at Chirand and Mehrgarh. The area figures in historic sources including records of the Magadha and later Maurya Empire and saw medieval interactions with the Nagvanshi and Kabul Shahi polities before becoming a focus of resource extraction during the East India Company and British Raj. 19th- and 20th-century movements such as the Tana Bhagat Movement and uprisings connected to the Santhal rebellion and Bhumij rebellion reflect social responses to colonial land policies and the expansion of mining and railways linked to Indian independence movement dynamics.
The plateau is home to numerous tribal and non-tribal communities including the Santhal, Munda, Oraon (Kurukh), Ho (people), Kharia, and Bhumij, alongside speakers of Hindi, Bengali, Odia, and Bihari languages. Cultural expressions include Traditional dances and instruments comparable to those performed at festivals like Karam, Sarhul, and harvest celebrations observed across Jharkhand and Bihar. Indigenous customary institutions interact with statutory frameworks such as the Panchayati Raj institutions and protections under the Fifth Schedule of the Constitution of India, and contemporary social movements have been organized through groups like the Jharkhand Mukti Morcha and unions active in mining centers such as Dhanbad.
The plateau is one of India's principal mineral provinces, hosting deposits of coal in the Jharia Coalfield and Bokaro Coalfield, iron ore near Noamundi and Gua, mica at Giridih, copper at Singhbhum, and uranium occurrences associated with the Bagjata and Jaduguda mines. Industrial towns such as Jamshedpur (home to Tata Steel), Bokaro (with Bokaro Steel Plant), and Ranchi have grown around mining and steelmaking, linked by infrastructure investments dating to projects by entities like the Tata Group and the Steel Authority of India Limited. Agriculture in terraced and valley soils produces rice, pulses, and oilseeds; forestry products including sal (Shorea robusta) timber and minor forest produce support local economies, while environmental concerns have prompted conservation actions by organizations including the Wildlife Institute of India and legal cases under the Indian Forest Act.
Vegetation ranges from dry deciduous forests dominated by Shorea robusta and Terminalia species to scrub and grassland mosaics; fauna includes emblematic mammals such as Indian elephant, tiger, leopard, gaur, and smaller mammals comparable to those in Palamau Tiger Reserve and Hazaribagh National Park. Avifauna includes migrants and residents seen at wetlands linked to plateau rivers and reservoirs, with biodiversity monitored by research programs associated with Zoological Survey of India and conservation initiatives sponsored by both state forest departments and national agencies such as the National Tiger Conservation Authority.
Transport corridors developed to serve mineral extraction include railways radiating from Ranchi, Jamshedpur, and Dhanbad connecting to the Howrah–Delhi main line and freight routes serving ports such as Kolkata Port and Paradip Port. Major highways include segments of the NH 33 and NH 43 (now renumbered) and airport connections at Ranchi Airport and Birsa Munda Airport have facilitated passenger and cargo movement. Infrastructure challenges such as land subsidence in mining areas and rural electrification have been addressed through projects by entities including the Rail Vikas Nigam Limited and initiatives tied to the Pradhan Mantri Gram Sadak Yojana.
Category:Plateaus of India Category:Geography of Jharkhand Category:Geology of India