Rajmahal hills
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Volcanic activity during the Jurassic resulted in the formation of the Rajmahal Traps. The hills are approximately located at Script error: No such module "Coordinates"..[3]
The Rajmahal hills are named after the town of Rajmahal which lies in the eastern Jharkhand. The hills trend north-south with an average elevation of Script error: No such module "convert"., from the Sahibganj district to the Dumka district. The River Ganges wanders around the hills changing the direction of flow from east to south.
Francis Buchanan-Hamilton travelled through the Rajmahal hills in the early 19th century. He described the hills that seemed impenetrable in a zone where few travellers had been. He wrote that everywhere people were hostile, apprehensive of officials and unwilling to talk and, in some cases, left their villages and absconded.[4]
Fossils
The plant fossil bearing inter-trappean beds of the Rajmahal Formation have been declared National Geological Monuments of India by the Geological Survey of India (GSI), for their protection, maintenance, promotion and the enhancement of geotourism.[5] The Rajmahal hills contain plant fossils which are 68 to 145 million years old. The fossils here have attracted geologists and palaeobotanists from all over the world. The Birbal Sahni Institute of Palaeobotany in Lucknow has a collection of them. There are fears of these fossils disappearing, as the state government in 2018 gave a mining lease in the area to private companies.[2]
References
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- ↑ Themess in Indian History, Part III, p 266 (Using Francis Buchanan, Journal of Francis Buchanan Kept During the Survey of the Districtof Bhagalpur, 1930, Government Printing, Bihar and Orissa, Patna.)
- ↑ National Geological Monument, from Geological Survey of India website
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- A Monograph on National Geoheritage Monuments of India, INTACH, March 2016
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