Rajmahal Traps

The Rajmahal Traps is a volcanic igneous province in Eastern India, covering the parts of Jharkhand, West Bengal and Meghalaya.

Multiple layers of solidified lava made the 608-metre-thick (1,995 ft) Rajmahal Traps which are dipping 2–5° towards the north-east.

These faulted contacts, along with the Damodar Gondwana graben, form a triple junction at the mouth of the Bengal basin.

Over the epochs, the upper part of the lava deformed in a cold, brittle fashion and formed graben structures.

The assemblage includes Cladophlebis indica, Dictyozamites indicus, Taeniopteris spatulata, and Brachyphyllum rhombium.