from The Century Dictionary and Cyclopedia
- In geology, occurring between sheets of trap.
Sorry, no etymologies found.
Captain Nicholls (_Journal of Asiatic Soc. of Bombay_, vol. v, p. 614), studied and described certain trunks of palm-trees, whose silicified remains are found imbedded in the soft intertrappean mud - beds near Sâgar ....
The intertrappean fossils are all those of organisms which would occur in shallow fresh-water lakes or marshy ground.