Wikipedia contributors. (2023, September 10). Bedrock. In Wikipedia, The Free Encyclopedia. Retrieved October 29, 2023, from https://en.wikipedia.org/w/index.php?title=Bedrock&oldid=1174679210
https://github.com/davepinch/pinchy.cc/blob/master/content/topics/geology/rocks/bedrock/definition/snippet-definition-1-1.md
Bedrock (Wikipedia) In geology, bedrock is solid rock that lies under loose material (regolith) within the crust of Earth or another terrestrial planet.