This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Geological map Britain William Smith . delineation of the strata of England and Wales with part of Scotland The first geological map of Britain published by William Smith in livescience php pic firstmap LiveScience Image Gallery Scan by the Library Foundation Buffalo and Erie County Public Library Image now at livescience html