Create the page ""Purley Shale Formation"" on this wiki! See also the page found with your search.
...(E3 and EO) which is grey mudstone but with red or maroon mudstone of the Purley Shale Formation (E2) at the base. Deltaic deposits were gradually replaced by beach and sha
11 KB (1,758 words) - 16:01, 28 July 2015