Subject ASC0003s4j
The geological magazine, or, Monthly journal of geology.
[Decade 1]:v. 1 (1864), Page 237 (1864)
Smithsonian Libraries
BHL Page 30935511
Keywords
section strata layer bed rhaetic penarth bristow etheridge june 1864 lias limestone fossil shale band argillo clay fish scale marl concretion decompose green keuper red Bristol rock deposit. beds Rhaetic beds geological cross section Penarth Riletic