Subject ASC0003see
The geological magazine, or, Monthly journal of geology.
[Decade 1]:v. 7 (1870), Page 73 (1870)
Harvard University, Museum of Comparative Zoology, Ernst Mayr Library
BHL Page 32580428
Keywords
Mold Flintshire limestones limestone grit North Wales Trevor Sweeney millstone grit layer tilt strata flintshire mold cornel-fedw bryngwyn pen-y-mynydd carboniferoous limestone red white dark sandstone crystalline pebble fucoid marking massive sand bed