Subject ASC00011f1

The Quarterly journal of the Geological Society of London.
v.67 (1911), (1845)
Smithsonian Libraries
BHL Page 39749348

Keywords

geological fragments photograph of dyke "Upper Gaerfawr Grits"[sic.] microscopic view dyke igneous rock feldspar Upper Gaerfawr grits Welshpool Dyke geology microscopic image profile Welshpool dyke sediments igneous felspathic fragments photo microscope slide UPPER GAERFAWR grits sediment sedimentary rock Bemrose Collo. A. W. Welshpool intrusion trees outcrop exposure cliff

Contributors

Species