Subject ASC0003t0o
The geological magazine, or, Monthly journal of geology.
Decade 2:v.10 (1883), Page 66 (1883)
Harvard University, Museum of Comparative Zoology, Ernst Mayr Library
BHL Page 32513193
Keywords
Geological Surveyors - Section near Amwlch Lodge Sarn. showing Cambrian Shale. Intruive Dykes and Metamorphic geology Amwlch Lodge Sarn shale Cambrian metamorphic rocks cross section