Subject ASC0001dnw
The Quarterly journal of the Geological Society of London.
v.49 (1893), Page 554 (1893)
Natural History Museum Library, London
BHL Page 45959198
Keywords
geology dyke tormore augite andesite pitchstone porphyry dacite quartz felsite sandstone composite dyke rock plan Northern Composite Dyke Tormore augite-andesite pitchstone-porphyry Dacite quartz-felsite