Subject ASC000129q

The Quarterly journal of the Geological Society of London.
v.67 (1911), Page 188 (1845)
Smithsonian Libraries
BHL Page 39749014

Keywords

Skomer Island Pembrokeshire Wales Vulcanism Geology Rhyolite Felsite Soda-rhyolite Soda-felsite vulcanology soda-rhyolite soda-felsite obsidian chemicals loss on ignition volcanic sod-rhyolite elements obsidians volcano crystal lava rocks skomer rhyolite chemical composition Skomer volcanic series

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