 | Geological Society of London - Electronic journals - 1904 - 748 pages
...phenocrygta are represented by pseudomorphs in carbonate. Tbe microlitic felspars of the groundmass are colourless, but they no longer show their characteristic...no doubt whatever that the original rock was an oli vine- basalt.' Most of our sections from Spring Cove did not show the carbonatepseudomorphs above referred... | |
 | Geological Society of London - Electronic journals - 1904 - 732 pages
...phenocrysts are represented by pseudomorphs in carbonate. The microlitic felspars of the ground urn?* are colourless, but they no longer show their characteristic...been perfectly preserved, and there can be no doubt whaterer that the original rock was an olivine- basalt.' Most of our sections from Spring Cove did... | |
 | Geological Survey of Great Britain - Geology - 1899 - 242 pages
...phenocrysts are represented by pseudomorphs in carbonate. The microlitic felspars of the groundmass are colourless, but they no longer show their characteristic...be no doubt whatever that the original rock was an olivine-basalt." On the rugged upper surface of this basalt the limestones have been laid down in the... | |
 | Geological Survey of Great Britain - Geology - 1899 - 246 pages
...phenocrysts are represented by pseudomorphs in carbonate. The microlitic felspars of the groundmass are colourless, but they no longer show their characteristic...be no doubt whatever that the original rock was an olivine-basalt." On the rugged upper surface of this basalt the limestones have been laid down in the... | |
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Weston-super-Mare [E. 3212 (23)], is a finegrained, chocolate-coloured rock, composed of pseuaomorphs after olivine, and probably augite, in a groundmass showing microlitic structure. The phenocrysts are represented by pseudomorphs in carbonate. The microlitic... 