Transactions of the Cambridge Philosophical SocietyUniversity Press, 1822 |
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الصفحة 101
... Cove and Tol - Pedn - Penwith , It was from appearances like these , that De Luc was led to form an opinion that the granite of Cornwall was stratified . Had he indulged less in his favourite hypothesis ; and made a more ex- tended ...
... Cove and Tol - Pedn - Penwith , It was from appearances like these , that De Luc was led to form an opinion that the granite of Cornwall was stratified . Had he indulged less in his favourite hypothesis ; and made a more ex- tended ...
الصفحة 107
... Cove and Land's End ; we not only meet with these schorl - rock veins , but with some other phenomena of which it is difficult to convey an adequate idea by mere description . Large irregular masses are observed to stand out from the ...
... Cove and Land's End ; we not only meet with these schorl - rock veins , but with some other phenomena of which it is difficult to convey an adequate idea by mere description . Large irregular masses are observed to stand out from the ...
الصفحة 111
... Cove . 7. About half a mile farther west near Carn Boscawen . 8. At the end of Whitesand Bay . Covered at high water . 9. Cape Cornwall . 10. Pendein Cove . 11. About a quarter of a mile west of Polmear Porth . 12. Wicka Pool . The ...
... Cove . 7. About half a mile farther west near Carn Boscawen . 8. At the end of Whitesand Bay . Covered at high water . 9. Cape Cornwall . 10. Pendein Cove . 11. About a quarter of a mile west of Polmear Porth . 12. Wicka Pool . The ...
الصفحة 114
... cove is formed by two projecting masses of granite . On descending , during low water , to the margin of the sea , we find all the intermediate space occupied by nearly horizontal beds of killas which are soft , micaceous , and in a ...
... cove is formed by two projecting masses of granite . On descending , during low water , to the margin of the sea , we find all the intermediate space occupied by nearly horizontal beds of killas which are soft , micaceous , and in a ...
الصفحة 115
... Cove and extends to the neighbourhood of Carn - Bos- cawen , may be considered as another good example of the facts we are now considering . From one end to the other , the slaty beds have nearly an uniform dip to a point between east ...
... Cove and extends to the neighbourhood of Carn - Bos- cawen , may be considered as another good example of the facts we are now considering . From one end to the other , the slaty beds have nearly an uniform dip to a point between east ...
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ABCD acid angle Apophyllite appearance axis ball beds carbonate of lime centre character chlorite schist clay slate cliffs coast colour compact composed considerable Cornwall Cove crystalline crystals cube cylinder decomposing decomposition described deviation direction distance district dyke earthy East equation examination exhibited Fellow felspar fissures formation fracture fragments function Galvanic gazometer granite granite veins granular green green-stone greywacké Helford river horizontal hornblende hydrogen inches instance intermixed irregular killas laminæ limestone Llanbabo Llaneilian Llanerchymedd Llanfaelog Llangefni Llanrhyddlad magnetic mass mica mineral muriate Nare point nature nearly needle North observed occur old red sandstone parallel particles passing perpendicular phenomena piston plane plate polarization porphyritic portion present pyroxene quartz quartz rock resembling Rhoscolyn schistose schorl serpentine side slaty South specimens steatite strata structure substance surface texture trace Trin ureters variety vertical whole wire