Transactions of the Cambridge Philosophical SocietyUniversity Press, 1822 |
من داخل الكتاب
النتائج 1-4 من 4
الصفحة 138
... near Mawnan , and from Nare Point , which will be described among the rocks of the Lizard district ; we did not see any good example of greywacké on the southern coast of Cornwall . Many of the beds , which on their recent fracture ...
... near Mawnan , and from Nare Point , which will be described among the rocks of the Lizard district ; we did not see any good example of greywacké on the southern coast of Cornwall . Many of the beds , which on their recent fracture ...
الصفحة 295
... Nare point , Nare point on the south side of the Helford river . Immediately on landing , chan . not many hundred feet from that headland , we found a low cliff , chiefly composed of yellow siliceous sand , containing many frag- ments ...
... Nare point , Nare point on the south side of the Helford river . Immediately on landing , chan . not many hundred feet from that headland , we found a low cliff , chiefly composed of yellow siliceous sand , containing many frag- ments ...
الصفحة 296
... Nare point . We however observed repeated instances of a fine grained and somewhat ferruginous sand - stone . Masses of this kind are the constant associates of a greywacké formation , and are to be considered as examples of that rock ...
... Nare point . We however observed repeated instances of a fine grained and somewhat ferruginous sand - stone . Masses of this kind are the constant associates of a greywacké formation , and are to be considered as examples of that rock ...
الصفحة 325
... Nare Point . At the same time there can be no doubt but that the slate between Loe - Bar and Bollerium , is coeval and conti- nuous with the formation which stretches from the Helford river to Porthalla . Comparing all these strata with ...
... Nare Point . At the same time there can be no doubt but that the slate between Loe - Bar and Bollerium , is coeval and conti- nuous with the formation which stretches from the Helford river to Porthalla . Comparing all these strata with ...
طبعات أخرى - عرض جميع المقتطفات
عبارات ومصطلحات مألوفة
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