The Quarterly Journal of the Geological Society of London, 19권The Society, 1863 Vols. 1-108 include Proceedings of the society (separately paged, beginning with v. 30) |
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li 페이지
... thin set of beds representing a particular sea - bottom at a particular time , whereas the Bala beds represent a great many thousands of sea - bottoms more or less regularly piled on each other very slowly . The question must therefore ...
... thin set of beds representing a particular sea - bottom at a particular time , whereas the Bala beds represent a great many thousands of sea - bottoms more or less regularly piled on each other very slowly . The question must therefore ...
3 페이지
... thin , and number about 300 all round the circumference . Examined with the lens , one perceives in the interseptal cells very thin and numerous partitions , which are marked exteriorly by very fine longitudinal striæ . The floors of ...
... thin , and number about 300 all round the circumference . Examined with the lens , one perceives in the interseptal cells very thin and numerous partitions , which are marked exteriorly by very fine longitudinal striæ . The floors of ...
6 페이지
... thin fan- shaped network , composed of a great number of small branches , the numerous bifurcations of which enable it to widen rapidly ; these small branches , which are all alike , are externally furnished with small , undulated ...
... thin fan- shaped network , composed of a great number of small branches , the numerous bifurcations of which enable it to widen rapidly ; these small branches , which are all alike , are externally furnished with small , undulated ...
7 페이지
... thin . I have been able to examine the lower valve in a single specimen only ; it is circular in form , entirely smooth , and feebly grooved in the middle . This character probably depends on the shape of the object to which the shell ...
... thin . I have been able to examine the lower valve in a single specimen only ; it is circular in form , entirely smooth , and feebly grooved in the middle . This character probably depends on the shape of the object to which the shell ...
34 페이지
... thin foliation ; with the latter is also associated a cream - coloured arenaceous schist . The schists are situated on a ridge of hills varying from 100 to 400 feet in height . Excavations , which can scarcely be called shafts , both ...
... thin foliation ; with the latter is also associated a cream - coloured arenaceous schist . The schists are situated on a ridge of hills varying from 100 to 400 feet in height . Excavations , which can scarcely be called shafts , both ...
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abundant Ammonites angle Anthracosaurus Antigua appear beds calices Cambrian carapace Carboniferous character clay clay-slate Coal-measures colour conglomerate containing corallites Corals Crustacean delta deposits described Devonian diameter district east Estheria Eurypterus feet formation fossils fragments genera genus Geol Geological Society geologists glaciers Glen Roy gneiss granite Graptolites gravel greenish-grey grey greywacke hill Huronian inch Journ Lake limestone Loch Lower Ludlow margin marl mass mica-slate micaceous miles mineral Miocene nearly noticed occur Old Red Sandstone Oolite organic remains Permian plate Poaka Poaka Beck portion present probably Prof Quart quartzite R. I. Murchison Ragstone Rhynchonella ridge river rocks sand schist Scotland seen septa shales shells side Silurian Skiddaw slates species specimens stone strata stream surface teeth Tertiary thickness thin tion transverse unconformity Upper Lias valley valves vertebræ
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170 페이지 - P. pileiformis, M'Chesney, Descr. of New Species of Fossils from the Palaeozoic Rocks of the Western States of America, p. 40, 1849. P. Cora, Dav., Mon. Carb. Brach. pi. 36. fig. 4, pi. 42. fig.
xliv 페이지 - geology or palaeontology are able to show to the contrary, a Devonian fauna and flora in the British Islands may have been contemporaneous with Silurian life in North America, and
xx 페이지 - To promote researches concerning the mineral structure of the earth, and to enable the Council of the Geological Society to reward those individuals of any country by whom such researches may hereafter be made,"—" such individual not being a Member of the Council." 1831. Mr. William Smith. 1835. Dr. GA Mantell. 1836. ML Agassiz.
xlii 페이지 - Break very nearly complete both in genera and species, and probable unconformity. Tremadoc Slate. Break very nearly complete both in genera and species, and probable unconformity. Llandeilo and Caradoc beds. Large break, especially in species, and probable unconformity. Lower Llandovery beds. Break and
221 페이지 - Hull, E. The Coal-fields of Great Britain; their history, structure, and resources; with notices of the coal-fields of other parts of the world.
468 페이지 - Among the Reptilian remains found in erect trees at the South Joggins, there have occurred several portions of skeletons, •which, from their sculptured cranial bones, plicated teeth, and the forms of their scales and limb-bones, I have referred to the genus Dendrerpeton, but to individuals of much smaller size than the full-grown specimens of
xlii 페이지 - unconformity. Wenlock Shale, &c. Each of these breaks, in my opinion, necessarily implies a lost epoch, stratigraphically quite unrepresented in our area, and the life of which is only 'feebly represented in some cases by the fossils common to the underlying and overlying formations. But
323 페이지 - the strata of deltas, and calculations formed from local superficial deposits. I myself have seen the bricks which formed the foundation of a house I had built carried away, and strewed along the bottom of a river at a depth of 30 or 40 feet below the level of the country.
263 페이지 - will show that, on the whole, the remains of any given animal, if abundant, are not confined to one spot in the cave, but are pretty evenly distributed, and lie large with small, the more with the less dense, not in the least degree sorted by water. There is no evidence of the Bear succeeding to the
64 페이지 - for at least 750 geographical miles, and covering an area fully equal to that of France, that, as it appears to me, a record ought to be preserved of these borings. Southward, at the Rio Colorado, the Pampean formation meets the great Tertiary formation of Patagonia; and northward, at