Lectures on Geology: Being Outlines of the ScienceE. Bliss & E. White, 1825 - 358 páginas |
Dentro del libro
Resultados 1-5 de 96
Página 64
... Sometimes referred to the preceding , sometimes to the succeeding class by writers of Medial Order . these schools - very often the coal measures are referred to the former ; the subjacent lime- stones & sandstones to the latter ...
... Sometimes referred to the preceding , sometimes to the succeeding class by writers of Medial Order . these schools - very often the coal measures are referred to the former ; the subjacent lime- stones & sandstones to the latter ...
Página 66
... sometimes almost vertical , they rise to day at the summit of the loftiest mountains . Granite , Gneiss and Mica Slate are the most prominent of the primary class -though they by no means constitute the class as was formerly supposed ...
... sometimes almost vertical , they rise to day at the summit of the loftiest mountains . Granite , Gneiss and Mica Slate are the most prominent of the primary class -though they by no means constitute the class as was formerly supposed ...
Página 70
... which they bear no relation - thus we find basalt sometimes resting on sandstone , as at the Palli- sades on the Hudson - which are then said to have an unconformable position - thus In the secondary rocks we often find pebbles , or 70.
... which they bear no relation - thus we find basalt sometimes resting on sandstone , as at the Palli- sades on the Hudson - which are then said to have an unconformable position - thus In the secondary rocks we often find pebbles , or 70.
Página 76
... sometimes with pelagic , sometimes with fluviatile shells.- Humboldt has seen crocodiles on the coast of Ter- ra Firma advance far into the sea . ‡ Relative to the distribution of organic remains , a fact has been advanced to prove that ...
... sometimes with pelagic , sometimes with fluviatile shells.- Humboldt has seen crocodiles on the coast of Ter- ra Firma advance far into the sea . ‡ Relative to the distribution of organic remains , a fact has been advanced to prove that ...
Página 80
... sometimes even the real points of resemblance , which present themselves , in formations which are evidently very distinct , in certain species which have had the rare privilege of surviving the destruction of their Essai sur le ...
... sometimes even the real points of resemblance , which present themselves , in formations which are evidently very distinct , in certain species which have had the rare privilege of surviving the destruction of their Essai sur le ...
Otras ediciones - Ver todas
Lectures on Geology: Being Outlines of the Science Jeremiah Van Rensselaer Sin vista previa disponible - 2016 |
Términos y frases comunes
Actynolite alluvial alternating ammonites amygdaloidal arenaceous argillaceous argillite augit basalt beautiful beds belemnites bitumen calcareous chalk chlorite chlorite schist clay slate coal coarse color columnar compact felspar composed compound conglomerates containing crater crystals deluge deposits distinct earth elevated epidote feet felspar Fibrous foliated formation fossils fracture fragments Geologists Geology gneiss grains granite granular green greenstone grey greywacke gypsum hornblende Humboldt indurated ingredients iron laminæ laminar lava lignite limestone marble marine marl mass mentioned mica mica slate micaceous schist mountains observed occasionally occur ocean oolite organic remains ostrea passes peat porphyry position primary rocks primitive prismatic pyrites quantity quartz quartz rock Quartz sand red sandstone sandstone Scaly schist schistose secondary rocks serpentine shale shells sienite siliceous simple sometimes spar species splintery stone strata structure substances surface SYNOPSIS talc tertiary texture theory tion transition trap usually vallies varies varieties vegitable veins volcanic
Pasajes populares
Página xii - And the earth brought forth grass, and herb yielding seed after his kind, and the tree yielding fruit, whose seed was in itself, after his kind: and God saw that it was good.
Página 78 - Nymphs lie With languid limbs in summer's sultry hours. Here too were living flowers Which, like a bud compacted, Their purple cups contracted, And now in open blossom spread, Stretch'd like green anthers many a seeking head.
Página 103 - Villages, and woods, and rocks, Fall flat before their sweep. The region round, Where myrtle walks and groves of golden fruit Rose fair ; where harvest...
Página 78 - And plants of fibres fine, as silkworm's thread; Yea, beautiful as Mermaid's golden hair Upon the waves dispread: Others that, like the broad banana growing, Rais'd their long wrinkled leaves of purple hue, Like streamers wide out-flowing.
Página 47 - When by thus comparing a number of cases, agreeing in some circumstances, but differing in others, and all attended •with the same result, a philosopher connects, as a general law of nature, the event with its physical cause, he is said to proceed according to the method of induction.
Página 78 - With languid limbs in summer's sultry hours. Here, too, were living flowers, Which, like a bud compacted, Their purple cups contracted ; And now in open blossom spread, Stretch'd, like green anthers, many a seeking head.
Página 45 - ... by the water, in consequence either of these lands sinking down below the level of the sea, or of the sea being raised above the level of the lands. The particular portions of the earth also which the sea has abandoned by its last retreat, had been laid dry once before, and had at that time produced quadrupeds, birds, plants, and all kinds of terrestrial productions; it had then been inundated by the sea, which has since retired from it and left it to be occupied by its own proper inhabitants.