Geological Magazine, Volume 2; Volume 10; Volume 20Henry Woodward Cambridge University Press, 1883 - Geology |
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Common terms and phrases
andesites appear Archæan augite axis Ayrshire Bagshot beds Boulder-clay breccia British Cambrian Carboniferous Chalk character clay colour contain corals crust crystalline crystals denudation deposits described Devonian district drift Eocene eskers evidence fact fauna feet felspars folds formation Foss fossils fragments Gault Geikie genus Geol GEOLOGICAL MAGAZINE Geological Survey geologists glabella glaciers gneiss gravels Griffithides ground ground-mass hill hornblende igneous igneous rocks iron Journ land lateral Limestone Loess Lower M'Coy Mammoth marine mass metamorphic meteorite microscope middle limb miles mineral mountain Museum nickel-iron North occur ocean Oolite origin Palæozoic paper pebbles Phillipsia plagioclase plates porphyritic portion present Prof Professor pygidium pyroxene quartz quartzite ridges river rocks sand Sandstone says schists seen shales shells side Silurian species specimens strata structure surface Tertiary theory thickness Trilobites unconformably Upper valley Wales Westeregeln Woodw
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Page 331 - The body was quite short, and the adominal cavity of moderate size. The legs and feet were massive, and the bones all solid. The feet were plantigrade, and each foot-print must have been about a square yard in extent. The tail was large and nearly all the bones solid. The diminutive head will first attract attention, as it is smaller in proportion to the body than in any vertebrate hitherto known.
Page 272 - The object of the author was to prove that the eastern Gneiss of the Northern Highlands, usually regarded as of " Lower Silurian " age, was to be placed in the Archaean. While admitting that this gneiss frequently overlies the quartzo-dolomitic group of Erriboll and Assynt, he held that this relation was due to dislocation accompanied by powerful thrust from the east, which had squeezed both formations into a series of folds, thrown over towards the west, so as to cause a general easterly dip.
Page 64 - ... during the last century ; the prehistoric delta of the Arve as the most conspicuous instance in the Alps of the partial damming-up of a valley by diluvial detritus ; the quondam Lake of Reutte as an instance connected with violent inversion of strata ; and the ancient lakes of the Grodner and Oetz Thais as instances of the action of moraines. The common fact of observation that lakes are more numerous in glaciated than in non-glaciated countries, the author thought, was partly explained by some...
Page 320 - Ida itself is almost a dome, the lowest rocks (talc schists) occupying the summit. On the northern slopes there is true gneiss. No igneous rocks enter into the structure of this mountain. At different horizons there are bands of coarsely crystalline limestone, and as far as can be seen this series is conformable throughout. (2) Resting on these old rocks and in part made up of their remains is a series of partially crystalline rocks, chiefly limestone. It is probable that this series is in large...
Page 470 - ... is the rule and law which seems to govern all things around us ; aye, and very often all things that we depend upon within us too. For every physician knows the terrible continuities of disease — how the thinning of the walls of vessels, and the weakening or degeneration of other organic tissues, go on, often unseen and unsuspected, until their appropriate result emerges in some catastrophe which destroys in a moment of time the reason or the life. And if it is irrational to quote the continuity...