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Not every formation affords the necessary ledges upon which the egg can be deposited with safety the face of the cliff may be too smooth, or too jagged, or the shelves may run at too acute an angle. Many of the large assemblages of Guillemots in the British Islands are found where the rock is quartzite, mica-schist, limestone, or chalk.
On one of the plains quartzite cropped out; and silex and fossil wood lay scattered over the rich black soil: the latter broke readily, like asbestos, into the finest filaments, much resembling the fossil wood of Van Diemen's Land. It is difficult to describe the impressions which the range of noble peaks, rising suddenly out of a comparatively level country, made upon us.
From Mount Elisabeth, which, by the way, is of quartzite, I took the following bearings: Mount Courtenay 331 degrees, Mount Lancelot 23 degrees, Point Katharine, 78 degrees. To the West numerous broken tablelands can be seen, and the same to the South.
Gold has now been detected in almost every kind of rock, in slate, quartzite, sandstone, limestone, granite, and serpentine, both in veins and in the rocks themselves at short distances from the veins. In Australia it has been worked successfully not only in alluvium, but in vein-stones in the native rock, generally consisting of Silurian shales and slates. Mr.
In the course of the geological survey carried on under the direction of Sir W.E. Logan, it has been shown that, northward of the river St. Lawrence, there is a vast series of crystalline rocks of gneiss, mica-schist, quartzite, and limestone, more than 30,000 feet in thickness, which have been called Laurentian, and which are already known to occupy an area of about 200,000 square miles.
Denver looked about carefully for some sign of the armed guard and then, not too noisily, he went down the trail and followed along up the gulch. The drill, which was concealed beneath the big, conical tent, was set up in the very notch of the canyon, where it cut through the formation of the rim-rock; and Denver was more than pleased to see that it was fairly on top of the green quartzite.
Lawrence in Canada. BRITISH. Wanting? FOREIGN. Beds of gneiss and quartzite, with interstratified limestones, in one of which, 1000 feet thick, occurs a foraminifer, Eozoon Canadense, the oldest known fossil. Order of Succession of Sedimentary Formations. Frequent Unconformability of Strata. Imperfection of the Record. Defectiveness of the Monuments greater in Proportion to their Antiquity.
Two days afterwards a Kruboy went down and was brought to grass almost insensible from the choke-damp; his hands clenched the rope so tightly that their grip was hard to loose. We then mounted to 'the outcrop' near the ridge-summit, 100 yards north-north-east. This reef-crest is a tongue of quartz and quartzite veining grey granite: it was found dug out and cleared all round by the people. Mr.
The country opens into lightly-timbered ridges, which are composed of a hard rock, the sharp pieces of which covered the ground, and made our animals foot-sore. A coarse-grained sandstone and quartzite cropped out in that part of the river situated between the two camps.
The extraordinary sepulchral chamber of the Hawara pyramid, which, though it is over twenty-two feet long by ten feet wide over all, is hewn out of one solid block of hard yellow quartzite, gives some idea of the remarkable facility of dealing with huge stones and the love of utilizing them which is especially characteristic of the XIIth Dynasty.
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