Inspirassion

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51 examples of  schists  in sentences

51 examples of schists in sentences

"It is impossible to avoid associating such a formation with the fine, smooth, homogeneous clays and schists, poor in fossils, but showing worm- tubes and tracks, and bunches of doubtful branching things, such as Oldhamia, silicious sponges, and thin-shelled peculiar shrimps.

But just as a silicious deposit may be metamorphosed into opal or quartzite, and chalk into marble, so known metamorphic agencies may metamorphose clay into schist, clay-slate, slate, gneiss, or even granite.

And, as Wyville Thomson suggests, in the passage I have quoted above (p. 17), it further enables us to assign a new cause for the occurrence, so puzzling hitherto, of thousands of feet of unfossiliferous fine-grained schists and slates, in the midst of formations deposited in seas which certainly abounded in life.

At our noon halt Mr. Moore and myself ascended a hill of red schist of 300 or 400 feet elevation, in latitude 23 degrees 57 minutes 15 seconds, which had been named Mount Thompson.

A south course of ten miles over a poor stony country brought us to the head of a stream, which, following in the same direction to latitude 24 degrees 51 minutes 52 seconds, we found plenty of feed on its banks and pools of water in its bed, which was here thirty yards wide; the principal features of the adjacent country being low granite ridges, intersected by occasional quartz dykes, alternating with chlorite schist.

The country through which this creek passes is poor and stony, low hills of sandstone schist and limestone rising immediately behind the narrow strip of grassy land, which is fertilised by the overflow of the creek in the rainy season.

At 6.0 a.m. left the camp and steered a course north 60 degrees east, gradually ascending among hills of schist and sandstone till 8.20, when we reached the level tableland.

Steered east from the hill, and traversed an undulating country, the rocks being basalt, sandstone schist, and jasper; the basalt forming the higher ground, though on the banks of the creek the jasper rested on the basalt.

The hills which bound the valley of the creek are basalt, sandstone, and schist.

Several of the horses had strayed some distance from the camp, and we did not start till 12.30 p.m., when we steered north by west till 5.15 p.m. and camped at a small creek in a deep rocky valley; the country after leaving the basaltic plain was very rocky, the hills composed of schist with a superstratum of red sandstone; grass was abundant in the valley, but the hills produced little but triodia and small gum-trees.

Slate, quartz, schist, granite, and trap are the principal rocks, and by their decomposition do not produce a soil favourable to vegetation, the country becoming more desolate as we advanced.

Low hills of schist trap and granite formed a country near the river, and farther back high ranges bounded the valley; they appeared to be flat-topped and with horizontal strata of sandstone on the summits.

The country appears to be chiefly granite and mica schist, with thin beds or streams of lava, which have come from the ranges to the north and advanced to various distances into the more level land.

The prevailing rock granite, traversed by numerous veins of dark trap, and in the latter part of the day porphyry and schist appeared; concretions of limestone were frequent near the trap veins.

At 2.0 p.m. came to broken country covered with a dense scrub of acacia and ironbark, deep gullies intersecting the country in every direction; at 3.30 ascended a ridge of mica schist, from which a high range was seen twenty miles to the south-east, but the scrub was so dense that the view was imperfect.

The country generally consists of low ridges of schist, which, by decomposition, forms a gravelly loam, the gravel being derived from the quartz veins which intersect the schist in all directions.

The country generally consists of low ridges of schist, which, by decomposition, forms a gravelly loam, the gravel being derived from the quartz veins which intersect the schist in all directions.

This part of the country is very poor and scrubby, with large Moreton-Bay ash trees, the soil formed by the decomposition of sandstone and conglomerate, with intervals of schist and trap-rock.

Oh! poor Wallabi Joe, &c. Now as years sped by, and as Bill grew old, It came into his head to go poking for gold; So away he went with a spade in his fist, To hunt for a nugget among the schist.

It is of a greyish-green quartzose chlorite schist, from which the enterprising Father had endeavored, with a perseverance worthy of better success, to procure lime by burning.

Two leagues beyond Piri, at Salapunco, the road skirts the base of precipitous cliffs, the beginnings of a wonderful mass of granite mountains which have made Uilcapampa more difficult of access than the surrounding highlands which are composed of schists, conglomerates, and limestone.

The brown-red earth, the great rocks and the little stones, masses of gravel, shale, schist, cobbles, fine sandall in one intermingled mass was slipping, sliding, rolling, tumbling, falling and fairly leaping down the side of Gold Hill.

The material of this inhospitable coast is a hard metamorphic schist which bids defiance to time and weather.

In mountains, a series of serrated peaks denotes the presence of dolomites; rounded heads mean calcareous rocks; and needles, crystalline schists.

The flint tools, knives, scrapers and the like indicate that they thought they would hunt and slay their quarry when brought down, and fight their foes; and the schist objects found in the graves, which M. de Morgan identifies as amulets, shows that even in those early days man believed that he could protect himself against the powers of supernatural and invisible enemies by talismans.

When the calcareous region of the Gรฉvaudan is reached, the schist, slate, and gneiss disappear.

In addition to partial chambers made with the pick-axe, one sees here and there a series of stairs cut out of the mica-schist.

Then came tall heather and bracken, dwarf oak and chestnut, box and juniper, all luxuriating about the blocks of mica-schist, a rock that holds water and is therefore conducive to a varied and splendid vegetation, wherever a soil can rest upon it.

I could perceive no trace of a metallic vein, so thoroughly had it been worked out, but scattered over the hillside with schist, talcose slate, and fragments of quartz, was a great deal of scoriae, showing that metal of some kind had been excavated, and that the smelting had been done on the spot.

I found the grandeur of solitude, without any suggestion of human life, where huge rocks of gneiss and schist, having broken away from the sides of the gorge, lay along the margins and in the channel of the stream.

The naked schist, ribbed and seamed, served for pavement in the steep little streets of this picturesque old village, where most of the people went barefoot.

The road, having been cut in the side of the cliff, exposed layers of brown argillaceous schist, like rotten wood, and so friable that it crumbled between the fingers; but what was more remarkable was that the layers, scarcely thicker than slate, instead of being on their natural plane, were turned up quite vertically.

The surface of the land was thrown or washed up into dark-brown hillocks of broken argillaceous schist, which repelled vegetation, but the hollows were wooded with mountain oak and many shrubs.

I was leaving the dark schist and was approaching those immense accumulations of jurassic rock, whose singular forms and brilliant colours lend such extraordinary grandeur to the scenery of the Upper Tarn.

A large species of broom, four or five feet high, covered with golden blossom the size of pea-flowers, although the common broom had long passed its blooming, now showed itself as well as roseroot sedum, neither of which had I seen while coming over the schist.

A block of granite cropping out of the sandstone indicated a change in the formation, and this came, for the rocks gradually passed into gneiss and schist, frequently covered with moss and ferns, golden-rod in bloom, and purple heather.

In taking by-paths to reach the causse, I passed over hillocks of chocolate-coloured marl mixed with broken schist and flints: here the broom and juniper, the heather and bracken, flourished.

Great black precipitous rocks of schist, their hollows filled with sombre foliage, rose in solemn grandeur far above me, and in the bottom the plunging stream foamed and roared.

I found the chapela modern Gothic one, with a statue of St. Foy in Roman dress in the niche over the doorunder a high rugged rock of schist.

No; it was a cottage-garden, surrounded by disconnected slabs of mica-schist, standing like little menhirs.

Survey Mining Statistics, No 1), where seventy-seven mines are enumerated, of which three are said to be in "porphyritic schist," all the others in granite, mica schist, clay, slate, etc.]

Survey Mining Statistics, No 1), where seventy-seven mines are enumerated, of which three are said to be in "porphyritic schist," all the others in granite, mica schist, clay, slate, etc.]

There was Anvil Mountain, for instance, a bold schist peak crowned with a huge rock in the likeness of a blacksmith's anvil.

In fact, the number of fragments of coal isolated in schists and sandstone is very large, and without any communication with veins of coal or of bitumen that could have penetrated the vegetable.

The carbonized specimens were never fluid or pasty, since there are some that have left their impressions with the finest details in the schists and sandstones, but none of the latter that has left its traces upon the coal.

Our researches, as we have above stated, have been confined to different cannel coals, anthracite, boghead, and coal plants isolated either in coal pebbles, or in schists and sandstones.

The Stack formed one of the extremities of Ellan Bay, and was a huge mass of isolated schist, accessible at low water, but entirely surrounded at high tide.

He lighted into deep water, nearly up to his neck, and at first tried in vain to secure a footing on the sharp slippery schist; but he stumbled forwards vigorously, and in half a minute, Eric leaning out as far as he could, caught his hand, and just pulled him to the other side in time to escape another rush of tumultuous and angry foam.

But as the black, naked mountains drew near, this gave place to flats white with salt, to jagged upcroppings of dull, yellowish rockhow little they then suspected its true nature!and to detached cliffs sharp as a wolf's teeth, with strata of greenish schist.

All night long, stopping only when one or the other fell, they ploughed over basalt and hornblende schist that lacerated their feet, over blanched immensities under the steel moon, across grim, black ridges and through a basin of clay, circled by hills.

From hand specimens alone it is difficult to assign a name to this rock, as it partakes more or less of the characters of mica, chlorite, and talc-schists. PLANTS.