All ancient doors were hung by pivots at the top and bottom of the hanging stile which worked in sockets in the lintel and cill, the latter being always in some hard stone such as basalt or granite.
It is a comparatively rare rock, for the reason thatbasalt and andesite crystallize more readily than the acidic rocks on passing from the liquid to the solid state.
Tachylite is a highly basic volcanic glass, standing in the same relation to basalt and andesite that obsidian does to trachyte and rhyolite.
It is a common constituent of basalt and allied rocks.
The basalt yields an excellent building-stone, various qualities of which are quarried near Camara de Lobos, five or six miles west of Funchal.
In one of the northern ravines of Madeira by Porto da Cruz some masses of a coarsely crystalline Essexite are exposed to view; this rock is evidently the deep-seated representative of the Trachydoleritic and Nepheline basalt lavas.
While the Picture Gorge Basalt was flooding most of the John Day basin, several volcanoes in the vicinity of Strawberry Mountain erupted andesitic to rhyolitic lava and ash, and built up cones similar to Mt.
A basalt dike 15 feet wide cuts basalt flows in bluffs north of the road and forms a wall 20 feet high in places; it is visible also across the river.
The small slab of basalt south of the fault in Basin Creek has been tilted about 10 deg.
Down-warped flows of Picture Gorge Basalt dip toward Fox Valley from all sides to form a basin (Fig.
Note the contrast between the irregular massive intrusion in the valley bottom west of Monument and the thin regular basalt flows.
Fossil leaves and snails can be found in the beds south of the fault, and 1,000 feet farther south vertical Picture Gorge Basalt flows are exposed.
The road is cut through 300 feet of basalt intruded into the John Day Formation.
The Picture Gorge Basalt flows and ashy beds of the Mascall Formation were tilted southward together and eroded before the Rattlesnake Formation was laid down horizontally across them.
The prominent vertical ribs, visible south of the river in steep slopes below the high bench (pediment), are flows of Picture Gorge Basalt tilted vertically in the north limb of the Aldrich Mountain anticline.
Here one can appreciate the regularity and extent of basalt flows of the flood or plateau type, which form the Columbia Plateau.
The low bluff across the river is formed by a vertical dike of basalt which is about 60 feet wide.
Above the highway several small irregular basalt dikes cut the white beds of the John Day Formation.
The basalt rocks are found both as intrusive masses and as sheets that have been poured out on the surface.
Many of these lava sheets of basalt in slowly cooling and solidifying acquired a columnar structure, the columns often having a more or less hexagonal shape, though the number of sides varies.
Though granite is the most useful of the igneous rocks, basalt is probably the most interesting because of the wonderful formations it discloses.
Before we reached the ridge we could see that the basalt had been literally reduced to powder, and that a little channel, already being filled by the rising tide, had been cut right through the obstacle.
Sometimes we fish along the shore, and then enjoy a luncheon in the grotto, while the basalt columns vibrate like harps to the breeze.
The rock is a great mass of compact black basalt forming some imperfect pillars, the fissures being filled with solid ice.
These hills are all covered with soil; but quarries have been opened in many of them, and the basalt of which they are composed is employed for mending the roads.
The colonists had reached the bottom of the basalt cliff.
They were obliged to ascend the south-western spur, and re-descend on that arid plateau terminated by the strangely-wild basalt cliff.
It was therefore past ten o'clock when the engineer and his companion reached the crest of the enormous mass of rocks of basalt and porphyry which composed the northwest coast of the island.
Here and there stray blocks, numerous debris of basalt and pumice-stone, were met with.
The basalt pillars, fitted one into the other, measured from forty to fifty feet in height, and the water, calm in spite of the tumult outside, washed their base.
At a height of a hundred feet rose the vaulted roof, supported on basalt shafts.
Suddenly, with a totally different inflection, he returns to the thought of his tomb: "Did I saybasalt for my slab, sons?
The coal to all appearance rests immediately on the basalt below, and the ends of perpendicular basaltic columns are seen distinctly to rest on it above.
The basalt is not in the least changed by the contact of the coal, nor the coal by that of the basalt.
I had no opportunity of perceiving with what rocks the basalt of the Giant's Causeway is connected.
The nucleus or axis is of highly inclined stratified metamorphic rocks, through which the granite has been protruded, and the basalt and syenite afterwards injected.
In a deep gulley to the northward, greenstone appears, with black basalt and jasper, the latter apparently altered gneiss: beyond this the rocks strike the opposite way, but are much disturbed.
All the masonry, except the rabbeted work, is constructed from the dark basaltwhich abounds in that district.
Here the black basalt recommences after the region of white limestone where we had been; and then again, at the distance of a good-sized field, we were upon common brown agricultural soil.
High cliffs ofbasalt are the confines of the water.
The ground was in every direction covered with black basalt fragments, among which, however, was corn stubble remaining; and we were told that the crop belonged to the people of Tubas.
It was therefore past ten o'clock when the engineer and his companion reached the crest of the enormous mass of rocks of basalt and porphyry which composed the north-west coast of the island.
The basalt pillars, fitted one into the other, measured from forty to fifty feet in height, and the water, calm in spite of the tumult outside, washing their base.
All the rocks are of basalt and greyish-tinted lavas, excepting some beds of upraised coral.
The stone known as the statue of the war-goddess is a huge block of basalt covered with sculptures.
The stones with which the boiled maize is ground into the paste of which the universal tortillas are made were to be had here; indeed, they are made in the neighbourhood, of the basalt and lava which abound in the district.
The great pyramid where Huitzilopochtli, the God of war, was worshipped, had been razed to the ground, and its great sculptured blocks of basalt were sunk in the earth as a foundation for a cathedral.
Aa, a basalt with a rough, blocky appearance, much like furnace slag, is shown at the top.
They are built up slowly by the accretion of thousands of highly fluid lava flows calledbasalt lava that spread widely over great distances, and then cool as thin, gently dipping sheets.
Some of the malleable metallic nodules extracted from the basalt were found to contain as much as 6.
Hornstein has described large nodules of (nickel-free) iron found in basalt in a quarry at Weimar, near Cassel; Dr.
A careful examination of the rocks of the neighbourhood shows that the basalt contains nickeliferous iron disseminated through it, and that the large masses of iron, [Sidenote: Pane 4m.
Sauer has lately found a single nodule of malleable iron of the size of a walnut in the basalt of Ascherhuebel, in Saxony; Dr.
At Tell el Kady, one of the Jordan sources, a centre of basalt dolmens exists, and at Kefr Wal .
Slemish, lying back from the rest, is best marked, with its flat top, which is indeed evidently the crater of some volcano, forced up in the wild convulsion that has left its other traces in the basalt of Fair Head and the Causeway.
This black basalt with the numberless fissures is a good rock for birds to build in, but a very bad and treacherous dependence for those who climb to pry after their nests.
It is interesting to note that Doctor Koettlitz found in an isolated basalt nunatak (rock or hill protruding from a glacier) fossil plants similar to those found by himself and Nansen on the north side of Cape Flora.
In the centre of the hall rose, massive and splendid, the sarcophagus, cut out of a solid block of black basalt and closed by a cover of the same material, carved in the shape of an arch.
Nothing had been touched in this palace of death since the day when the mummy in its cartonnage and its two coffins had been placed upon its basalt couch.
I give thee a chariot and its horses, a pectoral ornament of beads of lapis-lazuli and cornelian, with a golden circle weighing as much as the green basalt weight.
These men stood ranged in line from the basaltgate to the entrance of the first court, motionless like bronze lamp-bearers.
On the corner of the terrace the Pharaoh, silent, impassible, stood out dark like a basalt statue fixed upon the entablature.
