It shows also how, in consequence of the folding of the strata and the cutting off of the uplifted parts, old rocks which should be tens of thousands of feet down are found in borings in East Anglia only 1000 feet or so below the surface.
But proofs of an elevation on a still greater scale are to be found in theborings of sea-shells in the limestone cliffs above Kent's Cavern, within the limits of the town, at a height of 200 feet above the present sea level.
Accordingly, two shafts were sunk to a depth of between two and three hundred feet, and from them two diamond drill borings were started, which ultimately crossed at a depth of 1500 feet below the surface of the river.
At each of the points where the variation is great the interval between borings is the full 100 ft.
These borings were made along both curb lines of Seventh Avenue, the east curb line of Ninth Avenue, the north curb line of 33d Street, and the south curb line of 31st Street.
The general plan of enclosing the area in retaining walls having been adopted, wash-borings were taken, for the purpose of determining the best location for the walls, the depth of rock, and the nature of the material overlying it.
Manhattan, borings must be taken at shorter intervals.
These borings indicated that bed-rock was from 12 to 15 m.
To determine this depth, boringswere made by driving 2-in.
From this determination it was concluded that all the water which appeared in the valley below must pass through the sections where the borings were made.
These boringsshowed bed-rock immediately under the river bed, at a depth of from 15 to 45 m.
At the site originally proposed for the dam, a considerable underflow was found, and later investigations, carried out under the present concession, proved that, although borings were carried to a depth of 54 m.
The main conditions were revealed by the borings previously carried across the valley, but the profile has been corrected to show the actual conditions as established at a subsequent date by shafts.
If the turnings and boringsare very coarse they are broken by pounding in an iron mortar, and the dust sifted off before use.
The cylinder was then shifted and similar borings made.
As to the ground, it is evident we are now as Isambard found it by his boringsof August last.
No further steps were taken till the beginning of 1847, when some preliminary borings and sections were made, in order to prepare definite plans for the bridge.
After it had been lowered to the bottom, five borings were taken within it, reaching through the mud to the rock.
Borings were then commenced in order to ascertain the nature of the strata through which the Tunnel would pass.
The other line of borings and pits, twenty-seven in number, was in the parallel of Memphis, where the valley is only five miles broad.
The results of chief importance arising out of this inquiry were obtained from two sets of shafts and borings sunk at intervals in lines crossing the great valley from east to west.
Oahu for several hundred feet has been discovered by artesian borings through coral-rock.
In the year 1850 borings were commenced in the mud deposit of the Nile.
We must get at least two other borings ten or fifteen miles off, if possible on the same parallel, by hook or by crook.
The wetting and drying, the freezing and the thawing, the roots of plants and the borings of animals, all tend to loosen the material on the slopes or walls of the valleys, and gravity helps the loosened material to descend.
It is accomplished chiefly by solution, changes in temperature, the wedge-work of ice and roots, the borings of animals, and such chemical changes as surface water and air effect.
Among these latter signs of life may be mentioned the borings of worms.
These borings are not now always hollow, but their fillings are often so unlike the surrounding rock, that they are still clearly marked.
That quartzite underlies the sandstone of the plain is indicated by the occasional outcrops of the former rock on the plain, and from the fact that borings for deep wells have sometimes reached it where it is not exposed.
Preliminary list of deep borings in the United States, Pt.
At first the borings did not exceed 200 feet in depth, but the upper strata of water being exhausted, the wells were gradually deepened, the water of the lower strata being generally stronger than the upper had ever been.
Mr. Tompkins, an enterprising salt-maker, was the first to extend his borings to a thousand feet, or more.
The wonderful knowledge gleaned from Natty Dingle's store and from the borings in the swamp brought me into trouble and conflict a few weeks later.
The borings we found in plenty wherever the earth was soft,--numerous holes, as if made with a pencil, where the woodcock had probed the earth with her long bill.
To ascertain the extent of this condition the contractor decided to make soundings as far as Tenth Avenue, which was done by sinking trial pits and making wash-borings in the street.
The joints between the segments are made water-tight by a caulking of sal-ammoniac and iron borings driven into grooves formed for the purpose on the inner edges of the flanges.
The owner in this instance claimed that there was a valuable seam of coal underneath, and he had set men to makeborings on the pretence of finding it.
Now, on your oath, be careful--have you not seen men engaged in making borings in this field?
The hollows in which London and Paris lie are both perforated in many places by borings of this nature.
Artesian boringshave been made in West Queensland 4,000 feet deep.
In the river wash-borings were made from a floating pile-driver on which was installed a diamond-drill outfit of rods, pump, etc.
Considerable difficulty was found in holding the pile-driver against the current, the material in the bottom being very soft, and several borings were lost owing to the drifting of the pile-driver.
Following this, borings were continued, and a plan was presented to Mr. Cassatt for assisting the support of the North River tunnels on piles, if necessary.
When the borings in the tunnels reached this material it was found to be water-bearing and the head was about equivalent to that of the river.
The borings on land were mostly core borings, and were generally made with the chilled shot boring machine.
Each of these schemes contemplated an extension through Brooklyn to New York City at Cortlandt Street and Broadway, and surveys and borings for this work were made across the East River.
I have seen him at work with his wizard's wand', and inside five minutes o' the clock he had shown us where to bore for water in a meadow slope that was as deeply pitted before with borings as if it had an attack of smallpox.
But he picked it up again and walked slowly across the ground, not shunning in the least as an ordinary man would have done, if he had his wits about him, the parts that showed the former borings that had come to naught.
The tool used in small borings is a single chisel, as shown in Figs.
This system, in fact, required the presence of a column of water not always to be commanded, especially when the borings had to be executed in the carboniferous strata.
In the new red sandstone, also, to find the water, borings must be made to a considerable depth, but when this formation exists a copious supply may be confidently anticipated, and when found the water is of excellent quality.
Borings of large diameter, for mines or other shafts, are also sunk by means of the same description of boring tools, only considerably increased in size, extending up to as much as 14 feet diameter.
In both the large and the small borings the debris is raised by a shell, similar to Figs.
The following, which are given for this purpose, are the averages of a great number of borings executed under various conditions by the ordinary methods.
On the other hand, there is the opinion of Mr. Hawkshaw, whose borings we have just referred to.
For hours on end he lay flat on his back, staring at the dim illuminations of the windows and listening to the faint out-of-door noises or the sharper borings of insects in the logs of the structure.
He could distinguish even by day, when the night stillness had withdrawn its favouring conditions, the borings of the sawdust insects in the logs of the cabin.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "borings" in a variety of sentences. We hope that you will now be able to make sentences using this word.
