The laminationof Eozoon is not like that of any rock, but a strictly limited and definite form, comparable with that of Stromatopora.
Others, while admitting a similar origin of these rocks, suppose their division into parallel layers to be due, like the lamination of clay-slates, to lateral pressure.
The most frequent of these is a strong lamination varying in direction according to the position of the fragments, but corresponding, as far as can be ascertained, with the diagonal of the rhombohedral cleavage.
It will be observed that this acervuline Eozoon of Steinhag appears to exist in large reefs, and that in its want of lamination it differs from the Canadian examples.
B] Mr. Darwin also imagines the lamination or foliation, as he terms it, of gneiss and mica-schist in South America to be the extreme result of that process of which cleavage is the first effect.
Wealden, sometimes producing, like the plates of mica, a thinlamination (see fig.
Lamination of clay-slate, Montagne de Seguinat, near Gavarnie, in the Pyrenees.
Mr. Darwin attributes thelamination and fissile structure of volcanic rocks of the trachytic series, including some obsidians in Ascension, Mexico, and elsewhere, to their having moved when liquid in the direction of the laminae.
It is exactly the same law, which determines the lamination of crystals, that does that of the strata of the earth, and operates also in producing their lamination.
The lamination is not everywhere a mechanical phenomenon, but without doubt also a polar.
The ingot is next cleaned, and rolled to the proper thinness between cylinders as described under MINT; being in its progress of lamination frequently annealed on a small reverberatory hearth.
The ingots for lamination might probably be plated with advantage by the delicate pressure process employed for silvering copper wire.
A disadvantage of the slotted core is, however, that it usually necessitates the lamination of the pole-pieces.
If the wires are threaded through holes or tunnels pierced close to the periphery of the core, the same advantages are gained as with open slots, and lamination of the pole-pieces is rendered unnecessary.
The alignment of the slots is insured by means of metal wedges, and no filing is done on the slots, so that each lamination is always insulated from the next one.
The core consists of the usual sheet iron lamination slotted and assembled; they are mounted on the inner periphery of the frame, making lap joints (that is "staggered" as in fig.
The concretion may in this way preserve intact the lamination lines or other structures of the rock.
They were in earth that showed the lamination or stratification due to successive water deposits, and had been introduced in the same manner.
The distinct lamination of the saltpeter earth, as shown in the "face," proves it to have been laid down slowly and intermittently in still water.
The lamination of the molar teeth also is very distinct in the two species, as I have before stated--the African being in acute lozenges, the Indian in wavy undulations.
It is produced in the same manner as the lamination of slate rock, which is known, through the distortion of its fossils, to have suffered great pressure at right angles to the planes of cleavage.
Right and left from these longitudinal bands sweep finer curves, twisted here and there into complex windings, which mark the lamination of the subjacent ice.
This texture has sometimes been confused with the lamination of the sedimentary rocks, so that wrong conclusions have been reached regarding origin.
In some parts the lamination was perfect, in other parts the iron and iron-carbide were still dissolved in each other.
Just at this moment the lamination of pearlite, which now occupied its original area, was taking place.
The concretion may in this way preserve intact the lamination lines or other structures of the rock (Fig.
An indurated mud without the lamination or fissility of shale.
An indurated silt without the laminationor fissility of shale.
An indurated clay without the lamination or fissility of shale.
In the sound ice the lamination manifests itself in blue stripes drawn through the general whitish mass of the glacier; these blue veins representing portions of ice from which the air-bubbles have been more completely expelled.
The lamination was as perfect as that of slate, and quite defeated him in his effort to obtain a granular powder.
The 3rd of August was employed in determining the velocity and width of the Glacier de Lechaud, and in observations on the lamination of the glacier.
Previous observers had mistaken the lamination for stratification; but M.
In endeavouring to make out the cause of the lamination of these igneous feldspathic rocks, let us return to the facts so minutely described at Ascension.
From such facts, most authors have attributed the lamination of these volcanic rocks to their movement whilst liquified.
The small nodules also of obsidian are sometimes externally marked with ridges and furrows, parallel to the lamination of the mass, but always less plainly than the sphaerulites.
After having fully described the obsidian, I shall return to the subject of the lamination of rocks of the trachytic series.
The lamination of rocks, which undoubtedly have once been fluid, appears to me a subject well deserving attention.
The laminationof clay and other substances is described in my memoir referred to, Note p.
The stem-pieces were split and laminated in the same manner, but occasionally the lamination was at the bottom, due to the hard curve required where the stem faired into the bottom.
The stem-piece was made from a thin plank cut to profile; thus nolamination was necessary.
Lamination of the stem pieces shows fewer laminae than is common.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "lamination" in a variety of sentences. We hope that you will now be able to make sentences using this word.
