Rames, a very competent geologist, were interstratified with tuffs and lavas of these older volcanoes, and no doubt as to their geological age was raised by the Congress of French archaeologists to whom they were submitted.
They are not marine, they are interstratified with beds of sand and silt, containing often delicate fluviatile shells, which were deposited when the stream ran tranquilly, as the coarser gravels were when it ran with a stronger torrent.
We meet occasionally with extremely compact beds of volcanic materials, interstratified with fossiliferous rocks.
Layers of light brown, and sometimes black lignite, are interstratifiedwith the clays and sands, and often irregularly diffused through them.
Here and there calcareous slates are interstratified with blue crystalline limestone, and in some divisions conglomerates, passing into red sandstone.
The gypsum and saline matter, occasionally interstratified with such red clays and sandstones of various ages, primary, secondary, and tertiary, have been thought by some geologists to be of volcanic origin.
At St. Pierre there are distinct layers of this kind, from half an inch to several inches in thickness, regularly interstratified with the ordinary limestone.
In both of these localities the rock yielding them belongs to the Grenville band, which is the uppermost of the three great bands of limestone hitherto described as interstratified in the Lower Laurentian series.
Bluish and grayish micaceous slate, interstratified with layers of gneiss, and occasionally holding crystals of magnetite.
In places where they are well displayed these tuffs generally show bedding, as in a hill-slope just east of Vuni-evu-evu, where there are fine and coarse tuffs interstratified and dipping gently W.
Here they are overlaid by a thick bed of agglomerate; and tuff-beds largely made up of vacuolar basic glass debris and showing a few foraminifera are interstratified with them; but they exhibit signs of considerable disturbance (see page 109).
The transition is indicated by the agglomerates becoming interstratified with the tuff-beds.
In the point east of Levuka, a chocolate-coloured somewhat calcareous tuff-clay occurs interstratifiedin thin beds with the coarser deposits.
It is interstratified with a coarser, somewhat altered palagonite-tuff, which shows but little lime and only a suspicion of tests of foraminifera.
The tuff-sandstones interstratified with the clays contain only 2 or 3 per cent.
By this means, we learn how occasional beds of drifted marine shells may become interstratified with freshwater strata at a river's mouth.
Showers of ashes, thrown out by some of the last eruptions of the Eifel volcanoes, fell during the deposition of this fluviatile silt, and were interstratified with it.
Near the surface the pisolites are sometimes loosened by weathering, yielding a gravel ore, and some of the material has been transported a short distance to form detrital ores interstratified with sands and gravels.
The beds of salt so formed are foundinterstratified with shales, sandstones, and limestones, and are frequently associated with gypsum.
Such alum-slates as contain too little bitumen or coal for the roasting process must be interstratified with layers of small coal or brushwood over an extensive surface.
The needles are rolled up in canvas along with some quartzose sand interstratified between their layers, and the mixture is besmeared with rape-seed oil.
The uppermost bed occurs at 75 feet beneath the surface, and is covered with many layers of indurated red, blue, and brown clay, interstratified more or less with sulphate of lime, and interspersed with argillaceous marl.
Pearl consists of carbonate of lime, interstratified with animal membrane.
It is composed of a compact variety of slate; the ground is brownish or leaden green, interstratified with veins of pure black, of variable thickness, from a line to the fourth of an inch.
It is interstratified with thin beds of soft white marl; and in a few places with a marly sandstone.
The country in this vicinity consists of a bluish limestone, interstratified with slate-clay: and naked and rugged ridges of trap rocks rise in various places above the general level.
At the base of Great Bear Mountain, the bituminous shale is interstratified with slate-clay, and I found imbedded in the former a single piece of brown coal, in which the fibrous structure of wood is apparent.
These cliffs consist chiefly of nearly compact light-coloured dolomite, interstratified with greenstone, and a brownish-red limestone, such as occurs in the hills at the mouth of the Dease River.
The saline or gypseous interstratified beds may have been produced by submarine gaseous emanations, or hot mineral springs, which often continue to flow in the same spots for ages.
At Worcester, in the State of Massachusetts, 45 miles due west of Boston, a bed of plumbago and impure anthracite occurs, interstratified with mica-schist.
Layers of light brown and sometimes black lignite are interstratified with the clays and sands, and often irregularly diffused through them.
The same beds are also seen at Builth, in Radnorshire, where they are interstratified with volcanic matter.
In the upper portion of these deposits volcanic tuffs or ashy materials are interstratified with ordinary muddy sediment, and here and there associated with thick beds of feldspathic lava.
At Disco island and other localities on the same part of the coast, good coal is abundant, interstratified with beds of sandstone, in some of which fossil plants have also been found, similar to those at Atanekerdluk.
The Snowdonian hills in Carnarvonshire consist in great part of volcanic tuffs, the oldest of which are interstratified with the Bala and Llandeilo beds.
These rocks are interstratified with each other in such a manner that they may consist of many alterations.
In the Island of Mull certain beds of shale, interstratified with basalt and volcanic ash, are described by the Duke of Argyll as of Miocene date;[90] and Miocene clay is found interstratified with bands of imperfect coal at Bovey Tracey.
The rocks which issued from the centre of the earth in a state of fusion are found associated or interstratified with masses of every epoch, more especially with those of the more ancient strata.
In Lancashire thin beds of Magnesian Limestone are interstratified with red marls in the upper Permian strata, beneath which there are soft Red Sandstones, estimated by Mr. Hull to be about 1,500 feet thick.
When they occur as beds interstratified with aqueous strata, they are said to be contemporaneous, because they have evidently been erupted at the time the series of strata among which they appear was being amassed.
The first of these divisions represents the plutonic, intrusive or subsequent phase of eruptivity; the second marks the volcanic, interstratified or contemporaneous phase.
The interstratified or volcanic series is of special importance in geology, inasmuch as it contains the records of volcanic action during the past history of the globe.
The Tuscan alabaster occurs in nodular masses, embedded in limestone, interstratified with marls of Miocene and Pliocene age.
The fossiliferous limestones of Antalo are generally horizontal, but are in places much disturbed when interstratified with trap rocks.
It might be worth your while to bear in mind the possibility of fine sediment washed over and interstratified with thick beds of frozen snow, and therefore ultimately dropped irrespective of the present contour of the country.
It is the last part of the metal to undergo this transformation and, when thus transformed, it is of constant though not atomic composition, and habitually consists of interstratified plates of its component metals.
It is for the most part composed of sub-angular flints in an ochreous sandy matrix, and is spread out in irregular beds interstratified with seams of sand.
They occur interstratified with the cretaceous rocks, and with every other formation of the fossiliferous series, showing that, from the earliest times, these rocks have been accumulating as they now are.
Beds of salt occur, interstratified with other rocks, in nearly all countries.
The volcanic grits interstratifiedwith the silurian rocks of England show that at the silurian period volcanic fires were active below that portion of the surface.
The beds were distinctly stratified and very sandy, more or less full of rounded stones, and often passing into pure sand, which was interstratified with the coarser beds.
The rock was principally gypsum, interstratified with very friable mica-slate.
In Ayrshire, and in the western parts of Devonshire, beds of felspathic porphyry, felstone and ash are interstratified with strata believed to be of Permian age.
Around the flanks of Muilrea, beds of purple quartz-felstone with tuff are interstratified with the Upper Silurian grits and slates.
Many of the trachytic beds are brecciated and highly columnar; sedimentary beds are also interstratified with those of volcanic origin.
Ellis, that the remains which he met with, were (as he believes) interstratified with an argillaceous tuff; this likewise was the case with the shells observed by the Rev.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "interstratified" in a variety of sentences. We hope that you will now be able to make sentences using this word.
