Such shoals may be produced when volcanic islands are leveled by waves and ocean currents, and when submarine plateaus, ridges, and peaks are built up by various organic agencies, such as molluscous and foraminiferal shell deposits (Fig.
Chalk is well known to consist largely of foraminiferal shells, mostly vitreous, like the north Atlantic globigerina ooze.
The glauconitic grains of the Greensand formations are chiefly foraminiferal casts.
The majority of foraminiferal shells show two types, the rarer with a much smaller central chamber than that of the more frequent.
They may accumulate in the mud of the bottom to constitute Foraminiferal ooze.
These grains are not properly sand, but little concretions, which form in the bottom of the deep sea, often filling and taking casts of the interior and fine tubes of Foraminiferal shells.
While the foraminiferal limestones were being formed over most of southern Europe, a series of clastic beds were in course of formation in the Carpathians and the northern Alpine region, viz.
In southern and eastern Europe changes of sea-level were less pronounced in character; here the late Cretaceous seas were followed without much modification by those of the Eocene period, so rich in foraminiferal life.
Dawson as to its Rhizopod characters and Foraminiferal affinities, and at the same time furnishes new evidence of no small value in support of that determination.
Thus glauconite and even serpentine may, in a certain sense, be a sort of foraminiferal coprolitic matter or excrement.
It is to these calcareous Foraminiferal species that I shall at present restrict my attention.
King and Rowney have been thus replaced, should assume the forms of a foraminiferal skeleton, is precisely what our authors fail to show, and, as all must see, is the gist of the whole matter.
It is this mystery of design which really constitutes the "profound significance" of the foraminiferal skeleton.
Only if such grains of chondrodite are themselves casts of foraminiferal chambers.
Here we must admit that a deep sea Foraminiferal limestone may give a very imperfect indication of the fauna of its time.
I fear that the circulation of such specimens has done much to cause scepticism as to the Foraminiferal nature of Eozoon.
Euro"Foraminiferal Rock Builders, in the Cretaceous and Eocene.
We may be content to trace foraminiferal life along its own line of development, waxing and waning, but ever confined within the same general boundaries, from the Laurentian to the present time.
Foraminiferal Rock Builders, in the Cretaceous and Eocene 41 Frontispiece.
In the Siluro-Cambrian age two other forms of gigantic Foraminiferal Protozoans were introduced, widely different from Eozoon, and destined apparently not to survive the period in which they appeared.
Further up the valley about a mile above Tembe-ni-ndio, and about 250 feet above the sea, the impure foraminiferal limestones again appear; but they here exhibit an important difference in texture.
Near the last-named place, on the right bank of the Tembe-ni-ndio branch of the Sarawanga river, the foraminiferal limestones are displayed in low cliffs 15 to 20 feet in height.
Here we have fine and coarse calcareous palagonitic tuffs, containing tests of foraminifera, associated with impure foraminiferal limestones.
These foraminiferallimestones are surface formations, and it was in the uppermost portion that the metamorphism was most complete.
Underneath the foraminiferal limestones in this locality occur bedded coarse tufaceous sandstones, slightly inclined E.
Footnote 59: These foraminiferal limestones are described on p.
Such shoals may be produced when volcanic islands are leveled by waves and ocean currents, and when submarine plateaus, ridges, and peaks are built up by various organic agencies, such as molluscous and foraminiferal shell deposits.
Those Recent sediments which temporarily remain in the province range from foraminiferal lutites, found in such areas as the Bahamas, to silty lutites relatively poor in pelagic fossils, found in the higher latitudes.
Several cores from the Muir Seamount revealed a variety of Tertiary foraminiferal lutites.
The continental rise is generally covered by silty foraminiferal lutites, but, where submarine canyon deltas spread out from the mouths of submarine canyons (Ericson et al.
Most of the Bermuda Rise lies below the depth of 2500 fathoms, and thus the sediment ranges from foraminiferal clay through red clay with a predominance of red clay.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "foraminiferal" in a variety of sentences. We hope that you will now be able to make sentences using this word.
