Dumont, and the "pisolitic limestone" of the neighborhood of Paris, both intermediate in age between the Maestricht chalk and the lower Eocene strata, begin to afford us signs of a passage from one state of things to another.
It will be observed in the above section that two of the brown, half-consolidated tuffs are filled with small pisolitic globules.
Brown incoherent tuff, full of pisolitic globules in layers, from half an inch to three inches in thickness 1 6 4.
The pisolitic formation, therefore, may eventually prove to be somewhat more intermediate in date between the secondary and tertiary epochs than the Maestricht rock.
The overlying Tremadoc beds were traced by their pisolitic ore from Tremadoc to Dolgelly.
On the other hand, the Maestricht and Faxoe limestones are very closely connected with the chalk, to which also the Pisolitic limestone of France is referable.
The marine deposits are organically formed limestones, in which foraminifera and large bivalve mollusca play a leading part, marls and sandstones; dolomite and oolitic and pisolitic limestones are also known.
It is slightly represented in the Paris basin at Meudon, and Laversines, in the Department of the Oise, by a white and often rubbly limestone known as pisolitic limestone.
Antrim occur with pisolitic iron ore inter-bedded with the Tertiary basalts, and similar deposits are met with in connexion with the basaltic rocks of the Westerwald in Germany.
It is never found in a crystallized state, but always as earthy, clay-like or concretionary masses, often with a pisolitic structure.
This upper tuff contains numerous pisolitic balls, about the size of small bullets, which differ from the surrounding matter, only in being slightly harder and finer grained.
Numerous white balls appearing like pisolitic concretions, from the size of a walnut to that of an apple, are embedded in this deposit; they usually have a small pebble in their centres.
Of a somewhat later date than the Maestricht beds is the Pisolitic Limestone of France, which rests unconformably on the White Chalk, and contains a large number of Tertiary fossils along with some characteristic Cretaceous types.
The most valuable deposits are residual, and some parts have preserved the texture of the original rock, though with great increase in pore space; most of the ore, however, has the typical pisolitic structure.
The bauxite is earthy, and usually shows a concretionary or pisolitic structure similar to that observed in residual iron ores (p.
It is thought that the solution and redeposition of the iron by organic acids from plant roots may be at least a contributing cause in the formation of this pisolitic texture.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "pisolitic" in a variety of sentences. We hope that you will now be able to make sentences using this word.
