Example Sentences

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It is called the stratigraphical method, because it is based on the description of strata, or layers.

From Anthropology by Marett, R. R. (Robert Ranulph)

They belong entirely to the Ordovician and Silurian periods; they have yielded few fossils, and much work remains to be done upon them before the stratigraphical subdivisions can be clearly defined.

From Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 3 "Capefigue" to "Carneades" by Various

In order, however, that the sequence of the formations and their parallelism in Europe and North America may be presented together a stratigraphical table is given on next page.

From Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 6 "Geodesy" to "Geometry" by Various

There is no definite break, either stratigraphical or palaeontological, at the top of the Pliocene, and it is most natural to regard the Tertiary epoch as still in progress.

From The Antiquity of Man by Lyell, Charles, Sir

Chronological succession of the fossiliferous rocks—Tests or age of strata—Value of Palæontological evidence in stratigraphical Geology—General sequence of the great formations.

From The Ancient Life History of the Earth A Comprehensive Outline of the Principles and Leading Facts of Palæontological Science by Nicholson, Henry Alleyne