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Definition of Geological period
1. Noun. A unit of geological time during which a system of rocks formed. "Ganoid fishes swarmed during the earlier geological periods"
Generic synonyms: Geologic Time, Geological Time
Specialized synonyms: Age Of Man, Quaternary, Quaternary Period, Tertiary, Tertiary Period, Cretaceous, Cretaceous Period, Jurassic, Jurassic Period, Triassic, Triassic Period, Permian, Permian Period, Carboniferous, Carboniferous Period, Pennsylvanian, Pennsylvanian Period, Upper Carboniferous, Upper Carboniferous Period, Lower Carboniferous, Lower Carboniferous Period, Missippian Period, Mississippian, Age Of Fishes, Devonian, Devonian Period, Silurian, Silurian Period, Ordovician, Ordovician Period, Cambrian, Cambrian Period
Group relationships: Era, Geological Era
Terms within: Epoch
Specialized synonyms: Glacial Epoch, Glacial Period, Ice Age
Lexicographical Neighbors of Geological Period
Literary usage of Geological period
Below you will find example usage of this term as found in modern and/or classical literature:
1. Elements of Geology; Or, The Ancient Changes of the Earth and Its by Charles Lyell (1865)
"... to Faluns and to Suffolk Crag—The same Species are common to more than one
geological Period—Lower Miocene strati of France—Remarks on classification, ..."
2. Geological Observations on the Volcanic Islands and Parts of South America by George Brettingham Sowerby, William Lonsdale, Edward Forbes, Charles Darwin (1897)
"... and tlieir elevation in mass—Eruptions on parallel lines of fissure within
the same geological period. On the separation of the constituent minerals of ..."
3. Elements of Geology: A Text-book for Colleges and for the General Reader by Joseph Le Conte (1903)
"(a) Geological Fauna and Flora and Corresponding geological period and Geological
... Such a period is called a geological period or geological epoch, ..."
4. A Manual of Elementary Geology; Or, The Ancient Changes of the Earth and Its by Charles Lyell (1865)
"... same Species are common to more than one geological Period—Lower Miocene ...
geological Period ..."
5. Elements of Geology; Or, The Ancient Changes of the Earth and Its by Charles Lyell (1866)
"... to Faluns and to Suffolk Crag—The same species are common to more than one
geological Period—Lower Miocene strata of France—Remarks on classification, ..."
6. The Geological History of Plants by John William Dawson (1888)
"We may select from the flora of any geological period certain forms, which I
shall call specific types, which, may for such period be regarded as unchanging ..."
7. Plant Life of Alabama: An Account of the Distribution, Modes of Association by Charles Theodore Mohr (1901)
"The relation of these woody plants to the flora of a preceding geological period,
of which the present is the progeny, is clearly proved by the remains of ..."
8. North American Geology and Palæontology for the Use of Amateurs, Students by Samuel Almond Miller (1889)
"There is no such geological period, and no gap into which it can possibly be
injected. CHAPTER XXXIX. NOMENCLATURE. THE rules of nomenclature are, ..."
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