Chazyan


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Chazyan

[′chaz·ē·ən]
(geology)
Middle Ordovician geologic time.
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References in periodicals archive ?
These are similar to forms found in the Crown Point Formation and other Chazyan units.
1959, Ordovician Chazyan series of Champlain Valley; New York and Vermont, and its reefs: Bulletin of the American Association of Petroleum Geologists, v.
1961, Occurrence of Foerstephyllum in Chazyan rocks of Vermont: Journal of Paleontology, v.