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Webster 1913 Edition
Laramie group
Lar′a-mie groupˊ
Noun.
(Geol.)
An extensive series of strata, principally developed in the Rocky Mountain region, as in the
Laramie
Mountains, and formerly supposed to be of the Tertiary age, but now generally regarded as Cretaceous, or of intermediate and transitional character. It contains beds of lignite, often valuable for coal, and is hence also called the lignitic group
. See Chart of Geology
.