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Hasil cari dari kata atau frase: lignitic group (0.02458 detik)
Found 1 items, similar to lignitic group.
English → English (gcide)
Definition: lignitic group
Laramie group
\Lar"a*mie group`\n. (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.
[1913 Webster]
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