#primaryrock — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #primaryrock, aggregated by home.social.
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Primary rock (Geology terminology ⛰️)
Primary rock is an early term in geology that refers to crystalline rock formed first in geologic time, containing no organic remains, such as granite, gneiss and schist as well as igneous and magmatic formations from all ages. Webster's Revised Unabridged Dictionary published in 1913 provides the following term as used in geology: Primary rocks a term early used for rocks supp...