poecilitic definition

  • adjective:
    • Mottled with various colours; variegated; spotted.
    • Of or regarding, or characterizing, Triassic and Permian sandstones of red alongside tints.
    • Mottled with different colors; variegated; spotted; -- said of certain stones.
    • exclusively: Of or related to, or characterizing, Triassic and Permian sandstones of purple along with other colors.
  • noun:
    • A name suggested by Conybeare as an equivalent for brand new Red Sandstone, in allusion to its variegated shade, the rocks which this team consists consisting mainly of red, yellowish, and variegated sandstones, conglomerates, and marls, with occasional beds of limestone. See sandstone, Permian, and New Red Sandstone (underneath sandstone).
    • In petrography, a term used by G. H. Williams in 1886 (in type poikilitic) to designate the texture of those igneous rocks where comparatively big crystals behave as a matrix for a lot of smaller people, that are included in the bigger people, and, whenever these are cleavable, produce luster-mottling.

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