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Related to gneissic: gneissose


A banded or foliated metamorphic rock, usually of the same composition as granite.

[German Gneis, probably alteration of Middle High German ganeist, spark (from its appearance), from Old High German gneista.]

gneiss′ic (nī′sĭk), gneiss′oid′ (nī′soid′), gneiss′ose′ (nī′sōs′) adj.
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References in periodicals archive ?
Most of the mineralisation is associated with steep westerly-dipping, north-trending pegmatitic quartz-feldspar veins identified within variably deformed gneissic rocks and schist.
Granitic and Gneissic Outcrops (Inselbergs) as Centers of Diversity for Desiccation-Tolerant Vascular Plants.
Fluoride-rich waters are associated with sediments of marine origin in mountainous areas and volcanic, granitic, and gneissic rocks [8].
It is either massive or has a gneissic banding formed by alternating leucocratic and amphibole-bearing melanocratic layers.
Miles and de Kimpe (1988) identified low-charge corrensite in the Ap, Ah and Bw horizons of Cambisols developed on till derived from granitic rocks and till derived from marble with high amount of granitic and gneissic rocks.
For the 3D FEM modelling, more generalized rock mass properties are used, as the rock material is migmatitic gneiss containing both gneissic and granitic sections.
16 [km.sup.2]) consists mostly of a rolling elevated plateau (140-230 m a.s.l.) above steep gneissic cliffs.
According to Ab'Saber (1974) a strong erosional process took place in the region during the Tertiary period, exposing the pre-cambrian granitic and gneissic basement of the region and resulting in a degraded (geologically speaking) landscape composed mostly of areas of low altitude.
The older rocks in this massif include the gneissic basement of the Cocha--Rio Tellez Complex and associated meta-sedimentary rocks considered Precambrian and Paleozoic in age (Murcia and Cepeda, 1983; Ponce, 1979).