In traditional English and North American usage, a gneiss is a coarse-grained metamorphic rock showing compositional banding (gneissic banding) but poorly developed schistosity and …

What Is Gneiss? Gneiss is a foliated metamorphic rock identified by its bands and lenses of varying mineral composition. Some of these bands (or lenses) contain granular minerals that …

Gneiss is a foliated metamorphic rock that is characterized by its banded appearance. The bands are composed of different minerals, which are aligned in parallel layers. Gneiss is formed by …

Gneiss, metamorphic rock that has a distinct banding, which is apparent in hand specimen or on a microscopic scale. Gneiss usually is distinguished from schist by its foliation and schistosity; …

Aug 15, 2012 · Gneiss is a coarse-grained metamorphic rock in which most mineral grains are visible without magnification. Its hallmark is gneissic banding – alternating light and dark layers …

Jan 8, 2026 · Gneiss (pronounced “nice”) is a widely distributed, high-grade metamorphic rock formed deep within the Earth’s crust under extreme heat and pressure. Its most recognizable …

It can be difficult to know exactly what gneiss looks like and how to identify it, but it is relatively simple if you know what to look for. Gneiss is a coarse-grained foliated metamorphic rock that …

Apr 15, 2018 · Gneiss is a foliated metamorphic rock that is a common distribute type of rock high-grade regional metamorphic approaches from pre-current formations that have been …

A gneiss is defined as a banded metamorphic rock generated from either a sedimentary or an igneous rock, and is composed of feldspar, quartz, mica, or hornblende, and is coarse enough …

Gneiss is a high-grade metamorphic rock with a distinctive banded or layered appearance. It forms from the intense metamorphism of various rock types under high temperature and …