Examples of 'gneisses' in a sentence
Meaning of "gneisses"
gneiss (noun) - a type of metamorphic rock with a banded texture
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- plural of gneiss
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gneisses
The gneisses are probably basement to the sediments.
One finds there rather frequently syenitic gneisses.
Metasedimentary gneisses are relatively rare.
Gneisses and granites predominate.
It is also found in metamorphic rocks such as gneisses and schists.
These gneisses are polymetamorphic and have a tonalitic and gabbroic composition.
The most widespread types of rock are leucocratic gneisses rich in quartz.
The basis is formed by biotite gneisses metamorphosed in amphibolite facies belonging to chiquitania complex.
The rocks that make up the prong consist of diverse gneisses.
The cvc units are tectonically interleaved with the gneisses of the arroio dos ratos complex.
Garnetiferous quartzites bear a higher fracture strength than garnet sillimanite gneisses.
The massif is composed of a basement of precambrian gneisses and cambrian orthogneisses.
The mountains consist of sedimentary layers lying upon a basement of granites and gneisses.
In the metamorphic environment it occurs in gneisses derived from basic rocks.
The property is underlain by Paleozoic carbonates that overlie Archean granitoids and gneisses.
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Monazite grains in a small segregation in granitic gneisses have variable thoria contents.
Mineralized samples occur in granites, pegmatites and granitic gneisses.
The underlying geology mainly consists of gneisses from the Basement System.
Usually, however, it is possible to distinguish between sedimentary and igneous schists and gneisses.
The city geologically is composed of Archaean gneisses and crystalline schists.
The domed kuppe consists of granite, whereas the surrounding mountainsides are mostly formed of gneisses.
The basement country rocks are Archean crystalline gneisses and granitoids of the Limpopo Belt.
The Neuburg Forest is composed of granite and gneisses.
Heavily eroded, strongly weathered gneisses and granites are common.
The Reisseck Group is predominantly formed of gneisses.
The micaceous, relatively fine grained gneisses are concluded to be metasedimentary rocks.
Brüchert 's analysis of the samples indicated that most are granites, gneisses and sandstones.
These rocks are basically granites, gneisses and schists which are rich in ferromagnesian materials.
This is consistent with textures observed in the gneisses and pegmatite.
Striped gneisses are high-grade mylonites and occur at the very bottom of ductile shear zones.
Consist primarily of gneisses.
Some granitic gneisses were also analyzed for Pb-Pb and Rb-Sr.
The areas between individual belts consist of granites or granitic gneisses that form fault zones.
The gneisses and the pegmatite were sampled by more than 240 m of diamond drill core.
At one time these rocks were regarded as Archean gneisses of a special type.
It comprises pelitic gneisses and subordinate calc-silicate gneisses, marbles, quartz-feldspathic gneisses and rare quartzites.
The relationship between these metasediments and Scourian gneisses remains unclear.
The Siilinjärvi carbonatite is a north-south trending and nearly vertical intrusion within basement gneisses.
The basic version is equilibrium with cordierite, often present in gneisses in association with a garnets.
The continental crust is composed primarily of Archaean, Proterozoic and some Palaeozoic granites and gneisses.
The oldest rocks are the Sen Bay plutonic complex gneisses which have complex Rb-Sr systematics.
Regions in New England have sizable amounts, and in New York syenite gneisses occur.
These are Archean rocks, mainly gneisses and greenstone belts, c.
The impact crater, which was first recognized in 1951 from aerial photographs, formed in Precambrian gneisses.
And you are right, there are ALSO gneisses which are Nappes.
Xenoliths of metapelitic schists with garnet and staurolite porphyroblasts, psamitic gneisses and quartzites occur locally.
The complex was intruded into existing gneisses during the Archean at about 2700 Ma.
At the Glushkovichy area and Mikashevichy area, are large deposits of gneisses and granites.
The crustal rocks comprise amphibolitised eclogites, orthogneisses, marbles, and migmatitic pelitic gneisses.
Its occurrence is in the albite zone of pegmatite in granulites and gneisses Fleischer, 1977.
