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What rock has a foliated dense rock that has light and dark colored banding?
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∙ 10y ago
Gneiss
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∙ 10y ago
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In general how does the density of a light colored igneous rock differ from that of a dark colored igneous rock?
Light-coloured igneous rocks, such as granite, have a higher silica content and lower iron and magnesium than darker ones, such as basalt. Since iron and magnesium are very dense minerals, this makes darker igneous rocks more dense than lighter ones.
What is the difference between foliated and nonfoliated metamorphic rocks?
Foliation is a geologic term that is used to describe the banded or layered appearance of metamorphic rocks.Foliated metamorphic rocks such as gneiss display banding and regrouping of its mineral constituents as a result of enormous pressures and heat. The banding forms perpendicularly to the direction of pressure. The pressure is usually related to tectonic plate collisions. Schist is another type of foliated rock that exhibits thin layering of micaceous minerals, once again due to pressure and heat. The difference between these two foliated rocks lies in the rock from which they were derived (protolith) and their degree of metamorphism.Non-foliated metamorphic rocks such as quartzite and marble do not display the banding or layering that are present in foliated rocks. This may be partially due to the high relative percentage of one individual mineral in the parent rock, as well as to the metamorphic variables of heat and pressure.'Foliated' is a term used to describe metamorphic rocks whose grains are arranged in parallel layers.
Is schist foliated or non- foliated?
Chert is non-foliated. Foliation is a term that is used mainly to describe the appearance or texture of metamorphic rock. Chert is a sedimentary rock, composed mostly of microcrystalline quartz.
Is gneiss smooth and shiny?
Gneiss is a foliated metamorphic rock, displaying bands of light and dark minerals.
What rock forms from light-colored lava?
The rock that is formed from light-colored lave is called rhyolite.
A foliated dense rock that has light and dark colored banding?
gneiss
What is a foliated dense rock that has light and dark colored banding?
Gneiss
Light-colored igneous rocks are less what than dark-colored igneous rocks are?
less dense
How does the density of a light colored rock differ from the density of dark colored rock?
Normally, light colored igneous rocks are less dense compared to dark colored igneous rocks. This is because the light colored rocks have a less iron in them.
How does the density of a light colored igneous rock differ from that of a dark colored igneous rock?
Normally, light colored igneous rocks are less dense compared to dark colored igneous rocks. This is because the light colored rocks have a less iron in them.
What type of rock has light and dark layers?
foliated.
What term is used to describe metamorphic rocks with a banded texture?
The two main groups of metamorphic rocks are foliated and non-foliated. Foliated metamorphic rocks show layering and parallel alignment of flat mineral crystals (ex. micas). The "banded texture in metamorphic rocks" is one of the specific kinds of foliated textures. It is referred to as gneissic banding. Essentially, this texture displays alternating layers of light and dark minerals. These rocks are called gneiss- the light bands form from quartz and feldspars, while the dark ones form from ferromagnesian minerals.
In general how does the density of a light colored igneous rock differ from that of a dark colored igneous rock?
Light-coloured igneous rocks, such as granite, have a higher silica content and lower iron and magnesium than darker ones, such as basalt. Since iron and magnesium are very dense minerals, this makes darker igneous rocks more dense than lighter ones.
What is a nonfoliated texture?
A non-foliated rock is a metamorphic rock that does not display a lamellar texture or distinct light and dark banding common to foliated metamorphic rocks. Non-foliated rock includes quartzite, marble, and metabasalt. Non-foliated metamorphic rocks are most often derived from single mineral sedimentary rocks like limestone and quartz sandstone. == == == ==
Is pumice foliated?
Pumice is a light and porous volcanic rock formed when glassy lava solidifies rapidly. Some pumice clasts are known to be foliated.
If a rock has bands of light and dark layers it is?
It could be foliated metamorphic rock or sedimentary rock, depending on its mineral makeup and method of formation.
Can tigers camouflage in the jungle?
Tigers fur is specifically colored to suit the light shining in through the trees, so yes, in dense forest they are most camouflaged.
