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The metamorphic rock texture that has alternating bands of light and dark minerals is?
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∙ 12y ago
gneiss
Wiki User
∙ 12y ago
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What is composed of alternating bands of light and dark silicate minerals?
Gneiss shows such banding. Alternating bands are known to Geologists as Gneissose Banding, and is used to instantly classify the metamorphic rock.
What are rocks called with alternating bands of light and dark silicate minerals?
They are probably gneiss, a banded metamorphic rock.
If a rock has bands of light and dark layers it is what?
It could be a sedimentary rock or a foliated metamorphic rock exhibiting alternating bands of light and dark minerals.
What type of rock texture results when extreme pressure causes minerals in metamorphic rock to realign or when minerals separate out into dark and light bands?
I do believe that the answer is "foliated". However I am not positive, but I do know that... Banding is another word for foliation, which is the grouping of certain minerals with the rock forming parallel bands that are perpendicular to the pressure that causes its formation. Banding of different minerals give some metamorphic rocks a striped appearance, involving the segregation of light and dark minerals into layers. Good luck with your question and I hope that this information has helped.
Why do bands of minerals develop in most metamorphic rocks?
It's because of foliation. Foliation is defined as the arrangement of a set of minerals in parallel, sheet-like layers that lie perpendicular to the flattened plane of a rock.
What is composed of alternating bands of light and dark silicate minerals?
Gneiss shows such banding. Alternating bands are known to Geologists as Gneissose Banding, and is used to instantly classify the metamorphic rock.
Is composed of alternating bands of light and dark silicated minerals?
Gneiss shows such banding. Alternating bands are known to Geologists as Gneissose Banding, and is used to instantly classify the metamorphic rock.
What are rocks called with alternating bands of light and dark silicate minerals?
They are probably gneiss, a banded metamorphic rock.
If a rock has bands of light and dark layers it is what?
It could be a sedimentary rock or a foliated metamorphic rock exhibiting alternating bands of light and dark minerals.
If a rock has bands of light and dark layers its what?
It could be a sedimentary rock or a foliated metamorphic rock exhibiting alternating bands of light and dark minerals.
What is composed of alterning bands of light and dark silicate minerals?
Gneiss shows such banding. Alternating bands are known to Geologists as Gneissose Banding, and is used to instantly classify the metamorphic rock.
Is it true or false that the texture of a sedimentary rock that does not have minerals arranged in bands is described as nonfoliated?
False. The terms folidated and nonfoliated apply to metamorphic rocks.
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.
What is the texture called in metamorphic rocks with bands or layers?
foliated
What is metamorphic rocks that have parellel bands of minerals?
It is foliated
What is a metamorphic rock showing minerals formed into bands?
Gneiss.
Do all foliated metamorphic rocks have bands of minerals?
i believe they do yes.
