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When a metamorphic rock exhibits a layered or banded appearance it is said to exhibit what type of texture?
Wiki User
∙ 11y ago
foliated texture
Wiki User
∙ 11y ago
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What does foaliated and non foaliated mean?
Non-foliated metamorphic rocks such as marble and quartzite which do not have a layered or banded appearance.
How many metamorphic rock are there?
Metamorphic rocks have been modified by heat, pressure and chemical process usually while buried deep below Earth's surface. Exposure to these extreme conditions has altered the mineralogy, texture and chemical composition of the rocks. There are two basic types of metamorphic rocks: 1) foliated metamorphic rocks such as gneiss, phyllite, schist and slate which have a layered or banded appearance that is produced by exposure to heat and directed pressure; and, 2) non-foliated metamorphic rocks such as marble and quartzite which do not have a layered or banded appearance. Pictures and brief descriptions of some common types of metamorphic rocks are provided below.
What is the primary mineral of Gniess?
Gneiss is a metamorphic rock which exhibits foliation (a layered effect). The layers of gneiss are alternating light and dark layers. Usually the lighter layers are rich in quartz and feldspar and the darker layers are rich in biotite mica, hornblende, or tourmaline.
Why does doposition have a layered look?
The deposition of the sediments is usually cyclical, such as tidal, or from rainfall transportation, creating the layered appearance.
What is the study of rock layers?
Sedimentary rocks, extrusive igneous rocks, layered igneous intrusions, foliated metamorphic rocks.
How do you describe a metamorphic rock?
a foliated rock is a metamorphic rock with a texture that gives the rock a layered appearance.
What Metamorphic rock layers?
Layered metamorphic rock is one that has a foliated or banded appearance due to exposure to heat and directed pressure. Examples: phyllite and slate.
What does foaliated and non foaliated mean?
Non-foliated metamorphic rocks such as marble and quartzite which do not have a layered or banded appearance.
Is granite foliate?
No. Foliation is a texture most often used to describe the banded, platy, or layered appearance of certain metamorphic rocks.
Metamorphic rocks that show layers of dark minerals alternating with layers of light minerals are classified as?
foliated metamorphic rocks. The alternating layers are caused by the alignment and segregation of minerals during the metamorphic process, resulting in a banded or layered appearance. Examples of foliated metamorphic rocks include gneiss, schist, and slate.
How many metamorphic rock are there?
Metamorphic rocks have been modified by heat, pressure and chemical process usually while buried deep below Earth's surface. Exposure to these extreme conditions has altered the mineralogy, texture and chemical composition of the rocks. There are two basic types of metamorphic rocks: 1) foliated metamorphic rocks such as gneiss, phyllite, schist and slate which have a layered or banded appearance that is produced by exposure to heat and directed pressure; and, 2) non-foliated metamorphic rocks such as marble and quartzite which do not have a layered or banded appearance. Pictures and brief descriptions of some common types of metamorphic rocks are provided below.
What is a non foliated rock?
A rock that exhibits a non layered structure
What is schistosity in rock?
Schistosity refers to a particular rock texture found in certain metamorphic rocks, that is a reaction to increases in directionally applied stress and temperature. Schistosity is present where the texture of the rock exhibits a platy, layered appearance, with visible crystals of micas and other minerals, oriented in the same direction. The mineral crystals have become aligned perpendicularly to the direction of the applied stress.
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.
What is the primary mineral of Gniess?
Gneiss is a metamorphic rock which exhibits foliation (a layered effect). The layers of gneiss are alternating light and dark layers. Usually the lighter layers are rich in quartz and feldspar and the darker layers are rich in biotite mica, hornblende, or tourmaline.
When metamorphic rock has banded texture with minerals grains that are arranged in layers it is called?
Metamorphic rocks with a layered or banded look are referred to as foliated.
What type of rocks are banded or non banded?
Slate is a type of metamorphic rock. It is a foliated metamorphic rock that has a banded, or layered, appearance due to exposure to directed pressure and heat.
