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What do metamorphic rocks with a non-foliated texture show metamorphic changes involve?
Metamorphic rocks with a non-foliated texture show that the metamorphic changes involved did not result in the development of a preferred alignment of mineral grains. This indicates that the rocks were subjected to directed pressure or high temperatures without causing the minerals to align into layers. Examples of non-foliated rocks include marble and quartzite.
Does metamorphic rock have layers?
Not exactly. Some metamorphic rocks have foliation, which can appear similar to the layers of sedimentary rock. Foliation develops from mineral grains being oriented by pressure, rather than the deposition of layers.
What is the parallel crystal arrangement of layers in metamorphic rock called?
The parallel crystal arrangement of layers in metamorphic rock is called foliation. Foliation is a common feature in rocks that have undergone intense heat and pressure, resulting in the alignment of mineral grains into distinct layers.
What is metamorphic rocks with a non-foliated texture show metamorphic change that involves?
Lesson 5: Metamorphic RocksScience 7 A Unit 2: Earth's Materials1. All of the following conditions in Earth can cause metamorphic rocks to form except _____. (1 point)(1 pt) exposure to air(0 pts) the presence of hot, watery fluids(0 pts) heat(0 pts) pressure1 /1 point2.Metamorphic rocks that show layers of dark minerals alternating with layers of light minerals are classified as _____. (1 point)(0 pts) nonfoliated(0 pts) detrital(1 pt) foliated(0 pts) intrusive1 /1 point3.Metamorphic rocks with a nonfoliated texture show metamorphic change that involves _____. (1 point)(0 pts) mineral grains arranging into layers(1 pt) growth in the size of the mineral grains(0 pts) mineral grains flattening under pressure(0 pts) mineral grains melting1 /1 point
When mineral grains are flattened into layers?
This may be due to the overburden load, which is essentially the weight of all the material above the layer of minerals in question squashing them flat. Or it may be due to deformation caused by the movements of tectonic plates which often causes a form of deformation known as shearing where two things slide past each other. When this occurs in ductile rock masses, it acts to flatten and rotate mineral grains so that their long axis is parallel to the shear plane.
What is a type of metamorphic rock in which mineral grains grow and rearrange but do not form layers?
schist
When a mineral grains in a metamorphic rock do not form layers the rock has a?
no texture
When mineral grains in a metamorphic rock do not form layers the rock has what texture?
no texture
What type of metamorphic rock is composed of mineral grains arranged in parallel layers?
Foliated.
When mineral grains flatten and line up in layers a metamorphic rock has a?
A schistose texture.
What is a type of metamorphic rock in which mineral grains recrystallize but do not form layers?
Those would be non-foliated metamorphic rocks, like quartzite and marble.
If you found a rock with flat mineral grains which rock would it be?
It is likely a type of metamorphic rock, such as schist or gneiss, which form under high temperature and pressure conditions leading to the alignment of mineral grains into flat layers.
What do metamorphic rocks with a non-foliated texture show metamorphic changes involve?
Metamorphic rocks with a non-foliated texture show that the metamorphic changes involved did not result in the development of a preferred alignment of mineral grains. This indicates that the rocks were subjected to directed pressure or high temperatures without causing the minerals to align into layers. Examples of non-foliated rocks include marble and quartzite.
Is it true that foliated metamorphic rocks have mineral grains that are randomly placed?
No, foliated metamorphic rocks have mineral grains that are aligned in parallel layers or bands due to the pressure and temperature conditions during their formation. This alignment gives foliated rocks their characteristic layered appearance.
Does metamorphic rock have layers?
Not exactly. Some metamorphic rocks have foliation, which can appear similar to the layers of sedimentary rock. Foliation develops from mineral grains being oriented by pressure, rather than the deposition of layers.
What is the parallel crystal arrangement of layers in metamorphic rock called?
The parallel crystal arrangement of layers in metamorphic rock is called foliation. Foliation is a common feature in rocks that have undergone intense heat and pressure, resulting in the alignment of mineral grains into distinct layers.
What are the characteristics of foliated and non-foliated metamorphic rocks?
Foliated metamorphic rocks have a layered or banded appearance due to alignment of mineral grains, exhibit strong cleavage, and are formed under directed pressure. Non-foliated metamorphic rocks do not have a layered structure, show more equidimensional mineral grains, lack cleavage, and are typically formed under contact metamorphism.
