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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 else can I help you with?
What are rocks that have visible layers and elongated mineral grains?
Rocks with visible layers and elongated mineral grains are called foliated rocks. These rocks form under high pressure and temperature conditions, causing minerals to align in layers or elongate in a specific direction. Examples include schist and gneiss.
A type of metamorphic rock in which mineral grains grow and rearrange but do not form layers?
Non-foliated metamorphic rock, such as marble or quartzite, is characterized by the absence of visible layering or banding. The mineral grains in these rocks recrystallize and grow in a uniform manner, without forming distinct layers like in foliated rocks. This type of metamorphism typically occurs under conditions of high pressure and temperature without the presence of directed stress.
How is the size of the mineral grains affect by the rate at which molten rock material rock?
The slower the rate of cooling the larger the size of the crystals that can develop.
What rock has parallel bands of dark and light mineral grains?
Gneiss is a type of rock that has parallel bands of dark and light mineral grains. These bands are a result of the rock being subjected to high temperatures and pressures during its formation, causing the minerals to align in distinct 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.
Can the mineral grains in a metamorphic rock be flattened?
Yes, and they often are, and appear as foliations.
A mineral that can be flattened without breaking?
rutherfordium
What is a banded mineral?
A banded mineral is a mineral that has grains that are arranged in a particular pattern of flat layers or forms swirls.
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.
What is a type of metamorphic rock in which mineral grains grow and rearrange but do not form layers?
schist
When mineral grains flatten and line up in layers a metamorphic rock has a?
A schistose texture.
What type of grains does metamorphic rock have?
Metamorphic rocks can have various types of minerals, such as quartz, feldspar, mica, and amphibole, which form grains within the rock. These grains can be elongated or flattened, depending on the degree of metamorphism the rock has undergone. The size, shape, and alignment of these grains provide valuable information about the rock's history and the conditions under which it formed.
What are rocks that have visible layers and elongated mineral grains?
Rocks with visible layers and elongated mineral grains are called foliated rocks. These rocks form under high pressure and temperature conditions, causing minerals to align in layers or elongate in a specific direction. Examples include schist and gneiss.
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.
How many layers are there in a flattened file?
10
