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When mineral grains in a metamorphic rock do not form layers the rock has what texture?
Wiki User
∙ 13y ago
no texture
Wiki User
∙ 13y ago
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What is a rock's texture?
The texture of a rock consists of it's grain or mineral crystal size, the arrangement of the grains or crystals, and the degree of uniformity of the grains or crystals. Examples of rock texture would be: * Coarse grained--visible crystals or grains as in granite. * Fine grained--small grains, invisible to the unaided eye as in shale. * Porphyritic--large visible crystals in a fine grained matrix as in granite porphyry. * Schistose--layers of flattened micaceous minerals such as in mica schist. * Foliated--a metamorphic rock texture of parallel mineral banding as in gneiss. * Homogenous--same grain apperance in all directions as in basalt.
What is a non-foliated contact metamorphic rock called?
A non-foliated contact metamorphic rock is called a hornfels. Hornfels is called so because of its exceptional toughness and texture both reminiscent of animal horns.
What are foliated metamorphic rocks?
Foliated rocks have layers in them. We often refer to the layers as Banding.
A metamorphic rock that has no layers is called what?
It is called Non-foliated.
What rock has many layers is flat and comes apart easily?
metamorphic
When a mineral grains in a metamorphic rock do not form layers the rock has a?
no texture
When mineral grains flatten and line up in layers a metamorphic rock has a?
A schistose texture.
What do metamorphic rocks with a non-foliated texture show metamorphic changes involve?
mineral grains arranging into layers.
A metamorphic rock that has grains arranged in parallel layers has a what texture?
It has a foliated texture.
When minerals grains flatten and line up in layers a metamorphic rocks has a texture?
A schistose 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
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
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.
A type of metamorphic rock in which mineral grains grow and rearrange but do not form layers?
Foliated is the general descriptive term used to describe the layering or banding of metamorphic rock.
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.
Metamorphic rocks such as marble and quartzite are said to be what because their mineral grains are not arranged in parallel layers or bands?
Nonfoliated
