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A slowly cooled magma will most likely result in a rock with which one What textures?
A slowly cooled magma is likely to result in a rock with a coarse-grained texture because the crystals have more time to grow larger. Examples of rocks with coarse-grained textures from slowly cooled magma include granite and diorite.
Formed from slow cooling magma speckled with large minerals grains?
This describes an igneous rock with a coarse-grained texture, likely formed deep within the Earth's crust where cooling is slower, allowing time for large mineral grains to form. This type of rock is typically intrusive, such as granite or diorite, and is characterized by its visibly distinct mineral grains.
Is granite exstrusive?
Due to its high acidic and viscous nature, granite will most likely be intrusive, causing dykes that cut through bedding planes.
Why is the ocean floor more likely to have extrusive rocks than intrusive rocks?
The ocean floor is more likely to have extrusive rocks because these rocks form from lava that erupts directly onto the surface of the ocean floor, cooling quickly in contact with seawater. This process occurs primarily at mid-ocean ridges, where tectonic plates diverge and magma rises to create new oceanic crust. In contrast, intrusive rocks form from magma that cools slowly beneath the Earth's surface, which is less common in oceanic environments due to the prevalent tectonic activity that promotes rapid cooling and solidification at the surface.
What did igneous rock begin as?
Igneous rock typically begins as magma, which is molten rock located beneath Earth's surface. This magma can solidify underground to form intrusive igneous rock or erupt onto the surface as lava and cool to form extrusive igneous rock.
How would a geologist identify an igneos rock as extrusive or intrusive?
You can look at the rock texture.If the crystals are Large enough to be visible with your naked eye without stressing it the the texture is likely to be either medium coarse grained or course grained which is an indication that it is Intrusive.The opposite is forExtrusive
What can you tell about an igneous rock that is coarsed grained?
It is most likely intrusive
What can you tell about an igneous rock that has coarse-texture?
It is most likely extrusive.
What is the difference between fine and coarse grained igneous rock?
Coarse grained textured rocks (phaneritic) have very large crystals because the magma, from which they are created, cools very slowly. Fine grained rocks (aphaneritic) have small crystals because the lava, from which they are created, cools down very quickly.
Domelike mass of intrusive igneous rock?
That description likely refers to a pluton, which is a large, circular or dome-shaped mass of intrusive igneous rock formed beneath the Earth's surface by the solidification of magma. Plutons are typically composed of granite or other coarse-grained rocks.
A coarse-grained rock and a fine-grained rock probably had different .?
Cooling rates. A coarse-grained rock likely cooled slowly, allowing larger crystals to form, while a fine-grained rock probably cooled quickly, resulting in smaller crystals.
A coarse grained igneous rock with no pyroxene?
Granite is a coarse grained igneous rock without Pyroxene.
Which would weather faster a fine grained or a coarse grained igneous rock?
A fine-grained igneous rock would likely weather faster than a coarse-grained igneous rock. This is because the smaller grains in a fine-grained rock provide more surface area for weathering processes to act upon, leading to quicker breakdown and erosion.
A coarse-grained rock and a fine-grained rock probably had different what?
Methods of formation. If crystalline (igneous or metamorphic) they would most likely have had differing rates of cooling. If sedimentary, they would most likely have had differing depositional environments (higher energy for larger grain sizes).
This igneous rock is coarse-grained. The dark-colored mineral composing this rock is probably?
The dark-colored mineral in coarse-grained igneous rocks is likely to be biotite or hornblende. These minerals are commonly found in rocks like diorite, gabbro, and basalt.
What is the main difference between gabbro and basalt?
is plutonic (meaning it is formed slowly deep within the earth) while basaltis volcanic (meaning it has been transported to or near the surface)same composition, gabbro would be more likely to exhibit crystalline growth while basalt would be more fine grained to aphanitic
Which is a coarse-grained igneous rock composed of mainly pyroxene plagioclase feldspar and olivine?
Gabbro.
