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What else can I help you with?
Do extrusive igneous rocks have small grains since intrusive has large?
That is correct.
Type of crystal grain that form when molten rock cools quickly?
Small crystal grains form when molten rock cools quickly. In an extrusive igneous rock, it's referred to as aphanitic texture.
What type of rock is formed when an igneous rock is cooled very rapidly?
When magma is cooled, it forms an igneous rock. When magma is cooled rapidly, that igneous rock is of the category called "extrusive" or "volcanic". When the magma is cooled very rapidly, the extrusive igneous rock formed will probably be holohyaline (glassy) in texture, or foamy like pumice.However if you take an igneous rock that is already rock and cool that very rapidly it will probably shatter owing to thermal stress. That might result in the formation of tuff.
Which features are extrusive igneous rocks least likely to have?
A)fossils B)small grains C)vesicular texture D) porphyrtic texture Its one of these answers i chose D. because its more likely to have it. Idk if its the right answer.
What are the three types of grains of rocks?
The three types of grains in rocks are igneous, sedimentary, and metamorphic grains. Igneous grains form from the cooling and solidification of molten material, sedimentary grains originate from the accumulation of mineral and organic particles, and metamorphic grains result from the alteration of existing rocks under heat and pressure. Each type reflects different geological processes and environments of formation.
Do extrusive igneous rocks have small grains since intrusive has large?
That is correct.
How does the rate of cooling influence crystal size of igneous rocks and how does that help you to distinguish between intrusive and extrusive igneous rocks?
The longer that magma is able to cool, the larger the crystals will be. Intrusive rocks will have larger crystals than extrusive rocks. For example granite (intrusive) has larger grains than rhyolite (extrusive).
How do you petrologists use grain size to tell the difference between intrusive and extrusive igneous rocks?
Petrologists use grain size as an indicator of cooling rates to differentiate between intrusive and extrusive igneous rocks. Intrusive rocks, which form from magma cooling slowly beneath the Earth's surface, typically exhibit larger, well-defined crystals due to the extended time for crystal growth. In contrast, extrusive rocks cool rapidly on the surface, resulting in smaller grains or a glassy texture. Thus, the size and texture of the mineral grains provide key insights into the rock's formation environment.
Is sandstone extrusive?
sedimentary rock are extrusive when the were formed outside land than in the dirt extrusive rocks take less time to form than intusive (formed under ground) becase wind and help it form faster. i hope this is very helpful =)
When igneous rocks from a volcanic eruption cools what does it form?
When igneous rocks from a volcanic eruption cool, they can form either intrusive or extrusive rocks. Intrusive igneous rocks form when magma cools slowly beneath the Earth's surface, resulting in larger mineral grains. Examples include granite and diorite. Extrusive igneous rocks form when lava cools quickly on the Earth's surface, resulting in smaller mineral grains. Examples include basalt and pumice.
What best describes igneous rocks?
The description oof it is big grains and there are visual and you can touch them always remember that it is intrusive igneous rock not extrusive rock igneous rock. and the color of it is GRAY!!!! Thankz for asking the questions ask more
What is the major difference between intrusive rocks and extrusive igneous rocks?
The major difference is their formation location: intrusive rocks are formed below the Earth's surface from the slow cooling of magma, resulting in coarse-grained textures, while extrusive rocks are formed on the Earth's surface from rapid cooling of lava, resulting in fine-grained textures. Intrusive rocks have larger mineral grains due to their slower cooling process, whereas extrusive rocks have smaller mineral grains due to their faster cooling process.
Do extrusive rocks have larger grains than intrusive rocks?
No, extrusive rocks typically have smaller grains than intrusive rocks. Extrusive rocks form from lava that cools quickly on the Earth's surface, resulting in fine-grained or glassy textures. In contrast, intrusive rocks form from magma that cools slowly beneath the surface, allowing larger crystals to develop. Thus, intrusive rocks generally have larger grains compared to extrusive rocks.
What Evidence Would You Look For If Attempting To Classify A Piece of igneous Rock as Extrusive?
Extrusive igneous rocks have very small crystal grains.
Large crystal grains in an igneous rock are an indication that crystals formed?
slowly from a magma with abundant time to grow. This can suggest an intrusive or plutonic igneous rock type, such as granite. Rapid cooling leads to small crystal grains, characteristic of extrusive or volcanic igneous rocks like basalt.
What causes the difference in grain size between intrusive igenuous rocks and extrusive igenuous rocks?
Difference in temperature of the varying layers of the Earth's surface where either of the rocks solidify,causes difference in size of grains of rocks.When solidified below the Earth's surface,the grains are comparatively larger crystals than extrusive igneous ones.Intrusive rocks form underneath the Earth's surface(eg.,granite). Magma cools slowly so it has time to form large crystals.Extrusive rocks are ones that form from lava (blasted out of a volcano) so they cool very quickly, not allowing large crystals to form(eg.,obsidian).
What type of rock that forms from magma or lava is rock?
Igneous rock is formed from the cooling of magma or lava.
