0
Igneous rocks are described as intrusive or extrusive based on formation. Intrusive rocks forms underneath the earth surface, while extrusive rocks forms on the surface of earth.
Wiki User
∙ 9y ago
Add your answer:
Earn +20 pts
Is gabbro an intrusive or extrusive igneous rock how do you know?
Intrusive, or plutonic, based upon the size of the crystals. Intrusive igneous rocks tend to have larger and more developed crystals than volcanic igneous rocks because of minimal exposure to air, causing the magma to cool more slowly.
How igneous rock classified?
Geologists classify rocks by where they are formed; above ground or under ground
What is igneous rock?
Igneous rock is one of the three main rock types based on the method of its formation. It is also referred to as plutonic or volcanic rock depending on where it formed. In a nutshell, to be classified as igneous, a rock must have crystallized and solidified from molten rock (magma) either below ground (intrusive igneous rock) or at or near the surface (extrusive igneous rock).
Was igneous rocks were classified by their their origin texture and shape?
No, igneous rocks are not classified by their shape. They are primarily classified based on their origin (either intrusive or extrusive) and their texture (coarse-grained, fine-grained, glassy, etc.). Shape or form is not a major factor in the classification of igneous rocks.
What does quick cooling of ejected lava result in?
Quick cooling lava will result in extrusive igneous rock, a type of rock classification based on its small crystals being formed from lack of time for growth during solidification.
Is gabbro an intrusive or extrusive igneous rock how do you know?
Intrusive, or plutonic, based upon the size of the crystals. Intrusive igneous rocks tend to have larger and more developed crystals than volcanic igneous rocks because of minimal exposure to air, causing the magma to cool more slowly.
Igneous rock are classified based upon their?
There are two types of igneous rocks; intrusive and extrusive. Intrusive igneous rocks are formed underneath the earth's surface from magma where it cools slower and develops large crystal structures. Extrusive igneous rocks are formed above the earth's surface from lava that cools quickly and creates rocks with smaller, finer crystal structures.
How igneous rock classified?
Geologists classify rocks by where they are formed; above ground or under ground
What two methods are used to group igneous rocks?
Igneous rocks can be either intrusive or extrusive, based on their location upon solidification from magma. Igneous rocks can also be grouped by chemistry and mineral content as felsic, intermediate, or mafic, mainly on the abundance of silicate minerals that are present.
What is the defintition of igneous?
Igneous rock is one of the three main rock types based on the method of its formation. It is also referred to as plutonic or volcanic rock depending on where it formed. In a nutshell, to be classified as igneous, a rock must have crystallized and solidified from molten rock (magma) either below ground (intrusive igneous rock) or at or near the surface (extrusive igneous rock).
What is igneous rock?
Igneous rock is one of the three main rock types based on the method of its formation. It is also referred to as plutonic or volcanic rock depending on where it formed. In a nutshell, to be classified as igneous, a rock must have crystallized and solidified from molten rock (magma) either below ground (intrusive igneous rock) or at or near the surface (extrusive igneous rock).
What does ingeous mean?
Solidified magma or lava.Igneous rock (derived from the Latin word ignis meaning fire)Igneous rock may form with or without crystallization, either below the surface as intrusive (plutonic) rocks or on the surface as extrusive (volcanic) rocks.
Was igneous rocks were classified by their their origin texture and shape?
No, igneous rocks are not classified by their shape. They are primarily classified based on their origin (either intrusive or extrusive) and their texture (coarse-grained, fine-grained, glassy, etc.). Shape or form is not a major factor in the classification of igneous rocks.
Are magmas classified as intrusive and extrusive?
False there classified as basaltic, andesitic and rhyolitic based on amount of silica.
How are geodes classified?
The igneous geodes are classified as intrusive and the sedimentary geodes are classified as chemical based on properties.
What are 2 basic classifications of Igneous rock?
The two types of igneous rock are are intrusive and extrusive, depending on where they form. Intrusive igneous rock forms underground from slow cooling magma. Extrusive igneous rock forms at or near the surface from quick cooling lava.
What does quick cooling of ejected lava result in?
Quick cooling lava will result in extrusive igneous rock, a type of rock classification based on its small crystals being formed from lack of time for growth during solidification.
