0
Extrusive rocks form from lava that cools quickly on the Earth's surface, allowing gases to escape and create air bubbles or vesicles as the lava solidifies. In contrast, intrusive rocks crystallize slowly beneath the surface, where gases are trapped within the molten rock, preventing the formation of vesicles. This difference in cooling rates and environments leads to the distinct textures observed in extrusive and intrusive igneous rocks.
What else can I help you with?
What are the properties of a Extrusive rock?
Extrusive rocks are formed from lava that cools quickly on the Earth's surface, resulting in fine-grained textures such as basalt or rhyolite. They often contain vesicles or cavities formed by gas bubbles trapped in the lava. Extrusive rocks tend to be dark in color and have a lower silica content compared to intrusive rocks.
Igneous rocks are described as intrusive or extrusive based on?
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.
Is apatite intrusive or extrusive?
Apatite is typically found as an accessory mineral in both intrusive and extrusive igneous rocks. It is more common in intrusive rocks like granite, but can also be found in extrusive rocks like basalt.
Is marble an extrusive or an intrusive rock?
Neither. The terms intrusive and extrusive apply to igneous rocks; marble is metamorphic.
Which rocks are more likely to have a coarse grained extrusive or intrusive?
extrusive
Are intrusive rocks vesicular?
Intrusive rocks are typically not vesicular because they cool slowly beneath the Earth's surface, allowing gas to escape and preventing the formation of vesicles. Vesicles are more commonly found in extrusive rocks that cool quickly on or near the Earth's surface, trapping gas bubbles within the rock.
What are the properties of a Extrusive rock?
Extrusive rocks are formed from lava that cools quickly on the Earth's surface, resulting in fine-grained textures such as basalt or rhyolite. They often contain vesicles or cavities formed by gas bubbles trapped in the lava. Extrusive rocks tend to be dark in color and have a lower silica content compared to intrusive rocks.
What are the main two types of igneous rocks?
Igneous rocks are classified as either extrusive or intrusive. Extrusive rocks form from lava at or above the ground, and intrusive rocks form from magma below the ground. Granite is intrusive, pumice is extrusive.
Igneous rocks are described as intrusive or extrusive based on?
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.
Does lava produce Extrusive or Intrusive rocks?
extrusive
Why do some igneous rocks have bubbles or pores and are these rocks intrusive or extrusive?
The bubbles and pores are from trapped gasses which expanded in the molten material as it neared the surface. They're usually found in extrusive igneous rocks, those that have solidified in the air or on the surface.
Is apatite intrusive or extrusive?
Apatite is typically found as an accessory mineral in both intrusive and extrusive igneous rocks. It is more common in intrusive rocks like granite, but can also be found in extrusive rocks like basalt.
What is the difference between an intrusive and an extrusive igneous rocks?
"intrusive" means forced into something, "extrusive" means forced out onto the surface. The igneous magma reaching the surface is therefore extrusive , producing extrusive igneous rocks, and all the rest of the magma is intrusive, producing intrusive igneous rocks.
Contrast the ways in which extrusive and intrusive rocks are formed?
Intrusive rocks form within the crust of the Earth while extrusive rocks form on the surface.
Are intrusive rocks volcanic?
No. Volcanic rocks are extrusive. Intrusive rocks are sometimes called plutonic.
Is schist an intrusive or extrusive rock?
Neither, Igneous rock is either intrusive or extrusive. Thats what intrusive and extrusive is... A igneous rock.
Why do holes form in extrusive rocks?
the holes in extrusive igneous rocks (lava) are called vesicles. They are formed by gas escaping from the rock when molten, leaving bubbles in the melt which which may be preserved when the lava solidifies
