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Broadly igneous rocks are divided in two categories 1) Extrusive Rock 2) Intrusive Rocks.
Intrusive rocks, in general , have density 150-200(pcf) their compressive strength ranges form 3-30 (Psi*100). Usually the discontinuities found in these rocks are joints, Mostly tight joints, so the permeability and storage capacity is low.
The extrusive rocks have density range from 120-200 (pcf) and their compressive strength ranges is 1-30(Psi*100).As these rocks are formed by the consolidation of lave on the surface of earth, and are exposed to the weathering agents more then the intrusive rocks, so these have many type of discontinuities in them, the most common are joints, voids and flow fractures. The presence of discontinuities increase the permeability and ability to store the fluids,mostly water. Hence its permeability is from low to high, depending upon the concentration of discontinuities.
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What describes rock that was formed when molten rock cooled down?
Igneous rock is formed.
When Magma is launched from a volcano forms what type of rock?
A volcano is made of extrusive igneous rock. The specific type of igneous rock will vary from one volcano to another.
What is igneous rock formed from magma?
An igneous rock formed from magma is intrusive.
What igneous rock forms from below the Earth's surface?
intrusive igneous rock
What is the igneous rock between granite and basalt?
Andesite is considered an intermediate rock between granite (felsic igneous rock) and basalt (mafic igneous rock), based on chemical composition.
Mineral properties of quatrz?
igneous rock
What are the engineering considerations for igneous sedimentary and metamorphic rocks?
Engineerig aspect of igneous,metmorphic,sedimentary rock?
What type of rock forms when molten rock cools?
Rock that forms from molten rock that cools and solidifies is called igneous rock.
What describes rock that was formed when molten rock cooled down?
Igneous rock is formed.
Type of rock formed from molten rock?
Igneous rock is formed when magma cools and becomes solid.
What type of rock is a pumice rock?
an igneous rock.
What can change a igneous rock into a metamorphic rock?
The process that can change an igneous rock into a metamorphic rock is called metamorphism. This occurs when the igneous rock is subjected to high temperatures and pressure deep within the Earth's crust. These conditions cause the minerals in the rock to recrystallize and realign, forming a new metamorphic rock with different physical and chemical properties.
Is obsidian metamorphic igneous or sedimentary?
Obsidian is an igneous rock.
What kind of rock is formed after a volcano erupts?
Extrusive igneous rock such as basalt, rhyolite, pumice, and obsidian.
When magma is cooled it becomes what?
Cooling and solidifying magma turns into igneous rock.
What is igneous rock formed from magma below Earth's surface is called?
It is called an intrusive igneous rock.
Is pumice igneous rock metamorphic rock or sedimentary rock?
Igneous Rock
