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The basic processes involves in igneous rock formation are; 1. Melting (Magma, formation of molten substance). 2. Volcanicity (Eruption, movement of magma). 3. Cooling (Change in temperature). 4. Crystallization (Mineralization, formation of crystals and minerals). 5. Solidification (Consolidation into a solid mass to form igneous rock).
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A certain igneous rock contains about 25 percent dark silicate minerals The remainder of the rock is mostly plagioclase feldspar What type of composition does tthis igneous rock have?
ultramafic
How tall is Mitchell hope?
mostly likely 5'5..
Why does earth have more sedimentary rock than metamorphic rock or igneous rock?
Most Earth rock is igneous or metamorphic even though visible surface bedrock is mostly sedimentary. Of the total Earth rock volume, only a tiny fraction is sedimentary.
Explain why geologists say that all rock was originally igneous rock?
The oceanic plates of the crust are almost entirely basalt, an igneous rock. The continental crust in underlain by mostly granites, also igneous.
Is coal extrusive igneous rock?
No, coal is a sedimentary rock composed mostly of the remains of ancient vegetation (except for anthracite coal which is a metamorphic rock, see image above)..
Which rock is mostly likely a sedimentary rock?
One showing an igneous nature.
Which rock is mostly likely a non sedimentary rock?
One showing an igneous nature.
Does the sun driver the processes that form igneous and metamorphic rocks?
No. Heat from the interior of the Earth trying to reach the surface drives lithospheric plate movements which are mostly responsible for the formation of igneous and metamorphic rocks.
How An igneous rock that contains mostly Pyrexes and Olive has?
The igneous rock with mostly pyroxenes and olivine is likely a mafic rock, such as basalt or gabbro. These minerals are common in mafic rocks due to their high iron and magnesium content. Mafic rocks are associated with oceanic crust and volcanic activity.
What does the Earths crust mostly consist of?
Igneous rock.
What is the Continental crust composed of mostly?
Igneous rock.
What does earth's crust consist mostly of?
Igneous rock.
What does pyroclastic?
Pyroclastic describes a rock formation mostly consisting of rock fragments from volcanoes or crushed during an eruption.
When and where are tornadoes likely to form?
during spring and summer and mostly around rural areas
Where would you likely find extrusive igneous rock?
They are commonly found under ground or near volcanoes
What type of formation is a mid-oceanic ridge?
Its mostly a basaltic formation, caused as a result of ferromagnetic magmatic emergence at zones of seafloor spreading during oceanic-oceanic divergence.
What igneous rock contains mostly pyroxene and olivine?
Ultramafic igneous rocks are comprised mostly of olivine and pyroxene. Examples include peridotite (pegmatic and porphyritic) and komatite.
