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No. They are usually fine grained.
No, lava rocks do not have large grains they have very small grains.
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∙ 10y ago
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Which is true about how all detrital rocks form?
Detrital rocks are formed by pre-formed particles from the ground. ! :)
What rock has large mineral grains?
Fine grains of rocks are referred to as "clasts." The word "clast" comes from the Greek word "klastos," meaning "broken."
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).
Where are the youngest rocks found?
usually the youngest rocks are found on the top of the earths crust
List of types of rocks?
The list of the 3 types of rocks: 1. Igneous Rocks - These rocks form from magma trapped below the earth's surface and from lava that cooled on the earth's surface. 2. Sedimentary Rocks - These rocks form from loose materials such as fragments of rocks, plant and animal remains, and mineral grains that have been moved from one place and deposited in another place usually through the action of water. 3. Metamorphic Rocks - These rocks formed from igneous, sedimentary and other metamorphic rocks as a result of heat, pressure and chemical action.
What is a large group of rocks which form magma or lava?
Igneous rocks.
Which is true about how all detrital rocks form?
Detrital rocks are formed by pre-formed particles from the ground. ! :)
Does granitic lava explode?
No Granites are usually intrusive rocks.
Large group of rocks formed from magma or lava?
Igneous rock.
What rock has large mineral grains?
Fine grains of rocks are referred to as "clasts." The word "clast" comes from the Greek word "klastos," meaning "broken."
What large group of rocks which form from magma of lava?
another name for the mineral crystals in cooling magma or lava
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).
Do large grain rocks form from lava or magma?
they form from both...ithink
Are all black rocks lava lava rocks?
no, there are more rocks
Where are the youngest rocks found?
usually the youngest rocks are found on the top of the earths crust
What type of rocks come out of a lava dome volcano?
Usually rhyolite or dacite.
What is replaced after repeated eruptions of lava is spread over a large area?
rocks or ashes.
