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An extrusive rock with a composition similar to granite but with smaller crystals?
The rock is likely a rhyolite, which is an extrusive igneous rock with a composition similar to granite but formed from rapidly cooling lava, resulting in smaller crystals. Rhyolite typically exhibits a fine-grained texture due to its quick cooling process at the Earth's surface.
What can you tell about an igneous rock that has coarse-texture?
It is most likely extrusive.
Do you think extrusive or intrusive igneous rocks are likely to have larger crystals?
If a rock has large crystals, it is an intrusive rock. Intrusive rocks form underneath the Earth's surface. Magma cools slowly so it has time to form large crystals. An example is granite, where you can see the crystals with your naked eye. Rocks that have small crystals are extrusive rocks. Extrusive rocks are ones that form from lava (blasted out of a volcano) so they cool very quickly, not allowing large crystals to form. An example is obsidian, where you cannot visibly see the small crystals; it just looks like one black, glassy rock.
What igneous rock is made up of mica feldspar and quartz?
The igneous rock most likely described is granite, which is composed predominantly of mica (specifically muscovite or biotite), feldspar, and quartz. This rock type forms from the cooling and crystallization of molten magma deep within the Earth's crust.
Granite is uplifted by the movement of tectonic plates It will most likely become?
Granite, when uplifted by the movement of tectonic plates, is more likely to become a mountain as it gets pushed up towards the Earth's surface. This process is a result of the immense pressure and forces exerted by the tectonic plates colliding or moving past each other.
If granite within the earth melts then erupts at the surface what type of extrusive rock is likely form?
A felsic extrusive igneous rock, such as rhyolite or obsidian.
An extrusive rock with a composition similar to granite but with smaller crystals?
The rock is likely a rhyolite, which is an extrusive igneous rock with a composition similar to granite but formed from rapidly cooling lava, resulting in smaller crystals. Rhyolite typically exhibits a fine-grained texture due to its quick cooling process at the Earth's surface.
Is granite exstrusive?
Due to its high acidic and viscous nature, granite will most likely be intrusive, causing dykes that cut through bedding planes.
Why is the ocean floor more likely to have extrusive rocks than intrusive rocks?
The ocean floor is more likely to have extrusive rocks because these rocks form from lava that erupts directly onto the surface of the ocean floor, cooling quickly in contact with seawater. This process occurs primarily at mid-ocean ridges, where tectonic plates diverge and magma rises to create new oceanic crust. In contrast, intrusive rocks form from magma that cools slowly beneath the Earth's surface, which is less common in oceanic environments due to the prevalent tectonic activity that promotes rapid cooling and solidification at the surface.
Which rocks are more likely to have a coarse grained extrusive or intrusive?
extrusive
If a lava flow at earths surface had a basaltic composition what rock type would the flow likely be?
A Mafic Extrusive Igneous Rock.
Why could a granite polisher scratch the stones surface?
Most likely it was a loose chunk of granite that popped off, got under the pad and caused the scratch. It happens.
What can you tell about an igneous rock that has coarse-texture?
It is most likely extrusive.
Do you think extrusive or intrusive igneous rocks are likely to have larger crystals?
If a rock has large crystals, it is an intrusive rock. Intrusive rocks form underneath the Earth's surface. Magma cools slowly so it has time to form large crystals. An example is granite, where you can see the crystals with your naked eye. Rocks that have small crystals are extrusive rocks. Extrusive rocks are ones that form from lava (blasted out of a volcano) so they cool very quickly, not allowing large crystals to form. An example is obsidian, where you cannot visibly see the small crystals; it just looks like one black, glassy rock.
Under which conditions will the amount of water in surface runoff be most likely to exceed the amount of water recharging an aquifer?
heavy rain on sloped granite
What igneous rock is made up of mica feldspar and quartz?
The igneous rock most likely described is granite, which is composed predominantly of mica (specifically muscovite or biotite), feldspar, and quartz. This rock type forms from the cooling and crystallization of molten magma deep within the Earth's crust.
Usually light-colored rock that is found in continental crust?
The rock is likely granite. Granite is a common igneous rock found in continental crust that is light in color due to its high quartz and feldspar content. It forms from the slow cooling of molten magma beneath the Earth's surface.
