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What do pillow basalts indicate about the environment of volcanism?
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∙ 15y ago
Eruption was taking place under water or close to water.
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∙ 15y ago
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Why are crystals in pillow basalt smaller then ones in basalt?
A factor that determines crystal size in igneous rocks is the speed in which the lava/ magma crystallised or froze. As pillow basalts form at mid ocean ridges where magma is erupted into direct contact with the cold sea water the crystals form very fast and are therefore small. Other basalts erupted on land still have relatively small crystals and crystallised relatively fast but overall slower then pillow basalts.
Why are the crystals in pillow basalt smaller than those in many other examples of basalt?
A factor that determines crystal size in igneous rocks is the speed in which the lava/ magma crystallised or froze. As pillow basalts form at mid ocean ridges where magma is erupted into direct contact with the cold sea water the crystals form very fast and are therefore small. Other basalts erupted on land still have relatively small crystals and crystallised relatively fast but overall slower then pillow basalts.
What type of magma forms at mid-ocean ridges?
pillow lava named that because when it cools it looks like pillows.
What does your pillow was a cloud after a long day mean?
It means the pillow was fluffy and comfortable and soft
How is a cloud like a pillow?
A cloud is white like a pillow and looks soft like a pillow...your answer depends on if its for English or science or just cos you want to know! :P
Pillow basalts are indicators that the lava was erupted where?
Under water.
Why are the crystals in pillows basalts smaller than those in many other examples of basalts?
A factor that determines crystal size in igneous rocks is the speed in which the lava/ magma crystallised or froze. As pillow basalts form at mid ocean ridges where magma is erupted into direct contact with the cold sea water the crystals form very fast and are therefore small. Other basalts erupted on land still have relatively small crystals and crystallised relatively fast but overall slower then pillow basalts.
Why are crystals in pillow basalt smaller then ones in basalt?
A factor that determines crystal size in igneous rocks is the speed in which the lava/ magma crystallised or froze. As pillow basalts form at mid ocean ridges where magma is erupted into direct contact with the cold sea water the crystals form very fast and are therefore small. Other basalts erupted on land still have relatively small crystals and crystallised relatively fast but overall slower then pillow basalts.
Why are the crystals in pillow basalt smaller than those of in many other examples of basalt?
A factor that determines crystal size in igneous rocks is the speed in which the lava/ magma crystallised or froze. As pillow basalts form at mid ocean ridges where magma is erupted into direct contact with the cold sea water the crystals form very fast and are therefore small. Other basalts erupted on land still have relatively small crystals and crystallised relatively fast but overall slower then pillow basalts.
Why are the crystals in pillow basalt smaller than those in many other examples of basalt?
A factor that determines crystal size in igneous rocks is the speed in which the lava/ magma crystallised or froze. As pillow basalts form at mid ocean ridges where magma is erupted into direct contact with the cold sea water the crystals form very fast and are therefore small. Other basalts erupted on land still have relatively small crystals and crystallised relatively fast but overall slower then pillow basalts.
Why are the crystals in pillow basalt than those in many other examples of basalt?
A factor that determines crystal size in igneous rocks is the speed in which the lava/ magma crystallised or froze. As pillow basalts form at mid ocean ridges where magma is erupted into direct contact with the cold sea water the crystals form very fast and are therefore small. Other basalts erupted on land still have relatively small crystals and crystallised relatively fast but overall slower then pillow basalts.
What happens to the magma after being pushed upward and exposed at the surface of the ocean floor?
The lava would form pillow basalts.
What happen to the magma after being pushed upward and exposed at the surface of the ocean floor?
The lava would form pillow basalts.
Why are the Crystal's in pillow basalt smaller than those of in other example of basalt?
Pillow basalts are lavas that were erupted and cooled in sea water. Therefore, they have had very little time to form crystals of any size, during rapid solidification, when compared to most land or air-born eruptions.
What is a pillow lava and where can you find one?
A pillow lava is a lava which has been erupted under water. Because of the cooling effect and pressure of the water it forms pillow-like structures which sometimes build up into thick deposits. Ancient deposits can be found all over the world, though newer lavas can be found in areas such as Iceland where a combination of ice caps and volcanism create suitable places for pillows to form.
How can using a neck pillow prevent pain?
A neck pillow is specifically designed to conform to the shape of your neck. The shape creates an environment that is conducive to supporting the neck with proper alignment, reducing pain.
Is Loihi volcano explosive or non explosive?
Loihi is generally not explosive as it produces basaltic lava. Since the vent is still under water it mainly produces pillow basalts. As the growing seamount reaches the ocean surface the potential will arise for occasional phreatic eruptions, which can be explosive.
