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Basaltic magma (properly called mafic magma) forms in areas of the mantle where silica (SiO2) is low, but iron and magnesium is high. This usually and most famously occurs along spreading ridges, where oceanic crust is formed, but can occur anywhere -- including surface volcanoes, which can form flood basalts as we commonly know them.
What else can I help you with?
What do hot spots do?
flood basalts and volcanoes
Why don't flood basalts build volcanic cones?
Flood basalts build volcanic cones because flood basalts are believed to originate when the head of a mantle hotspot first arrives beneath the base of a plate. Because of this, they are unable to build volcanic cones.
What is fissure mean?
a fissure eruption is magma gets erupted inside the earth
Can repeated eruptions of relatively fluid lava from fissures eventually cause an area to be covered by flood basalts?
Yes, repeated eruptions of fluid lava from fissures can lead to the accumulation of thick layers of basaltic lava flows known as flood basalts. These eruptions commonly occur in large igneous provinces and can cover extensive areas, altering the landscape significantly.
What is a example of volcanic activity during the Mesozoic era?
One example would be the flood basalts of the Deccan Traps of India, but there are many many more, as the Mesozoic era is a huge time period.
What do hot spots do?
flood basalts and volcanoes
What do hot spots form?
flood basalts and volcanoes
The Columbia plateau is an excellent example of?
flood basalts
Other than volcanoes what can hot spots form?
flood basalts
Why don't flood basalts build volcanic cones?
Flood basalts build volcanic cones because flood basalts are believed to originate when the head of a mantle hotspot first arrives beneath the base of a plate. Because of this, they are unable to build volcanic cones.
What has the author Robert J Carson written?
Robert J. Carson has written: 'Flood basalts and glacier floods' -- subject(s): Guidebooks, Geology, Flood basalts 'Quaternary geology of the south-central Olympic Peninsula, Washington' -- subject(s): Geology, Geology, Stratigraphic, Stratigraphic Geology
What is fissure mean?
a fissure eruption is magma gets erupted inside the earth
How many different kinds of volcanoes are there and what are they?
There are six types: Shield, Strato. Caldera, Monogetic fields, Flood Basalts and Mid-ocean ridges.
Can repeated eruptions of relatively fluid lava from fissures eventually cause an area to be covered by flood basalts?
Yes, repeated eruptions of fluid lava from fissures can lead to the accumulation of thick layers of basaltic lava flows known as flood basalts. These eruptions commonly occur in large igneous provinces and can cover extensive areas, altering the landscape significantly.
Why do flood basalts cover so much area when they erupt?
Because the basalt lava is very "runny" as compared to lavas that contain more silica.
What has the author Richard Harold Lefebvre written?
Richard Harold Lefebvre has written: 'Variations of flood basalts of the Columbia River Plateau, central Washington' -- subject(s): Basalt, Geology
What is a example of volcanic activity during the Mesozoic era?
One example would be the flood basalts of the Deccan Traps of India, but there are many many more, as the Mesozoic era is a huge time period.
