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.
flood basalts and volcanoes
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.
a fissure eruption is magma gets erupted inside the earth
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.
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.
flood basalts and volcanoes
flood basalts and volcanoes
flood basalts
flood basalts
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.
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
a fissure eruption is magma gets erupted inside the earth
There are six types: Shield, Strato. Caldera, Monogetic fields, Flood Basalts and Mid-ocean ridges.
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.
Because the basalt lava is very "runny" as compared to lavas that contain more silica.
Richard Harold Lefebvre has written: 'Variations of flood basalts of the Columbia River Plateau, central Washington' -- subject(s): Basalt, Geology
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.