Dude, i know what your playing at. I have the exact same book you have/had. seriously. Why are you doing this for every single question? Do you really think it's gonna help you in the long run? Just think about it.
could just answer it
+ your doing the exact same thing or else you wouldn't be able to comment
think about it
Grantic magma is rich in silica with abundant sodium and potassium. It has an extremely high viscosity and cools to form light-colored rocks.
Basaltic magma is low in silica with abundant iron and magnesium. It has the lowest viscosity among the common types of magma and cools to form dark-colored rocks.
Basaltic magma is acidic, fluid, rich in iron and magnesium but poor in silica. Granitic magma is basic, viscous, a high melting point, with a high percentage of silica.
granitic magmas contain more silica than basaltic magmas.
Basaltic Magmas are dark colored, heavy and are ferromagnesian in composition, so they most times do not form light colored rocks, rather, the Felsic Granitic Magma forms the light colored rocks with lower densities.
Basaltic composition magmas occur in oceanic hotspots where a mantle plume interacts with oceanic lithosphere.
Basaltic magmas are associated with fissure eruptions creating lava flows spilling out from cracks in the crust. This is because basaltic magmas are more viscous and contain a lower concentration of gases than rhyolitic magma and therefore are unable to build up sufficient pressure to produce explosive eruptions.
Usually a dense basaltic magma with low water content.
granitic magmas contain more silica than basaltic magmas.
Basalt and Granite are both made from the same magma.
There are many different types of ignoues rock, but as a general description, mafic, felsic and intermediate rocks are formd from basaltic, granitic, and andesitic magmas respectively.
Basaltic Magmas are dark colored, heavy and are ferromagnesian in composition, so they most times do not form light colored rocks, rather, the Felsic Granitic Magma forms the light colored rocks with lower densities.
Yes, rhyolitic magmas are several hundred °C colder than basaltic magmas. This is because the melting point of a rhyolitic magma is much lower than that of basaltic magma. Instead of heating up rhyolitic magma much above its melting point it will ascend and either crystallize in the Earth's interior as a pluton or erupt.
Basaltic composition magmas occur in oceanic hotspots where a mantle plume interacts with oceanic lithosphere.
This statement would be considered incorrect. Basaltic magmas originate from the melting of mantle rock or oceanic crust.
Basaltic magmas are associated with fissure eruptions creating lava flows spilling out from cracks in the crust. This is because basaltic magmas are more viscous and contain a lower concentration of gases than rhyolitic magma and therefore are unable to build up sufficient pressure to produce explosive eruptions.
False there classified as basaltic, andesitic and rhyolitic based on amount of silica.
Usually a dense basaltic magma with low water content.
Composite volcanoes can contain a wide variaty of magmas ranging from basaltic to rhyolitic.
Rifts are areas in the Earth's lithosphere where plates are moving apart and being infilled with basaltic magmas from the asthenosphere.