0
How would you compare and contrast basaltic and granitic magmas?
Wiki User
∙ 14y ago
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
Wiki User
∙ 14y ago
Wiki User
∙ 9y agoGrantic 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.
Wiki User
∙ 9y agoBasaltic 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.
Add your answer:
Earn +20 pts
Why are granitic magmas thicker than basaltic magmas?
granitic magmas contain more silica than basaltic magmas.
Does Light-colored rocks with lower densities form from basaltic magma?
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.
What are the tectonic settings associated with the formation of basaltic composition magmas?
Basaltic composition magmas occur in oceanic hotspots where a mantle plume interacts with oceanic lithosphere.
What type of eruptions do mafic magmas cause?
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.
What kinds of magmas forms at divergent boundaries?
Usually a dense basaltic magma with low water content.
Why are granitic magmas thicker than basaltic magmas?
granitic magmas contain more silica than basaltic magmas.
What do basaltic and granitic magmas have in common?
Basalt and Granite are both made from the same magma.
What are the magmas the three families of igneous rock form from?
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.
Does Light-colored rocks with lower densities form from basaltic magma?
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.
Will rhyolitic magmas erupt at lower temperatures than basaltic magmas?
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.
What are the tectonic settings associated with the formation of basaltic composition magmas?
Basaltic composition magmas occur in oceanic hotspots where a mantle plume interacts with oceanic lithosphere.
Most basaltic magmas are believed to form by partial melting of granite in the lower crust and upper mantle?
This statement would be considered incorrect. Basaltic magmas originate from the melting of mantle rock or oceanic crust.
What type of eruptions do mafic magmas cause?
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.
Are magmas classified as intrusive and extrusive?
False there classified as basaltic, andesitic and rhyolitic based on amount of silica.
What kinds of magmas forms at divergent boundaries?
Usually a dense basaltic magma with low water content.
What type of magma does a composite volcano have?
Composite volcanoes can contain a wide variaty of magmas ranging from basaltic to rhyolitic.
What is a geological rift?
Rifts are areas in the Earth's lithosphere where plates are moving apart and being infilled with basaltic magmas from the asthenosphere.
