0
Granite. Most of the crust is composed of granite. Feldspar is the most common mineral in the earth's crust.
Silicon, (Si) and Alluminium, (Al).
Wiki User
∙ 12y ago
Add your answer:
Earn +20 pts
Why is the main reason that oceanic crust is heavier than continental crust?
Oceanic crust is mafic in composition and continental crust is felsic in composition. Mafic minerals generally have a higher density than felsic minerals and therefore, the oceanic crust is heavier.
Which layer in the earth is similar to the composition of granite?
the Continental Crust
What are the two types of crust on the earth?
There are two types of crust, and they are the oceanic crust and the continental crust. Oceanic crust is thinner yet more dense than continental crust, and continental crust is on average older than oceanic crust :)
What is composition of the crust under the continents?
continental crust is made of granite and it's high in silica. I had for homework. Hope that helped!!
The average composition of the oceanic crust is thought to approximate that of?
basalt
What is the composition of continental crust?
The composition of the continental crust is granitic overall, high in silicon and aluminum, when compared to the oceanic crust.
What is the general composition of earths continental crust?
Water
Why is the main reason that oceanic crust is heavier than continental crust?
Oceanic crust is mafic in composition and continental crust is felsic in composition. Mafic minerals generally have a higher density than felsic minerals and therefore, the oceanic crust is heavier.
Which layer in the earth is similar to the composition of granite?
the Continental Crust
What continental crust has the average composition of?
Granite. Most of the crust is composed of granite. Feldspar is the most common mineral in the earth's crust.Silicon, (Si) and Alluminium, (Al).
What is the main difference between continental plates and oceanic plates?
Oceanic crust is created on Mid ocean ridges and of basaltic composition. Oceanic crust is on average comparatively young as it is subducted into the mantle in subduction zones. Oceanic crust is denser and thinner than average continental crust.The composition and age distribution of continental crust is much more complicated than that of oceanic crust. It is on average less dense and much thicker than oceanic crust and its composition is roughly that of a tonalite (something similar to a granite but with less alkali feldspar). Apart from igneous rocks and metamorphic rocks, the sedimentary rocks add a lot to the variety of lithologies found on the continents (carbonates, evaporites, sandstones, shales, conglomerates, etc.).As opposed to oceanic crust, continental crust is not subducted into the mantle in large quantities but has been gradually accumulating over geologic timescales.
What is the density of continental crust and oceanic crust?
The specific gravity, on average, of continental crust is 2.7. For oceanic crust, it's 2.9.
What are the two types of crust on the earth?
There are two types of crust, and they are the oceanic crust and the continental crust. Oceanic crust is thinner yet more dense than continental crust, and continental crust is on average older than oceanic crust :)
What is crust of the geosphere?
== == The Crust--The outer skin of the planet is composed of igneous, metamorphic, and sedimentary rock. Continental Crust: Comprised predominately of rocks most resembling granite, the continental crust is relatively thick compared to the oceanic crust with a depth that ranges from 30 km to 50 km. The average specific gravity of continental crustal rock is 2.7. Oceanic Crust: At an average depth of 5 km to 10 km, the oceanic crust is thinner than the continental crust. Oceanic crustal rocks are composed mainly of the igneous rocks basalt, diabase, and gabbro, which are mafic in composition. The average specific gravity of oceanic crustal rock is 2.9.
What composition is earths crust?
oceanic crust is made of basalt while continental crust is made of silica rich rocks like granite.
What is composition of the crust under the continents?
continental crust is made of granite and it's high in silica. I had for homework. Hope that helped!!
Why does the continental crust go father down into the mantle than the oceanic crust?
Continental crust, on average, is much thicker than oceanic crust. Because of the principles of isostacy and buoyancy, the continental crust will protrude more deeply into the asthenosphere than oceanic crust.
