0
How do the appearances of extrusive and intrusive igneous rocks differ?
Wiki User
∙ 6y agoWant this question answered?
Be notified when an answer is posted
Add your answer:
Earn +20 pts
What is the similarities between intrusive and extrusive igneous rock?
Both are formed from the solidification of cooling magma.
In general how does the density of a light colored igneous rock differ from that of a dark colored igneous rock?
Light-coloured igneous rocks, such as granite, have a higher silica content and lower iron and magnesium than darker ones, such as basalt. Since iron and magnesium are very dense minerals, this makes darker igneous rocks more dense than lighter ones.
Why do different types of rocks have observable characteristics?
The answer is implicit in your question - they are physical "objects" of different characteristics so their appearances differ. That's the first way to determine a rock's type: look it it!
What are the three ways that igneous rocks form or differ?
Three ways ingenuous rocks form are by magma cooling below, at or beneath the surface. Magma forms when rock is heated, changes composition and/or pressure is released.
How does mass differ from rate?
How does what differ from mass?
How do intrusive and igneous rocks differ?
Intrusive rocks are formed from magma below the surface; extrusive rocks are formed from magma on the surface of Earth.
How does extrusive differ from intrusive?
Intrusive features are found on the inside of the volcano e.g.magma chamber, and extrusive features are found on the outside e.g. crater.
How do Metamorphic and Igneous Rocks differ?
Metamorphic rock differs from Igneous rock by, Metamorphic rock forms when sedimentary and igneous rocks change under heat and pressure. Igneous rocks form as lava cools and hardens.
How do igneous rocks differ from one another?
extrusive and intrusive OR plutonic and volcanic
What is the similarities between intrusive and extrusive igneous rock?
Both are formed from the solidification of cooling magma.
How do igneous rocks that form from cooling lava differ from igneous rocks that form from cooling magma?
The difference between the two lies in the mineral crystal size. Rocks that form from lava on the surface will cool quickly, with little time for crystal formation. Rocks that form from magma below the surface will cool slowly, resulting in larger mineral crystals. Chemically, they could be identical.
How does a granite and a gabbro differ?
Granite is a felsic intrusive igneous rock, its light in colour due to the predominance of acidic magma. while Gabbro is a mafic intrusive igneous rock, its dark in colour as a result of high ferromagnetic composition. They are both coarse grained but only differs basically in chemical composition of the magma.
How does Basalt differ from granite?
Basalt is an extrusive, mafic igneous rock, which means that it solidifies from lava at or near the surface, and is composed partly of iron and magnesium minerals. Granite is an intrusive felsic igneous rock, meaning that it solidifies from magma below the surface, and is relatively high in minerals containing silicon and aluminum. Basalt has a higher specific gravity than granite, and is also darker than granite. Basalt may have visible air pockets, frozen in place when it solidified from lava. Granite will not exhibit this characteristic. Basalt has mineral crystals that are not visible with the naked eye. Granite has visible mineral crystals.
How does the rock under the continents differ from rock under the oceans?
The rock of the continental crust is mostly granitic in composition, meaning it is a high silicate intrusive igneous rock. The rock of the oceanic crust is basaltic in origin, meaning it is lower in silica and higher in heavier elements like iron and magnesium and is classified as a mafic igneous rock. Oceanic crust is therefore more dense than continental crust.
How does the density of a light colored igneous rock differ from that of a dark colored igneous rock?
Normally, light colored igneous rocks are less dense compared to dark colored igneous rocks. This is because the light colored rocks have a less iron in them.
How does a basalt differ from gabbro?
Gabbro has much larger grains that basalt does. This is because basalt cools faster than gabbro and has less time to form crystals.
How does the density of a light colored rock differ from the density of dark colored rock?
Normally, light colored igneous rocks are less dense compared to dark colored igneous rocks. This is because the light colored rocks have a less iron in them.
