What are the examples of extrusive igneous rocks?
Types of extrusive igneous rocks include: pumice, obsidian, andesite, rhyolite, and basalt.
What is plutonic igneous rock?
Intrusive, or plutonic, igneous rock forms when magma is trapped deep inside the Earth. Intrusive rocks have a coarse grained texture. Extrusive Igneous Rocks: Extrusive, or volcanic, igneous rock is produced when magma exits and cools above (or very near) the Earth’s surface.
What are the 6 common igneous rocks?
These rocks include: andesite, basalt, dacite, obsidian, pumice, rhyolite, scoria, and tuff. Pictures and brief descriptions of some common igneous rock types are shown on this page.
Is granite an igneous rock?
Granite is an igneous rock composed of mostly two minerals: quartz and feldspar. It is an intrusive rock, meaning that it crystallized from magma that cooled far below the earth’s surface. It is the most common igneous rock.
Is Basalt an igneous rock?
basalt, extrusive igneous (volcanic) rock that is low in silica content, dark in colour, and comparatively rich in iron and magnesium. Some basalts are quite glassy (tachylytes), and many are very fine-grained and compact.
What is Hypabyssal igneous rock?
A subvolcanic rock, also known as a hypabyssal rock, is an intrusive igneous rock that is emplaced at depths less than 2 km (1.2 mi) within the crust, and has intermediate grain size and often porphyritic texture between that of volcanic rocks and plutonic rocks.
Is pumice basaltic or granitic?
Classification of Igneous Rocks
| TEXTURE | Felsic | Mafic |
|---|---|---|
| Phaneritic | Granite | Gabbro |
| Aphanitic | Rhyolite | Basalt |
| Vesicular | Pumice | Scoria |
| Glassy | Obsidian |
Is basalt an igneous rock?
Is gneiss an igneous rock?
Gneiss is a coarse to medium grained banded metamorphic rock formed from igneous or sedimentary rocks during regional metamorphism.
