Igneous Rocks - Types, Properties, and Examples
Jan 31, 2024 · Main Types of Igneous Rocks. The main classification of igneous rocks is by their formation: Volcanic or Extrusive Igneous Rocks. These rocks form when magma erupts onto the Earth’s surface, where it is called lava, and cools rapidly. This rapid cooling often results in fine-grained textures. Examples of extrusive igneous rocks include:
Igneous rock - Wikipedia
Igneous rocks are classified according to mode of occurrence, texture, mineralogy, chemical composition, and the geometry of the igneous body. The classification of the many types of igneous rocks can provide important information about the conditions under which they formed.
Igneous Rocks | Pictures of Intrusive and Extrusive Rock Types
We describe these two basic types: Intrusive igneous rocks crystallize below Earth's surface, and the slow cooling that occurs there allows large crystals to form. Examples of intrusive igneous rocks are: diabase, diorite, gabbro, granite, pegmatite, and peridotite.
Pictures and Descriptions of Igneous Rock Types - ThoughtCo
Jun 2, 2019 · Learn more about the major types of igneous rock, which includes plutonic, intrusive, and extrusive igneous rocks.
Igneous Rocks – Definition, Types, Examples, & Pictures
Feb 17, 2023 · The igneous rocks are one of the three main types of rock found on earth; the others are sedimentary rock and metamorphic rock. They are the hardest and heaviest rock on earth. They are also called the ‘new’ rocks or magmatic rocks.
Igneous Rocks - Definition, Characteristics, Types, Examples ...
Igneous rocks are defined as types of rocks that are formed when molten rock (rock liquefied by intense heat and pressure) cools to a solid state. Lava is molten rock flowing out of fissures or vents at volcanic centres (when cooled, they form rocks such as basalt, rhyolite, or obsidian).
Igneous rock | Characteristics, Examples, Formation, & Types ...
Nov 12, 2024 · Igneous rocks constitute one of the three principal classes of rocks, the others being metamorphic and sedimentary. Igneous rocks are formed from the solidification of magma, which is a hot (600 to 1,300 °C, or 1,100 to 2,400 °F) molten or partially molten rock material.