Igneous rock - Wikipedia
网页Igneous rock (igneous from Latin igneus 'fiery'), or magmatic rock, is one of the three main rock types, the others being sedimentary and metamorphic. Igneous rocks are formed through the cooling and solidification of magma or lava .
Igneous rock | Characteristics, Examples, Formation, & Types
网页5 天之前 · igneous rock, any of various crystalline or glassy rocks formed by the cooling and solidification of molten earth material. Igneous rocks constitute one of the three principal classes of rocks, the others being metamorphic and sedimentary.
Igneous Rocks – Types, Properties, and Examples
网页2024年1月31日 · Let’s explores the nature of igneous rocks, their types, formation processes, properties, classification, and textures. What Are Igneous Rocks? Igneous rocks form from the solidification of molten rock material. They are categorized based on their origin, texture, and mineral composition.
Igneous Rocks - National Geographic Society
网页2023年10月19日 · Igneous rocks form when magma (molten rock) cools and crystallizes, either at volcanoes on the surface of the Earth or while the melted rock is still inside the crust.
What are igneous rocks? | U.S. Geological Survey - USGS.gov
网页Igneous rocks (from the Latin word for fire) form when hot, molten rock crystallizes and solidifies. The melt originates deep within the Earth near active plate boundaries or hot spots, then rises toward the surface.
Igneous Rocks | Pictures of Intrusive and Extrusive Rock Types
网页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.
Everything You Need to Know About Igneous Rocks - ThoughtCo
网页2019年10月16日 · Igneous rocks (derived from the Latin word for fire, ignis) can have very different mineral backgrounds, but they all share one thing in common: they formed by the cooling and crystallization of a melt.