Definition of Extrusive. Meaning of Extrusive. Synonyms of Extrusive

Here you will find one or more explanations in English for the word Extrusive. Also in the bottom left of the page several parts of wikipedia pages related to the word Extrusive and, of course, Extrusive synonyms and on the right images related to the word Extrusive.

Definition of Extrusive

Extrusive
Extrusive Ex*tru"sive, a. [See Extrude.] (Geol.) Forced out at the surface; as, extrusive rocks; -- contrasted with intrusive.

Meaning of Extrusive from wikipedia

- Extrusive rock refers to the mode of igneous volcanic rock formation in which hot magma from inside the Earth flows out (extrudes) onto the surface as...
- occurs either below the surface as intrusive rocks or on the surface as extrusive rocks. Igneous rock may form with crystallization to form granular, crystalline...
- igneous rock type similar to granite Basalt – Magnesium- and iron-rich extrusive igneous rock ʻAʻā – Basaltic lava with a crumpled appearance Pāhoehoe...
- /ˈbæsɔːlt, -əlt/; US: /bəˈsɔːlt, ˈbeɪsɔːlt/) is an aphanitic (fine-grained) extrusive igneous rock formed from the rapid cooling of low-viscosity lava rich...
- ****emblage is predominantly quartz, sanidine, and plagioclase. It is the extrusive equivalent to granite. Magma with the composition of rhyolite is extremely...
- or trap, is any dark-colored, fine-grained, non-granitic intrusive or extrusive igneous rock. Types of trap rock include basalt, peridotite, diabase,...
- A cinder is a pyroclastic material. Cinders are extrusive igneous rocks; they are fragments of solidified lava. Cinders are typically brown, black, or...
- crust by weight. Feldspars crystallize from magma as both intrusive and extrusive igneous rocks and are also present in many types of metamorphic rock....
- Trachyte (/ˈtreɪkaɪt, ˈtrækaɪt/) is an extrusive igneous rock composed mostly of alkali feldspar. It is usually light-colored and aphanitic (fine-grained)...
- within the crust of the planet. In contrast, an extrusion consists of extrusive rock, formed above the surface of the crust. Some geologists use the term...