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Bookmark or Share- Basalt | Properties, Formation, Composition, Uses - Geology ScienceOne commonly used classification scheme is the TAS classification, which categorizes basaltic rocks into four main types: tholeiitic, alkali, transitional, and high-alumina basalts, based on their silica content and alkali (sodium and potassium) and aluminum oxide (Al2O3) contents.
- Basalt - WikipediaBasalts are important rocks within metamorphic regions because they can provide vital information on the conditions of metamorphism that have affected the region. [123] Metamorphosed basalts are important hosts for a variety of hydrothermal ores, including deposits of gold, copper and volcanogenic massive sulfides. [124]
- Basalt | Definition, Properties, & Facts | BritannicaBasalt, extrusive igneous (volcanic) rock that is low in silica content, dark in color, and comparatively rich in iron and magnesium. Basalts may be broadly classified on a chemical and petrographic basis into two main groups: the tholeiitic and the alkali basalts. Learn more about basalt in this article.
- Basalt: Igneous Rock - Pictures, Definition, Uses & More - Geology.comBasalts at Oceanic Divergent Boundaries. Most of Earth's basalt is produced at divergent plate boundaries on the mid-ocean ridge system (see map). Here convection currents deliver hot rock from deep in the mantle. This hot rock melts as the divergent boundary pulls apart, and the molten rock erupts onto the sea floor.
- Basalt | Properties, Formation, Composition, Uses - Geology HubUses: Flood basalts are used in construction and as a source of geological information about mantle processes and the history of volcanic activity. They also have implications for understanding mass extinction events linked to large volcanic eruptions.
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