09/24/2022
Basalt is volcanic igneous rock solid black. Contains less than 52% of silica (SiO2). Because of the low content of basalt, silica rocks viscosity (resistance to flow) are low. So the basaltic lava can flow quickly and easily move. Low viscosity allows volcanic gases exit without generating huge explosions. But basaltic lava fountains and explosions still cracks form explosive fountains hundreds of meters in length. Among common minerals in basalt: (Olivine), and (Pyroxene), and (Plagioclase). Basalt explodes in temperatures between 1100 to 1250 ° Celsius.
Basaltic rocks Almhlih consists of a set of elements and oxides most important of which eight are:
Oxide silicon SiO2, and aluminum oxide Al2O3, and iron oxide triple Fe2O3 and iron oxide bilateral FeO oxide magnesium MgO oxide Calcium CaO and sodium oxide Na2O and potassium oxide K2O addition to oxides other small amounts, and these oxides and compositions chemical constituent of the rocks, the Alawgat is a key element in the formation of basalt followed in important Albulagjuklas and olefins Alnevelin, Albroonzi and Alawrtoclas.
