Three basic types of magma: 1  Mafic or Basaltic-- SiO2 45-55 wt%, high in Fe, Mg, Ca, low in K, Na. 2  Intermediate or Andesitic-- SiO2 55-65 wt%, intermediate. in Fe, Mg, Ca, Na, K. 3  Felsic or Rhyolitic-- SiO2 65-75%, low in Fe, Mg, Ca, high in K, Na.
intensity noun [U]. âº the âquality of being âextreme in âstrength or âforce: Simone âsings with âemotional intensity. The âlight âhit us with such intensity that we âducked. âº art Intensity in a âwork of âart âdescribes the âstrength of the âcolor, âsound, âlight, or âfeeling. (Definition of intensity from the Cambridge Academic Content Dictionary Â© Cambridge University Press).
A school of abstract painting and sculpture that emphasizes extreme simplification of form, as by the use of basic shapes and monochromatic palettes of primary colors, objectivity, and anonymity of style. Also called ABC art, minimal art, reductivism, rejective art.