Are Sedimentary Rocks Felsic?
Extrusive Rocks Can Be Felsic, Like Rhyolite, or Mafic, Like Basalt. .. . Mudstone, and Siltstone Are Fine-Grained Sedimentary Rock That Are Primarily Composed...
Extrusive rocks can be felsic, like rhyolite, or mafic, like basalt. ... mudstone, and siltstone are fine-grained sedimentary rock that are primarily composed of clay minerals, quartz, and calcite. They are typically formed in low-velocity marine environments, such as deltas or floodplains.
What type of rocks are felsic?
Felsic rocks include dacite, rhyolite, their intrusive equivalents of granodiorite and granite, and a variety of less common rock types with higher or lower contents of Na and K.
What type of rock is mafic?
Mafic rocks include basalt, its intrusive equivalent of gabbro, and a variety of less common rock types with higher or lower contents of Na and K. Andesite and its intrusive equivalent, diorite, with slightly higher silica content, are intermediate between mafic and felsic.
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