WebBecause if its relatively high viscosity, felsic magma is resistant to flow and tends to plug volcanic vents, causing a buildup of pressure that may release violently. This resistance to … Felsic magma or lava is higher in viscosity than mafic magma/lava. Felsic rocks are usually light in color and have specific gravities less than 3. The most common felsic rock is granite. Common felsic minerals include quartz, muscovite, orthoclase, and the sodium-rich plagioclase feldspars ( albite -rich). See more In geology, felsic is a modifier describing igneous rocks that are relatively rich in elements that form feldspar and quartz. It is contrasted with mafic rocks, which are relatively richer in magnesium and iron. Felsic refers to See more In modern usage, the term acid rock, although sometimes used as a synonym, normally now refers specifically to a high-silica-content (greater than 63% SiO2 by weight) See more • QAPF diagram • List of minerals • List of rock types • Bowen's reaction series • Archean felsic volcanic rocks See more In order for a rock to be classified as felsic, it generally needs to contain more than 75% felsic minerals (namely quartz, orthoclase and plagioclase). Rocks with greater than 90% … See more
Mafic Vs. Felsic Rocks: Know the Difference - Science Struck
WebFelsic magma has a high viscosity, which will tend to stick in and clog volcanic conduits. Compared to felsic lavas, mafic lavas have a ________ lower viscosity What properties of … WebAug 31, 2014 · Felsic lava (silica-rich; example: rhyolite) has high viscosity (think silly putty), and leads to explosive eruptions, where bursting gas bubbles fragment lava and eject it (and other materials). Since felsic lava … camping bouche du-rhône bord de mer
Lava Viscosity - Universe Today
WebThe viscosity of a substance is a measure of its consistency. Viscosity is defined as the ability of a substance to resist flow. In a sense, viscosity is the inverse of fluidity. Cold … http://sci.sdsu.edu/how_volcanoes_work/Controls.html WebNov 21, 2024 · In comparison the felsic magma tends to create some of the most dangerous explosive pyroclastic flows, due to the high viscosity and gas content of the magma. Due to the higher viscosity (and cooler temperatures?) the flows do not travel as far before they cool, creating steeper sloped volcanoes. first watch in hendersonville tn