subsolvus granite An igneous rock of granitic composition characterized by the presence of two types of alkali feldspar: a potassium-rich type displaying perthitic (see PERTHITE) texture; and a sodium-rich type displaying antiperthitic texture. Subsolvus granites have a high water content, which depresses their liquidii sufficiently to intersect the subsolidus solvus surface and cause two extremes of feldspar composition to crystallize from the melt, instead of one intermediate-composition feldspar as in hypersolvus granites.
More From encyclopedia.com
Syenite , syenite A saturated, coarse-grained, igneous rock consisting of essential alkali feldspar and ferromagnesian minerals (biotite, hornblende, arfvedson… Composite Materials , A composite material (or just composite) is a mixture of two or more materials with properties superior to the materials of which it is made. Many co… Monotype , Monotype •gripe, hype, mistype, pipe, ripe, sipe, slype, snipe, stripe, swipe, tripe, type, wipe •guttersnipe • bagpipe • standpipe •tailpipe • drain… Gilbert-type Delta , Skip to main content Gilbert-type delta Type Specimen , Skip to main content type specimen Volcanoes , A volcanic eruption is the release of molten rock and volcanic gases through Earth's crust to the surface. Molten rock within the earth, or magma , i…
About this article
Updated About encyclopedia.com content Print Article
You Might Also Like