fractional magma
31Gabbro — (pronEng|ˈɡæbrəʊ) is a dark, coarse grained, intrusive igneous rock chemically equivalent to basalt. It is a plutonic rock, formed when molten magma is trapped beneath the Earth s surface and cools into a crystalline mass. The vast majority of… …
32Exponentiation — Exponent redirects here. For other uses, see Exponent (disambiguation). Exponentiation is a mathematical operation, written as an, involving two numbers, the base a and the exponent (or power) n. When n is a positive integer, exponentiation… …
33Magnetite — Not to be confused with Magnesite or Maghemite. Magnetite Magnetite and pyrite from Piedmont Italy …
34Incompatible element — is a term used in petrology and geochemistry. During the fractional crystallization of magma, and magma generation by the partial melting of the Earth s mantle and crust, elements that have difficulty in entering cation sites of the minerals are… …
35Moon rock — Olivine basalt collected by Apollo 15. Moon rock describes rock that formed on the Earth s moon. The term is also loosely applied to other lunar materials collected during the course of human exploration of the Moon. The rocks collect …
36Internal structure of the Moon — The Moon is a differentiated body, being composed of a geochemically distinct crust, mantle, and core. This structure is believed to have resulted from the fractional crystallization of a magma ocean shortly after its formation about 4.5 billion… …
37Krossanesfjall — Eystrahorn Höhe 716 m Lage …
38List of abstract algebra topics — Abstract algebra is the subject area of mathematics that studies algebraic structures, such as groups, rings, fields, modules, vector spaces, and algebras. The phrase abstract algebra was coined at the turn of the 20th century to distinguish this …
39Granophyre — ( point, perhaps in the presence of a water rich phase.Granophyres typically are intrusive rocks that crystallized at shallow depths, and many have compositions similar to those of granites. A common occurrence of granophyre is within layered… …
40Samarium-neodymium dating — is useful for determining the age relationships of rocks and meteorites, based on decay of a long lived Sm isotope to a radiogenic Nd isotope. Nd isotope ratios are used to provide information on the source of igneous melts as well as to provide… …
