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magma    音标拼音: [m'ægmə]
n. 岩浆,糊剂,糊

岩浆,糊剂,糊

magma
n 1: molten rock in the earth's crust

Magma \Mag"ma\, n. [L., fr. Gr. ?, fr. ? to squeeze, knead.]
1. Any crude mixture of mineral or organic matters in the
state of a thin paste. --Ure.
[1913 Webster]

2. (Med.)
(a) A thick residuum obtained from certain substances
after the fluid parts are expressed from them; the
grounds which remain after treating a substance with
any menstruum, as water or alcohol.
(b) A salve or confection of thick consistency.
--Dunglison.
[1913 Webster]

3. (Geol.)
(a) The molten matter within the earth, the source of the
material of lava flows, dikes of eruptive rocks, etc.
(b) The glassy base of an eruptive rock.
[1913 Webster]

4. (Chem.) The amorphous or homogenous matrix or ground mass,
as distinguished from well-defined crystals; as, the magma
of porphyry.
[1913 Webster] Magna Carta

A program used for heavy duty
algebraic computation in many branches of mathematics. Magma,
developed by John Cannon and associates at the University of
Sydney, succeeded {Cayley}. It runs at several hundred sites.

E-mail: .

{(http://maths.usyd.edu.au:8000/u/magma/)}.

[W. Bosma, J. Cannon and C. Playoust, The Magma algebra system
I: The user language, J. Symb. Comp., 24, 3/4, 1997, 235-265].

(2000-12-21)

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  • Draw, Collaborate Create with Artists Around the World | Magma
    Create on a shared canvas, in real time Magma is a drawing platform for artists and teams who want to sketch, collaborate, and grow together
  • Magma - Wikipedia
    Magma that cools slowly within a magma chamber usually ends up forming bodies of plutonic rocks such as gabbro, diorite and granite, depending upon the composition of the magma
  • Magma | Components, Types, Facts | Britannica
    magma, molten or partially molten rock from which igneous rocks form It usually consists of silicate liquid, although carbonate and sulfide melts occur as well Magma migrates either at depth or to Earth’s surface and is ejected as lava
  • Magma - National Geographic Society
    Magma is extremely hot liquid and semi-liquid rock located under Earth’s surface When magma flows onto Earth’s surface, it is called lava
  • 6. 2 Making Magma: How to Melt Rocks - pressbooks. cuny. edu
    For volcanism to occur, magma —molten rock under Earth’s surface—must first be created This section focuses on the three different ways rocks in the interior of Earth can be melted
  • Magma - an overview | ScienceDirect Topics
    Magma is defined as a composite fluid material that consists of solid minerals, gas bubbles, and a silicate melt matrix, formed by partial melting within the Earth Its composition varies and is primarily derived from the mantle or crust, resulting in different types such as basalts and granites
  • Magma - New World Encyclopedia
    Magma is molten rock located beneath the surface of the Earth This complex, high-temperature fluid often collects in a magma chamber [1] and may contain suspended crystals and gas bubbles Upon cooling, it solidifies to form igneous rock
  • 8. 1: Magma and How It Forms - Geosciences LibreTexts
    Igneous rocks form when melted rock cools, and melted rock originates within Earth as magma Magma compositions vary, but will have eight main elements in different proportions The most abundant elements are oxygen and silicon, followed by aluminum, iron, calcium, sodium, magnesium, and potassium
  • 4. 2 Magma Composition and Eruption Style – Physical Geology
    4 2 Magma Composition and Eruption Style As noted in the previous section, the types of magma produced in the various volcanic settings can differ significantly At divergent boundaries and oceanic mantle plumes, where there is little interaction with crustal materials and magma fractionation to create felsic melts does not take place, the magma tends to be consistently mafic At subduction
  • Magma – an overview | components, properties and origin
    Magma is naturally occurring molten or semi-molten rock material, generated within the Earth from which igneous rocks are derived through solidification and related processes Magma is found beneath the surface of the Earth





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