Harzburgite & Partial melting - Unionpedia, the concept map

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Difference between Harzburgite and Partial melting

Harzburgite vs. Partial melting

Harzburgite, an ultramafic, igneous rock, is a variety of peridotite consisting mostly of the two minerals olivine and low-calcium (Ca) pyroxene (enstatite); it is named for occurrences in the Harz Mountains of Germany. Partial melting is the phenomenon that occurs when a rock is subjected to temperatures high enough to cause certain minerals to melt, but not all of them.

Basalt

Basalt is an aphanitic (fine-grained) extrusive igneous rock formed from the rapid cooling of low-viscosity lava rich in magnesium and iron (mafic lava) exposed at or very near the surface of a rocky planet or moon.

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Continental crust

Continental crust is the layer of igneous, metamorphic, and sedimentary rocks that forms the geological continents and the areas of shallow seabed close to their shores, known as continental shelves.

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Igneous rock

Igneous rock, or magmatic rock, is one of the three main rock types, the others being sedimentary and metamorphic.

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Kimberlite

Kimberlite, an igneous rock and a rare variant of peridotite, is most commonly known to be the main host matrix for diamonds.

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Lithosphere

A lithosphere is the rigid, outermost rocky shell of a terrestrial planet or natural satellite.

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Mafic

A mafic mineral or rock is a silicate mineral or igneous rock rich in magnesium and iron.

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Magma chamber

A magma chamber is a large pool of liquid rock beneath the surface of the Earth.

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Mantle (geology)

A mantle is a layer inside a planetary body bounded below by a core and above by a crust.

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Mineral

In geology and mineralogy, a mineral or mineral species is, broadly speaking, a solid substance with a fairly well-defined chemical composition and a specific crystal structure that occurs naturally in pure form.

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Oceanic crust

Oceanic crust is the uppermost layer of the oceanic portion of the tectonic plates.

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Peridotite

Peridotite is a dense, coarse-grained igneous rock consisting mostly of the silicate minerals olivine and pyroxene.

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Plate tectonics

Plate tectonics is the scientific theory that Earth's lithosphere comprises a number of large tectonic plates, which have been slowly moving since 3–4 billion years ago.

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Ultramafic rock

Ultramafic rocks (also referred to as ultrabasic rocks, although the terms are not wholly equivalent) are igneous and meta-igneous rocks with a very low silica content (less than 45%), generally >18% MgO, high FeO, low potassium, and are composed of usually greater than 90% mafic minerals (dark colored, high magnesium and iron content).

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