of other older cumulates of different composition and colour, typically giving the cumulate rock a layered or banded appearance. Cumulate rocks are the...

Igneous rock (igneous from Latin igneus 'fiery'), or magmatic rock, is one of the three main rock types, the others being sedimentary and metamorphic...

ultrabasic rock – A type of pyroxenite, composed of clinoproxene and orthopyroxene Wehrlite – Ultramafic rock - An ultramafic plutonic or cumulate rock, a type...

of wehrlite, olivine pyroxenite, harzburgite, and even chromitite (a cumulate rock consisting largely of chromite). Small layered intrusions may be of...

layered ultramafic intrusions where differentiated rock types often occur in layers. Such cumulate rock types do not represent the chemistry of the magma...

plutonic igneous rock composed primarily of hornblende amphibole is called a hornblendite, which is usually a crystal cumulate rock. Igneous rocks with...

proposed Flagship-class Mars sample return (MSR) mission to collect Martian rock and soil samples in 43 small, cylindrical, pencil-sized, titanium tubes and...

contradicted by zircon data, which suggests leucosomes are a residue (a cumulate rock) left by extraction of a primary magma. When it is impossible to find...

crystallization is important in the formation of sedimentary evaporite rocks. Cumulate rock – Igneous rocks formed by the accumulation of crystals from a magma...

mineralisation – Fe-Ni-Cu-PGE ore deposit Ultramafic rock – Type of igneous and meta-igneous rock Cumulate rock – Igneous rocks formed by the accumulation of...

are known as cumulate rocks, and those parts are the first which crystallize out of the magma. Identifying whether a rock is a cumulate or not is crucial...

in the name of the SNC group of meteorites. Chassigny is an olivine cumulate rock (dunite). It consists almost entirely of olivine with intercumulus pyroxene...

Chromitite is an igneous cumulate rock composed mostly of the mineral chromite. It is found in layered intrusions such as the Bushveld Igneous Complex...

The vast Bushveld Igneous Complex of South Africa includes cumulate layers of the rare rock type, chromitite, composed of 90% chromite, Plutonism – Geological...

doubtful value because a cumulate rock does not represent the melt from which it was extracted. However, if the groundmass of a cumulate can be analysed, it...

During cooling, crystals will form from the melt. Thus, the crystal/melt ratio increases, generating a magma, a crystal-mush, and finally a cumulate rock....

hyaloclastite, sheeted dykes, gabbro, plagiogranite and ultramafic cumulate rock. Mantle rocks exposed in the ophiolite are the peridotite varieties...

in the highlands, and is inferred to represent plagioclase flotation cumulates of the lunar magma ocean, with interstitial mafic phases formed from trapped...

occur with crystal accumulation, forming pseudo-sedimentary structures. Cumulate rock Igneous differentiation Morris, Christopher Gilbert (1992), Academic...

Cross-bedding Cross-stratification; also trough-cross stratification. Cumulate; see also layered intrusion Decussate Devitirification; devitrified Dendritic...

Geologists have described it as a coarse-grained olivine-plagioclase cumulate with a granular polygonal texture. Olivine and plagioclase are of about...

layers of 4 Vesta's crust, and are a transition group towards the cumulate eucrites. Cumulate eucrites are rare types with oriented crystals, thought to have...

rotation in the groundmass. Igneous rocks can become foliated by alignment of cumulate crystals during convection in large magma chambers, especially ultramafic...

crust and erupts on the surface. The erupted materials consist of molten rock (lava), hot fragmental debris (tephra or ash), and gases. Volcanism is a...

these phenocrysts usually settle out of solution, eventually creating cumulates; however if the partially crystallized magma is then erupted to the surface...

slowly cools and crystallizes over time. Petrology Igneous petrology Cumulate rock "Department of Earth Sciences » Experimental Petrology". Nandedkar,...

cumulated on record labels such as Cuneiform (United States), Recommended (later ReR Megacorp, England) and Rec Rec (Switzerland). Experimental rock Magma...

remaining melt, they usually settle out of solution, eventually creating cumulates. However, when this is interrupted by sudden eruption of the melt as lava...

is interpreted as depleted mantle rock, from which basaltic magma has been extracted. It also forms as a cumulate in Type I layered intrusions, forming...

the lower oceanic crust, composed of troctolite, gabbro and ultramafic cumulates. The crust overlies the rigid uppermost layer of the mantle. The crust...