Greenstone belt
Greenstone belt This article is about zones of ... zinc and lead. For other meanings, see Greenstone (disambiguation). Greenstone belts are so called because of the green ... by the chlorite minerals within the rocks. Greenstone belts are mainly found in Australia, ...
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Greenstone (disambiguation)
Greenstone (disambiguation) Greenstone is a name given to several different types of mineral. Greenstone is a form of green nephrite jade found in New Zealand and Australia. Greenstone belts are mixed sedimentary and volcanic rock ...
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Yilgarn craton
... sedimentary basins and Proterozoic fold and thrust belts. It is composed primarily of approximately 2 ... year old (2.8 Ga) granites and greenstone belts. Some greenstone belts and granites are as old as ...
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Komatiite
... high-magnesium mafic volcanic rocks in Archaean greenstone belts. Komatiites are restricted to the Archaean, with ... the two rock types in the Karelian greenstone belt of northwest Russia. Mineralogy Komatiites are ... Komatiite–Tholeiite Rock Association in the Vedlozero–Segozero Archean Greenstone Belt, Central Karelia, Geochemistry International, Vol. 39 ...
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Basalt
... usually only found in fold and thrust belts, and are often heavily metamorphosed. These are known as greenstone belts. Jade or nephrite is a gem mineral ... basalts Basalts are important rocks within metamorphic belts, as their can provide vital information on ...
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Greenschist
... An alternate term for these rocks is greenstone. Petrology Geenschist, as a rock type, is ... ridges typically exhibit sub-greenschist alteration. The greenstone belts of the various archean cratons are commonly ...
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Pyroxenite
... tubes and thick flows in the Archaean greenstone belts. Here, the pyroxenite lavas are created by ... pyroxene. A type locaility is the Gullewa Greenstone Belt, in the Murchison region of Western ...
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Pounamu
Pounamu Pounamu is the Maori word for greenstone (not to be confused with greenstone belts). It is also a research tool under ...
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List of rocks
... Geode Gneiss Granodiorite Granophyre Granulite Greywacke Greenschist Greenstone Greenstone belts H Harzburgite (variety of peridotite). Hornblendite Hornfels ...
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Ultramafic to mafic layered intrusions
... period. For instance, in most Archaean cratons, greenstone belts correlate with voluminous dyke injection as well ...
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