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The Barberton Greenstone belt was first uniquely identified by Prof Annhauser at the University of the Witwatersrand, Johannesburg. His work in mapping and detailing the characteristics of the Barberton Greenstone belt has been used as a primer for other greenstone belts around the world.
The Isua Greenstone Belt is an Archean greenstone belt in southwestern Greenland, aged between 3.7 and 3.8 billion years. [2] The belt contains variably metamorphosed mafic volcanic and sedimentary rocks , and is the largest exposure of Eoarchaean supracrustal rocks on Earth. [ 3 ]
Abitibi greenstone belt (Quebec/Ontario) Bird River greenstone belt (Manitoba) Ecstall Greenstone Belt (British Columbia) Ennadai greenstone belt (Saskatchewan) Flin Flon greenstone belt (Manitoba/Saskatchewan) Hope Bay greenstone belt (Nunavut) Hunt River greenstone belt (Newfoundland and Labrador) Nuvvuagittuq Greenstone Belt (Quebec)
Eoarchean geology is the study of the oldest preserved crustal fragments of Earth during the Eoarchean era from 4.031 to 3.6 billion years ago. Major well-preserved rock units dated to this era are known from three localities, the Isua Greenstone Belt in Southwest Greenland, the Acasta Gneiss in the Slave Craton in Canada, and the Nuvvuagittuq Greenstone Belt in the eastern coast of Hudson Bay ...
Also called "vertical tectonics" because structures move vertically due to gravity-driven instabilities. The deformation that occurs within the greenstone belts represents a dome-and-keel structure or the rise of diapiric plutons. This model provides an explanation for the dome-and-keel structure associated with greenstone belts.
Shields can be very complex: they consist of vast areas of granitic or granodioritic gneisses, usually of tonalitic composition, and they also contain belts of sedimentary rocks, often surrounded by low-grade volcano-sedimentary sequences, or greenstone belts. These rocks are frequently metamorphosed greenschist, amphibolite, and granulite facies.
The belt is a part of the larger Limpopo Mobile Belt and is enclosed by Archean granite-greenstone terranes. The flood basalt sequence into which it flows has a very complex structure, showing evidence of multiple phases of deformation, many times stronger than the forces experienced by typical volcanic and sedimentary rocks; intrusion is also ...
The Temagami Greenstone Belt (TGB) is a small 2.7 billion year old greenstone belt in the Temagami region of Northeastern Ontario, Canada.It represents a feature of the Superior craton, an ancient and stable part of the Earth's lithosphere that forms the core of the North American continent and Canadian Shield.