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Greenstone belts are zones of variably ... understanding the nature and origin of greenstone belts is the most fruitful way of studying Archaean geological history.
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)
The Barberton Greenstone Belt is located on the Kaapvaal craton, which covers much of the southeastern part of Africa, and was formed by the emplacement of granitoid batholiths. [7] The Kaapvaal craton was once part of a supercontinent geologists term Vaalbara that also included the Pilbara craton of western Australia. [ 7 ]
Mount William lies within one of six Cambrian greenstone belts in Victoria where several other greenstone quarries have also been found including Mount Camel, Howqua River, Cosgrove, Jallukar, Berrambool and Baronga on the Hopkins River; and Ceres and Dog Rocks near Geelong. [5]
The Barberton greenstone belt (BGB) is located in the Kapvaal craton of southeastern Africa. It characterizes one of the most well-preserved and oldest pieces of continental crust today by containing rocks in the Barberton Granite Greenstone Terrain (3.55–3.22 Ga).
The Abitibi greenstone belt is a 2,800-to-2,600-million-year-old greenstone belt that spans across the Ontario–Quebec border in Canada. [1] It is mostly made of volcanic rocks , but also includes ultramafic rocks , mafic intrusions , granitoid rocks , and early and middle Precambrian sediments.
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 ...
The Barberton Greenstone Belt records impact events in 8 layers containing spherules (tiny spheres which form from condensed vapour created by the impact) dubbed S1 through S8, spanning from about 3.5 to 3.2 billion years ago, [3] which likely represent at least 4 but perhaps as many as 8 or more impact events. [4]