Precambrian greenstone belt (rock formation) in Canada
The clouds with small droplets in the left image, indicated by yellow, were seeded by the aerosols from the copper smelter in Flin Flon. Pollution is particularly noticeable from satellites in areas where the air is otherwise clean.
The Flin Flon greenstone belt, also referred to as the Flin Flon – Snow Lake greenstone belt, is a Precambrian greenstone belt located in the central area of Manitoba and east-central Saskatchewan, Canada (near Flin Flon). It lies in the central portion of the Trans-Hudson orogeny and was formed by arc volcanism during the Paleoproterozoic period.[1] The Flin Flon – Snow Lake greenstone belt is 250 km long by 75 km wide and is exposed just north of McClarty Lake. The belt is bounded by metasedimentary gneisses and metavolcanics of the Kisseynew Domain to the north and extends to the south where it is unconformably overlain by Ordovician age dolomite.
^Stern, Richard A.; Syme, Eric C.; Bailes, Alan H.; Stephen B. Lucas (1995). "Paleoproterozoic (1.90 1.86 Ga) arc volcanism in the Flin Flon Belt, Trans-Hudson Orogen, Canada". Contributions to Mineralogy and Petrology. 119 (2/3): 117–141. Bibcode:1995CoMP..119..117S. doi:10.1007/BF00307276.
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and vein packages occur within mafic volcanic sequences such as the greenstonebelts of the Canadian Shield. The metasedimentary association. There are...
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