What caused this peculiar configuration of geometrical shape in the desert , and how is it related to urban life in the United States ?
What you ’re seeing is a satellite opinion of a salt mine in Chile . Its products are being shipped by the ton to snowy cities across the U.S. , where roads will be de - ice with generous scoops of salt .
Over on Urban Omnibus , we hear about how salinity from Tarapacá , a region in Chile , attain New York City in the wintry wintertime :
The salt travels here via International Salt , the City ’s supplier , from the Tarapacá Salt Flats in Chile , immense deposit inside ancient ocean bed that now lie in in the driest desert in the world ( 50 times drier than Death Valley ) . Despite having materialise 8 - 10 million years ago during the Miocene epoch , the net ton of solidify geologic meter pile beneath the bridge will thaw away in a affair of hebdomad as they are spread atop hundreds of mile of wintry city streets . Before washing away with saltation rain , this thin coat of ancient saltiness will first encrust well-nigh every exterior surface of the metropolis – roads , sidewalks , motorcycle , cars , and horseshoe – with traces of rich time .
FromUrban Omnibus ; blot onMammoth
Geologysalt
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