When southern Arizonans travel during the warmer months of the year, they get looks of sympathy when they reveal their homeplace. “Isn’t it hot down there?” “Isn’t it hard to live without seasons?” But Sonoran Desert dwellers know they have one up on the questioners, with two distinct seasons during what the rest of the […]
Mary Moran
Posted inJune 25, 1984: Geology of the West
The West was formed by clashing crustal plates
Today’s Rocky Mountains are relatively recent, having sprung up 100 to 50 million years ago by dint of clashing crustal plates. Download entire issue to view this article: http://country-survey-collabs.info/issues/16.12/download-entire-issue%3C/p%3E