Uinta Mountains

Gerelateerde afbeelding

I asked him if he thought the Uinta Mountains could be explained in terms of plate theory. The Uintas are a range in the Rockies, seven hundred miles from the sea, and they run east-west, unlike virtually all other ranges for thousands of miles around them. If the Western cordilleras were raised by colliding plates, how did the Uintas happen to come up at right angles to the other mountains? He said, “You must have been talking to a Rocky Mountain geologist.” He said nothing else for a time, while he tapped at the earth I had uncovered and captured a perfect sample. Then he said, “The north side of the Uintas is a spectacular mountain wall. Glorious. You come upon it and suddenly you see structurally the boundary of the range. But you don’t see what put it there. The Uintas are mysterious. They are not a basin-range fault block, yet they have come up nearly vertically, with almost no compression evident. You just stand flexplek huren leeuwarden there and watch them go up into the sky. They don’t fit our idea of plate tectonics. The Rockies in general will be one of the last places in the world to be deciphered in terms of how many hits created them, and just when, and from where.” The article in Geology was based on a questionnaire that was circulated toward the end of the nineteen-seventies. The results indicated that forty per cent of geologists had come to feel that plate theory was “essentially established,” while a roughly equal number preferred to qualify a bit and say that it was “fairly well established.” Eleven per cent felt that the theory was “inadequately proven.” Seven per cent said they had accepted continental drift before i940. Six per cent thought plate tectonics would be “still in doubt” in the late nineteen-eighties. And one flexplek huren eindhoven geologist predicted that the theory would eventually be rejected. “At any given moment, no two geologists are going to have in their heads exactly the same levels of acceptance of all hypotheses and theories that are floating around,” Deffeyes said. “There are always many ideas in various stages of acceptance.

Geef een reactie

Het e-mailadres wordt niet gepubliceerd. Verplichte velden zijn gemarkeerd met *