A new theory that dramatically changes our world view is rare. Of course, such names as Copernicus, Newton, Darwin, and Einstein come to mind because their theories did just that. But, as the old tag line goes, "What have you done for me lately?" Well, one thing comes to mind, though youngsters may not think it recent. In the 1960s, a whole bunch of problems were cleared up with a new theory: plate tectonics. That is, that the surface of the earth consists of vast plates that move in relation to each other.
A theory is an explanation of important phenomena and promises to lead
to further important insights. Plate tectonics did just that. Not only was it an
explanation for mid-oceanic ridges and similarities in geology on opposite sides of
oceans, but it also explained deep sea trenches and the formation of mountain ranges,
among many other phenomena. And from a local viewpoint, it explains our Rio Grande Rift
Valley is the result of the ripping apart of the tectonic plate on which we
reside.
Contributor: Arthur H. Harris, Laboratory for Environmental Biology, Centennial Museum, University of Texas at El Paso.
Desert Diary is a joint production of the Centennial Museum and KTEP National Public Radio at the University of Texas at El Paso.