The Geological Mystery Of The Appalachian Mountains

Automatic TRANSCRIPT

The stretch from Alabama to Newfoundland in a nearly straight line except for mysterious one hundred fifty mile area that crosses from Pennsylvania into New York state and this expanse, the mountains are for the east and the rest of the ridge creating Abend what could deform amount ridge to such an extent researchers from the college of New Jersey and the university of Rochester have used hightech techniques to discover the answer. The legends were formed from the North American and African continental plates collided more than three hundred million years ago. The North American plate folded into many intricate wrinkles as it was pushed, westward, forming the ridges. We see today apparently something massive stopped the Westwood movement and the location of the bend. But what the research team used gravity measurements to find the answer. Most people assume that gravity is a same. The globe, but in gravity, measured refined it changes from place to place. That's because the density and thickness of earth. Rock layers is not the same everywhere. Certain parts of the earth are denser than others causing the gravitational pull to be slightly greater in those places using the North American gravity database, the scientists examined the gravitational, pull around the mysterious bend the denser and heart of the rock. The higher the gravity, what they found was a giant underground bog of dense volcanic rock at the location of the bed. The dense of all Cannock rock created a barricade, forcing the Appalachians and do their unusual bend, and this case, the Eurosystem force truly met the movable object. This moment of science comes from Indiana University. I'm Don glass.

Coming up next