Regional Variations
It is important to separate local from large-scale tectonic history of the orogenic belt in order to understand the orogeny. For this purpose, the Grenville orogen is generally broken into four localities: the southern extent in Texas and Mexico, the Appalachians, the Adirondacks and the well-studied Grenville Province of Canada. A portion of the orogen can be found in Scotland, but due to Scotland’s proximity to the Grenville province prior to opening of the Iapetus Ocean (modern day Atlantic Ocean), the two share largely the same history.
Read more about this topic: Grenville Orogeny
Famous quotes containing the word variations:
“I may be able to spot arrowheads on the desert but a refrigerator is a jungle in which I am easily lost. My wife, however, will unerringly point out that the cheese or the leftover roast is hiding right in front of my eyes. Hundreds of such experiences convince me that men and women often inhabit quite different visual worlds. These are differences which cannot be attributed to variations in visual acuity. Man and women simply have learned to use their eyes in very different ways.”
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