where is the sierra madre mountains located in mexico
Sierra Madre Occidental The Sierra Madre Occidental is a major mountain range system of the North American Cordillera, that runs northwestâ€“southeast through Northwestern and Western Mexico, and along the Gulf of California. The Sierra Madre is part of the American Cordillera, a chain of mountain ranges (cordillera) that consists of an almost continuous sequence of mountain ranges that form the western "backbone" of North America, Central America, South America and Antarctica.
Geology of the Rocky Mountains The Rocky Mountains took shape during an intense period of plate tectonic activity that resulted in much of the rugged landscape of the western North America. The Laramide orogeny, about 80â€“55 million years ago, was the last of the three episodes and was responsible for raising the Rocky Mountains.[1] Subsequent erosion by glaciers has created the current form of the mountains.