GENERAL GEOLOGY

Detailed explanation-1: -The Grand Canyon, in the U.S. state of Arizona, is a product of tectonic uplift. It has been carved, over millions of years, as the Colorado River cuts down through the Colorado Plateau.

Detailed explanation-2: -The Canyon itself was carved by the Colorado River and the wind that caused the surface of the sedimentary rocks to become exposed and erode over time. The erosion of the Grand Canyon by winds, rains and the amazing strength of the Colorado River created the marvelous views and exposed magnificent caves.

Detailed explanation-3: -Simply put, the Great Lakes were created by glaciers. About 18, 000 years ago, the Laurentide glacier covered most of Canada and the Northern U.S.

Detailed explanation-4: -Sedimentary rocks form the middle and top layers of Grand Canyon. Layers of sediment hardened into sedimentary rocks over time. Most of the canyon’s igneous and metamorphic rocks make up the bottom layers of Grand Canyon, near the Colorado River. Igneous rocks formed when liquid magma cooled.

Detailed explanation-5: -The causes of continental drift are perfectly explained by the plate tectonic theory. The earth’s outer shell is composed of plates that move a little bit every year. Heat coming from the interior of the earth triggers this movement to occur through convection currents inside the mantle.