The Grand Canyon of Arizona illustrates the stratigraphic principles. … The rock layers exhibit the principle of lateral continuity, as they are found on both sides of the Grand Canyon which has been carved by the Colorado River.Jun 8, 2020
principle of original horizontality The Grand Canyon region lies in Colorado Plateau, which is characterized by horizontal or nearly horizontal strata, which follows the principle of original horizontality. These rock strata have been barely disturbed from their original deposition, except by a broad regional uplift.
It's a good example of lateral continuity. You can clearly see the same rock layers on opposite sides of the canyon. The matching rock layers were deposited at the same time, so they are the same age. … Layers of the same rock type are found across canyons at the Grand Canyon.
Grand Canyon Supergroup Rocks which use the natural remnant magnetization in Earth materials, to further define the time span. The Supergroup rocks predate the Cambrian Period, when hard-shelled organisms first appeared in the fossil record, so they have few identifiable index fossils.
Geology in the Grand Canyon attracts the attention of the world for many reasons, but perhaps its greatest significance lies in the geologic record preserved and exposed here. The rocks at Grand Canyon are not inherently unique. Similar rocks are found throughout the world.
The principles on which the stratigraphic studies are based include order of superposition, original horizontality, lateral continuity, cross-cutting relationships, inclusions, unconformities, fossil succession, uniformitarianism and catastrophism.
stratigraphy, scientific discipline concerned with the description of rock successions and their interpretation in terms of a general time scale. It provides a basis for historical geology, and its principles and methods have found application in such fields as petroleum geology and archaeology.
The Grand Canyon (Figure below) is a good example of lateral continuity. You can clearly see the same rock layers on opposite sides of the canyon. The matching rock layers were deposited at the same time, so they are the same age.
The Grand Canyon The many horizontal layers of sedimentary rock illustrate the principle of original horizontality (Figure below). The youngest rock layers are at the top and the oldest are at the bottom, which is described by the law of superposition.