illustrace an outcrop of rock layer applying the law of stratigraphy?
Answers
Answer:
Law of superposition, a major principle of stratigraphy stating that within a sequence of layers of sedimentary rock, the oldest layer is at the base and that the layers are progressively younger with ascending order in the sequence. On occasion, however, deformation may have caused the rocks of the crust to tilt, perhaps to the point of overturning them. Moreover, if erosion has blurred the record by removing substantial portions of the deformed sedimentary rock, it may not be at all clear which edge of a given layer is the original top and which is the original bottom. The law of superposition was formulated by Danish geologist Nicolaus Steno and outlined in his book De Solido Intra Naturaliter Contento Dissertationis Prodomus (1669; The Prodromus of Nicolaus Steno’s Dissertation Concerning a Solid Body Enclosed by Process of Nature Within a Solid). It is one of the great general principles of geology.
Explanation:
hope it helps you Mark me as the BRAINLIEST
Answer: a mass of rock that stands above the surface of the ground is known as outcrop.
Stratigraphy is the branch of Geology which deals with the history of the rocks of the Earth’s crust with special emphasis on their approximate time of formation and the changes they have undergone since their formation.
Explanation:An important principle in the application of stratigraphy to archaeology is the law of superposition—the principle that in any undisturbed deposit the oldest layers are normally located at the lowest level. Accordingly, it is presumed that the remains of each succeeding generation are left on the debris of the last.
✓ outcrop of rock layer applying the law of stratigraphy:- When weathering and erosion expose part of a rock layer or formation, an outcrop appears. An outcrop is the exposed rock, so named because the exposed rock "crops out." Outcrops provide opportunities for field geologists to sample the local geology—photograph it, hold, touch, climb, hammer, map, sniff, lick, chew, and carry it home. Classes often visit outcrops to see illustrations of the principles of geology that were introduced in lecture. We often can see geologists or students identifying rocks in roadcuts, outcrops along the road where highway construction exposed the rocks.
Mountainous regions, where any loosened Earth material swiftly washes away, contain some of the best outcrops because a greater percentage of the rock formation lies exposed. Rocks crop out especially well across steep slopes, above the tree line (elevation above which trees cannot grow), and on land scraped free of soil by bulldozer-like glaciers. Sediment collects and plants grow in flatter areas, obscuring the rocks. In some areas soil and sediment may completely cover all the underlying rock, such as in the southeastern United States. However, in the desert southwest, the opposite is often the case. Outcrops cut the cost of mapping for geologists. The greater expense of geologic mapping in an outcrop-free area results from high-priced drilling to sample the rocks hidden below the surface.