Final answer:
Peneplain and Appalachian Mountains is a broad, gently sloping, eroded surface resulting from geological erosion. The Appalachian Mountains display distinct physiographic provinces due to variation in their topography and geology. As these mountains erode over time.
Step-by-step explanation:
The student is asking about a geographic feature that results from the erosion of a part of the Appalachian rocks. This is known as a peneplain. This term, first coined in the context of northern New Jersey geography, refers to a broad, gently sloping, eroded surface often found surrounding a mountain, in this case, the Appalachian Mountains.
These mountains have been significantly eroded down to rolling hills, rendering notable the divided physiographic provinces based on their topography and geology.The Appalachian Mountains can be further divided into the Valley and Ridge Province, Blue Ridge Province, Piedmont Province, and the Appalachian Plateau.
The Appalachian Plateau, for instance, is uplifted and largely undeformed, representing an analogous structure to the Colorado Plateau similar in age and lithology to those in the Valley and Ridge Province.In the process of erosion and the formation of the peneplain, the lithosphere reacts to the added weight of the mountains
during a continental collision by bending, thus forming a foreland basin. This could manifest as a shallow inland ocean, forming a geological structure similar to Baffin Bay in northern Canada, as a result of weight exerted on the lithosphere.
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