Q. With reference to the Piedmont Plateau of the United States, consider the following statements:
1.It is situated as a transitional plateau region bounded between the Atlantic Coastal Plain to the east and the main Appalachian Mountains to the west.
2.The eastern boundary of this plateau is marked by a prominent geomorphic feature known as the ‘Fall Line’, where rivers drop rapidly into the coastal plain.
3.The province is composed of young, undisturbed, non-foliated sedimentary rocks of the Holocene era.
Which of the statements given above are correct?
Answer: A
Notes:
Detailed Explanation:
- Statement 1 is correct: The Piedmont is a plateau province in the Eastern US that forms a transitional zone between the low Atlantic Coastal Plain and the higher Appalachian ridges further inland.
- Statement 2 is correct: The eastern edge of the Piedmont meets the coastal plain at the Fall Line. Here, rivers flowing off the hard bedrock of the plateau drop down via waterfalls and rapids onto the softer sediments of the plain, historically marking the limit of river navigation.
- Statement 3 is incorrect: The Piedmont is a highly complex geological zone made up of ancient, heavily deformed Precambrian and Paleozoic metamorphic and igneous rocks (such as schists, gneisses, and granites), not young Holocene sedimentary deposits.
