Asked by Lovepreet Singh on May 19, 2024
Verified
Which of the following is a valid description of features within continental interiors?
A) The central region of a continent is called a shield and is a broad, basaltic volcano with gentle slopes.
B) The continental platform has nearly horizontal sedimentary rocks deposited on crystalline basement.
C) The oldest exposed rocks in a continent are usually along the coastline.
D) Broad domes and basins in continental interiors have nearly vertical beds around their flanks.
E) All of these.
Continental Platform
A broad region that surrounds the continental shield and typically exposes horizontal to gently dipping sedimentary rocks.
Crystalline Basement
The crystalline (metamorphic and igneous) rocks that underlie sedimentary and volcanic rocks in an area; widely exposed in the continental shield.
Broad Domes
Broad domes refer to large, rounded structures on the Earth's surface, often created by the slow uplift of the underlying strata.
- Recognize and delineate the geological characteristics found in the interiors of continents.
Verified Answer
TV
Th?nh V? V?nMay 21, 2024
Final Answer :
B
Explanation :
The continental platform, or continental shelf, is characterized by nearly horizontal sedimentary rocks that have been deposited on top of older, crystalline basement rocks. This description accurately reflects the geological features found within continental interiors. Shields are indeed old, stable, crystalline rock formations, but they are not described as basaltic volcanoes. The oldest exposed rocks are typically found in the interior parts of continents, such as in shields, rather than along coastlines. Broad domes and basins may have deformed beds, but they are not typically described as having nearly vertical beds around their flanks.
Learning Objectives
- Recognize and delineate the geological characteristics found in the interiors of continents.