Why are different parts of a continent often different ages?
A) Different ages of terranes may be accreted onto continents, and newer-aged sedimentary rocks or volcanic rocks are deposited on top of older rocks.
B) Different ages only mean that different radiometric isotopes have been used to date the different parts; rocks on one continent are the same age.
C) Igneous, sedimentary, and metamorphic rocks were all created at different times, so these different types of rock yield the different ages.

Question

Quizplus · Accepted Answer

A) Different parts of a continent can be of different ages because continents grow and evolve over time through processes such as the accretion of terranes, deposition of sedimentary layers, and volcanic activity. These processes add new materials to the continents at different times, leading to the varied ages observed across different regions.

Why Are Different Parts of a Continent Often Different Ages