Why are different parts of a continent often different ages?
A. Igneous, sedimentary, and metamorphic rocks were all created at different times, so these different types of rock yield the different ages.
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. Different ages of terranes may be accreted onto continents, and newer-aged sedimentary rocks or volcanic rocks are deposited on top of older rocks.
Answer: C
You might also like to view...
Most useful oil deposits are usually found
A. Saturating porous rocks, like water in a sponge B. In pools on the earth's surface, where geologic pressures have forced them to collect C. Locked in the mineral structure of a rock formation D. In a liquid pool under a layer of impermeable shale E. In small pools directly above the bedrock
Explain how increased atmospheric carbon dioxide levels and warmer coastal waters resulting from global climate change may affect coral reefs
What will be an ideal response?
Mathematically, the affine transformation uses a pair of:
A. third- or higher-order polynomial equations B. second-order polynomial equations C. first-order polynomial equations
Large dam and reservoir projects ____.
A. have no real benefits other than water supply B. can create new farmland C. keeps dirty silt from polluting rivers D. disrupt the migration and spawning of fish E. can last forever