Briefly explain the difference between the tectonic setting of shield areas during the Precambrian and
since the onset of the Phanerozoic. What will be an ideal response?
During the Precambrian, the areas that are now part of the shield were tectonically active with
volcanism, metamorphism, and folding and faulting. During that time, continents grew by accretion.
Since the beginning of the Phanerozoic, these areas have been tectonically inactive and have been
eroded to topographically flat, stable areas.
You might also like to view...
When contrasting a weather warning, with a weather watch, the warning is usually designated for a ________ and means you should ________.
A) smaller area; be aware that conditions are favorable for severe weather B) larger area; be aware that conditions are favorable for severe weather C) larger area; seek shelter immediately D) smaller area; seek shelter immediately
Mammals that give birth to live young that need little or no protection after birth are called
____________________ mammals Fill in the blank(s) with the appropriate word(s).
The B-horizon in soil is the zone of accumulation.
Answer the following statement true (T) or false (F)
Most Native American settlements in the Intermontane were located near what?
A) Mountains B) Rivers C) Forests D) Rocky areas