Regions where Precambrian metamorphic rocks are exposed at the surface are termed ________.
A) shields
B) cratonic platforms
C) convergent margins
D) domes

Question

Quizplus · Accepted Answer

Shields are regions where Precambrian metamorphic rocks have been exposed at the surface. These areas have been eroded over time and have been uplifted due to tectonic forces. The Canadian Shield and the Baltic Shield are examples of shields. Cratonic platforms are stable regions of the Earth's crust that have not been affected by tectonic forces for a long time. Convergent margins are areas where two tectonic plates collide, which can result in volcanic activity, earthquakes, and the formation of mountains. Domes are elevated circular structures that are formed by the uplift of rock layers.

Regions Where Precambrian Metamorphic Rocks Are Exposed at the Surface