It is generally believed that vast areas of the continental crust known as shields have not been significantly changed for millions of years.

Question

Quizplus · Accepted Answer

Shields are ancient regions of the continental crust that have remained relatively stable and unchanged for millions of years. However, this does not mean that there has been no geological activity in these areas at all, as some processes like erosion and tectonic uplift can still occur slowly over time.

It Is Generally Believed That Vast Areas of the Continental