A tectonic province consisting of exposed Precambrian crystalline basement rocks that have remained undeformed for the last 542 million years is called a
A)shield.
B)platform.
C)continental basin.
D)phanerozoic orogeny.

Question

Quizplus · Accepted Answer

Shields are large areas of exposed Precambrian crystalline earth that have not been subjected to significant tectonic activity in the Phanerozoic eon, making them stable and relatively undeformed for over 542 million years.

A Tectonic Province Consisting of Exposed Precambrian Crystalline Basement Rocks