The oldest rocks and minerals on Earth's surface have been found in Canada and Australia and are from the:
A) Precambrian Era
B) Paleozoic Era
C) Mesozoic Era
D) Cenozoic Era

Question

Quizplus · Accepted Answer

The Precambrian Era is the oldest part of Earth's history, covering the vast span of time from the formation of the Earth about 4.6 billion years ago to the start of the Cambrian Period, about 541 million years ago. The oldest rocks and minerals found on Earth's surface, which are in Canada and Australia, date back to this era.

The Oldest Rocks and Minerals on Earth's Surface Have Been