GENERAL GEOLOGY

Detailed explanation-1: -The Phanerozoic Eon is divided into three eras-the Paleozoic, the Mesozoic, and the Cenozoic (Figure (below). They span from about 540 million years ago to the present. We live now in the Cenozoic Era.

Detailed explanation-2: -The Phanerozoic is the current geological eon. It began approximately 541.0 million years ago. It is predated by the Precambrian eons.

Detailed explanation-3: -The Phanerozoic Eon is the current eon in the geologic time scale. It began around 541 million years ago (mya), and encompasses Earth’s history from then to the present day. It represents around 12% of Earth’s total history.

Detailed explanation-4: -The Phanerozoic Eon is divided into three eras, the Paleozoic, Mesozoic and Cenozoic eras. These were named for the kinds of fossils that were present. The Cenozoic is the youngest era and the name means “new life”.

Detailed explanation-5: -The Phanerozoic Eon covers 541 million years and includes three major geological eras: the Paleozoic, Mesozoic and, Cenozoic.