Geological Eras

2

Paleozoic

+INFO

Mesozoic

+INFO

3

Zenozoic

+INFO

+INFO

2023 Donec lectus diam, imperdiet eu pretium aliquam, fringilla et ligula. Donec malesuada elementum nibh a consectetur. Curabitur vehicula rutrum dolor ac fringilla. Quisque vel varius arcu, at congue purus. Curabitur molestie pretium lacinia

4

+INFO

1

Precambrian

Geological Eras

Ximena Martínez Escalera

5

Quaternary

+INFO

Click here ->

Click here ->

Lenght: It started approximately 4 billion years ago, when the Earth’s crust started to solidify because of the rain’s action on the hot rocks, and ended 570 million years ago.

Precambrian

Event: Those oceans where the habitat of the first unicellular organisms and of the first oxygen-producing organisms, which started to modify the dense atmosphere composed mainly of methane, hydrogen and carbon dioxide, as well as toxic gases released by volcanoes.

Paleozoic

Lenght:(541 million years ago to 252 million years ago)Events: During this era, life existed predominantly in the sea: invertebrates, jellyfishes, worms, mollusks, snails, and corals dominated the oceans. The first vertebrates appeared.

• Lorem ipsum dolor sit amet.
• Consectetur adipiscing elit.
• Sed do eiusmod tempor incididunt ut.

Consectetur adipiscing elit

Lorem ipsum dolor

Lorem ipsum dolor sit

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod.

Cenozoic

Lenght: (66 million years ago to present)Event: Because of the continuous fracture of Pangea, caused by the continental drift, Antarctica was definitively separated from Australia. Moreover, the expansion of the North Atlantic Ocean moves Greenland away from North America.

Mesozoic

Lenght: (252 million years ago to 66 million years ago)Events: At this era, North America and Eurasia were created. Gondwana remained together until the end of this era, when Australia was separated and formed an individual continent, still together with Antarctica. Dinosaurs reigned during this era, although birds and primitive mammals also appeared.

Quaternary Period

Lenght:Quaternary Period (2.6 million years ago to present)Events:The subsequent thaw caused the sea level to rise between 30 or 40 meters. The effect of such phenomenon was the flooding of big land surfaces, creating shallow seas and the widening of the continental shelf, especially in North America. The Homo sapiens has been dominating the Quaternary.