Paleozoic Era Geologic Processes Quiz

Mesozoic Era

• Reptiles dominated the Earth during the Mesozoic Era.

Geological Processes in Ethiopia

• During the Mesozoic Era, a major geological process occurred in Ethiopia, specifically rifting.

Timing of the Mesozoic Era

• The Mesozoic Era ended approximately 65 million years ago.

Land Tilt in Ethiopia

• During the Mesozoic Era in Ethiopia, the land was tilted in a Southeast-Northwest direction.

Variations in Sandstone Layers

• The age and thickness of the Sandstone layers vary in a Southeast-Northwest direction due to the land tilt.

Characteristic of the Mesozoic Era

• The Mesozoic Era was characterized by reptilian life forms.

Oil and Gas Deposits

• Mesozoic rocks have the greatest potential for oil and gas deposits due to the burial and heating of organic-rich sediments.

Depositions During the Mesozoic Era

• As the sea spread towards the land during the Mesozoic Era in Ethiopia, marine deposits such as limestone and sandstone were laid down.

Subsidence in Ethiopia

• The subsidence of the land during the Mesozoic Era in Ethiopia began around the same time as the rifting process.

Sedimentary Formations

• At the end of the Mesozoic Era, sedimentary formations such as Adigrat sandstone and Hintalo limestone were laid down upon the Precambrian rock surface.

Epoch in Geological Time Scale

• An epoch is a unit of time in the geological time scale, smaller than a period.

Formation of Sandstone and Limestone

• The process of subsidence and flooding led to the formation of sandstone and limestone layers, known as Adigrat sandstone and Hintalo limestone.