Cenozoic Era Geologic Processes

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What was the major geologic activity during the Cenozoic Era that contributed to the making of the present-day landmass of Ethiopia and the Horn of Africa?

Quaternary volcanism and deposition

Elevation of the Andes Mountains

Uplifting of the Arabo-Ethiopian landmass and outpouring of lava flood (correct)

Formation of the Rift Valley

During which epoch did the uplifting of the Arabo-Ethiopian landmass reach a maximum height of 2,000 meters above sea level?

Paleocene

Oligocene

Eocene (correct)

Upper Jurassic

What characterized the uplifting of the Arabo-Ethiopian landmass during the Cenozoic Era?

It was of volcanic origin

It was epeirogenic in nature (correct)

It was a seismogenic character

It was due to glacial movements

Which region experienced the greatest uplift during the tectonic and volcanic activities in the Cenozoic Era?

Central Ethiopia Signup and view all the answers

What geologic process resulted from the immense tectonic force that fractured the crust during the Cenozoic Era?

Outpouring of lava flood Signup and view all the answers

Which comparable geological feature to the uplifting in Ethiopia is mentioned in the text?

Appalachian Mountains Signup and view all the answers

What geological event led to the formation of the Ethiopian plateau?

Tensional forces from the spreading of Trap Series lava Signup and view all the answers

How did the formation of the Rift Valley relate to plate tectonics theory?

It was associated with lateral crustal movements in opposite directions Signup and view all the answers

What geological process is responsible for the formation of the Rift Valley?

Major rifting and faulting Signup and view all the answers

How did the Red Sea and Gulf of Aden connect in the past?

Following the down-faulting of the Afar depression Signup and view all the answers

What geological event characterized the late Oligocene and Miocene Epochs?

Major faulting movement Signup and view all the answers

What caused the central part of the landmass to collapse and form a structural depression like the Rift Valley?

Lateral movement producing tensional forces Signup and view all the answers

Cenozoic Era Geologic Processes

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Questions and Answers

What was the major geologic activity during the Cenozoic Era that contributed to the making of the present-day landmass of Ethiopia and the Horn of Africa?

During which epoch did the uplifting of the Arabo-Ethiopian landmass reach a maximum height of 2,000 meters above sea level?

What characterized the uplifting of the Arabo-Ethiopian landmass during the Cenozoic Era?

Which region experienced the greatest uplift during the tectonic and volcanic activities in the Cenozoic Era?

What geologic process resulted from the immense tectonic force that fractured the crust during the Cenozoic Era?

Which comparable geological feature to the uplifting in Ethiopia is mentioned in the text?

What geological event led to the formation of the Ethiopian plateau?

How did the formation of the Rift Valley relate to plate tectonics theory?

What geological process is responsible for the formation of the Rift Valley?

How did the Red Sea and Gulf of Aden connect in the past?

What geological event characterized the late Oligocene and Miocene Epochs?

What caused the central part of the landmass to collapse and form a structural depression like the Rift Valley?

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