Evidence Of Pleistocene Pluvials

Question 1

Pluvials lakes

Answer 1

These are lakes which have experienced large fluctuations in volume due to changes in temperature and rainfall.
Lake Bonneville is Pluvial Lake.
Only 5% it’s original size.
Now a salt flat.

Question 2

Evidence of major Rivers

Answer 2

In 2013, German and British researchers founds evidence for 3 major rivers running across the Sahara.
Between 130,000-100,000 years ago.
Now Burried under dunes.

Question 3

Wadis

Answer 3

Various wadis across Africa.

The steep sided rocky valleys are evidence of previously wetter climates.

Question 4

Define Pleistocene Pluvial

Answer 4

Period of increased moisture and lower evaporation.

Deserts were once wetter areas.

Question 5

Tectonic shift

Answer 5

Africa has shifted tectonically.

It was previously laid further south.

Question 6

Previous Farmland now desert.

Answer 6

What was once farmland and forestry in the 1900s.
Is barren desert today.
Cereal grown in Roman times, was in areas which are now desert.