In the early Tertiary Period, a divide once existed, separating rivers draining into the Indian ocean and those that were tributaries of the Congo along the current Cherangani-Mau highlands. Land in the west began to rise, but rivers down cut and flowed on forming antecedent drainage. Land to the west was then uplifted again, forming the western arm of the Rift Valley. The plateau surface was also raised, but the middle section down warped too forming a basin. The basin also tilted eastwards.Rivers Kagera, Kafu and Katonga, which were tributaries of the Congo, reversed their flow, and started flowing eastwards, flooding their own valleys and filling the new basin. Rivers Nyando, Nzoia among others,continued flowing westwards, and were intercepted filling the new basin. The watershed to the east was uplifted as the Gregory Rift Valley formed, this increased the waters flowing into the new basin, forming Lake Victoria.
maurice.mutuku answered the question on June 9, 2017 at 05:46
- How is a hanging valley formed?(Solved)
Describe how a hanging valley is formed.
Date posted: June 9, 2017. Answers (1)
- In which ways does ice move?(Solved)
Give ways in which ice moves.
Date posted: June 8, 2017. Answers (1)
- Which mountains in East Africa are ice capped?(Solved)
Name mountains in East Africa which are ice capped.
Date posted: June 8, 2017. Answers (1)
- What are the types of glacial moraines?(Solved)
Give the types of glacial moraines.
Date posted: June 8, 2017. Answers (1)
- What is the difference between an ice sheet and an iceberg?(Solved)
Distinguish between an ice sheet and an iceberg.
Date posted: June 8, 2017. Answers (1)
- How is terminal moraine formed?(Solved)
Describe how terminal moraine is formed.
Date posted: June 8, 2017. Answers (1)
- What are the conditions leading to glacial deposition?(Solved)
Discuss the conditions that lead to glacial deposition.
Date posted: June 8, 2017. Answers (1)
- What is plucking? (Solved)
Describe plucking as a process in glacial erosion.
Date posted: June 8, 2017. Answers (1)
- How does a crag and tail form?(Solved)
Describe how a craig and tail is formed.
Date posted: June 8, 2017. Answers (1)
- What are the characteristics of a pyramidal peak?(Solved)
Describe the distinctive characteristics of a pyramidal peak.
Date posted: June 8, 2017. Answers (1)
- What are the distinctive characteristics of a corrie?(Solved)
Describe the distinctive characteristics of a corrie.
Date posted: June 8, 2017. Answers (1)
- What are the characteristics of a fiord(fjord)?(Solved)
Give the characteristics of a fiord(fjord).
Date posted: June 8, 2017. Answers (1)
- How does the width of a glacier channel influence the movement of a valley glacier?(Solved)
Explain how the width of a glacier channel influences the movement of a valley glacier.
Date posted: June 8, 2017. Answers (1)
- How does temperature influence movement of a valley glacier?(Solved)
Explain how temperature influences movement of a valley glacier.
Date posted: June 8, 2017. Answers (1)
- Apart from a valley glacier, which other ice masses are found on mountains in East Africa?(Solved)
Apart from a valley glacier, name other ice masses found on mountains in East Africa.
Date posted: June 8, 2017. Answers (1)
- How is ice formed on a high mountain?(Solved)
Describe how ice is formed on a high mountain.
Date posted: June 8, 2017. Answers (1)
- What are the positive effects of glaciations in lowland areas?(Solved)
Discuss the positive effects of glaciations in lowland areas.
Date posted: June 8, 2017. Answers (1)
- How is an arete formed?(Solved)
Describe how an arete is formed.
Date posted: June 8, 2017. Answers (1)
- What are the factors influencing the movement of ice from the place where it has accumulated?(Solved)
Discuss factors that influence the movement of ice from the place where it has accumulated.
Date posted: June 8, 2017. Answers (1)
- Why aren't ice sheets available in Kenya?(Solved)
Give reasons why there are no ice sheets in Kenya.
Date posted: June 8, 2017. Answers (1)