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With an aid of a diagram discuss Lava Plains and Plateaus.

With an aid of a diagram discuss Lava Plains and Plateaus.

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Martin
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Lava plain: fairly level lowland below 500m above sea level covered by thin lava layers.

Lava plateau: fairly level highland/upland above 500m above sea level covered by thick layers.
-Formed by fissure eruption

Magma of low viscosity comes out of the ground through a fissure.

- It flows for a long distance before cooling and solidifying filling depressions and valleys forming a plain.

- Eruption occurs later and lava flows out through lines of weakness on crustal rock and solidified lava.

- The new lava spreads on top of the old lava forming a new layer.

- The process is repeated and a plateau is formed e.g. Mwea, Nandi and Laikipia Plains and Yatta and Uasin Gishu Plateaus.

marto answered the question on March 25, 2019 at 06:49

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