D Question 23 1.5 pts The rocks forming in this area are of the same composition

Question

D Question 23 1.5 pts The rocks forming in this area are of the same composition as the rocks forming in the Gulf of Aden and the Red Sea. Why? In both places, collision of continents is causing melting of rocks. In both places, a mantle plume is heating up the continental crust to form rhyolitic lava In both places, divergence of the Earth's crust decreases pressure on the underlying mantle, allowing it to partially melt to form basaltic magma. In both places, oceanic crust is being subducted and partially melted to form a volcanic arc D Question 24 1.5 pts Within the East African Rift Valley, find "Mt. Killimanjaro: Zoom in and out and fly around the volcano to get a sense of its scale and geometry What kind of volcano is this? HINT: Clicking on the volcano symbol will bring up a box with information about the volcano, including what kind of volcano it is cinder cone Icelandic-style plateau basalt composite or stratovolcano shield volcano 2 3 4 6 8 0

Explanation / Answer

Ans 23. (C) In both places, divergence of the earth 's crust decreases pressure on the underlying mantle. Allowing it to partially melt to form basaltic magma.(flood basaltic erupted and along the margins of the red sea these lavas are up to 2000m thick).

Ans 24 (C) composite and stratovolcano

Ans25. (A) older in north and younger towards south

Ans 26. (A) the movement of african continent is towards northeast .

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