Pertanyaan

The East African Rift System makes up the Western and Eastern continental rifts stretching from the Afar region of Ethiopia down to Mozambique. It is an active continental rift that began millions of years ago, splitting at 7 annually. There are three active volcanoes in the continent: the Ol Doinyo Lengai in Tanzania, and Dalla Filla and Erta Ale in Ethiopia. And the Erta Ale is one of the world's most active volcanoes and possibly the longest existing lava lakes in the world. The regular eruption of these volcanoes along the rift and new insights into the break up of the continents add to the belief that the continent may be splitting to form a new Victoria microplate, one of the largest continental microplates, is a rift branch which, along chains of deep laken and volcanoes, makes up the several features of the East African Rift Systern Located between the eastern and western branches of the Rift, the Victoria microplate was found to be rotating counter-clockwise for the last two years with respect to the African plate, the major tectonic plate constituting most of the African continent, it was found to rotate in the opposite direction to all other neighbouring microplates in the region. While this gives researchers new insights into the splitting process of East African Rift System, they shaped-end of the rift at the Afar region is getting more attention, as to where an ocean will likely be formed if the splits continue. The "Y" shaped junction is where the African, Somalian, Arabian tectonic plates meet near Djibouti and Eritrea and it is asociated with active volcanom including the Erta Ale volcano. Researchers believe that volcanic activity in the region suggests a rift to ridge transition. The Erta Ale has been erupting constantly for over 50 years and it is believed that as Erta Ale continue to erupt a new narrow ocean benin with its mid-ocean ridge will be formed Nevertheless, researchers are uncertain about whether the split will continue and an ocean will be formed. And if that really happens, it will take tens of millions of years for an ocean to be eventually formed The main idea of the passage is that .... (A) Victoria microplate ceases rotating anticlockwise (B) the Erta Ale has not shown any volcanic activity in the last fifty years (C) scientists have not noticed Africa splitting (D) Africans witness a formation of new volcanoes. (E) a new ocean will probably be formed because the continent splits

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