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The Suguta Valley, also known as the Suguta Mud Flats, is an arid part of the Great Rift Valley in Kenya (Africa), directly south of Lake Turkana. ==Location== The Suguta valley today is one of the driest parts of Kenya, with annual rainfall below . Lake Logipi seasonally fills a small part of the northern end of the valley. The valley has a relatively flat floor about above sea level. It is bordered by land to the east and west rising to and dotted with volcanic cinder cones. The Barrier Volcano, a broad volcanic complex, separates the valley from Lake Turkana. Mount Ngiro rises to the east of the Suguta valley. The Losiolo Escarpment, rising above the valley floor on the east side near Maralal provides one of the most dramatic views of the Kenyan rift valley. Namarunu, a volcano active in historic times, extends into the valley from the western wall. The Suguta Valley lies along the axis of the Gregory Rift, which has been faulting in this area since the Pliocene along a belt wide. The belt lies between the Ngiro basement uplift to the east and the Loriu Plateau to the west, and is thicker in the eastern part. Exposed volcanic rocks include basalts, tuffs and ash formed between 4.2 and 3.8 million years ago, the products of trachytic volcanism from 3,8 to 2.6 million years ago and basaltic and alkali basaltic rocks created from that period until the present. In the early Pliocene the least horizontal stress direction - the direction of rift expansion - was NW-SE. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Suguta Valley」の詳細全文を読む スポンサード リンク
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