East African Rift

The EAR began developing around the onset of the Miocene, 22–25 million years ago. East African Rift . SUIVEZ-NOUS SUR LES RÉSEAUX SOCIAUX. The plate boundary system includes several continental rift arms and one or more smaller microplates. Geologic Hazards. The East African Rift System is the major active tectonic feature of the Sub-Saharan Africa region.

The East African Rift System is one of the most outstanding and significant rift systems on Earth and transects the high-elevation Ethiopian and East African plateaux. CBS News uses Arizona earth fissure images to contrast with large ground fracture in the East African Rift of Kenya. The East African Rift (EAR) or East African Rift System (EARS) is an active continental rift zone in East Africa. DERNIÈREMENT. This astronaut photograph of the Eastern Branch of the Rift (near Kenya’s southern border) highlights the classical geologic structures associated with a tectonic rift valley. Saria et al. 1). Breadcrumb. The East African rift has two branches, the Western Rift Valley and the Eastern Rift Valley. According to GPS data (e.g. Although the seismicity level of this divergent plate boundary can be described as moderate, several damaging earthquakes have been reported in historical times, and the seismic risk is exacerbated by the high vulnerability of the local buildings and structures. In the past it was considered to be part of a larger Great Rift Valley that extended north to Asia Minor. These two plates are moving away form each other and also away from the Arabian plate to the north. The East African Rift System (EARS) is a newly forming divergent boundary between the Nubian and Somalian plates (Fig. Geologists are still debating exactly how rifting comes about, but the process is so well displayed in East Africa (Ethiopia-Kenya-Uganda-Tanzania) that geologists have attached a name to the new plate-to-be; the Nubian Plate makes up most of Africa, while the smaller plate that is pulling away has been named the Somalian Plate (Figure 1).

Planète Devenez un … The East African Rift is one of the great tectonic features of Africa, caused by fracturing of the Earth’s crust. Around 45 million years ago, spreading like a gigantic crack the length of Africa, the East African Rift System (EARS) began slowly splitting that continent into east and west, starting in southern Ethiopia/northern Kenya.

News - 4 April 2018 . La vallée du Grand Rift est le nom donné en 1894 par l'explorateur écossais John Walter Gregory [1], après son voyage en Afrique orientale britannique [2], à un ensemble géologique constitué d'une série de failles et de volcans, situé en Afrique de l'Est. Large crack in East African Rift is evidence of continent splitting in two. Home - East African Rift Rifting in East Africa | Earth Fissures in Arizona. Its geology complicated by volcanic intrusions, the East African Rift System challenges oil and gas explorers.