All articles tagged with #turkana rift
A Nature Communications study shows the Turkana Rift’s crust has thinned dramatically (to about 12.7 km near the axis), marking necking—the advanced stage of continental breakup. While not imminent on human timescales, this process helps explain the region’s unusually rich fossil record of early humans and highlights how tectonics can shape both landscapes and the preservation of ancient life.
New seismic data show the Turkana Rift in East Africa has thinned to about 13 km in places and is widening at roughly 4.7 mm/year, indicating advanced necking of the crust and weakening that could eventually lead to continental breakup and the formation of a new ocean—though this would occur over millions of years. The finding helps explain the region’s deep basins and rich fossil record, tying tectonic activity to the Turkana Basin’s unique paleoanthropological significance.
Geologists find the Turkana Rift in East Africa is thinner than expected and has entered the necking phase, signaling that Africa will keep splitting and eventually form a new ocean over millions of years, a process linked to unusually rich fossil preservation in the region.
Scientists say the Turkana Rift in East Africa is nearing a final breakup that could eventually separate the eastern part of Africa from the rest of the continent and create a new ocean. Using seismic data, researchers show the region is further along in continental rifting than previously thought, with early oceanic crust forming near Afar; the process began millions of years ago and, if it continues, could occur over a few million years, reshaping Africa’s geography and tying into the region’s rich fossil record.
Scientists report that the Turkana Rift in East Africa has thinned its crust to about 12.7 km along the rift axis, marking the necking phase—the last stage before continental breakup. The crust was thicker (about 35 km) at the flanks, and two prior rifting episodes weakened the region, leading to a faster extension of roughly 1.2 mm/year. If this trajectory continues, full separation and a new ocean basin could form in 5–10 million years. This study offers the first real-time observation of necking in an active rift and provides insight into both Africa’s geologic evolution and its fossil record.
Scientists report that the Turkana Rift beneath East Africa has thinned to a critical point, a stage called necking that signals the continent is gradually breaking apart and could eventually form a new ocean. Center rift crust is about 13 kilometers thick, with surrounding areas over 35 kilometers, and the thinning indicates continued rifting on a timescale of millions of years. This tectonic activity also helps explain why the region preserves an unusually rich fossil record of human evolution, as subsidence and sedimentation favored fossil preservation.
A new seismic study finds the Turkana Rift in East Africa has a thinner crust (about 13 km) than previously thought, indicating the East African Rift is further along in the process of splitting Africa into two continents, though the full breakup is not imminent and would take several million years.