The obtained crustal thicknesses range from 28 to 42km, with the thickest crust confined to the northern part of the West African Craton, the Kaapvaal craton, and the Congo cuvette.
Is the African plate thick or thin?
Almost all diamond locations occur where the lithosphere is 175–200 km thick, but they are largely absent from the regions of the thickest lithosphere. The lithosphere is thin beneath the Pan-African terranes of northern Africa but appears to be thicker beneath the Pan-African Damara Belt in southern Africa.
Is African plate large?
The African plate makes up a large part of the Earth’s crust, and includes not only the continent of Africa, but also large amounts of the Atlantic and Indian Oceans.
Is African plate oceanic?
The African Plate is both oceanic and continental. It has the whole African continent on top of it as well as the oceanic crust of the Atlantic Ocean. There is a divergent boundary between the African plate and the North American Plate and the South American Plate.
Where is the thinnest continental crust in Africa?
The thinnest crust (28-34km) follows a central East-West trend coinciding with Cretaceous rifts and the Cameroon volcanic line. The lithosphere reaches 220 km beneath the Congo craton, but remains globally thin (ca.
How fast are the plates moving?
They move at a rate of one to two inches (three to five centimeters) per year.
Is Africa breaking apart?
The African continent is slowly separating into several large and small tectonic blocks along the diverging East African Rift System, continuing to Madagascar — the long island just off the coast of Southeast Africa — that itself will also break apart into smaller islands.
How long before Africa splits?
It’s thought that Africa’s new ocean will take at least 5 million to 10 million years to form, but the Afar region’s fortuitous location at the boundaries of the Nubian, Somali and Arabian plates makes it a unique laboratory to study elaborate tectonic processes.
Is Australia moving closer to Antarctica?
Over the next 100m years, the position of Australia moved steadily south, towards more temperate zones, and finally to the edge of the Antarctic Circle by roughly 270m years ago (seven minutes ago, in our geofilm). … Finally, about 150m years ago, Australia begins to slowly move back towards the equator.