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When the lithosphere is subject to a horizontal extensional force it will stretch, becoming thinner. Eventually, it will rupture, leading to the formation of a rift valley.This process is accompanied by surface manifestations along the rift valley in the form of volcanism and seismic activity. Rifts are the initial stage of a continental break-up and, if successful, can lead to the formation of a new ocean basin.An example of a place on Earth where this has happened is the South Atlantic ocean, which resulted from the break up of South America and Africa around 138m years ago -- ever noticed how their coastlines match like pieces of the same puzzle?Continental rifting requires the existence of extensional forces great enough to break the lithosphere. The East African Rift is described as an active type of rift, in which the source of these stresses lies in the circulation of the underlying mantle. Beneath this rift, the rise of a large mantle plume is doming the lithosphere upwards, causing it to weaken as a result of the increase in temperature, undergo stretching and breaking by faulting.Evidence for the existence of this hotter-than-normal mantle plume has been found in geophysical data and is often referred to as the "African Superswell."This superplume is not only a widely accepted source of the pull-apart forces that are resulting in the formation of the rift valley but has also been used to explain the anomalously high topography of the Southern and Eastern African Plateaus. 1506
While the cause of the fire is under investigation, the blaze caused major damage to a pickup truck parked in a carport and spread to the back of the home. 155
With set pieces, staging, attractions and experiences Toy Story Land represents the best of Walt Disney Imagineering's collaboration with our storytelling partners at Pixar Animation Studios, said Bob Chapek, chairman of Walt Disney Parksand Resorts. "This new land will place guests inside the wondrous world of Woody, Buzz and their pals – and invite everyone to experience the joy of being a toy." 415
Where could the convention go?A number of US cities have been floated as possible alternatives, and it is likely republicans will chose a state run by a republican governor. Nashville, Las Vegas, Orlando, and Jacksonville are possible cities. 243
WRAL News would not agree to that. Riddleberger's past includes a felony conviction for taking indecent liberties with a child in in 1995. The charge stemmed from his videotaping himself having sex with a 15-year-old girl when he was 25, the Greensboro News & Record reported in 2014. 288
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