Structure of the Earth discontinuity (a second order discontinuity). The uppermost mantle together with the crust constitutes the lithosphere. The crust-mantle boundary occurs as two physically different events. First, there is a discontinuity in the seismic velocity, which is most commonly known as the Mohorovičić discontinuity or Moho. The cause of the Moho is thought to be a change in rock composition from rocks containing plagioclase feldspar (above) to rocks that contain no feldspars (below). Second, in oceanic crust, there is a chemical discontinuity between ultramafic cumulates and tectonized harzburgites, which has been observed from deep parts of the oceanic crust that have been
The Man from Earth producing sequels. A Kickstarter campaign to crowdfund a sequel named "The Man From Earth II: Man From Earth Millennium" was announced in September 2013, but it was not able to collect the minimum-required supporting by October 2013. Another attempt was then made to crowdfund a series, "Man From Earth: The Series", based on the film. The second crowd-funding effort completed successfully in August 2014. The Man from Earth The Man from Earth is a 2007 American drama science fiction film written by Jerome Bixby and directed by Richard Schenkman. It stars David Lee Smith as John Oldman, the protagonist. The