Continental drift Permian era but failing to account for glaciation in India, Australia and South Africa. Geophysicist Jack Oliver is credited with providing seismologic evidence supporting plate tectonics which encompassed and superseded continental drift with the article "Seismology and the New Global Tectonics", published in 1968, using data collected from seismologic stations, including those he set up in the South Pacific. It is now known that there are two kinds of crust: continental crust and oceanic crust. Continental crust is inherently lighter and its composition is different from oceanic crust, but both kinds reside above a much deeper "plastic" mantle. Oceanic crust
The Association for the Study of Play the University of Illinois at Urbana–Champaign (then the University of Illinois) and an affiliate professor in the Department of Anthropology. The scholars who met there formed the "Cultural Anthropology of Play Reprint Society." The next year, Michael Salter organized the first formal meeting of the new organization at the University of Western Ontario during the North American Society for Sport History (NASSH) convention. Participants renamed the organization "The Association for the Anthropological Study of Play" and elected B. Allan Tindall as president. In 1987, the organization changed its name to "The Association for the Study of Play" (TASP). The proceedings