Continental drift plate tectonics theory. In particular, the English geologist Arthur Holmes proposed in 1920 that plate junctions might lie beneath the sea, and in 1928 that convection currents within the mantle might be the driving force. Holmes' views were particularly influential: in his bestselling textbook, "Principles of Physical Geology," he included a chapter on continental drift, proposing that Earth's mantle contained convection cells which dissipated radioactive heat and moved the crust at the surface. Holmes' proposal resolved the phase disequilibrium objection (the underlying fluid was kept from solidifying by radioactive heating from the core). However, scientific communication in the '30 and
Society for the Study of Black Religion The group chose the name "religion" rather than "theology" to avoid the constraints imposed by the narrower term. Charles Shelby Rooks, who would later become the first African-American head of a traditionally white-led seminary at the Chicago Theological Seminary, took a leading role in the founding and served as the SSBR's first elected president. Society for the Study of Black Religion The Society for the Study of Black Religion is the oldest scholarly society dedicated to the study of the African-American religious experience. It is dedicated to "scholarly research and discussion about the religious experiences of Blacks." The SSBR was