Lithosphere plastic deformation. The concept of the lithosphere as Earth’s strong outer layer was described by A.E.H. Love in his 1911 monograph "Some problems of Geodynamics" and further developed by Joseph Barrell, who wrote a series of papers about the concept and introduced the term "lithosphere". The concept was based on the presence of significant gravity anomalies over continental crust, from which he inferred that there must exist a strong, solid upper layer (which he called the lithosphere) above a weaker layer which could flow (which he called the asthenosphere). These ideas were expanded by Reginald Aldworth Daly in 1940 with
Booker T. & the M.G.'s to give each other three months to finish up all of their individual projects. They would then devote three years to what would be renamed "Booker T. Jones & the Memphis Group". Nine days later (October 1), Al Jackson, the man Cropper would remember as "the greatest drummer to ever walk the earth", was murdered in his home. The remaining three members and drummer Willie Hall (a session musician who had played on many Stax hits, such as Isaac Hayes's "Theme from "Shaft"") regrouped under their old name, Booker T. & the M.G.'s, and recorded the album "Universal Language" for