Lithosphere for silicate rocks, and formula_4 is the age of the given part of the lithosphere. The age is often equal to L/V, where L is the distance from the spreading centre of mid-oceanic ridge, and V is velocity of the lithospheric plate. Oceanic lithosphere is less dense than asthenosphere for a few tens of millions of years but after this becomes increasingly denser than asthenosphere. This is because the chemically differentiated oceanic crust is lighter than asthenosphere, but thermal contraction of the mantle lithosphere makes it more dense than the asthenosphere. The gravitational instability of mature oceanic lithosphere has the
The Good Earth cannot remember what I did with that manuscript." After Buck died in 1973, her heirs reported it stolen. It finally turned up at Freeman's Auctioneers & Appraisers in Philadelphia around 2007 when it was brought in for consignment. The FBI were notified and it was handed over by the consignor. The Good Earth The Good Earth is a novel by Pearl S. Buck published in 1931 that dramatizes family life in a Chinese village in the early 20th century. It is the first book in a trilogy that includes "Sons" (1932) and "A House Divided" (1935). It was the best-selling