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
Is There No Place on Earth for Me? The book originally ran as a four-part series in "The New Yorker" in 1981 and won the 1983 Pulitzer Prize for non-fiction. Is There No Place on Earth for Me? Is There No Place On Earth For Me? written by Susan Sheehan and published in 1982 by Houghton Mifflin, it won the 1983 Pulitzer Prize for General Non-Fiction. This book recounts the lonely, harrowing life of Sylvia Frumkin who is diagnosed schizophrenic. Sheehan followed Frumkin for two-and-a-half years, much of which was spent inside a mental hospital, Creedmoor Psychiatric Center, in Queens. It presents outstanding reporting on what it's like