For several decades Peter Friend has been one of the leading figures in sedimentary geology and throughout that time he has helped scores of other people by sup

Thermochronology - the use of temperature-sensitive radiometric dating meth-ods to reconstruct the thermal histories of rocks - has proved to be an important me

Subduction is a major process that plays a first-order role in the dynamics of the Earth. The sinking of cold lithosphere into the mantle is thought by many aut