1989 Walter H. Bucher Medal to Arthur H. Lachenbruch



Art Lachenbruch is a keen observer of the Earth, and from his observations has distilled important generalizations concerning the processes involved in creating and modifying the Earth's crust. During an extraordinary career spanning 4 decades with the U.S. Geological Survey, Art has ranged widely over and delved deeply into the fields of geothermal and geomechanical research.

Art has combined astute observations of geological phenomena with carefully designed experiments and elegant mathematical representations to provide physical insight into a variety of fundamental problems concerning the Earth's lithosphere. These problems include the physics of permafrost, midocean ridges, transform faults (including continental transforms, i.e., the San Andreas fault), the vertical distribution of heat-producing elements in the crust, and continental extension and basin formation.