A cooperative geophysical'geologic transect of the Alaskan crust and upper mantle is being organized by the U.S. Geological Survey (USGS), the Alaska Division of Geological and Geophysical Surveys (ADGGS), the University of Alaska, and Rice University. The project is to be known as the Trans-Alaska Lithosphere Investigation (TALI). The route of TALI lies along the north-south corridor of the trans-Alaska oil pipeline between Prudhoe Bay and Valdez and extends offshore across the Pacific and Arctic continental margins. The transect will incorporate several supplementary profiles intersecting the primary route. TALI is envisaged as a coordinated multidisciplinary effort among government, academic and industry scientists and institutions.