[Geophysical Data] Depth to lithosphere-asthenosphere boundary GeoTIFF grids for the United States, Canada, and Australia

The lithosphere-asthenosphere boundary (LAB), calculated from calibrated surface wave tomography models, is marked by an abrupt change in seismic velocity between the earth's cooler lithosphere (higher seismic velocities) and the warmer and more ductile asthenosphere (lower seismic velocities). GeoTIFF grids that were extracted from global compilations (Hoggard and others, 2020) that map depth to the LAB for the United States and Canada, and for Australia are provided in this report. Previous studies have identified locations of sediment-hosted Pb-Zn deposits occur along a gradient in the depth of the lithosphere-asthenosphere boundary. The LAB gradient is interpreted to represent a change from thicker to thinner...

Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Australia, CMMI, Canada, Critical Minerals Mapping Initiative, Exploring for the Future Program, All tags... GA, GGGSC, GSC, Geological Survey of Canada, Geology, Geophysics, and Geochemistry Science Center, Geoscience Australia, LAB, LAB depth, MRP, Mineral Resources Program, TGI, Targeted Geoscience Initiative, U.S. Geological Survey, USGS, United States, asthenosphere, critical minerals, depth to lithosphere-asthenosphere boundary, geoscientificInformation, lead, lithosphere, lithosphere-asthenosphere boundary, metallic mineral resources, mineral resources, zinc, Fewer tags