TY - RPRT TI - Compressional-wave seismic velocity, bulk density, and their empirical relations for geophysical modeling of the Midcontinent Rift System in the Lake Superior region AU - V. J. S. Grauch PY - 2023 DO - 10.3133/sir20235061 UR - https://pubs.usgs.gov/publication/sir20235061 ID - sir20235061 ER -