Recent gravity and aeromagnetic investigations of the Talkeetna Mountains of south-central Alaska (61.5–63.75°N, 145–151°W) were undertaken to study the region's framework geophysics and to reinterpret crustal structures and composition. Aeromagnetic data for this study were compiled from 13 available regional- and local-scale surveys. Over 400 new gravity stations were collected along 12 profiles in the study area and combined with 3286 existing regional data.

These data are brought together here with current stratigraphic, lithogeochemical, structural, isotopic, and paleontologic findings to bear on the tectonics and metallogeny of south-central Alaska, and in particular to: (1) help understand the regional tectonic character...