4. Results and Interpretation
4.1 Geochronology and
Thermochronology
We sampled bedrock along the west and east sides of the Totschunda fault
on several mapped and previously unmapped small hypabyssal plugs and a
small Cretaceous gabbro body (Figures 3, 4). Sample 19SOLO06 was
collected from a lateral moraine just downstream from a prominent
outcrop of hypabyssal intrusive where this sample clearly originated
based on lithology and travel trajectory (Figures 3, 4). U-Pb LA-ICP-MS
zircon dating was performed on four of the six bedrock samples from the
Lime Creek drainage, and seven of the eight detrital cobbles (Figures 3,
4, 5, 6). We report 14 AFT analyses: six from bedrock samples and 8 from
cobbles from the White River ‘Tillites’ (Figures 3, 4, 5, 6). (U-Th)/He
analyses were undertaken on apatite separates from 6 bedrock samples (6
grains per sample) and one zircon separate from a bedrock sample
(19SOLO02; 3 grains) from the Lime Creek area.