Preliminary Geology of the North Meadow Creek Area, Tobacco Root Mountains, Southwest Montana: Measurements along the North Meadow Creek Fault

A previously unmapped fault forms a low scarp on a terrace along North Meadow Creek, a drainage on the east flank of the Tobacco Root Mountains, in SW Montana. The fault extends ~7.5 km between points where it disappears beneath alluvium of Madison Valley, on the SE, and glacial moraines on the NW. It appears on neither the Geologic Map of Montana nor the Quaternary Fault and Fold Database of the United States. It separates a number of rock units by unknown amounts and senses of offset. This data release provides additional information for figures in the Open-File Report cited above, including a table of field measurements.