Abstract: Multiple deep passes crossing the present-day east-west continental divide and numerous south-oriented tributaries flowing to the present-day north-oriented Gallatin, Madison, Jefferson-Beaverhead-Red Rock, and Missouri Rivers provide evidence the Gallatin, Madison, and Jefferson-Beaverhead-Red Rock valleys originated as diverging channels in a large-scale south-oriented anastomosing channel complex that was subsequently reversed to form the present-day north-oriented Gallatin, […]
Category archives for Beaverhead River
Abstract: This essay uses topographic map evidence to interpret landform origins between the Jefferson River and the South Boulder River in the Tobacco Root Mountains, Madison County, Montana. The Jefferson River is formed west of the Tobacco Root Mountains at the confluence of the south and northeast oriented Big Hole River, the north-northeast oriented Beaverhead […]
Abstract: This essay uses topographic map evidence to interpret landform origins between the Beaverhead River and the Ruby River in the Ruby Range, Madison County, Montana. The Beaverhead River flows in a north-northeast direction west of the Ruby Range and north of the Ruby Range joins the Ruby River and south and northeast oriented Big […]
Abstract: This essay uses topographic map evidence to interpret landform origins between the Beaverhead River and the Red Rock River in Beaverhead County, Montana. The Red Rock River flows in a west and north-northwest direction to the north-northeast oriented Beaverhead River. The Blacktail Mountains are an upland region located between the north-northwest oriented Red Rock […]
Abstract: This essay uses topographic map evidence to interpret landform origins between the north oriented Ruby River and the west oriented Red Rock River in Beaverhead and Madison Counties, Montana. The Red Rock River flows in the east-to-west oriented Centennial Valley at the south end of the study region and further west turns to flow […]
Abstract: This essay uses topographic map evidence to interpret landform origins along the continental divide between the Red Rock River in Beaverhead County, Montana and Medicine Lodge Creek in Clark County, Idaho. The continental divide segment investigated in this essay extends from Bannack Pass in the west to Monida Pass in the east and is […]
Abstract: This essay uses topographic map evidence to interpret landform origins in the Beaverhead County, Montana Tendoy Mountains between the north-northwest oriented Red Rock River and north oriented Medicine Lodge Creek. Medicine Lodge Creek flows along the Tendoy Mountains west flank while the Red Rock River flows along the Tendoy Mountains east flank with water […]
Abstract: This essay uses topographic map evidence to interpret landform origins along the continental divide between Medicine Lodge Creek in Beaverhead County, Montana and the Lemhi River in Lemhi County, Idaho. The continental divide follows the crest of the Beaverhead Mountains. The Lemhi River flows in a north-northwest direction on the west side of the […]
Abstract: This essay uses topographic map evidence to interpret landform origins in the southeast Pioneer Mountains region between Grasshopper Creek and Beaverhead River in Beaverhead County, Montana. The Beaverhead River is today a north-northeast oriented drainage route east of the Pioneer Mountains and is joined by the north, northeast, southeast, south, and northeast oriented Big […]
Abstract: This essay uses topographic map evidence to interpret landform origins south of the Pioneer Mountains between the Big Hole River and Beaverhead River in Beaverhead County, Montana. The Big Hole River flows in a north direction along the Pioneer Mountains west flank and then makes a U-turn to flow in a southeast and south […]
Abstract: This essay uses topographic map evidence to interpret landform origins along the continental divide between the Horse Prairie Creek drainage basin in Beaverhead County, Montana and the Lemhi River drainage basin in Lemhi County, Idaho. The east-west continental divide in the region is located along the crest of the Beaverhead Mountains and serves as […]
Missouri River drainage basin landform origins research project 