Tag archives for Geology

Missouri River Drainage Basin Landform Origins Research Project is a 21st century Expedition of Discovery

  The Missouri River drainage basin landform origins research project is the first known scientific expedition of discovery to systematically study detailed topographic map evidence for all major drainage divide areas within and surrounding the Missouri River drainage basin and in a sense is a modern-day equivalent of historical voyages of discovery where explorers traveled […]

Clear Creek-Bear Creek drainage divide area landform origins in the Colorado Front Range, USA

  Abstract: This essay uses topographic map evidence to interpret landform origins in the Clear Creek-Bear Creek drainage divide area in the Colorado Front Range. Clear Creek is a north and east oriented stream originating in the Colorado Front Range and joining the north, southeast, and northeast oriented South Platte River on the Colorado Piedmont […]

Lodgepole Creek-South Platte River drainage divide area landform origins in Cheyenne and Kimball Counties, Nebraska and Sedgwick and Logan Counties, Colorado, USA

  Abstract: This essay uses topographic map evidence to interpret landform origins in the Lodgepole Creek-South Platte River drainage divide area in Kimball and Cheyenne Counties, Nebraska and Sedgwick and Logan Counties, Colorado. Kimball and Cheyenne Counties are located along the south margin of the Nebraska panhandle and Sedgwick and Logan Counties are located in […]

North Platte River-South Platte River drainage divide area landform origins in Deuel, Garden, and Keith Counties, Nebraska, USA

Abstract: This essay uses topographic map evidence to interpret landform origins in the North Platte River-South Platte River drainage divide area in Deuel, Garden, and Keith Counties, Nebraska. Deuel, Garden, and Keith Counties are located in western Nebraska west of where the northeast oriented South Platte River and the southeast oriented North Platte River meet […]

Red Rock River-Medicine Lodge Creek (South) drainage divide area landform origins along the continental divide, Beaverhead County, Montana and Clark County, Idaho, USA

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 […]

Red Rock River-Medicine Lodge Creek (North) drainage divide area landform origins, Tendoy Mountains, Beaverhead County, Montana, USA

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 […]

Grasshopper Creek-Beaverhead River drainage divide area landform origins, southeast Pioneer Mountains region, Beaverhead County, Montana, USA

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 […]

Big Hole River-Salmon River drainage divide area landform origins along the continental divide, Beaverhead County, Montana and Lemhi County, Idaho, USA

Abstract: This essay uses topographic map evidence to interpret landform origins along the continental divide between the Big Hole River in Beaverhead County, Montana and the Salmon River in Lemhi County, Idaho. The Big Hole River flows in a north direction in Montana on the east side of the Beaverhead Mountains while on the west […]

Clark Fork-Big Hole River drainage divide area landform origins along continental divide, Granite and Deer Lodge Counties, Montana, USA

Abstract: This essay uses topographic map evidence to interpret landform origins along the continental divide between Clark Fork and the Big Hole River in Granite and Deer Lodge Counties, Montana. The east-west continental divide crosses the study region in roughly a southwest to northeast direction along the Anaconda Range crest with drainage north of the […]

Mill Creek-Big Hole River drainage divide area landform origins along continental divide, Silver Bow and Deer Lodge Counties, Montana, USA

Abstract: This essay uses topographic map evidence to interpret landform origins in the region between Mill Creek and the Big Hole River along the east–west continental divide in Silver Bow and Deer Lodge Counties, Montana. The east-west continental divide crosses the study region in roughly a west to east direction with north oriented drainage north […]

Little Blackfoot River-Boulder River drainage divide area landform origins along continental divide, Powell and Jefferson Counties, Montana, USA

Abstract: This essay uses topographic map evidence to interpret landform origins in the region between the Little Blackfoot River and the Boulder River along the east –west continental divide in Powell and Jefferson Counties Montana. The continental divide in the study region serves as the Powell-Jefferson County border with Powell County being west of the […]

Boulder River-Missouri River drainage divide area landform origins in Jefferson and Broadwater Counties, Montana, USA

Abstract: This essay uses topographic map evidence to interpret landform origins in the region between the Boulder River and the Missouri River in Jefferson and Broadwater Counties, Montana. The Missouri River flows in a north-northwest direction in the study area while the Boulder River flows in a south-southeast and southwest direction. The south oriented Boulder […]

Prickly Pear Creek-Missouri River drainage divide area landform origins in Jefferson and Broadwater Counties, Montana, USA

Abstract: This essay uses topographic map evidence to interpret landform origins in the region between Prickly Pear Creek and the Missouri River in Jefferson and Broadwater Counties, Montana. The Missouri River flows in a north-northwest direction in the study area while Prickly Pear Creek is a west-northwest and north-northeast oriented Missouri River tributary west of […]

Origin of North America east-west continental divide, Little Blackfoot River-Missouri River drainage divide area landform origins in Lewis and Clark and Powell Counties, Montana, USA

Abstract: This essay uses topographic map evidence to interpret landform origins in the region between Little Blackfoot River and the Missouri River along the east-west continental divide in Lewis and Clark and Powell Counties, Montana. East of the continental divide the Missouri River flows in a north-northwest direction in eastern Lewis and Clark County before […]

Rotten Grass Creek-Little Bighorn River drainage divide area landform origins in Big Horn County, Montana, USA

Abstract: This essay uses topographic map evidence to interpret landform origins in the region between Rotten Grass Creek and the Little Bighorn River in Big Horn County, Montana. Rotten Grass Creek is a northeast, north, and north-northwest oriented Bighorn River tributary originating in the high Bighorn Mountains near the Montana-Wyoming state line. The Little Bighorn […]

Clarks Fork Yellowstone River-Bighorn River drainage divide area landform origins near the Montana-Wyoming border, USA

Abstract: This essay uses topographic map evidence to interpret landform origins in the region between the Clarks Fork Yellowstone River and the Bighorn River and its Shoshone River tributary near the Montana-Wyoming border. Clarks Fork of the Yellowstone River originates in the Montana Beartooth Mountains and flows in a southeast direction into Wyoming before turning […]

Pryor Creek-Bighorn River drainage divide area landform origins Big Horn and Yellowstone Counties, Montana, USA

Abstract: This essay uses topographic map evidence to interpret landform origins in the region between Pryor Creek and the Bighorn River in Yellowstone and Big Horn Counties, Montana. Pryor Creek is a northwest, north, and north-northeast oriented Yellowstone River tributary originating in the Pryor Mountains, which are located south of Billings, Montana. East of Pryor […]