A geomorphic history based on topographic map evidence Abstract: This overview essay provides highlights from more detailed essays interpreting landform origins along drainage divides in and around the Montana Marias River drainage basin. The more detailed essays can be found under Marias River on the sidebar category list. The Marias River is a Missouri River tributary with […]
Tag archives for Geomorphology
Gasconade River drainage basin area landform origins, Missouri, USA, Overview Essay
A geomorphic history based on topographic map evidence
The Gasconade River is a northeast and north-northeast oriented Missouri River tributary and flows from near Seymour, Missouri to join the east-oriented Missouri River, near Gasconade, Missouri. Major Gasconade River tributaries include north-oriented the Osage Fork, Roubidoux Creek, and the Big Piney River. This Gasconade River knol collection provides a summary of knols describing landform origins for all drainage divides surrounding the Gasconade River drainage basin. Knols being summarized are based entirely on illustrated topographic map evidence and interpret landform origins from a previously unexplored perspective of a deep glacial erosion and a thick ice sheet that melted fast paradigm. Topographic map evidence shown and discussed in these knols documents how the deep Gasconade River valley and its north-oriented tributary valleys were eroded by systematic reversals of an immense south-oriented flood, which was derived from a rapidly melting North American ice sheet. Prior to headward erosion of the deep Missouri River valley flood waters flowed south across what is now the Gasconade River drainage basin to what was then the newly eroded southeast-oriented White River valley and what were then actively eroding south-oriented White River tributary valleys. Headward erosion of the deep east-oriented Missouri River valley beheaded the south-oriented flood flow routes in sequence from east to west. Flood waters on north ends of beheaded flood flow routes reversed flow direction to erode deep north-oriented valleys. The actively eroding north-oriented valleys captured significant south-oriented flood flow from west of the actively eroding Missouri River valley head. The captured flood water moved in southeast, east, and northeast directions and caused the north-oriented valleys, such as the Gasconade River valley, to erode headward toward the southwest and to also behead south-oriented flood flow routes in sequence from east to west. The Gasconade River valley was able to erode headward for a significant distance faster than the actively eroding Missouri River valley and its Osage River tributary valley were able to behead south-oriented flood flow routes supplying flood waters to the actively eroding Gasconade River valley. Headward erosion of the deep Osage River valley from the actively eroding Missouri River valley finally beheaded and captured all flood flow routes to the what had been the actively eroding Gasconade River valley. Knols in this collection illustrate and discuss how topographic map evidence including positions and orientations of present day valleys, the nature of Gasconade River valley and tributary valley meanders, and through valleys crossing present day drainage divides, all provide evidence supporting this flood origin interpretation.
A geomorphic history based on topographic map evidence Abstract: The western Heart River drainage basin is located in southwest North Dakota, USA. Although detailed topographic maps of the western Heart River basin have been available for more than fifty years detailed map evidence has not previously been used to interpret western Heart River drainage basin […]
A geomorphic history based on topographic map evidence Abstract: The Knife River drainage basin is located in west-central North Dakota. Although detailed topographic maps of the Knife River basin have been available for more than fifty years detailed map evidence has not previously been used to interpret Knife River drainage basin geomorphic history. The interpretation […]
A geomorphic history based on topographic map evidence Abstract: The Cannonball River drainage basin is located in southwest North Dakota, USA. Although detailed topographic maps of the Cannonball River basin have been available for more than fifty years detailed map evidence has not previously been used to interpret Cannonball River drainage basin geomorphic history. The […]
A geomorphic history based on topographic map evidence Abstract: The eastern Heart River drainage basin is located in south central North Dakota, USA. Although detailed topographic maps of the eastern Heart River basin have been available for more than fifty years detailed map evidence has not previously been used to interpret the eastern Heart River […]
A geomorphic history based on topographic map evidence Abstract: Deep and Sand Creek are Little Missouri River tributaries located in southwest North Dakota, USA. Although detailed topographic maps of the Deep and Sand Creek drainage basins have been available for fifty years detailed topographic map evidence has not previously been used to interpret Deep and […]
A geomorphic history based on topographic map evidence Abstract: Beaver Creek is a Little Missouri River tributary originating in eastern Montana and flowing into western North Dakota where it joins the Little Missouri River. Although detailed topographic maps of the Beaver Creek drainage basin have been available for fifty years detailed topographic map evidence has […]
A geomorphic history based on topographic map evidence Abstract: The Little Missouri-North Fork Grand River drainage divide area is located in northwest South Dakota and southwest North Dakota, USA. Although detailed topographic maps of the Little Missouri-North Fork Grand River drainage divide area have been available for more than fifty years detailed map evidence has […]
A geomorphic history based on topographic map evidence Abstract: The North Fork Grand River drainage basin is located in southwest North Dakota and northwest South Dakota, USA. Although detailed topographic maps of the North Fork Grand River drainage basin have been available for more than fifty years detailed map evidence has not previously been used […]
A geomorphic history based on topographic map evidence Abstract: The Cherry Creek region of McKenzie County, North Dakota is located between the Little Missouri River to the south, the Yellowstone River to the west and northwest, and the Missouri River to the north and east and had a complex drainage history. Although detailed topographic maps […]
A geomorphic history based on topographic map evidence Abstract: The Little Missouri River-South Fork Grand River drainage divide area is located in northwest South Dakota, USA. Although detailed topographic maps of the Little Missouri-South Fork Grand River drainage divide area have been available for more than fifty years detailed map evidence has not previously been […]
A geomorphic history based on topographic map evidence Abstract: Boxelder Creek is a northeast-oriented tributary to the north and northeast-oriented Little Missouri River. Landforms located along the Boxelder Creek-Little Missouri River drainage divide provide important clues to the origin of eastern Montana and western South Dakota landforms. Although detailed topographic maps of the Boxelder Creek-Little […]
A geomorphic history based on topographic map evidence Abstract: The Little Beaver Creek-Boxelder Creek drainage divide area is located in Carter and Fallon Counties, Montana and Bowman and Slope Counties, North Dakota, USA. Although detailed topographic maps of the Little Beaver Creek-Boxelder Creek drainage divide area have been available for more than fifty years detailed […]
A geomorphic history based on topographic map evidence Abstract: The North Fork-South Fork Grand River drainage divide area is located in northwest South Dakota, USA. Although detailed topographic maps of the North Fork-South Fork Grand River drainage divide area have been available for more than fifty years detailed map evidence has not previously been used […]
A geomorphic history based on topographic map evidence Abstract: The Little Missouri-Moreau River drainage divide area is located in northwest South Dakota, USA. Although detailed topographic maps of the Little Missouri-Moreau River drainage divide area have been available for more than fifty years detailed map evidence has not previously been used to interpret the region’s […]
A geomorphic history based on topographic map evidence Abstract The South Fork Grand River-Moreau River drainage divide area is located in northwest South Dakota, USA. Although detailed topographic maps of the South Fork Grand River-Moreau River drainage divide area have been available for more than fifty years detailed map evidence has not previously been used […]
A geomorphic history based on topographic map evidence Abstract: The eastern Grand River-Moreau River drainage divide area is located in northwest South Dakota, USA. Although detailed topographic maps of the eastern Grand River-Moreau River drainage divide area have been available for more than fifty years detailed map evidence has not previously been used to interpret […]
A geomorphic history based on topographic map evidence Abstract: The Yellowstone River-Little Missouri River drainage divide area discussed here is located in McKenzie County, North Dakota and Richland County, Montana. Although detailed topographic maps of this Yellowstone River-Little Missouri River drainage divide area have been available for more than fifty years detailed map evidence has not […]
A geomorphic history based on topographic map evidence Abstract: The Belle Fourche River-Cheyenne River drainage divide area discussed here is located in Wyoming’s northeast quadrant. Although detailed topographic maps of this Belle Fourche River-Cheyenne River drainage divide area have been available for more than fifty years detailed map evidence has not previously been used to […]
A geomorphic history based on topographic map evidence Abstract: The Yellowstone River-Beaver Creek drainage divide area discussed here is located in eastern Montana and western North Dakota, USA and straddles the Montana-North Dakota state line. Although detailed topographic maps of this Yellowstone River-Beaver Creek drainage divide area have been available for more than fifty years […]
A geomorphic history based on topographic map evidence Abstract: The O’Fallon Creek-Little Beaver Creek drainage divide area discussed here is located in eastern Montana, USA and straddles the Montana-North Dakota state line. Although detailed topographic maps of the O’Fallon Creek-Little Beaver Creek drainage divide area have been available for more than fifty years detailed map […]
A geomorphic history based on topographic map evidence Abstract: The Powder River-O’Fallon Creek drainage divide area discussed here is located in eastern Montana, USA. Although detailed topographic maps of the Powder River-O’Fallon Creek drainage divide area have been available for more than fifty years detailed map evidence has not previously been used to interpret the […]
A geomorphic history based on topographic map evidence Abstract: The Cheyenne River-White River drainage divide area discussed here is located in western South Dakota, USA. Although detailed topographic maps of the Cheyenne River-White River drainage divide area have been available for more than fifty years detailed map evidence has not previously been used to interpret […]
A geomorphic history based on topographic map evidence Abstract: The Bad River-White River drainage divide area discussed here is located in western South Dakota, USA. Although detailed topographic maps of the Bad River-White River drainage divide area have been available for more than fifty years detailed map evidence has not previously been used to interpret […]
Missouri River drainage basin landform origins research project 