Richard F Madole (Former Employee)
Science and Products
Filter Total Items: 27
Spatial and temporal patterns of late quaternary eolian deposition, Eastern Colorado, U.S.A Spatial and temporal patterns of late quaternary eolian deposition, Eastern Colorado, U.S.A
Eolian sediment covers about 60% of Colorado east of the Rocky Mountains; about 30% of the sediment is sand and 70% is loess. Initially, flood plains were the principal sources of eolian sediment, but during the Holocene, dunes formed from older eolian sand and alluvium on uplands. Since latest Pleistocene time, dominant dune-forming winds have been northwesterly in the northern part of...
Authors
Richard F. Madole
Spatial and temporal patterns of late Quaternary eolian deposition, eastern Colorado, USA Spatial and temporal patterns of late Quaternary eolian deposition, eastern Colorado, USA
Eolian sediment covers about 60% of Colorado east of the Rocky Mountains; about 30% of the sediment is sand and 70% is loess. Initially, flood plains were the principal sources of eolian sediment, but during the Holocene, dunes formed from older eolian sand and alluvium on uplands. Since latest Pleistocene time, dominant dune-forming winds have been northwesterly in the northern part of...
Authors
R.F. Madole
Stratigraphic evidence of desertification in the west-central Great Plains within the past 1000 yr Stratigraphic evidence of desertification in the west-central Great Plains within the past 1000 yr
Stratigraphic and geomorphic relations, archeological data, and eight radiocarbon ages at five widely scattered localities in northeastern Colorado indicate that eolian sand was mobilized over broad areas within the past 1000 yr. The mobilization began after 1 ka, was episodic, and ended at some as yet undetermined time prior to the latter part of the nineteenth century. Given that...
Authors
R.F. Madole
Quaternary history of some southern and central Rocky Mountain basins Quaternary history of some southern and central Rocky Mountain basins
This chapter summarizes the current state of late Cenozoic stratigraphic knowledge in some Rocky Mountain basins (here defined as the structurally low portions of major drainage basins) that have been studied in detail since Scott’s (1965) summary on the nonglacial history of the southern and middle Rocky Mountains. The Quaternary history of few of these basins has been studied as...
Authors
Marith C. Reheis, Robert C. Palmquist, S.S. Agard, Cheryl Jaworowski, Brainerd Mears, Richard F. Madole, Alan R. Nelson, Gerald Osborn
Stratigraphic evidence of Holocene faulting in the mid-continent: The Meers fault, southwestern Oklahoma Stratigraphic evidence of Holocene faulting in the mid-continent: The Meers fault, southwestern Oklahoma
Stratigraphic relations and ten 14C ages show that movement occurred on the Meers fault in late Holocene time. Movement on the fault postdates the Browns Creek Alluvium, which began to be deposited between 14,000 and 13,000 yr B.P., and predates the East Cache Alluvium, which was deposited between 800 and 100 yr B.P. Surface warping along the fault led to local stream incision on the...
Authors
Richard F. Madole
Rocky Mountains Rocky Mountains
The Rocky Mountain region is one of the most topographically distinct and impressive parts of North America. The Rocky Mountains rise abruptly above the bordering regions, particularly on the east and northeast where they are flanked by plains, less so on the west and southwest where they are bounded by high plateaus. The Rocky Mountains comprise more than 100 individually named ranges...
Authors
Richard F. Madole, W.C. Bradley, D.S. Loewenherz, D.F. Ritter, N.W. Rutter, C.E. Thorn
Lake Devlin and Pinedale glacial history, front range, Colorado Lake Devlin and Pinedale glacial history, front range, Colorado
Glacial Lake Devlin was an ice-margin lake that formed during Pinedale time when the North Boulder Creek valley glacier blocked the mouth of a tributary near the downvalley limit of glaciation. The lake was about 2 km long and as much as 60 m deep, and was fed by meltwater from small valley glaciers. It accumulated sediment, apparently without interruption, for about 10,000 yr. The...
Authors
R.F. Madole
Geology of the Pontiac Pit archeological site, Rocky Mountain National Park, Colorado Geology of the Pontiac Pit archeological site, Rocky Mountain National Park, Colorado
No abstract available.
Authors
R.F. Madole
Science and Products
Filter Total Items: 27
Spatial and temporal patterns of late quaternary eolian deposition, Eastern Colorado, U.S.A Spatial and temporal patterns of late quaternary eolian deposition, Eastern Colorado, U.S.A
Eolian sediment covers about 60% of Colorado east of the Rocky Mountains; about 30% of the sediment is sand and 70% is loess. Initially, flood plains were the principal sources of eolian sediment, but during the Holocene, dunes formed from older eolian sand and alluvium on uplands. Since latest Pleistocene time, dominant dune-forming winds have been northwesterly in the northern part of...
Authors
Richard F. Madole
Spatial and temporal patterns of late Quaternary eolian deposition, eastern Colorado, USA Spatial and temporal patterns of late Quaternary eolian deposition, eastern Colorado, USA
Eolian sediment covers about 60% of Colorado east of the Rocky Mountains; about 30% of the sediment is sand and 70% is loess. Initially, flood plains were the principal sources of eolian sediment, but during the Holocene, dunes formed from older eolian sand and alluvium on uplands. Since latest Pleistocene time, dominant dune-forming winds have been northwesterly in the northern part of...
Authors
R.F. Madole
Stratigraphic evidence of desertification in the west-central Great Plains within the past 1000 yr Stratigraphic evidence of desertification in the west-central Great Plains within the past 1000 yr
Stratigraphic and geomorphic relations, archeological data, and eight radiocarbon ages at five widely scattered localities in northeastern Colorado indicate that eolian sand was mobilized over broad areas within the past 1000 yr. The mobilization began after 1 ka, was episodic, and ended at some as yet undetermined time prior to the latter part of the nineteenth century. Given that...
Authors
R.F. Madole
Quaternary history of some southern and central Rocky Mountain basins Quaternary history of some southern and central Rocky Mountain basins
This chapter summarizes the current state of late Cenozoic stratigraphic knowledge in some Rocky Mountain basins (here defined as the structurally low portions of major drainage basins) that have been studied in detail since Scott’s (1965) summary on the nonglacial history of the southern and middle Rocky Mountains. The Quaternary history of few of these basins has been studied as...
Authors
Marith C. Reheis, Robert C. Palmquist, S.S. Agard, Cheryl Jaworowski, Brainerd Mears, Richard F. Madole, Alan R. Nelson, Gerald Osborn
Stratigraphic evidence of Holocene faulting in the mid-continent: The Meers fault, southwestern Oklahoma Stratigraphic evidence of Holocene faulting in the mid-continent: The Meers fault, southwestern Oklahoma
Stratigraphic relations and ten 14C ages show that movement occurred on the Meers fault in late Holocene time. Movement on the fault postdates the Browns Creek Alluvium, which began to be deposited between 14,000 and 13,000 yr B.P., and predates the East Cache Alluvium, which was deposited between 800 and 100 yr B.P. Surface warping along the fault led to local stream incision on the...
Authors
Richard F. Madole
Rocky Mountains Rocky Mountains
The Rocky Mountain region is one of the most topographically distinct and impressive parts of North America. The Rocky Mountains rise abruptly above the bordering regions, particularly on the east and northeast where they are flanked by plains, less so on the west and southwest where they are bounded by high plateaus. The Rocky Mountains comprise more than 100 individually named ranges...
Authors
Richard F. Madole, W.C. Bradley, D.S. Loewenherz, D.F. Ritter, N.W. Rutter, C.E. Thorn
Lake Devlin and Pinedale glacial history, front range, Colorado Lake Devlin and Pinedale glacial history, front range, Colorado
Glacial Lake Devlin was an ice-margin lake that formed during Pinedale time when the North Boulder Creek valley glacier blocked the mouth of a tributary near the downvalley limit of glaciation. The lake was about 2 km long and as much as 60 m deep, and was fed by meltwater from small valley glaciers. It accumulated sediment, apparently without interruption, for about 10,000 yr. The...
Authors
R.F. Madole
Geology of the Pontiac Pit archeological site, Rocky Mountain National Park, Colorado Geology of the Pontiac Pit archeological site, Rocky Mountain National Park, Colorado
No abstract available.
Authors
R.F. Madole