Richard F Madole
Dados Biográficos
| ID | 5652645 |
|---|---|
| NOME | Richard F Madole |
| PRENOMES | Richard F |
| SOBRENOME | Madole |
| ASSINATURA | MADOLE R F |
| AFILIAÇÕES | United States Geological Survey |
| ORCID | 0000-0002-9081-570X |
| VERIFICADO | Sim |
| TOTAL DE OBRAS | 6 |
| TOTAL DE CITAÇÕES | 0 |
| TOTAL COMO AUTOR | 6 |
| TOTAL COMO EDITOR | 0 |
| PRIMEIRO ANO DE PUBLICAÇÃO | 1982 |
| ANO MAIS RECENTE DE PUBLICAÇÃO | 2013 |
| ÍNDICE H | 0 |
Constraints on the age of the Great Sand Dunes, Colorado, from subsurface stratigraphy and OSL dates
The age of the Great Sand Dunes has been debated for nearly 150 yr. Seven ages ranging from Miocene to late Holocene have been proposed for them. This paper presents new information–chiefly subsurface stratigraphic data, OSL dates, and geomorphic evidence–that indicates that the Great Sand Dunes began to form in the latter part of the middle Pleistocene. The dunes overlie a thick wedge of piedmont-slope deposits, which in turn overlies sediment o…
Holocene alluvial stratigraphy and response to climate change in the Roaring River valley, Front Range, Colorado, USA
Stratigraphic analyses and radiocarbon geochronology of alluvial deposits exposed along the Roaring River, Colorado, lead to three principal conclusions: (1) the opinion that stream channels in the higher parts of the Front Range are relics of the Pleistocene and nonalluvial under the present climate, as argued in a water-rights trial USA v. Colorado, is untenable, (2) beds of clast-supported gravel alternate in vertical succession with beds of f…
Pleistocene glaciation in the upper Platte River drainage basin, Colorado
Late Holocene Eolian Activity in the Mineralogically Mature Nebraska Sand Hills
The age of sand dunes in the Nebraska Sand Hills has been controversial, with some investigators suggesting a full-glacial age and others suggesting that they were last active in the late Holocene. New accelerator mass spectrometry radiocarbon ages of unaltered bison bones and organic-rich sediments suggest that eolian sand deposition occurred at least twice in the past 3000 14 C yr B.P. in three widely separated localities and as many as three t…
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 inception of Lake Devlin between 23,500 and 21,000 yr B.P. provid…
Surficial geologic map of the Craig 1/2 degree x 1 degrees Quadrangle, Moffat and Routt counties, Colorado
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Surficial geologic map of the Craig 1/2 degree x 1 degrees Quadrangle, Moffat and Routt counties, 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 inception of Lake Devlin between 23,500 and 21,000 yr B.P. provid…
Late Holocene Eolian Activity in the Mineralogically Mature Nebraska Sand Hills
The age of sand dunes in the Nebraska Sand Hills has been controversial, with some investigators suggesting a full-glacial age and others suggesting that they were last active in the late Holocene. New accelerator mass spectrometry radiocarbon ages of unaltered bison bones and organic-rich sediments suggest that eolian sand deposition occurred at least twice in the past 3000 14 C yr B.P. in three widely separated localities and as many as three t…
Pleistocene glaciation in the upper Platte River drainage basin, Colorado
Holocene alluvial stratigraphy and response to climate change in the Roaring River valley, Front Range, Colorado, USA
Stratigraphic analyses and radiocarbon geochronology of alluvial deposits exposed along the Roaring River, Colorado, lead to three principal conclusions: (1) the opinion that stream channels in the higher parts of the Front Range are relics of the Pleistocene and nonalluvial under the present climate, as argued in a water-rights trial USA v. Colorado, is untenable, (2) beds of clast-supported gravel alternate in vertical succession with beds of f…
Constraints on the age of the Great Sand Dunes, Colorado, from subsurface stratigraphy and OSL dates
The age of the Great Sand Dunes has been debated for nearly 150 yr. Seven ages ranging from Miocene to late Holocene have been proposed for them. This paper presents new information–chiefly subsurface stratigraphic data, OSL dates, and geomorphic evidence–that indicates that the Great Sand Dunes began to form in the latter part of the middle Pleistocene. The dunes overlie a thick wedge of piedmont-slope deposits, which in turn overlies sediment o…
Geology and Paleoclimatology Research (5 obras) · Geology (4 obras) · Geomorphology (4 obras) · Glacial period (3 obras) · Holocene (3 obras) · Oceanography (3 obras) · Paleontology (3 obras) · Pleistocene (3 obras) · Aeolian processes and effects (2 obras) · Archaeology and Natural History (2 obras)