- Abstract
- Affiliation
- All
- Authors
- Book Series
- DOI
- EISBN
- EISSN
- Full Text
- GeoRef ID
- ISBN
- ISSN
- Issue
- Keyword (GeoRef Descriptor)
- Meeting Information
- Report #
- Title
- Volume
- Abstract
- Affiliation
- All
- Authors
- Book Series
- DOI
- EISBN
- EISSN
- Full Text
- GeoRef ID
- ISBN
- ISSN
- Issue
- Keyword (GeoRef Descriptor)
- Meeting Information
- Report #
- Title
- Volume
- Abstract
- Affiliation
- All
- Authors
- Book Series
- DOI
- EISBN
- EISSN
- Full Text
- GeoRef ID
- ISBN
- ISSN
- Issue
- Keyword (GeoRef Descriptor)
- Meeting Information
- Report #
- Title
- Volume
- Abstract
- Affiliation
- All
- Authors
- Book Series
- DOI
- EISBN
- EISSN
- Full Text
- GeoRef ID
- ISBN
- ISSN
- Issue
- Keyword (GeoRef Descriptor)
- Meeting Information
- Report #
- Title
- Volume
- Abstract
- Affiliation
- All
- Authors
- Book Series
- DOI
- EISBN
- EISSN
- Full Text
- GeoRef ID
- ISBN
- ISSN
- Issue
- Keyword (GeoRef Descriptor)
- Meeting Information
- Report #
- Title
- Volume
- Abstract
- Affiliation
- All
- Authors
- Book Series
- DOI
- EISBN
- EISSN
- Full Text
- GeoRef ID
- ISBN
- ISSN
- Issue
- Keyword (GeoRef Descriptor)
- Meeting Information
- Report #
- Title
- Volume
NARROW
GeoRef Subject
-
all geography including DSDP/ODP Sites and Legs
-
North America
-
Great Plains
-
Northern Great Plains (1)
-
-
Mississippi River basin (1)
-
Western Interior
-
Western Interior Seaway (1)
-
-
Williston Basin (3)
-
-
Platte River (1)
-
Sacramento River (1)
-
United States
-
California
-
Butte County California (1)
-
Colusa County California (1)
-
Glenn County California (1)
-
-
Iowa
-
Clinton County Iowa (1)
-
Pottawattamie County Iowa (1)
-
-
Kansas
-
Kansas River (2)
-
Logan County Kansas (1)
-
-
Mississippi (1)
-
Mississippi River (5)
-
Missouri
-
Jackson County Missouri (1)
-
Kansas City Missouri (1)
-
Saint Charles County Missouri (1)
-
Saint Louis County Missouri
-
Saint Louis Missouri (1)
-
-
-
Missouri River (28)
-
Missouri River valley (1)
-
Montana
-
Dawson County Montana (1)
-
Garfield County Montana (1)
-
McCone County Montana (1)
-
-
Nebraska
-
Cedar County Nebraska (1)
-
Dixon County Nebraska (1)
-
Douglas County Nebraska (1)
-
-
North Dakota
-
Mercer County North Dakota (1)
-
-
Ohio
-
Hamilton County Ohio
-
Cincinnati Ohio (1)
-
-
-
Ohio River (1)
-
Powder River basin (1)
-
South Dakota
-
Brule County South Dakota (1)
-
Clay County South Dakota (1)
-
Union County South Dakota (1)
-
Yankton County South Dakota (1)
-
-
Yellowstone River (1)
-
-
White River (1)
-
-
commodities
-
energy sources (1)
-
-
elements, isotopes
-
carbon
-
C-14 (1)
-
-
isotope ratios (1)
-
isotopes
-
radioactive isotopes
-
C-14 (1)
-
Cs-137 (1)
-
-
stable isotopes
-
Nd-144/Nd-143 (1)
-
Sr-87/Sr-86 (1)
-
-
-
metals
-
alkali metals
-
cesium
-
Cs-137 (1)
-
-
-
alkaline earth metals
-
strontium
-
Sr-87/Sr-86 (1)
-
-
-
rare earths
-
neodymium
-
Nd-144/Nd-143 (1)
-
-
-
-
-
fossils
-
Chordata
-
Vertebrata
-
Tetrapoda
-
Reptilia
-
Diapsida
-
Archosauria
-
dinosaurs
-
Saurischia
-
Theropoda
-
Coelurosauria
-
Tyrannosauridae
-
Tyrannosaurus
-
Tyrannosaurus rex (1)
-
-
-
-
-
-
-
-
-
-
-
-
-
Invertebrata
-
Arthropoda
-
Mandibulata
-
Crustacea
-
Malacostraca (1)
-
-
-
-
Mollusca (1)
-
-
Plantae (1)
-
-
geochronology methods
-
optically stimulated luminescence (1)
-
paleomagnetism (1)
-
U/Pb (1)
-
-
geologic age
-
Cenozoic
-
Quaternary
-
Holocene
-
lower Holocene (1)
-
middle Holocene (1)
-
upper Holocene (1)
-
-
Pleistocene
-
Loveland Loess (1)
-
upper Pleistocene (1)
-
-
-
Tertiary
-
Paleogene
-
Eocene
-
Golden Valley Formation (1)
-
-
Paleocene
-
lower Paleocene
-
K-T boundary (1)
-
-
Ravenscrag Formation (1)
-
-
Wasatch Formation (1)
-
-
-
-
Mesozoic
-
Cretaceous
-
Lower Cretaceous (1)
-
Upper Cretaceous
-
Fox Hills Formation (1)
-
Hell Creek Formation (2)
-
K-T boundary (1)
-
Lance Formation (1)
-
Niobrara Formation (2)
-
Pierre Shale (4)
-
-
-
-
MIS 5 (1)
-
Paleozoic
-
Carboniferous
-
Pennsylvanian
-
Upper Pennsylvanian (1)
-
-
-
-
-
minerals
-
carbonates
-
calcite (1)
-
-
silicates
-
framework silicates
-
silica minerals
-
quartz (1)
-
-
-
orthosilicates
-
nesosilicates
-
zircon group
-
zircon (1)
-
-
-
-
-
sulfates
-
gypsum (1)
-
jarosite (1)
-
-
-
Primary terms
-
absolute age (3)
-
asteroids (1)
-
carbon
-
C-14 (1)
-
-
Cenozoic
-
Quaternary
-
Holocene
-
lower Holocene (1)
-
middle Holocene (1)
-
upper Holocene (1)
-
-
Pleistocene
-
Loveland Loess (1)
-
upper Pleistocene (1)
-
-
-
Tertiary
-
Paleogene
-
Eocene
-
Golden Valley Formation (1)
-
-
Paleocene
-
lower Paleocene
-
K-T boundary (1)
-
-
Ravenscrag Formation (1)
-
-
Wasatch Formation (1)
-
-
-
-
Chordata
-
Vertebrata
-
Tetrapoda
-
Reptilia
-
Diapsida
-
Archosauria
-
dinosaurs
-
Saurischia
-
Theropoda
-
Coelurosauria
-
Tyrannosauridae
-
Tyrannosaurus
-
Tyrannosaurus rex (1)
-
-
-
-
-
-
-
-
-
-
-
-
-
clay mineralogy (1)
-
climate change (1)
-
conservation (1)
-
dams (3)
-
deformation (1)
-
diagenesis (2)
-
energy sources (1)
-
engineering geology (2)
-
epeirogeny (1)
-
faults (2)
-
folds (2)
-
fractures (2)
-
geochronology (1)
-
geomorphology (5)
-
glacial geology (3)
-
hydrology (5)
-
Invertebrata
-
Arthropoda
-
Mandibulata
-
Crustacea
-
Malacostraca (1)
-
-
-
-
Mollusca (1)
-
-
isotopes
-
radioactive isotopes
-
C-14 (1)
-
Cs-137 (1)
-
-
stable isotopes
-
Nd-144/Nd-143 (1)
-
Sr-87/Sr-86 (1)
-
-
-
lineation (1)
-
maps (1)
-
Mesozoic
-
Cretaceous
-
Lower Cretaceous (1)
-
Upper Cretaceous
-
Fox Hills Formation (1)
-
Hell Creek Formation (2)
-
K-T boundary (1)
-
Lance Formation (1)
-
Niobrara Formation (2)
-
Pierre Shale (4)
-
-
-
-
metals
-
alkali metals
-
cesium
-
Cs-137 (1)
-
-
-
alkaline earth metals
-
strontium
-
Sr-87/Sr-86 (1)
-
-
-
rare earths
-
neodymium
-
Nd-144/Nd-143 (1)
-
-
-
-
North America
-
Great Plains
-
Northern Great Plains (1)
-
-
Mississippi River basin (1)
-
Western Interior
-
Western Interior Seaway (1)
-
-
Williston Basin (3)
-
-
paleoclimatology (1)
-
paleogeography (1)
-
paleomagnetism (1)
-
paleontology (1)
-
Paleozoic
-
Carboniferous
-
Pennsylvanian
-
Upper Pennsylvanian (1)
-
-
-
-
Plantae (1)
-
remote sensing (1)
-
sedimentary rocks
-
clastic rocks
-
mudstone (2)
-
sandstone (2)
-
-
-
sedimentary structures
-
biogenic structures
-
banks (1)
-
-
planar bedding structures
-
cross-bedding (1)
-
-
-
sedimentation (4)
-
sediments
-
clastic sediments
-
alluvium (1)
-
clay (1)
-
colluvium (2)
-
loess (1)
-
sand (2)
-
silt (1)
-
till (3)
-
-
-
shorelines (1)
-
slope stability (1)
-
stratigraphy (2)
-
structural analysis (1)
-
tectonics (2)
-
underground installations (1)
-
United States
-
California
-
Butte County California (1)
-
Colusa County California (1)
-
Glenn County California (1)
-
-
Iowa
-
Clinton County Iowa (1)
-
Pottawattamie County Iowa (1)
-
-
Kansas
-
Kansas River (2)
-
Logan County Kansas (1)
-
-
Mississippi (1)
-
Mississippi River (5)
-
Missouri
-
Jackson County Missouri (1)
-
Kansas City Missouri (1)
-
Saint Charles County Missouri (1)
-
Saint Louis County Missouri
-
Saint Louis Missouri (1)
-
-
-
Missouri River (28)
-
Missouri River valley (1)
-
Montana
-
Dawson County Montana (1)
-
Garfield County Montana (1)
-
McCone County Montana (1)
-
-
Nebraska
-
Cedar County Nebraska (1)
-
Dixon County Nebraska (1)
-
Douglas County Nebraska (1)
-
-
North Dakota
-
Mercer County North Dakota (1)
-
-
Ohio
-
Hamilton County Ohio
-
Cincinnati Ohio (1)
-
-
-
Ohio River (1)
-
Powder River basin (1)
-
South Dakota
-
Brule County South Dakota (1)
-
Clay County South Dakota (1)
-
Union County South Dakota (1)
-
Yankton County South Dakota (1)
-
-
Yellowstone River (1)
-
-
waterways (1)
-
weathering (1)
-
-
rock formations
-
Fort Union Formation (1)
-
-
sedimentary rocks
-
sedimentary rocks
-
clastic rocks
-
mudstone (2)
-
sandstone (2)
-
-
-
-
sedimentary structures
-
channels (2)
-
sedimentary structures
-
biogenic structures
-
banks (1)
-
-
planar bedding structures
-
cross-bedding (1)
-
-
-
striations (1)
-
-
sediments
-
sediments
-
clastic sediments
-
alluvium (1)
-
clay (1)
-
colluvium (2)
-
loess (1)
-
sand (2)
-
silt (1)
-
till (3)
-
-
-
-
soils
-
paleosols (1)
-
Missouri River
Anthropogenic impact on sediment transfer in the upper Missouri River catchment detected by detrital zircon analysis
The ups and downs of the Missouri River from Pleistocene to present: Impact of climatic change and forebulge migration on river profiles, river course, and valley fill complexity
The case of the braided river that meandered: Bar assemblages as a mechanism for meandering along the pervasively braided Missouri River, USA
Elevation gaps in fluvial sandbar deposition and their implications for paleodepth estimation
Radiogenic fingerprinting reveals anthropogenic and buffering controls on sediment dynamics of the Mississippi River system
Strata-bound vein array in the basal Pierre Shale, Lake Francis Case, South Dakota, U.S.A.
Distributed normal faults in the Niobrara Chalk and Pierre Shale of the central Great Plains of the United States
Pleistocene geology and classic type sections along the Missouri River valley in western Iowa
Abstract This field guide describes four exposures of glacigenic sediment along the Missouri River bluffs east of Omaha, Nebraska. Field trip stops include Loveland, Iowa, which is the type section of the Loveland Silt and Pisgah Formation (Illinoian and Early Wisconsinan loess) and Crescent Quarry, which exposes the type Nebraskan till. Additionally we will examine core samples of the Kennard Formation, a new stratigraphic unit consisting of multiple pre-Illinoian loesses. We also present recent results on the pre-Illinoian till stratigraphy in the Missouri River valley region. A variety of evidence indicates that the present location of the Missouri River valley originated sometime between deposition of the youngest (pre-Illinoian) till and the (Illinoian) Loveland Silt. The spatial distribution of the youngest pre-Illinoian till further suggests that this reach of the Missouri River (along the Iowa-Nebraska border) was established as an ice-marginal stream along the western terminus of the last pre-Illinoian glaciation.
From Tyrannosaurus rex to asteroid impact: Early studies (1901–1980) of the Hell Creek Formation in its type area
Over a century has passed since 1901 when W.T. Hornaday showed a fragment of a horn of Triceratops found in the valley of Hell Creek to H.F. Osborn at the American Museum of Natural History. The following year Osborn's assistant, Barnum Brown, was dispatched to eastern Montana and began investigations of its geology and paleontology. By 1929, Brown had published a geological analysis of the rocks exposed in the southern tributaries of the Missouri River, named the Hell Creek Formation, and published studies of some of the dinosaurs discovered there. Parts of his collections of fossil mollusks, plants, and vertebrates contributed to research by others, particularly members of the U.S. Geological Survey. From 1930 to 1959, fieldwork was slowed by the Great Depression and World War II, but both the continuing search for coal, oil, and gas as well as collections of fossils made during construction of Fort Peck Dam set the stage for later research. Field parties from several museums collected dinosaurian skeletons in the area between 1960 and 1971. In 1962, concentrations of microvertebrates were rediscovered in McCone County by field parties from the University of Minnesota. Ten years later, field parties from the University of California Museum of Paleontology began collecting microvertebrates from exposures in the valley of Hell Creek and its tributaries. The research based on this field research provided detailed geological and paleontological analyses of the Hell Creek Formation and its biota. In turn, these contributed to studies of evolutionary patterns and the processes that produced the changes in the terrestrial biota across the Cretaceous-Paleogene boundary.
In 1907, Barnum Brown named the Hell Creek beds (Formation) for the strata exposed in the Hell Creek Valley and other downstream tributaries of the Missouri River. In the absence of a stratotype section, a lectostratotype is herein proposed for the Hell Creek Formation based on 84.2-m-thick exposures at Flag Butte (local name) in Ried Coulee (archaic use; East Fork of Hell Creek) and East Ried Coulee, tributaries of Hell Creek, Garfield County, Montana (sec. 29, T. 21 N., R. 38 W., NAD27 CONUS; base 47.55931°N, 106.88111°W; top 47.55533°N, 106.86810°W). The formation is underlain with general conformity by sandstone beds of the Fox Hills Formation (as characteristically known, the Colgate Member is absent) and is for the most part conformably overlain locally by the Tullock Member of the Fort Union Formation. The upper contact at Flag Butte is demarcated at the base of the IrZ lignite bed (above an iridium anomaly). The boundary has been demonstrated to be somewhat unconformable in areas to the west. The IrZ bed is also missing at Bug Creek in McCone County. In its type section, the Hell Creek Formation is subdivided (simply and informally) into Ried Coulee (lower Hell Creek), East Ried Coulee (middle Hell Creek), and Flag Butte (upper Hell Creek) units, each containing a sandstone and a mudstone lithofacies. Formational thickness varies with local depositional and erosional history of various coastal-deltaic environments across the Williston Basin and a trend of overall thinning to the east and northeast.
A mechanism of chute cutoff along large meandering rivers with uniform floodplain topography
Sediment regime constraints on river restoration—An example from the Lower Missouri River
Dammed rivers are subject to changes in their flow, water-quality, and sediment regimes. Each of these changes may contribute to diminished aquatic habitat quality and quantity. Of the three factors, an altered sediment regime is a particularly unyielding challenge on many dammed rivers. The magnitude of the challenge is illustrated on the Lower Missouri River, where the largest water storage system in North America has decreased the downriver suspended-sediment load to 0.2%–17% of pre-dam loads. In response to the altered sediment regime, the Lower Missouri River channel has incised as much as 3.5 m just downstream of Gavins Point Dam, although the bed has been stable to slightly aggrading at other locations farther downstream. Effects of channel engineering and commercial dredging are superimposed on the broad-scale adjustments to the altered sediment regime. The altered sediment regime and geomorphic adjustments constrain restoration and management opportunities. Incision and aggradation limit some objectives of flow-regime management: In incising river segments, ecologically desirable reconnection of the floodplain requires discharges that are beyond operational limits, whereas in aggrading river segments, small spring pulses may inundate or saturate low-lying farmlands. Lack of sediment in the incising river segment downstream of Gavins Point Dam also limits sustainable restoration of sand-bar habitat for bird species listed under the Endangered Species Act. Creation of new shallow-water habitat for native fishes involves taking sediment out of floodplain storage and reintroducing most or all of it to the river, raising concerns about increased sediment, nutrient, and contaminant loads. Calculations indicate that effects of individual restoration projects are small relative to background loads, but cumulative effects may depend on sequence and locations of projects. An understanding of current and historical sediment fluxes, and how they vary along the river, provides a quantitative basis for defining management constraints and identifying opportunities.
Enhanced stage and stage variability on the lower Missouri River benchmarked by Lewis and Clark
Technical Note: Rehabilitation of a Biofouled Pressure-Relief Well Network, Garrison Dam, North Dakota
Flood enhancement through flood control
Geological contexts of the early and middle Holocene archaeological record in North Dakota and adjoining areas of the Northern Plains
Literature pertaining to the archaeological geology of North Dakota and adjacent areas is reviewed to identify geological contexts in which early and middle Holocene sediments, containing Paleo-Indian through Early Archaic sites, are most likely to be found. In upland contexts, early and middle Holocene sediments have been encountered in thick eolian deposits along the Missouri River, and are locally preserved in settings conducive to eolian and colluvial sedimentation, including topographic lows and the lee sides of bluffs and knolls. Most uplands, even along the Missouri Trench, have been dominated by erosion, and most eolian/colluvial deposits are late Holocene in age. Voiding of early and middle Holocene alluvium appears to have occurred in low order and steeply graded valleys like those of the Little Missouri Badlands. In mainstem valleys, early and middle Holocene sediments are often voided or deeply buried, but are preserved in alluvial fans. Shallowly buried early to middle Holocene alluvium may be most extensive in the lower to middle reaches of tributaries to the major rivers.
1993 Student Professional Paper: Graduate Division: Processes and Rates of Shoreline Bluff Recession at Lake Sharpe, South Dakota
The eastern margin of the Western Interior Seaway was located on the stable North American craton. Epeirogenic tectonism in continental lithosphere was sufficient, however, to influence sedimentation and generate geologic structures in south-central South Dakota. Paleotectonic and post-Cretaceous tectonism affected lithosphere blocks that are bounded by fault zones in the Precambrian basement and are marked at the surface by linear features and lineament zones visible on satellite images. Regional blocks outlined by lineament zones reflect the eastern side of a Proterozoic convergent margin, have expression on surface and subsurface cross sections, and subdivide the southern margin of the Williston basin into a mosaic of lithosphere blocks. Individual linear features within the regional blocks and lineament zones further subdivide south-central South Dakota into a series of broad, anticlinal blocks separated by narrow synclinal troughs and linear features. Paleotectonic movements on the regional blocks are documented by thickness and lithologic variation in Cretaceous depositional cycles found in the Dakota Sandstone through the Pierre Shale. Outcrops along the Missouri River expose thickness and facies changes in the upper Niobrara Formation and lower Pierre Shale across specific linear features that separate local blocks. In particular, the Crow Creek Member of the Pierre Shale has differences in texture and composition that correspond to differences in block position. Postdepositional tectonism included vertical displacements that produced the characteristic pattern of broad anticlinal blocks separated by narrow synclines and linear features. In addition, assemblages of folds, faults, and joints provide evidence for horizontal, strike-slip displacements. Along the Missouri River near Chamberlain, small faults parallel a linear feature trending N35°W and folds and extensional joints lie oblique to the linear feature, suggesting left-lateral displacement. Farther south along the river near Platte, a subtle monocline is found in lower units of the Pierre Shale. Small faults trending east-west generally parallel the monocline axis, which is marked by a linear feature. Joint patterns have modes oblique to the linear feature and are interpreted to show right-lateral displacement. The post-depositional tectonism is possibly post-Miocene because structural patterns in Cretaceous rocks seem to extend upward into Miocene-age units. The identification of lithosphere blocks in south-central South Dakota could influence construction projects and exploration for natural resources. Perhaps more important, the area serves to characterize a structural style which is common in continental lithosphere. That structural style consists of broad blocks separated by zones of basement weakness; blocks are continuously reactivated as they are jostled by asthenosphere flow.