AMS radiocarbon age of the Upper Mississippi Valley Roxana silt
Accelerator mass spectrometer radiocarbon ages of the Roxana Silt (Loess) along the Upper Mississippi Valley of Wisconsin and Minnesota indicate that loess sedimentation of the Roxana Silt occurred between about 55,000 and 27,000 14C yr B.P
. The bracketing ages for the Upper Mississippi Valley Roxana Silt indicate that the Mississippi River valley was receiving outwash sedimentation between 55,000 and 27,000 14C yr B.P.
Flood ; Fluvial hydrology ; Hydraulic works ; Mississippi ; Statistics ; Stream ; Twentieth Century ; United States of America
This study compared 4 measures of river hydrology at the beginning (1910-1930) and at the end of the 20th century (1980-2000). River-stage data were statistically analyzed from 15 equidistant gauges along the main stem of the Mississippi River
An approximation of the sediment budget of the lower Mississippi River prior to major human modification
Bilan sédimentaire ; Capacité de charge ; Cours d'eau ; Etats-Unis ; Fluviatile ; Géographie historique ; Mississippi ; Paléohydrologie ; Transport sédimentaire
Carrying capacity ; Fluvial processes ; Historical geography ; Mississippi ; Palaeohydrology ; Sediment budget ; Sediment transport ; Stream ; United States
Components of the budget are derived from historical data including Mississippi River Commission hydrographic survey maps for the period from 1877 to 1924. The study provides a first approximation of the net change in the sediment regime
of the river upon which future evaluations of these modifications can be made. The study area includes the entire Lower Mississippi River extending 1 700 km (river length in 1880) from Cairo, Illinois to the Gulf of Mexico.
Evidence at Lomax, Illinois, for Mid-Wisconsin (≃40,000 yr B.P.). Position of the Des Moines Lobe and for diversion of the Mississippi River by the Lake Michigan Lobe (20,350 yr B.P.)
Glacial lake ; Illinois ; Mississippi ; Multivariate analysis ; Palaeo-environment ; Palaeoclimate ; Palaeohydrology ; Pleistocene ; Quaternary ; Stream ; United States of America
An abrupt change in environment from a wetland to a deeper slackwater lake at 20,345 yr B.P. occurred in a second-order valley tributary to the Mississippi River near Lomax, Illinois. The age of this shift is associated with the overflow of glacial
Lake Milan and diversion of the Mississippi River from the Princeton Valley (Rock Island to Peoria) to its present course (Rock Island to St. Louis). In this paper, the paleohydrology and paleoclimatology at Lomax is interpreted based on evidence from
Erosion ; Flood ; Floodplain ; Grain size distribution ; Illinois ; Mississippi ; Missouri ; Sediment transport ; Sedimentation ; Spatial variation ; Stream ; Suspended load ; United States of America
This paper elaborates on the pattern of overbank sedimentation associated with the point failure of artificial levees during the summer 1993 flood in the upper Mississippi River basin. These failures inundated clearly delineated, 16 to 179 km2
in the upper Mississippi River valley to the summer 1993 flood by comparing the response of the floodplain in the study reach to that of the floodplain reaches further downriver.
Gravel ; Ground survey ; Hydrodynamics ; Methodology ; Mississippi ; River bed ; Roughness ; Sediment load ; Stream ; United States
The A. has analysed bed load transport rates during rising and falling stages of two small streams (Godwin Creek Research Watershed, Nothern Mississippi, USA)
Atmospheric circulation ; Exceptional event ; Flood ; Inundation ; Iowa ; Minnesota ; Mississippi ; Natural hazards ; Precipitation ; Stream ; United States of America ; Wisconsin
Unique weather conditions that combined to produce disastrous flooding across the upper and middle Mississippi Valleys in summer 1993 are described. - (DWG)
The economic geography of regional festivals: beer drinking and small town Mississippi river festivals
Description of small-town annual festivals in the upper Mississippi valley, highlighting the differnetial attitudes between Minnesota (settled mainly by Scandinavians) and Wisconsin (settled mainly by Germans) in their laws toward alcoholic
This paper reports on a radiocarbon-dated fossil pecan encountered during archaeological and geological study of the Mississipi River valley between Burlington and Muscatine, Iowa, and discusses the fossil pollen record to clarify the Holocene
LA GEOPHAGIE EST ENCORE PRATIQUEE PAR DES FEMMES ET DES ENFANTS NOIRS DANS LE COMTE DE HOLMES (MISSISSIPI). CELA SEMBLE ETRE UNE TRADITION CULTURELLE VENUE AVEC LES ESCLAVES AFRICAINS. LA CONSOMMATION MOYENNE JOURNALIERE EST DE L'ORDRE DE 50 GRAMMES
Aminostratigraphic correlation and geochronology of two Quaternary loess localities, central Mississippi Valley
Amino acid epimeric (aILe/ILe) values from terrestrial molluscs are used to define and correlate three aminozones in loess sequences exposed across the central Mississippi Valley, in Arkansas and Tennessee. The AA. comment on age implications
of these data to existing Quaternary stratigraphic frameworks in the northern and southern Mississippi Valley.