A 3-D model of Quaternary terrace development, simulations of terrace stratigraphy and valley asymmetry : a case study for the Allier terraces (Limagne, France)
Alluvialterrace ; Climatic variation ; France ; Heave ; Massif Central ; Model ; Quaternary ; Stratigraphy ; Tectonics ; Terrace
Simulation results suggest that terrace stratigraphy in the study area is mainly the result of internal dynamics and climatic change. Local tectonism contributed to the development of unpaired terraces while the general regional uplift played
a dominant role in determining terrace formation and preservation in general.
Grâce à 8 datations au 14C d'échantillons de bois des dépôts de terrasse et du cône alluvial, identifie deux phases d'érosion Holocène| l'une vers 5400 BP mais avant 1900 BP, l'autre vers 900 BP. - (CB)
Late Quaternary alluvial history of Nowlands Creek, Hunter Valley, NSW
Archeological site ; Australia ; Chronology ; Fluvial processes ; Fluvial terrace ; Holocene ; Northwest Territories ; Pleistocene ; Soil ; Stratigraphy ; Valley
The purpose of this paper is to unravel the alluvial history of Nowlands Creek at the archaeological sites. In particular, the river terraces and their stratigraphy, soils and chronology will be evaluated to separate Pleistocene from Holocene
Desert pavement characteristics on wadi terrace and alluvial fan surfaces : Wadi Al-Bih, U.A.E. and Oman
Alluvial cone ; Arid area ; Geochronology ; Oman ; Quaternary ; Surface deposits ; Terrace ; United Arab Emirates
characteristics are developed on alluvial fan surfaces, whose ages relative to the terrace sequence are suggested by morphostratigraphic relationships. Finally, on the basis of comparisons with other work, some suggestions are made relating to the age
The aim of this work is to establish the characteristics of desert pavement development on three age-related groups of terrace surfaces in Wadi Al-Bih (United Arab Emirates and Oman). A second aim is to assess whether similar age-related pavement
Detailed heavy-minerals analysis allowed to discover the influence of two volcanic Eifel eruptions. Green acicular augite grains are typical for the early Rissian Caberg-Pietersem and end Rissian Eisden-Lanklaar Meuse terraces. - (L'A.).
Alluvial soil chronosequence in the inner coastal plain, Central Virginia
Chronosequence ; Fluvial terrace ; Soil ; Soil properties ; United States ; Virginia ; Weathering
The purpose of this study was to document the chronological sequence of soils present on an extensive series of terrace deposits found along the James River in the Fall Zone of central Virginia. Some of the oldest soils and landforms in the Virginia
Coastal Plain are present here, along with fluvial terraces that correlate with coastal terraces farther east. The AA. clarify soil-geomorphic relations and provide a basis for allostratigraphic subdivision of the inner Coastal Plain.
Cyclic Quaternary alluviation and terracing in a nonglaciated drainage basin on the north flank of the Qinling Shan, Central China
This investigation was designed to map a suite of Quaternary stream terraces that record fluctuating hydrologic regimes in a nonglaciated drainage basin at the southern margin of the Loess Plateau, to date the terraces using the loess/paleosol
The paper deals especially with geologic structure, river terraces and flood plains, alluvial cones and the eolic phenomenas of the Borska nizina (lowland). (MS).
The chronology and stratigraphy of the alluvialterraces of the River Dane Valley, Cheshire, N. W. England
The aim of this paper is to elucidate the chronology of development of a series of fluvial terraces within the valley of the River Dane, Cheshire. Using morphological, sedimentological, and stratigraphic evidence, phases of river activity
Asian part of Russia ; Fluvial terrace ; Geochemistry ; Grain size distribution ; Holocene ; Organic materials ; Palaeo-ecology ; Palynology ; Pedogenesis ; Pollen diagram ; Siberia
Alluvial sod soil sequences from the 9 m terrace in the valley of the River Yenisei were used to reconstruct the paleoecological history and the paleohydrological regime of the river. This paper describes the alluvial soils and establishes
the processes of organic matter transformation in the Holocene alluvial sod soils in relation to changing Holocene environments.
Holocene alluvial chronology of One Tree Creek, southern Alberta, Canada
Alberta ; C 14 dating ; Canada ; Climatic variation ; Fluvial terrace ; Geochronology ; Holocene ; Palaeo-environment ; Palaeohydrology ; Stream
An alluvial chronology for the One Tree Creek basin, a southern tributary of the Red Deer River in the vicinity of the Dinosaur Provincial Park badlands, is reconstructed using terrace and paleochannel remnants and associated radiocarbon dated bones
Alluvium ; Floodplain ; Fluvial terrace ; Geomorphology ; Holocene ; Iowa ; Pleistocene ; Quaternary ; Sedimentology ; Soil ; Stratigraphy ; United States of America ; Valley
The AA. investigated the alluvial stratigraphy, soils, and geomorphology along a section of the lower Little Cedar River to aid in understanding the processes forming this landform region. They used terrace- and floodplain surface height above
the Little Cedar River, soil development, sedimentological characteristics, and stone lines to distinguish alluvial units and landforms. Three Pleistocene surfaces were mapped in the valley, including two terraces and an erosion footslope. Holocene alluvial
units identified include three terraces and the modern floodplain. Elsewhere in the Midwest, these units have been described as the Deforest Formation.
Les terrasses alluviales dans les petites Pyrénées et l'avant pays molassique: les conditions de leur mise en place. in Colloque AFEQ, Paris 1983. (The terraces in the Pyrenean piedmont: conditions of alluvial setting)
Soils and particularly weathering rocks data on alluvial gravels tends to assomption of a non-synchronism for alluvial setting between upper and lower part of the basin. With regard to a lower terrace so called basse plaine, this assumption
Extraction of coastal terraces and shoreline-angle elevations from digital terrain models, Santa Cruz and Anacapa Islands, California
California ; Cartography ; Coastal environment ; Digital elevation model ; Geographical information system ; Island ; Tectonics ; Terrace ; United States of America
landforms such as floodplain, fluvial terraces, pediments, or alluvial fans.
In this paper, geographic information systems (GIS) software is used to map uplifted coastal terraces in a tectonically active area, the Northern Channel Islands of California. The AA. develop a technique using DTMs to map the distribution extent
, and elevation of coastal terraces, and then demonstrate how the results can be used to describe patterns of tectonic deformation. The technique could also be applied to other problems involving coastal terraces, or to studies involving other similarly shaped
Almería ; Arid area ; Calcrete ; Fluvial terrace ; Geochronology ; Quaternary ; Spain ; Th/U dating
Immature and mature calcretes from an alluvialterrace sequence in the Sorbas basin were dated by the U-series isochron technique. By using this technique to date calcretes that have formed during terrace aggradation and at the terrace surface after
terrace abandonment it is possible not only to date the timing of terrace aggradation but also to constrain the age at which the river switched from aggradation to incision. This approach, therefore, constrains the timing of changes in fluvial processes
more reliably than any currently used geochronological procedure and is appropriate for dating terrace sequences in dryland regions worlwide, wherever calcrete horizons are present.
Element partitioning in sediment, soil and vegetation in an alluvialterrace chronosequence, Limagne rift valley, France : a landscape geochemical study
Chronosequence ; Clay mineral ; Fluvial terrace ; France ; Geochemistry ; Leaching ; Massif Central ; Quaternary ; Soil ; Weathering
The vertical and lateral partitioning of major and minor elements among sediments, soils and vegetation was studied on river terraces of different ages in the Massif Central, France. The aim of this resarch was to investigate whether differences
in weathering and soil developmenton terraces of different age are reflected in the chemical composition of specific plants (grasses and oak trees). This tests the Russian landscape geochemical methodology for characterizing the current landscape.
Due to tectonical faults, the terraces of Nisţru river suffered deformations of 20-50 m relative altitude. The paper describes 8 fluvial terraces, generated by the climatic changes of the Pleistocene and by the evolution of the level of the Black
Late Quaternary alluvial stratigraphy of a low-order tributary in central Texas, USA and its response to climate and sediment supply
Alluvium ; Correlation ; Floodplain ; Fluvial terrace ; Palaeoclimate ; Quaternary ; Stratigraphy ; Texas ; United States of America ; Watershed
This paper presents the late Quaternary alluvial stratigraphic study of a low-order tributary in central Texas, using Cowhouse Creek as a case study. The AA. correlate episodes of stream incision and alluviation to climate records and to previous
alluvial stratigraphic work conducted along the Brazos River. The temporal alluvial stratigraphic framework of the bedrock-confined Cowhouse Creek valley is out of phase with the alluvial sequence in the larger Brazos River valley.
Use of multiparameter relative-age methods for age estimation and correlation of alluvial fan surfaces on a desert piedmont, eastern Mojave Desert, California