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Showing 1 to 20 of 72 for “"LOESS"”.
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Earth to Earth : reconciling earthen dwellings with eroding loess landform : the case of Loess Plateau in China
… of the earth's land surface area is covered with loess deposits, a type of highly erodible soil consisting of less than 20% clay. Loess soil has topped eroding hills and valleys and supported an earthen construction tradition in loess landform territories. The Loess Plateau in China has been …
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Geochemistry of Reworked Loess and Red Clays in Missouri Caves
… major rivers, believed to be reworked glacial loess; and (2) oddly distributed, fine-grained red clays of uncertain significance first popularized by J H Bretz over 60 years ago. Chemical data from cave sediments and presumably related surface materials, loess and "residuum," were combined with …
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Applications of Geopolymer in Civil Engineering: Feasibility Study of Loess Stabilization and Waste Concrete Recycling
… of applying the fly ash based geopolymer in the loess stabilization and waste concrete recycling. With the integration of composition and microstructure, a four-tier conceptual microstructure model is proposed to elucidate the origin of loess collapsibility. Based on the understanding of the …
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Stratigraphy, magnetic susceptibility, and mineralogy of loess-paleosol sequences in southwestern Illinois and eastern Missouri
… Silt MS zones are particularly striking in loess proximal to the Illinois (Ancient Mississippi) Valley because of source area shifts caused by Mississippi River diversion at about 20.5 ka. MS zones are less pronounced along the Mississippi Valley south of St. Louis. Alteration of magnetite …
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Luminescence based chronologies on Late Pleistocene loess-palaeosol sequences: an applied-methodological study on quartz separates
… the driving rationales in Quaternary research. Loess records have been found to be valuable archives for reconstructing palaeoenvironmental conditions. However, once identified, characterised and classified by fieldwork, the stratigraphic significance of such records has to be revealed by …
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The Naming, Identification, and Protection of Place in the Loess Hills of the Middle Missouri Valley
Definitions of the extent of the Loess Hills of the Missouri River valley have become smaller over the last century. The reduced extent of the Hills, as represented in both promotional and scientific literature, no longer accurately reflects the physical landform or public perception of its size. …
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Pedogenic carbonates in loess formation rates, formation conditions and source apportionment assessed by isotopes and molecular proxies
… pedogenic carbonates (calcified roots), from a loess-paleosol sequence for paleoenvironmental studies. In loess as a common soil parent material, initial CaCO3 recrystallization rates were successfully determined with the 14C isotopic exchange approach by exposing loess to artificially labeled …
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An investigation into the volume change characteristics of loess like soil in Mount Moorosi Village in Lesotho
… the possible volume change of the underlaying loess like soil. This soil has caused a disastrous failure to brittle civil engineering structures in various parts of the world. Its behaviour is attributed to sand and silt particles bonded by minerals, which become active upon saturation and …
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Late Quaternary landscape evolution and environmental change in Charwell Basin, South Island, New Zealand
… Charwell River, and a series of late Quaternary loess-mantled alluvial terraces and terrace remnants that have been uplifted and translocated from their sediment source due to strike-slip motion along the Hope Fault which bounds the basin to its immediate north. The aim of this study was to …
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An investigation into the use of plastic chips to reduce collapsibility in loess-like soils at Mount Moorosi Village, Lesotho
… was underlain by a top layer of silty-sandy loess, a windblown soil of at least 3 m in thickness, with the majority of its grains falling within the siltsized particle range. The material demonstrated significant warping potential as well as a high hydrocollapse potential. To attempt to …
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Reconstructing late-pleistocene climatic and glacial history of central North America using loess-derived land snail stable isotopes and detrital zircon provenance
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2023-12-04 without embargo terms
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Modeling Daily Power Demand in Southern Kentucky: A Single Household Approach
… weighted robust least squares regression (LOESS), to forecast a 24 hour demand profile at the household level and compare it to existing aggregate demand models discussed in literature. Of these aggregate demand models, a quadratic autoregressive model was selected to be used as a basis for …
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The Distribution and Reproduction of the Plains Spadefoot Toad, "Scaphiopus Bombifrons", in Iowa
… had been found only in a few localities in the loess hills. The study attempted to determine whether or not the species occurred beyond the dry loess soil and adjacent flood plain. Little has been published concerning the reproduction of the plains spadefoot toad. This study attempted to …
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Reconstruction of the Late and Mid-Pleistocene climate and landscape history in SE-Central Europe - A paleopedological and geochemical multi-proxy approach in loess-paleosol studies.
Loess-paleosol sequences (LPSS) potentially are valuable archives for past environmental conditions. In SE-Central European lowlands thick loess plateaus can be found comprising several glacial-interglacial cycles. This work focuses on key sections in the middle and lower Danube Basin to i) …
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Chronology and paleoenvironment of Peoria Silt deposition and Jules Geosol development along the Illinois Valley, Illinois, USA
… This last glacial paleosol developed in thick loess deposits (Peoria Silt) proximal to the Illinois River Valley around the time of the last glacial maximum. Two sites, New Cottonwood School and Thomas Quarry, which contain the Jules Geosol, were selected along the Illinois Valley to develop …
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Assessing Pleistocene climate on the Southern High Plains through geochemical and physical characteristics of paleosols archived in the Blackwater Draw Formation
… mantle, locally up to 27 m thick, composed of loess (wind-blown silt) deposits with loess tops forming individual paleosols. Loess-paleosol couplets represent periods of deposition followed by periods of landscape stability accompanied by pedogenesis. Here we utilize geochemical and physical …
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Divide and recombined for large complex data: Nonparametric-regression modelling of spatial and seasonal-temporal time series
… by emphasis on one specific application of loess on time series decomposition, called Seasonal Trend Loess (STL). The chapter is closed by the introduction of D\&R; (Divide and Recombined) statistical framework. Data can be divided into subsets, each of which is applied with a statistical …
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Stratigraphy and history of the Sakakawea Sequence, south-central North Dakota
… and Holocene) is mostly eolian sediment (loess) The Oahe Formation is divided into three members: the Mallard Island (late Wisconsinan), Aggie Brown (latest Wisconsinan to earliest Holocene), and Riverdale (middle and late Holocene) Members. During preglacial time major rivers flowed …
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