Quaternary Research
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Late Quaternary Fluvial Sedimentation in the Voidomatis Basin, Epirus, Northwest GreeceAbstract Detailed morpho- and lithostratigraphic investigations, allied with radiometric dating, in the Voidomatis basin, Epirus, northwest Greece, have identified four Quaternary terraced alluvial fills that range from middle Pleistocene to historic in age. Major-periods of alluviation during the late Quaternary were associated with valley glaciation (ca. 26,000–20... ... hiện toàn bộ
Quaternary Research - Tập 35 - Trang 103-115 - 1991
Holocene Climate in the Northern Great Plains Inferred from Sediment Stratigraphy, Stable Isotopes, Carbonate Geochemistry, Diatoms, and Pollen at Moon Lake, North DakotaSeismic stratigraphy, sedimentary facies, pollen stratigraphy, diatom-inferred salinity, stable isotope (δ18 O and δ13 C), and chemical composition (Sr/Ca and Mg/Ca) of authigenic carbonates from Moon Lake cores provide a congruent Holocene record of effective moisture for the eastern Northern Great Plains. Between 11,700 and 950014... hiện toàn bộ
Quaternary Research - Tập 48 - Trang 359-369 - 1997
Rock type and dust influx control accretionary soil development on hillslopes in the Sandia Mountains, New Mexico, USAAbstract Lower slopes of the Sandia Mountains are characterized by granitic corestone topography and weathering-limited slopes with thin grusy colluvium and weakly developed soils. In contrast, thick soils with illuvial clay and pedogenic carbonate have developed below aplite outcrops. Aplite is resistant to chemical decomposition, but physically weathers to blocky ... ... hiện toàn bộ
Quaternary Research - Tập 76 - Trang 411-416 - 2011
Plagioclase sub-species in Chinese loess deposits: Implications for dust source migration and past climate changePlagioclase mineral sub-species in the Lingtai Section in central Chinese Loess Plateau are examined using Mineral Liberation Analyzer techniques, showing that loess and paleosol samples exhibit similar patterns in terms of plagioclase feldspar sub-species content. This suggests that both loess and paleosol units have preserved their primary Ca-bearing plagioclase compositions of loess sou... ... hiện toàn bộ
Quaternary Research - Tập 85 - Trang 17-24 - 2016
Quaternary Palynology of the Pacific Slope of WashingtonQuaternary deposits on the Pacific slope of Washington range in age from the earliest known interglaciation, the Alderton, through the Holocene. Pollen stratigraphy of these deposits is represented by 12 major pollen zones and is ostensibly continuous through Zone 8 over more than 47,000 radiocarbon yr. Before this, the stratigraphy is discontinuous and the chronology less certain. Environ... ... hiện toàn bộ
Quaternary Research - Tập 8 - Trang 282-306 - 1977
A quantitative midge-based reconstruction of mean July air temperature from a high-elevation site in central Colorado, USA, for MIS 6 and 5Abstract Sediments recovered from the Ziegler Reservoir fossil site (ZRFS) in Snowmass Village, Colorado (USA) were analyzed for subfossil chironomids (or midges). The midge stratigraphy spans ~140–77 ka, which includes the end of Marine Oxygen Isotope Stage (MIS) 6 and all of MIS 5. Notable shifts in midge assemblages occurred during two discrete intervals: the tra... ... hiện toàn bộ
Quaternary Research - Tập 82 - Trang 580-591 - 2014
The Relevance of Old World Archaeology to the First Entry of Man into New Worlds: Colonization Seen from the AntipodesFollowing several discussions in recent numbers of Quaternary Research on the peopling of the Americas, this paper suggests that movements into the New World should be viewed in the wider context of subsistence, technology, and movement around the western littorals of the Pacific, resulting in the colonization not of one but of two new continents by men out of As... ... hiện toàn bộ
Quaternary Research - Tập 8 - Trang 128-148 - 1977
Pleistocene Terraces of the Alto Henares (Guadalajara), SpainA suite of four terraces in the upper Rio Henares drainage system (Rio Tajo basin) now provides a partial geomorphological link between the Middle Pleistocene, Lower Paleolithic archeological sites at Ambrona and Torralba (upper Ebro basin) and those in the vicinity of Madrid. The Campiña and Low Terrace features are shown by radiocarbon dating to be of Holocene and Würm ages, respectively... ... hiện toàn bộ
Quaternary Research - Tập 2 - Trang 473-486 - 1972
13C Record of Benthic Foraminifera in the Last Interglacial Ocean: Implications for the Carbon Cycle and the Global Deep Water CirculationThe 13 C/12 C ratios of Upper Holocene benthic foraminiferal tests (genera Cibicides and Uvigerina ) of deep sea cores from the various world ocean basins have been compared with those of the modern total carbon dioxide (TCO2 ) measured during the GEOSECS program. The δ... hiện toàn bộ
Quaternary Research - Tập 21 - Trang 225-243 - 1984
Sea Level Events and Pleistocene Coral Ages in the Northern BahamasEmergent Pleistocene sea level indicators in the northern Bahamas include: a bioerosional notch at +5.3 to 5.9 m; sea caves, notches, and marine terraces at about +4.3 m; and lithified coral rubble and reef deposits between 0 and 3 m. Thorium 230 dates of the fossil corals, which were deposited as these features were being produced, span the age range from 100 to 145 thousand years BP with... ... hiện toàn bộ
Quaternary Research - Tập 5 - Trang 215-224 - 1975
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