Showing papers in "Quaternary International in 1990"

TL;DR: The magnetic susceptibility of loess and paleosol can be regarded as a proxy index of Asian monsoon variation in Central China during the last 2.5 Ma is analyzed in this article.

TL;DR: In this article, it was observed that the origin of various types of loess is governed by differences in (litho) ecological conditions rather than by the way in which the mineral material from which the loess has been derived (dust) has been primarily accumulated.

TL;DR: The Baoji Section as mentioned in this paper is the most complete Quaternary loess-paleosol section in the north-central China Loess Plateau; it contains 37 paleosols and was recently named the type-pedostratigraphic section.

TL;DR: In this article, a chronostratigraphic scheme for the East European loess province was worked out on the basis of data obtained by different research methods, based on which the Brunhes-Matuyama boundary occurs within the Don Loess, which corresponds to the maximum (Don) glaciation of Eastern Europe.

TL;DR: In this article, the geomorphic history of aeolian sand of western Negev and northern Sinai is summarized on the bases of archaeological data and rediocarbon dating.

TL;DR: In this article, it was shown that smectite is the dominant pedogenetically formed mineral in the fine clay fraction in Central European Holocene and Pleistocene loess soils as well as in relict loess soil in the central and northern part of the Great Plains of the U.S.

TL;DR: The application of TL-dating to Quaternary sediments is, apart from some earlier attempts in the Soviet Union (Shelkoplyas and Morozov, 1965; Dreimanis et al., 1978), a more recent development.

TL;DR: The malacofauna of genuine wind-blown loess consists of a minor number of tolerant species occurring mostly in high amounts and reflecting open habitats with poorly developed calcareous soils.

TL;DR: The first major event in the formation of a loess deposit is the production of silt-sized quartz particles, and many particle production methods have been proposed; the bulk of loess particles appear to be produced by glacial grinding or cold weathering in high regions (to give mountain loess) as mentioned in this paper.

TL;DR: The Bagaggera sequence consists of two Late Pleistocene loesses superimposed on the top of Middle-Pleistocene fluviatile sediments, and the sedimentary and pedological processes which lead to the formation of the sequence, were reconstructed by means of mineral and textural analyses and thin section analysis as mentioned in this paper.

TL;DR: Aeolian deposits on the northern and southern sides of the western Mediterranean, generally dating to the Upper Pleistocene, are derived from mobilization of dust from local sources, and from their sedimentation where trapped in a dense steppe environment as discussed by the authors.

TL;DR: The most impressive aeolian deposit in the Dalmatian archipelago is the loess of Susak Island as discussed by the authors, which is composed of unweathered, subrounded quartz, feldspar, mica and limestone granules.

TL;DR: The argillic horizon developed in the Weichselian loesses of western Europe can be related to mechanical clay translocation under a cold climate following a period of decarbonatation as discussed by the authors.

TL;DR: In the arid areas, the loess was re-eroded from slopes and sedimented as fluvial loess in along the valleys by flood-water.

TL;DR: In this article, the authors compared the Last Interglacial/Glacial geosoil cycles along a north-south Geosoil Traverse in Europe and found that all of the levels doubled or even tripled along the meridian pathway from north to south.

TL;DR: In this article, the renewal of concepts in paleontology leads to new hard cores based on multidisciplinary approaches implying a quantification of data, which is the reason why morphometry appears in evolution studies, quantitative paleoclimatology firstly developed on marine micro-organisms and quantitative paleoecology to characterize the different type of associations, quantitative biostratigraphy.

TL;DR: In this paper, traces of ice lensing preserved in loessic deposits, in till, and in shelters and cave infillings were found in the Po plain during the glacial time.

TL;DR: Aeolian deposits and geomorphological features due to wind erosion have been recorded in the Aremogna plain, near Roccaraso (Central Apennines) as discussed by the authors.

TL;DR: In this paper, the authors define sagging as the process in which a sudden decrease of soil volume takes place, and they define it solely in relation to loesses, and define it as the phenomenon of soil sagging.

TL;DR: Two dating techniques are available: radiometric detection (by liquid scintillation, proportional, and miniature counters) and accelerator mass spectrometry, which vary as to the amount of sample required (5-5000 mg carbon equivalent) and the dating costs ($100-$1000 per sample).

TL;DR: In this paper, a detailed soil survey in the Ter valley (province of Gerona, NE-Spain), loamy sediments were observed, which because of their geomorphological position and sediment characteristics were interpreted as loessial deposits.

TL;DR: The Upper Pleistocene aeolian loess of the Turin Hills is of interest because of its primary distribution and subsequent diffuse reworking, both of which were appreciably conditioned by the presence of the hills themselves.

TL;DR: In this paper, a 3.5 m thick sequence referred, on palaeontological and archaeological data, to the early Wurm period has been distinguished within the Ghiacciaia cave.

TL;DR: In this paper, microstratigraphic methods were used to analyze the characteristics of soil profiles and their genetic horizons in trenches, which can be instrumental in age identification of distinguished soil features (since Late Pleistocene onwards).