نتایج جستجو برای: paleosol
تعداد نتایج: 272 فیلتر نتایج به سال:
Clay mineralogy of paleosols provides more information about Quaternary climatic changes and paleoenvironmental conditions. Clay minerals of an alluvial fan in eastern Isfahan were studied, using x-ray diffraction analysis. Studied paleosols are located on old Qf1 and Qf2 geomorphic surfaces. Qf1 geomorphic surface is older and topographically higher than Qf2. The results of clay mineralogy sho...
In mid-latitude Eurasia, loess-paleosol sequences (LPS) provide the most widespread sedimentary records of Quaternary paleoenvironmental evolution. Middle Danube Basin (MDB), these archives cover at least last million years climate history, and occasionally contain archeological findings. The studied Zemun LPS is located on right bank in Northern Serbia. site was declared as a protected site, b...
Numerous loess/paleosol sequences (LPS) in the Carpathian Basin span period of Marine Isotope Stage (MIS) 2 and last glacial maximum (LGM). Nevertheless, only two known records—Madaras Dunaszekcső—preserve highly resolved records with absolute chronologies minimal uncertainties, which enable meaningful assessment feedbacks short-term climatic fluctuations over this period. The Madaras profile i...
Paleosols of the study area is a part of the Eastern-Alborz Zone which is located about 50 km southeast of Azadshahr. These paleosols developed on floodplain and lacustrine facies of the Devonian Padeha Formation. Based on the field and textural evidences, two major paleosol horizons identified as A and B horizons. The A horizon consists of calcrete and noncalcrete paleosols which is located in...
Existence and frequency of clay minerals is useful for reconstruction of paleoenvironment, because each mineral is formed and stabilized in special condition. The objective of this study was to identify clay minerals and their genesis in two paleosols from Isfahan and Charmahal-Bakhtiari. Through field observations and physico-chemical analysis, some horizons in these soils were selected for mi...
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