Search
Now showing items 1-10 of 30
Grain size parameters of aeolian deposits in Sarakhas area, Norteastern Iran
of deposition and determining the provenance of aeolian deposits (Zhu et al., 2014).Loess and sand dunes are the two main aeolian deposits that are different regarding to their grain size distribution. Sand dunes occur in all climate conditions, but active sand...
Magnetic susceptibility and free iron oxides (Fed) of a loesspaleosol section at Southweastern Sari (Northern Iran)
>
and Fed variations in loess-paleosol sequence section ate Southweastern Sari in
northern Iran....
Distribution, lithology and provenance of peridesert loess deposits in northeastern Iran
as loess. They show a particle size distribution similar to that of typical loess deposits, containing more than 70% silt, mostly coarse silt (35–45%) and low quantities of clay and sand. Bulbous edges and evidence of wind transportation on quartz grains...
Chronostratigraphy of loess deposits in northeast Iran
Little information is available on the paleoclimate evolution of northeast Iran relating to global cold and
warm stages. The loess/paleosol sequences from southern Mashhad and Kalat-e Naderi areas were
studied to determine...
Clay mineralogical changes in loess-soils sequences along an ecological gradient in northern Iran: Implications for palaeoenvironment
Loess–palaeosol sequences can be evaluated in a number of ways and provide many
different kinds of palaeoenvironmental proxy data (Schaetzl & Anderson, 2005). The
correlation of soil clay mineralogy with climate conditions has been...
climate change in Northeast Iran based on the morphology of palygorskite and pedogenic carbonates in loess deposits
climate change in Northeast Iran based on the morphology of palygorskite and pedogenic carbonates in loess deposits...
Stable isotope geochemistry of pedogenic carbonates in loess-derived soils of northeastern Iran: Paleoenvironmental implications and correlation across Eurasia
Despite the occurrence of pedogenic carbonates in loess/paleosol sequences of northern and northeastern Iran, there is no information about stable isotope geochemistry of pedogenic carbonates in these regions. This paper presents thefirst stable...
Engineering Geology Criteria for Evaluation and Classification of Loess in Golestan Province
What discriminates loess from other soil types is lack of stratification, as well as uniformity of
their particles, which makes them to be easily identified in field. An area of approximately
388,000 hectares of Golestan province...
Discrimination of sand dunes and loess deposits using grain-size analysis in northeastern Iran
Identification and characterization of aeolian deposits in arid environments provide information on mechanisms of loess and sand accumulation. The objectives of this study were to (i) identify the distribution of aeolian deposits...
Effect of slope aspects on variation of soil organic carbon in a loess hillslope of Toshan area, Golestan Province,Iran
. The aim of this study is to characterize spatial patterns of the concentrations of topsoil SOC on different slope aspects in a loess hillslope of Toshan area in Golestan Province, Northen Iran. Therefore, 96 soil samples were collected at three aspects...