Sign of Pedogenesis in loess-paleosol sequences as indicator of paleocilmate, Golestan Province, Iran
Journal Title: International Research Journal of Applied and Basic Sciences - Year 2012, Vol 3, Issue 9
Abstract
One of the best indicators of the geological and environmental events in the Quaternary is the alternation of loess-paleosol. In this study, for pale environmental identification of buried pale sols in loess sequences which located between 36° 49’ 15˝ north latitude and 54° 26 52˝ east longitude in the southern part of Gorgan, the disturbed soil samples for physicochemical analysis and clay mineralogy and undisturbed samples for preparation of thin sections were collected. The physico-chemical results (calcium carbonate content, particle size distribution, cation exchangeable capacity and Feo/Fed) indicated that the soils had experienced several pedogenic periods. The result of mineralogy showed that a high amount of smectite, vermiculite and mixed layer mica-smectite in paleosols compared to loess deposits probably indicates moister regimes through interglacial compared to glacial periods. sign of climate oscillation has inherited in the shapes of pedogenic. The micro morphological observations revealed many evidences on the occurrence of pedogenic processes. One of the most important index of pedogenesis, clay coating and hypo coating around void are presented only in buried paleosols, which is the evidence for moist climate conditions, enough for leaching and translocation of clay. Formation of the studied loess and paleosols, have probably taken place in glacial and interglacial cycles with different climate condition, respectively.
Authors and Affiliations
Atefeh ziyaee*| Dept. of Soil Science, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran.ziyaee@gmail.com, Abbas Pashaei| Dept. of Soil Science, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran., Farhad Khormali| Dept. of Soil Science, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran., Mohammad Reza Roshani| Islamic Azad University, Nour Branch, Iran.
Keywords
Related Articles
- EP ID EP5110
- DOI -
- Views 402
- Downloads 17
The Effect of Emailing on Motivation of Adult English Learner of Iran
This paper originally was motivated by the claim that using emailing in language institutes has strong effect on motivation of adult learners. It investigated the motivation orientation of the Iranian English learners to...
Examining the Factors Associated with Recurrence of Bipolar Disorder in Patients Hospitalized in Ibn Sina Psychiatric Hospital in Bandar Abbas
Introduction: Bipolar mood disorder is a common, severe, and persistent mental disease with periods of major mania and depression. Given the high prevalence and increasing incidence of this disease, the study aimed to id...
The Relationship between Iranian EFL Teachers’ Self-Efficacy and Gender
The purpose of this study was to examine the relationship between Iranian EFL teachers’ sense of self-efficacy and their gender. The research is a quantitative study in which the data is obtained to get a great understan...
Economic Position in the Naser Khosrow’s Itinerary
The writing of Itinerary as travel has an old history. And consist of man's travels based on various motives. Itinerary writing account as geography writing but the subjects of Itinerary is not limited only to the inform...
Comparison of flower components of mandarin and sweet orange (Citrus sp.)
The flower components of mandarin and sweet orange were investigated in this study. Flower components were extracted using an ultrasonic bath and eluted with n-pentane: diethyl ether (1:2) solvent. Then all analyzed usin...