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 373
- Downloads 17
Civil liability in law of Iran and France
This study attempts to evaluation the civil liability and its applied scope in law of Iran and France. It surveyed Napoleonic law and investigates that the basis of civil liability is Fault theory in law France. Also it...
Entrepreneurship from the perspective of university graduates (Case study: graduates of science and knowledge of the city of Darrehshahr)
Entrepreneurship is considered from various aspects, one of which concerns, after the success of the psychological and personal characteristics. The present study was conducted to investigate the attitudes of university...
The relationship between staff’s psychological health and job engagement in the Islamic Azad University Hamedan Branch
Humans, in information and communication era, are the greatest assets of each organization. Such definition is not an exaggeration. A huge number of management scientists believe that human power is the unique consistent...
The Position of Green Space in Promoting Urban Space Quality
The ever-increasing growth of urbanization, irregular population growth, multiplicity of motor vehicles, extra use of fossil energies, expansion of constructed buildings and separation of cities from the nature, as well...
Supercritical water oxidation for the recovery of dysprosium ion from aqueous solutions
Supercritical water oxidation (SCWO) is a new green technology to produce nanoparticles, destroy organic compounds and some inorganic compounds. In this research, supercritical water oxidation technique was used as an en...