干旱区生态环境知识资源中心(Arid): MAGNETIC PARAMETERS AND PALEOCLIMATE: A CASE STUDy OF LOESS DEPOSITS OF NORTH-EAST OF IRAN

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DOI	10.22201/igeof.00167169p.2021.60.4.1949
	MAGNETIC PARAMETERS AND PALEOCLIMATE: A CASE STUDy OF LOESS DEPOSITS OF NORTH-EAST OF IRAN
	Haskouei, M. Fereshteh; Alimohammadian, Habib; Sabouri, Jafar
通讯作者	Haskouei, MF (corresponding author), Univ Isfahan, Paleontol, Esfahan, Iran.
来源期刊	GEOFISICA INTERNACIONAL
ISSN	0016-7169
出版年	2021
卷号	60 期号:4 页码:280-293
英文摘要	Environmental magnetism techniques enable us to reconstruct paleoclimate conditions in some deposition such as losses. The magnetic properties of minerals are used as proxies for environmental changes. For this study, loess/paleosol sequence of Kolet section at Neka, north-east of Iran were magnetically investigated. We applied environmental magnetism methods, to reconstruct paleoclimate changes. We investigated relationship between paleoclimate changes and environmental magnetism proxies like magnetic susceptibility (chi) variation. The laboratory techniques indicated the presence of main factor of magnetic property in loess/paleosol sequence, such as magnetite, maghemite and etc. We also estimated magnetically parameters (like SIRM, HIRM and etc.) to confirm concentrations of both aeolian and pedogenic particles versus variations of magnetic susceptibility enhancement. The chi values show prominent peaks for the three well developed soil and paleosol horizons, Recent Soil (S0), Upper Paleosol (S1) and Lower Paleosol (S2); which refer to warmer and wetter conditions. As result, we concluded that the increase/decreasing of magnetic susceptibility is coinciding with palaeosol/loess sequence, and probably with humid/arid conditions. Moreover, variations of magnetic susceptibility versus lithological column of Kolet section enabled us to recognize paleoclimatically periods known as interglacial/glacial cycles. We plotted variation of magnetic susceptibility (MS), Natural Remnant Magnetization (NRM), Frequency Dependent Susceptibility (chi fd) and chi fd% versus lithological plot of the loess profile to confirm loess/paleosol deposits of Kolet section bear magnetic particles. Then, we applied the obtained magnetic data as variation of magnetic susceptibility (MS) to indicate that there have been glacial/interglacial periods during over the past 50 ka. Hence, during this period of time, there are three major glacial occurrences in the study area. Also, we conclude there was no main glaciation occurrence since last 20.5 ka.
英文关键词	Loess Magnetism Magnetic parameters Palaeoclimate Interglacial glacial periods Neka and Iran
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000705800200001
WOS关键词	DEEP-SEA SEDIMENTS ; ENVIRONMENTAL MAGNETISM ; PLEISTOCENE ; SUSCEPTIBILITY ; MIDDLE ; RECORD
WOS类目	Geochemistry & Geophysics
WOS研究方向	Geochemistry & Geophysics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/363405
作者单位	[Haskouei, M. Fereshteh] Univ Isfahan, Paleontol, Esfahan, Iran; [Alimohammadian, Habib] Geol Survey Iran, Tehran, Iran; [Alimohammadian, Habib] Inst Mexicano Petr, Mexico City, DF, Mexico; [Sabouri, Jafar] Geol Survey Iran, Dept Paleontol, Tehran, Iran
推荐引用方式 GB/T 7714	Haskouei, M. Fereshteh,Alimohammadian, Habib,Sabouri, Jafar. MAGNETIC PARAMETERS AND PALEOCLIMATE: A CASE STUDy OF LOESS DEPOSITS OF NORTH-EAST OF IRAN[J],2021,60(4):280-293.
APA	Haskouei, M. Fereshteh,Alimohammadian, Habib,&Sabouri, Jafar.(2021).MAGNETIC PARAMETERS AND PALEOCLIMATE: A CASE STUDy OF LOESS DEPOSITS OF NORTH-EAST OF IRAN.GEOFISICA INTERNACIONAL,60(4),280-293.
MLA	Haskouei, M. Fereshteh,et al."MAGNETIC PARAMETERS AND PALEOCLIMATE: A CASE STUDy OF LOESS DEPOSITS OF NORTH-EAST OF IRAN".GEOFISICA INTERNACIONAL 60.4(2021):280-293.