Environmental magnetic studies on some Quaternary sediments of varied depositional settings in the Indian sub-continent

Sangode, S. J.; Sinha, Rajiv; Phartiyal, Binita; Chauhan, O.S.; Mazari, R. K.; Bagati, T. N.; Suresh, N.; Mishra, Sheila; Kumar, Ram; Bhattacharjee, Partha

doi:10.1016/j.quaint.2006.08.015

Cited by 47 publications

(28 citation statements)

References 21 publications

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“…Previous studies suggested that marine sediment was one of the most important signal carriers of climate change. Therefore, marine sediment magnetic records have been becoming another focus of paleaoclimate research (Arai et al, 1997;Kissel et al, 1999;Oldfield et al, 2003;Tang et al, 2003;Kumar et al, 2005;Sangode et al, 2007;Xu et al, 2011;Larrasoaña et al, 2015). Many magnetic results of the SCS sediments were reported since the past decade.…”

Section: Introductionmentioning

confidence: 99%

Sensitivity of Sediment Magnetic Records to Climate Change during Holocene for the Northern South China Sea

Ouyang

Zhao

et al. 2016

Front. Earth Sci.

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Section: Introductionmentioning

confidence: 99%

Sensitivity of Sediment Magnetic Records to Climate Change during Holocene for the Northern South China Sea

Ouyang

Zhao

et al. 2016

Front. Earth Sci.

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“…Magnetic properties of marine sediments can often contribute reliable information on environmental change (Kumar et al 2005;Sangode et al 2007;Yang et al 2008;Alagarsamy 2009;Zheng et al 2010) and magnetic parameters such as magnetic susceptibility (MS) became a kind of basic data for marine sediment research (Evans and Heller 2003;Yim et al 2004;Ghilardi et al 2008;Meena et al 2011). As a fast and cost-effective parameter, MS also has been successfully used as a proxy for the detection of anthropogenic pollution caused by metallurgical dusts, fly ashes from power plants and urban airborne particulates (Bityukova et al 1999;Jordanova et al 2003;Gautam et al 2004;Lu et al 2007).…”

Section: Introductionmentioning

confidence: 99%

Magnetic mineralogy and its implication of contemporary coastal sediments from South China

et al. 2012

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Magnetic parameters have been widely used as a rapid, cost-effective, and non-destructive method. To assess whether their magnetic properties reflect the development history in the Pearl River Delta, three sediment cores collected from South China coastal waters were selected for magnetic research. The results indicate that the predominant ferrimagnetic mineral is magnetite, with an additional smaller amount of surprisingly high-coercive greigite. Fine-grained superparamagnetic and singledomain particles of magnetite and the relative contribution of greigite are increased when the total concentration of ferrimagnetic minerals is higher. Three well-known stages of the Chinese history, i.e., iron smelting, cultural revolution, and the latest phase of opening and reforming were identified in the vertical variation of magnetic concentration parameters. Although the record of the three cores is not completely consistent, the results point out that magnetic concentration parameters can reflect the development and pollution history in surrounding coastal areas.

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“…Using the Bartington MS2B sensor, low-and high-frequency (0.45 and 4.65 kHz) mass specific susceptibility (v lf and v hf , respectively) values were estimated. Magnetic susceptibility was determined as a mean of six repeated measurements in different directions for each frequency (Walden et al 1997;Dekkers 1997;Sangode et al 2007;Gudadhe et al 2012).…”

Section: Magnetic Susceptibility and Heavy-mineral Assemblagesmentioning

confidence: 99%

“…Magnetic susceptibility (v) is a sensitive parameter that traces the concentration of ferrimagnetic minerals present in a sample (Sangode et al 2007). Since, felsic, carbonate, and mafic rocks are present in the Alaknanda Basin; low magnetic field susceptibility (v lf ) can be used to understand the effect of lithology, sediment mixing, and provenance of the detrital sediments.…”

Section: Magnetic Susceptibility and Heavy-mineral Assemblagesmentioning

confidence: 99%

“…Every rock has a differing weathering ability, which depends on mineral composition, climate, water flow, vegetation, etc., and thus, the composition of sediments can be used to trace the source of the river sediments. Magnetic susceptibility (v) that traces the concentration of ferrimagnetic minerals and heavy-mineral assemblages provide a crucial tool for studying sediment mixing and provenance determination (Oldfield et al 1985;Sangode et al 2007;Hounslow and Morton 2004;Garzanti et al 2011), and Principal Component Analysis (PCA) can be used as a successful tool to group the geochemical data according to its geochemical affinity and provenance (Marques et al 2008;Reid and Spencer 2009). PCA holds an advantage of reducing the dimensionality of the data without losing its originality and bringing out all strong and important relationships in a data set (Liu et al 2003).…”

Section: Introductionmentioning

confidence: 99%

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Seasonal variability of grain size, weathering intensity, and provenance of channel sediments in the Alaknanda River Basin, an upstream of river Ganga, India

Panwar

Chakrapani

2016

Environ Earth Sci

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The Ganga River in the Indian sub-continent is amongst the highest sediment transporting rivers to the World's oceans. Previous studies estimated that Ganga River derives [65 % of its sediment load from the Higher Himalayas. The Alaknanda River is a headwater stream of the Ganga River and has a high sediment flux. In the present study, freshly deposited channel sediments were collected from the Alaknanda River and its tributaries during the post-monsoon, pre-monsoon, and monsoon seasons, and were analyzed for grain-size distribution, major oxides composition, magnetic susceptibility, and heavy-mineral assemblages. The results show that the channel sediments are mostly medium-to-coarse sand (56.4-930 lm), unimodal, and symmetrical to fine skewed in distribution. The presence of dams and reservoirs seemed to affect the natural grain-size distribution in the Alaknanda River. The average value of the chemical index of alteration of *56 and weathering index of parker of *43 indicates intense physical weathering in the basin. The magnetic susceptibility and heavy-mineral assemblages showed the effect of local lithology in controlling sediment composition. The principal component analysis on the major oxide composition of channel sediment shows that felsic, mafic, and carbonate weathering contribute to the high sediment load of the Alaknanda River. This study established that along with weathering of Higher Himalayan Crystallines, weathering of Garhwal Group (enriched in magnesite, dolomites, and mafic intrusion) is also a significant source of channel sediments in the Upper Ganga Basin.

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Environmental magnetic studies on some Quaternary sediments of varied depositional settings in the Indian sub-continent

Cited by 47 publications

References 21 publications

Sensitivity of Sediment Magnetic Records to Climate Change during Holocene for the Northern South China Sea

Sensitivity of Sediment Magnetic Records to Climate Change during Holocene for the Northern South China Sea

Magnetic mineralogy and its implication of contemporary coastal sediments from South China

Seasonal variability of grain size, weathering intensity, and provenance of channel sediments in the Alaknanda River Basin, an upstream of river Ganga, India

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