Distinguishing the sources of Asian dust based on electron spin resonance signal intensity and crystallinity of quartz

Sun, Youbin; Tada, Ryuji; Chen, Jun; Chen, Huizhong; Toyoda, Shin; Tani, Atsushi; Isozaki, Y.; Nagashima, Kana; Hasegawa, Hitoshi; Ji, Junfeng

doi:10.1016/j.atmosenv.2007.07.014

Cited by 66 publications

(63 citation statements)

References 62 publications

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“…Rex et al provided evidences for the contribution of continental dust to the Hawaii soil and North Pacific deposits based on the O isotope of quartz [50]. It is shown that the O isotope, crystallinity and ESR signal intensity of quartz, exhibits a clear spatial pattern in the PSAs of Asian dust [51,52]. However, the physiochemical properties of quartz may be modified by the pre-treatment that usually involves pyrosulfate melting under high temperature.…”

Section: Geochemistry Of Monomineralmentioning

confidence: 97%

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Geochemical studies on the source region of Asian dust

Chen

Gao-jun

2011

Sci. China Earth Sci.

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165

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The North China and the neighbouring Mongolia in Asian Interior is characterized by extremely dry climate, resulted in one of the world's major dust emission centres. Deciphering the source region of Asian dust is critical for revealing the mechanism of the dust production, interpreting the paleo-environmental records of eolian deposits, predicting the overall environmental effects of dust, and setting the strategies for the control of contemporary dust storms. This paper summarizes the geochemical methods applied to the source tracing of Asian dust. Nd-Sr isotopes were the most extensively studied source tracer of Asian dust and have been successfully applied in many cases. Geochemistry of detrital monomineral shows great theoretical advantages in source tracing and deserves further studies. The short-range transportation of Chinese loess with direction similar to that of the prevailing near surface wind is revealed. Source tracing also shows that the Asian dust has two ultimate material sources from the northern margin of the Tibetan Plateau and the Central Asian Orogen, which confirms the importance of mountain processes in the production of silt eolian particles. Based on the recent progresses on the source tracing of Asian dust, discussions are expanded on the natural background of Asian dust storms and potential anthropogenic influence, the materials evolution of the source regions of Asian dust and its relationships with climate changes and Tibetan uplift, and the role of Tibetan uplift in the Asian dust system. desert, loess, Asian dust, dust storm, Tibetan Plateau Citation:Chen J, Li G J. Geochemical studies on the source region of Asian dust.

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Section: Geochemistry Of Monomineralmentioning

confidence: 97%

“…However, the physiochemical properties of quartz may be modified by the pre-treatment that usually involves pyrosulfate melting under high temperature. The factors that control the O isotope, crystallinity and ESR signal intensity of quartz remain unclear [51,52], which deserve further studies.…”

Section: Geochemistry Of Monomineralmentioning

confidence: 99%

Geochemical studies on the source region of Asian dust

Chen

Gao-jun

2011

Sci. China Earth Sci.

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165

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“…Most previous studies have focused on eolian material preserved in the depositional regions, e.g., the CLP (Ding et al 2002;Sun 2002;Sun et al 2007) and the North Pacific Ocean (Janecek and Rea 1985;Rea and Leinen 1988;Hovan et al 1989;Rea 1994;Chen et al 1999Chen et al , 2007Nilson and Lehmkuhl 2001;Bailey et al 2011), while less attention has been paid directly to the physical-chemical properties of material from potential source regions. On the basis of modern meteorological observations (Sun et al 2001) and constraints from electron spin resonance (ESR) signal intensity and the crystallinity index of finegrained quartz , dust from the Taklimakan Desert has been argued to be largely redeposited onto the desert and surrounding mountains.…”

Section: Introductionmentioning

confidence: 99%

Characterizing magnetic mineral assemblages of surface sediments from major Asian dust sources and implications for the Chinese loess magnetism

et al. 2015

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Eolian dust plays an important role in the Earth's climate system. Environmental magnetism has been widely used to trace dust variations at different spatial and temporal scales. However, the magnetic properties of sediments from key dust sources have not been well determined. In this study, surface samples from potential dust sources in inner Eastern Asia were systematically investigated. Our results indicate that ferrimagnetic and antiferromagnetic minerals are both present in surface sediments and that they have broad grain size distributions. Ferrimagnetic components are dominated by partially oxidized coarse-grained (pseudo-single domain and multi-domain) lithogenic magnetite particles with minor contributions from pedogenic fine-grained (single domain and superparamagnetic) particles. Antiferromagnetic hematite can be classified into three groups in terms of diffuse reflectance spectroscopy (DRS) band positions (P 560 nm , P 545 nm , and P 535 nm , where numbers indicate the DRS band wavelength for hematite). The first group (P 560 nm ) is the coarse-grained hematite of lithogenic origin and is mostly confined to western China. The P 535 nm group is of pedogenic origin. The P 545 nm group is an intermediate phase that is present both in surface samples from the source regions and in loess. Therefore, the P 545 nm and P 535 nm groups are related to eolian inputs to the Chinese Loess Plateau and pedogenic processes, respectively. In addition, significant differences exist between the magnetic properties of eolian material from sources and depositional regions due to gravitational sorting. These insights provide strong constraints on interpretation of dust signals recorded by the Chinese loess and marine sediments from the North Pacific Ocean.

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“…The ESR signal intensity and CI values have been used to distinguish sources of sediments, such as eolian dusts from various deserts in western China (e.g., Nagashima et al 2007;Sun et al 2007). We focused on the quartz fraction because it is the most common mineral in detrital materials and is resistant to physical and chemical weathering.…”

Section: Introductionmentioning

confidence: 99%

ESR signal intensity of quartz in the fine-silt fraction of riverbed sediments from the Yangtze River: a provenance tracer for suspended particulate matter

Saito

Tada

Zheng

et al. 2017

Prog. in Earth and Planet. Sci.

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The Asian summer monsoon exerts a strong influence on the hydrologic cycle in East Asia. Moreover, the distribution of heavy precipitation in the Yangtze River basin, which covers a large area of South China, is sensitive to changes in monsoon intensity. Thus, the paleo-distribution of heavy precipitation in the Yangtze basin is key in reconstructing the paleo-monsoon intensity. In this study, we established proxies for distinguishing sediments from the northwestern and southeastern parts of the Yangtze River basin, with the goal of using them to reconstruct the paleo-distribution of heavy precipitation in the basin based on changes in the provenance of detrital sediments, as determined using sediment records at the river mouth. The proxies included the electron spin resonance (ESR) signal intensity and the crystallinity index (CI) of quartz in modern riverbed sediments along the mainstream and tributaries of the Yangtze River. The data revealed that the fine-silt fraction of the sediments (which represents suspended particulate matter, SPM) from each major tributary can be distinguished on the basis of ESR signal intensity and CI values. The values for each tributary reflect the age and type of bedrock in the tributary basin and show distinct regional variations according to the distribution of geological blocks within the Yangtze basin. In addition, the analyzed ESR signal intensity and CI values of the fine-silt fraction of riverbed sediments below mainstream-tributary junctions agree well with values calculated according to a simple mixing model of SPM discharged from the tributaries and the mainstream.

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Distinguishing the sources of Asian dust based on electron spin resonance signal intensity and crystallinity of quartz

Cited by 66 publications

References 62 publications

Geochemical studies on the source region of Asian dust

Geochemical studies on the source region of Asian dust

Characterizing magnetic mineral assemblages of surface sediments from major Asian dust sources and implications for the Chinese loess magnetism

ESR signal intensity of quartz in the fine-silt fraction of riverbed sediments from the Yangtze River: a provenance tracer for suspended particulate matter

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