Origin and derived courses of eolian dust quartz deposited during marine isotope stage 2 in East Asia, suggested by ESR signal intensity

Ono, Yuichi; Naruse, Toshiro; Ikeya, Motoji; Kohno, H.; Toyoda, Shin

doi:10.1016/s0921-8181(98)00012-5

Cited by 45 publications

(29 citation statements)

References 13 publications

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“…The numbers of the oxygen vacancies in quartz of sediment samples in loess sequences of MIS 1 and 2 in the Japanese Islands were systematically measured by Naruse et al (1997), Ono et al (1998) and Toyoda and Naruse (2002). As shown in Fig.…”

Section: Source Change Of Aeolian Deposits Between Mis 1 and 2 In Thementioning

confidence: 99%

ESR signals in quartz: Applications to provenance research – A review

Toyoda

Nagashima

Yamamoto

2016

Quaternary International

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Section: Source Change Of Aeolian Deposits Between Mis 1 and 2 In Thementioning

confidence: 99%

ESR signals in quartz: Applications to provenance research – A review

Toyoda

Nagashima

Yamamoto

2016

Quaternary International

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“…In MIS 2, loess samples in southern Japan shows the similar value as in MIS 1. However, the number of oxygen vacancies in northern Japan is systematically larger in those in southern Japan, implying that in the north, the aeolian dust came from sources comprising from older basement rocks, possibly Precambrian rocks in Siberia, having contributed to the loess deposited in northern Japan in MIS 2 (Naruse et al, 1997;Ono et al, 1998;Toyoda and Naruse, 2002). Nagashima et al (2007a) proposed that the Crystallinity Index (CI) measured using X ray diffraction is another proxy to reveal the source of the aeolian dust.…”

Section: The Horizontal Axis For the Natural Quartz (Closed Circlesmentioning

confidence: 99%

The E1’ center in natural quartz: Its formation and applications to dating and provenance researches

Toyoda

2011

Geochronometria

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Quartz is one of the minerals useful for electron spin resonance (ESR) dating. The E 1 ' center is one of well-known paramagnetic defects in crystalline quartz. This center has a unique feature; its intensity increases on heating. An electronic process to explain this increase was found to be controlled not only by the number of oxygen vacancies, which are the precursors, but also by the number of Al hole centers, which depend on the previous radiation dose and on the Al concentration. The maximum intensity on heating is called the heat treated E 1 ' center, which has been posited to correspond to the number of oxygen vacancies in quartz and was found to be correlated with the ages of the host granites (Toyoda and Hattori, 2000). The experimental results on spin-spin relaxation times of the E 1 ' center indicate that external beta and gamma rays create oxygen vacancies in natural quartz rather than alpha or alpha recoil particles (Toyoda et al., 2005). The correlation between the numbers of the oxygen vacancies in quartz and the ages of the host granite made it possible to distinguish the quartz of a sedimentary reservoir from another with different age of crystallization (Toyoda and Naruse, 2002). Quartz fractions extracted from leoss and atmospheric deposition in Japan and from sediments in Japan sea were analyzed by ESR. The temporal change of the contributions from two dust sources in China were discussed in the context of climate change.

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“…Chronic impact or occasional occurrence of "dust events" are reported from most regions of the world: Slovakia -Western Carpathians (Šály 1974;Šály, Mihálik 1970), the Netherlands (Arens 1996), Switzerland (Sticher et al 1975), U.S.A. (Harland et al 2002), Nepal (Guggenberger et al 1998), Asia -Gobi (Wake et al 1994;Husar et al 2001;Jaffe et al 2003), Japan (Ono et al 1998), New Zealand (Stewart et al 1984. The territory of the Czech Republic is no exception (Hibsch 1930;Kukal 1978;Šály 1986).…”

Section: Specific Features Of Soil-forming Substrate On Limestone Sitesmentioning

confidence: 99%

Uniqueness of limestone soil-forming substrate in the forest ecosystem classification

Šamonil¹

2007

J. For. Sci.

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AbstrAct:The uniqueness of limestone soil-forming substrate was assessed with respect to the classification of forest ecosystems. 50 soil profiles from the Bohemian Karst were studied and the results were confronted with previously published works from other karst areas. The evaluation of soil profiles was based on a macroscopic description, on the results of chemical and physicochemical analyses, and on a micromorphological study. The carbonate bedrock was a cause of specific genesis of soils in these sites -both recent and relict ones (terrae calcis). However, it does not always condition the unique characteristics of these sites whose differentiation would call for an a priori special edaphic category. Unique geochemical characteristics of the substrate are modified on the gradient of advanced pedogenesis (Holocene up to mid-Pleistocene soils were assessed) by a very intensive soil-forming process connected with the impact of allochthonous, mostly aeolian material. Two possible approaches were designed for the classification of these sites: (i) wider conception -distinction of the basic edaphic category with small limitations for the quality of soil-forming substrate, (ii) narrower conception -limestone edaphic category with a number of limitations to distinguish this edaphic category.

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Origin and derived courses of eolian dust quartz deposited during marine isotope stage 2 in East Asia, suggested by ESR signal intensity

Cited by 45 publications

References 13 publications

ESR signals in quartz: Applications to provenance research – A review

ESR signals in quartz: Applications to provenance research – A review

The E1’ center in natural quartz: Its formation and applications to dating and provenance researches

Uniqueness of limestone soil-forming substrate in the forest ecosystem classification

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