History of Younger Fuji Volcano.

Miyaji, N.

doi:10.5575/geosoc.94.433

Cited by 71 publications

(63 citation statements)

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“…The overview of these projects is shown by Takada et al (2004). The names of the layers of Fuji Volcano used in this study are the same as those stated in Tsuya (1968), Machida (1977), Uesugi (1990Uesugi ( , 1993Uesugi ( , 1998Uesugi ( , and 2003, and Miyaji (1988).…”

Section: Introductionmentioning

confidence: 94%

“…At the outcrop (040604-03) in Higashifuji-Enshujyo, to the east of Kurotsuka, volcanic glasses were detected in the weathered volcanic ash soil that covers the Kansuyama scoria (KNS) (Miyaji, 1988) (Figures 2 and 3). The maximum content rate of volcanic glasses was 28.3 .…”

Section: Correlation With the Kansuyama Scoria (Kns)mentioning

confidence: 99%

“…The refractive index was in the range of 1.499-1.502 in the higher mode, and 1.494-1.497 in the lower mode. The characteristics of the volcanic glasses in the lower mode level indicate that they originate in the Kozushima-Tenjosan tephra .The peak of the content rate was measured at the level above the Zunasawa scoria (Zu) (Miyaji, 1988). Among the volcanic glasses originating in the Kozushima-Tenjosan tephra, the maximum value was measured at the level immediately below Hum; therefore, Hum is considered to have erupted after the Kozushima-Tenjosan tephra.…”

Section: Correlation With the Higashi-usuzuka South Lava Flow (Hum)mentioning

confidence: 99%

“…The Obuchi scoria (OBC; Miyaji, 1988) has its source in the surrounding area of Kita-Takahachiyama . In the Takahachi parking area south (031029-03), talus deposit and OBC, which are intercalated with weathered volcanic ash soil, are observed in descending order (Figures 2 and 3).…”

Section: On the Southern Flank Of Fuji Volcano Correlation With The Omentioning

confidence: 99%

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Eruptive history of Fuji Volcano from AD 700 to AD 1,000 using stratigraphic correlation of the Kozushima-Tenjosan Tephra

淳¹,

亮²,

俊³

2007

Bull. Geol. Surv. Japan

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Abstract:We analyzed refractive index, microstructure, vesicularity of glass from an alien tephra in the upper weathered volcanic ash soil horizon of Fuji Volcano, Izu peninsula, Miyakejima, and Niijima Volcanoes. The glass size increases toward Izu Islands. Based on the vesiculality of glass, the Kozushima-Tenjosan tephra (AD 838) can be distinguished from the Niijima-Mukaiyama tephra (AD 886). Thus, we determined from where the tephra of low refractive index on the flank of Fuji Volcano comes from. Next, using the stratigraphic correlation of the tephra, the detailed stratigraphy of Fuji Volcano during the period of AD 700-1,000 was clarified. It was difficult to determine exact age of each eruption by 14 C dating with 2 sigma error bar (around ±40 years). However, the KozushimaTenjosan tephra horizon can classify Fuji Volcano products those below the tephra and those above the tephra. The Obuchi scoria (OBC), the Kansuyama scoria (KNS), the Nishi-Futatsuzuka scoria on S and SE flanks, the Takamarubi lava flow (Tam) and the Hinokimarubi 2 lava flow (Hnm 2), the scoria associated with the Oniwa-Okuniwa 2 lava flow (Onw 2) on NE and N flanks are below the Kozushima-Tenjosan tephra. The Fudosawa lava flow (Fud), the Obuchimarubi lava flow (Obu), the Higashi-Usuzuka south lava flow (Hum), the Mizugatsuka-hinokimarubi lava flow (Him) on S and SE flanks, the Kenmarubi 2 lava flow (Ken 2), the Tenjin-Igatono scoria (TNG), the Aokigahara lava flow and the Nagaoyama scoria on the NE and N flanks are above the Kozushima-Tenjosan tephra. The Kozushima-Tenjosan tephra was discovered just below the S-24-6 scoria on E flank. The stratigraphy of E flank is rearranged as follows in ascending order: the S-24-5 scoria, the S-24-5-1 scoria (newly defined), the S-24-5-2 scoria (newly defined), the S-24-5-3 scoria (newly defined), the Kozushima-Tenjosan tephra, the S-24-6 scoria, the S-24-7 scoria, the S-24-9 scoria, the S-24-10 scoria.

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Section: Introductionmentioning

confidence: 94%

Section: Correlation With the Kansuyama Scoria (Kns)mentioning

confidence: 99%

Section: Correlation With the Higashi-usuzuka South Lava Flow (Hum)mentioning

confidence: 99%

Section: On the Southern Flank Of Fuji Volcano Correlation With The Omentioning

confidence: 99%

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Eruptive history of Fuji Volcano from AD 700 to AD 1,000 using stratigraphic correlation of the Kozushima-Tenjosan Tephra

淳¹,

亮²,

俊³

2007

Bull. Geol. Surv. Japan

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“…There is noticeable development of stepped microtopography composed of terraces and risers in the region where these island communities are prevalent ( Figure 2). The slope is composed of basalic bedrock from lava flows during 'Younger' Fuji's most recent eruptive period (ONW1), and scoria overlaying the bedrock (Tsuya 1971;Miyaji 1988). The scattering Larix kaempferi that have been deformed by the wind indicates that the slope is constantly subject to strong winds, particularly in winter (Oka 1980), therefore deep snow cover is unlikely to occur.…”

Section: Study Area and Methodsmentioning

confidence: 99%

Plant Community Dynamics and Microtopography Close to the Tree Line on the Northwestern Slope of Mt. Fuji, Central Japan

Oka¹,

Kanno

2012

Geog. Rev. Japan B

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We studied the relationship between slope processes and plant community structure on the northwestern side of Mt. Fuji. This slope has a stepped microtopography between 2700 and 2950 meters above sea level, with a particularly well-defined structure between 2800 and 2850 m. This stepped microtopography is almost certainly caused by periglacial process and acts as a foundation for the development of islands of plant communities. These communities are concentrated on riser sections of the steps, with virtually no growth on flat, terraced areas. Ground temperature monitoring and paint-line exposure experiments showed that the gravel is unstable on the terraces but stable on the risers. It is proposed that the vegetation distribution is determined by the stability of the surface materials. In addition, variation in snow depth by step component should have an effect on the vegetation distribution. The plant community composition is diverse on the upper slopes; Salix reinii is predominant and mosses are also prominent. The lower slopes are dominated by tree species, including Larix kaempferi and Betula ermanii. L. kaempferi had fewer annual rings with increasing slope elevation, suggesting that populations were established at different times at different altitudes. We predict that primary succession at the tree line has moved to progressively higher elevations on the northwestern slope of Mt. Fuji using the stepped microtopography as a foundation.

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Monitoring Quiescent Volcanoes by Diffuse CO2 Degassing: Case Study of Mt. Fuji, Japan

Notsu¹,

Mori²,

Vale³

et al. 2006

Terrestrial Fluids, Earthquakes and Volcanoes: The Hiroshi Wakita Volume I

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History of Younger Fuji Volcano.

Cited by 71 publications

References 0 publications

Eruptive history of Fuji Volcano from AD 700 to AD 1,000 using stratigraphic correlation of the Kozushima-Tenjosan Tephra

Eruptive history of Fuji Volcano from AD 700 to AD 1,000 using stratigraphic correlation of the Kozushima-Tenjosan Tephra

Plant Community Dynamics and Microtopography Close to the Tree Line on the Northwestern Slope of Mt. Fuji, Central Japan

Monitoring Quiescent Volcanoes by Diffuse CO2 Degassing: Case Study of Mt. Fuji, Japan

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