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GEOREF RECORD

1950 and 1951 eruptions of Mihara Yama, O Shima volcano, Japan

Helen L. Foster and Arnold C. Mason
1950 and 1951 eruptions of Mihara Yama, O Shima volcano, Japan
Bulletin of the Geological Society of America (1955) 66 (6): 731-761

Abstract

The 1950 eruption of Mihara Yama, the central crater of O Shima, Tokyo prefecture, Japan, was characterized by explosive ejection of ash and masses of molten basalt, accompanied by occasional flows. Renewed activity in early 1951 was marked by intermittent explosive activity and extrusion of lava which on several occasions overflowed the crater and solidified mainly as aa, but with small areas of pahoehoe. The composition of the various flows was essentially the same, and different types of surfaces formed primarily because of differences in viscosity of the lava and the extent of movement during solidification.


ISSN: 1050-9747
Coden: BUGMAF
Serial Title: Bulletin of the Geological Society of America
Serial Volume: 66
Serial Issue: 6
Title: 1950 and 1951 eruptions of Mihara Yama, O Shima volcano, Japan
Pages: 731-761
Published: 1955
Text Language: English
Publisher: Geological Society of America (GSA), Boulder, CO, United States
Accession Number: 1955-001811
Categories: Quaternary geology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. (incl. sketch maps)
N34°43'00" - N34°43'60", E139°22'00" - E139°22'60"
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2019, American Geosciences Institute.
Secondary Affiliation: Reference includes data from Bibliography and Index of Geology Exclusive of North America, Geological Society of America, Boulder, CO, United States
Update Code: 1955
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