Large-volume Felsic Volcanism and Crustal Strain Rate
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- TAKAHASHI Masaki
- Department of Earth Sciences, Ibaraki University
Bibliographic Information
- Other Title
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- 大規模珪長質火山活動と地殻歪速度
- ダイキボ ケイチョウシツ カザン カツドウ ト チカク ヒズミソクド
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Description
There is no positive correlation between the long-term eruption rate of large-scale felsic volcanism and its discharge volume of a single eruptive episode. This means that the storage of voluminous felsic magma at high-level in the crust is caused not by high magma production rate but by continuous accumulation of magma during a long repose time, if the long-term eruption rate reflects the averaged magma production rate. If the cruslal defomation is weak, the magma chamber could be stable in the crust; it is favorable for efficient accumulation of voluminous magma. In fact, the large-volume felsic volcanism occurs exclusively in the region of low crustal strain rate. The low crustal strain rate is considered to be essential for the formation of large-scale felsic volcanism. The large-volume felsic volcanic activity is present in the compressional tectonic stress field as well as in the extensional one; the difference in arrangement of principal stress axes is not related to the occurrence of voluminous felsic volcanism.
Journal
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- BULLETIN OF THE VOLCANOLOGICAL SOCIETY OF JAPAN
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BULLETIN OF THE VOLCANOLOGICAL SOCIETY OF JAPAN 40 (1), 33-42, 1995
The Volcanological Society of Japan
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Details 詳細情報について
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- CRID
- 1390282679280882432
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- NII Article ID
- 10004653754
- 110003041025
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- NII Book ID
- AN10512786
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- ISSN
- 21897182
- 04534360
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- NDL BIB ID
- 3624090
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL Search
- CiNii Articles
- Crossref
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- Abstract License Flag
- Disallowed