Philippine Sea Plate Boundary in and around the West Part of Sagami Bay, Central Japan.
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- Ishibashi Katsuhiko
- Research Center for Urban Safety and Security, Kobe University
Bibliographic Information
- Other Title
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- 相模湾西部周辺のフィリピン海プレートの境界 (短報)
- サガミワン セイブ シュウヘン ノ フィリピンカイ プレート ノ キョウカイ
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Abstract
The Sagami Bay region is situated in the eastern part of the South Fossa Magna on the Pacific coast of central Japan, where the north-south running Izu-Bonin arc on the eastern margin of the Philippine Sea (PHS) plate joins with the Honshu arc. In this region, the non-volcanic Izu outer arc (IOA) lithosphere is being subducted beneath the Kanto district north-northwestward, and the volcanic Izu inner arc (IIA) on the west of IOA is colliding with Honshu to the north of the Izu Peninsula because of its buoyancy. I infer that the subduction entrance of the IOA lithosphere is at the southern margin of the Sagami Basin in Sagami Bay, and estimate the depth of the upper surface of the IOA lithosphere beneath the Ashigara Plain on the north of Sagami Bay at more than 10km. On the other hand, the surface collision boundary between the IIA lithosphere and the Honshu block is located about 50km north from the subduction entrance of the IOA lithosphere. Therefore, there should exist a north-south striking fracture within the PHS plate which separates the subducting IOA lithosphere from the IIA lithosphere at rest on the earth's surface.
Journal
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- The Quaternary Research (Daiyonki-Kenkyu)
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The Quaternary Research (Daiyonki-Kenkyu) 38 (6), 427-434, 1999
Japan Association for Quaternary Research
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Keywords
Details 詳細情報について
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- CRID
- 1390282681472429696
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- NII Article ID
- 10004721187
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- NII Book ID
- AN0034136X
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- ISSN
- 18818129
- 04182642
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- NDL BIB ID
- 4926997
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed