Lawsonite-bearing pelitic schists from the Kebara Formation in the Shimizu-Misato area, Wakayama Prefecture, Southwest Japan
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- Tomiyoshi Shohei
- Department of Geoscience, Shimane University, Present address; Ehime Prefectural Museum
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- Takasu Akira
- Department of Geoscience, Shimane University
Bibliographic Information
- Other Title
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- 和歌山県清水-美里地域の毛原層のローソン石を含む泥質片岩
- ワカヤマケン シミズ ミサト チイキ ノ ケバラソウ ノ ローソンセキ オ フクム デイシツヘンガン
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Description
This is the first report of lawsonite in pelitic schists from the Kebara Formation, a tectonometamorphic unit exposed between the Sambagawa metamorphic belt and the Chichibu belt in western Kii Peninsula. Lawsonite and pumpellyite have previously been reported from basic schists in the Kebara Formation, suggesting high-P/T metamorphic conditions. The pelitic schists consist mainly of quartz, albite and chlorite along with minor carbonaceous matter and rare phengite, lawsonite, calcite and titanite. The mineral assemblage of the lawsonite-bearing pelitic schists is chlorite+phengite +lawsonite+albite+quartz. This assemblage is basically the same as that reported for lawsonite-bearing pelitic schists from the chlorite zone in the Sambagawa metamorphic belt, i.e. in the Ise area in eastern Kii Peninsula and in the Besshi nappe complex exposed along the Asemigawa River in central Shikoku. These various lawsonite-bearing pelitic schists probably experienced similar high-P/T metamorphic conditions suggesting that the entire Kebara Formation experienced similar high-P/T metamorphism to that of the chlorite zone in the Sambagawa belt.
Journal
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- The Journal of the Geological Society of Japan
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The Journal of the Geological Society of Japan 115 (10), 540-543, 2009
The Geological Society of Japan
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Details 詳細情報について
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- CRID
- 1390001206238838400
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- NII Article ID
- 130000254162
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- NII Book ID
- AN00141768
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- ISSN
- 13499963
- 00167630
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- NDL BIB ID
- 10483477
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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