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| Series | Quadrangle Series 1:50,000 |
| No. | 20 [OGASAWARA SHOTO]-002 |
| Map Name | CHICHIJIMA RETTO |
| Explanatory | Geology of the Chichijima Retto District |
| Author | Susumu UMINO, Shun NAKANO |
| Publish Year | 2006 / Explanatory Note：2007 |
| Publisher | Geological Survey of Japan, AIST |
| Price | ¥3,410 ( Purchase Guide ) |
| Prefecture | TOKYO |
| Size | @790mm×@550mm |
| Download | Geological Map (Raster, GeoTIFF, KML, Vector data), Explanatory (PDF format) To this page |