Stratigraphy of the Okinawa Trough in the area west of Tokara volcanic islands.
Multi beam bathymetnc survey by Seabeam System and seismic reflection profiling in the Okinawa Trough and the adjacent area. We interpreted seismic profiles in the area west of Tokara volcanic islands to reveal the acoustic stratigraphy in the Okinawa Trough. The strata is divided into the seven formations in ascending order on the basis of these acoustic lithology. Comparison with the driling data in the Yokogansone knoll confirmed that bottom two formations (NiX and OtV) are correlated with Lower Pleistocene or older formations and volcanic rocks. The upper five formations (OtⅣ, OtⅡ, Ot Ⅰ and Eb Ⅰ) are correlated with Upper Pleistocene to the recent.
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| Main Authors: | , , |
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| Format: | Journal Contribution biblioteca |
| Language: | Japanese |
| Published: |
1989
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| Online Access: | http://hdl.handle.net/1834/16076 |
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