Table 1 Location and sampling details of the studied volcanic rock samples from the Irabu knolls of the Okinawa Trough; 6K#562R1, 6K#569R4-1, 6K#569R4-2, and 6K#569R4-3
Sample name | Latitude (°N) | Longitude (°E) | Depth (m) | Sampling date | Sampling size (cm) | Weight (kg) |
|---|---|---|---|---|---|---|
6K#562R1 | 25.2379 | 124.8815 | 1924 | 31 Jul 2000 | 16.0 × 14.0 × 9.5 | 2.0 |
6K#569R4-1 | 25.2412 | 124.8821 | 1921 | 15 Aug 2000 | 13.5 × 12.5 × 11.5 | 1.65 |
6K#569R4-2 | 25.2412 | 124.8821 | 1921 | 15 Aug 2000 | 14 × 8 × 7 | 0.85 |
6K#569R4-3 | 25.2412 | 124.8821 | 1921 | 15 Aug 2000 | 14 × 7.5 × 6.5 | 0.5 |