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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

From: Seafloor hydrothermal alteration affecting magnetic properties of abyssal basaltic rocks: insights from back-arc lavas of the Okinawa Trough

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