Figure F7. Details of isochrons inferred from magnetic anomalies near Site 1256. Shading shows normal magnetic polarity, based on digitized reversal boundaries (small circles, after Wilson, 1996). Bold line shows location of Guatemala basin MCS tracklines from the site survey conducted in March-April 1999 (see Figs. F8 and F9). Anomaly ages: 5A = ~12 Ma, 5B = ~15 Ma, and 5D = ~17 Ma.

Figure F7. Details of isochrons inferred from magnetic anomalies near Site 1256. Shading shows normal magnetic polarity, based on digitized reversal boundaries (small circles, after Wilson, 1996). Bold line shows location of Guatemala basin MCS tracklines from the site survey conducted in March-April 1999 (see Figs. F8 and F9). Anomaly ages: 5A = ~12 Ma, 5B = ~15 Ma, and 5D = ~17 Ma.