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Earth, Planets and Space
Fig. 3. | Earth, Planets and Space

Fig. 3.

From: Caldera structure of submarine Volcano #1 on the Tonga Arc at 21°09′S, southwestern Pacific: Analysis of multichannel seismic profiling

Fig. 3.

MCS section of Line 03 with interpretive line drawings (see Fig. 2(b) for location). Triangles indicate the intersecting locations of crossing profiles of C and D. Magnetization profile in the same horizontal scale is also shown in the above. D = subsidence depth, T = topographic rim, and S = structural rim. Caldera-bounding faults, which typically dip steeply (e.g., Lipman, 1997), are arbitrarily shown as vertical (dashed lines). The inset shows the uninterpreted section. The close-up in the inset highlights toplap configuration in U-3 indicated by arrows.

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