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. 2023 Oct 18;9(42):eadi9878. doi: 10.1126/sciadv.adi9878

Fig. 5. Schematic model of the Long Valley magmatic system interpreted from the tomographic sections.

Fig. 5.

The orientation of this interpretation is along the cross section BB′ in Fig. 3D. The shallow formations are based on the geologic section in (24). The location of the ash-rich sediments with a high VP/VS ratio and reduced wave speeds correlates well with the hydrothermal activity present in the eastern caldera area (20). The boundaries of the Sierran basin follow the 1.74 VP/VS ratio bottom contour in Fig. 3D.