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. 2014 Mar 13;9(3):e91419. doi: 10.1371/journal.pone.0091419

Figure 4. Stratigraphic columns, depositional setting, and sequence interpretation of the Purisima Formation.

Figure 4

Measured sections depicted include section 1 (A), section 2 (B), and section 3 (C). Key to lithofacies in (D). Age determinations (stars) listed in (E), and ages from Madrid et al. (1986), Aiello et al. (2001) and Powell et al. (2007). Vertical bar denotes sequence stratigraphic units; TST, transgressive systems tract; HST, highstand systems tract; MMFS, maximum marine flooding surface; MFS, marine flooding surface. Interpretations of depositional setting in italics. UCMP locality numbers labeled in parentheses for individual bonebeds. Vertical thickness in meters.