Figure F5. Summary stratigraphic section for the lower Shark River (middle Eocene) and Manasquan (lower Eocene) formations from the Double Trouble borehole, with core recovery (Rec.), lithology (Lith.), gamma ray and resistivity log signatures, and age. Foram. = foraminifer zone, Nanno. = nannofossil zone, Syst. = systems tract. Lines Res, 16, and 64 are all resistivity logs. E and P Zones are from Berggren et al. (1995). NP Zones are from Martini (1971) and Martini and Müller (1986). E2–E5 and E8 are sequences defined by Browning et al. (1997a, 1997b). See Figure F2B for legend.