Figure F25. Age model and correlation of Hole 1122C magnetic polarity zonation with the Geomagnetic Polarity Time Scale of Berggren et al. (1995) and Cande and Kent (1995). Where correlation is unambiguous, it is shown by a solid black line. Black (white) shaded intervals indicate normal (reversed) polarity and hatched shading indicates intervals where polarity could not be determined because of nonrecovery. Stippled lines show constraining biostratigraphic datums and shaded lines show magnetic polarity correlations. Undulating lines indicate stratigraphic disconformities and shaded areas indicate levels of uncertainty in datums. Correlation is constrained by the following foraminifer, nannofossil, diatom, and radiolarian datums (see discussion in "Biostratigraphy" in the "Site 1122" chapter; see also "Biostratigraphy"  in the "Explanatory Notes" chapter). Foraminifers: F1 (FO of Gr. hirsuta, 0.45 Ma), F2 (LO of Gr. puncticuloides, 0.7-0.8 Ma), F3 (several forms younger than ~3.4 Ma, see "Biostratigraphy" in the "Site 1122" chapter.), F4 (occurrence of N. continuosa and N. pachyderma, ~11.3 Ma), F5 (LO of Gr. praemenardii, ~13.0 Ma), F6 (co-occurrence of Gr. zealandica and Gr. miozea, 16.3-16.7 Ma). Nannofossils: N1 (FO of Emiliania huxleyi, 0.24 Ma), N2 (LO of Pseudoemiliania lacunosa, 0.42 Ma), N3 (LO of R. asanoi, 0.83 Ma), N4 (FO of G. parallela, 0.9 Ma), N5 (FO of R. asanoi, 1.06 Ma), N6 and N7 (range of Gephyrocapsa [large], 1.1-1.36 m.y.), N8 (FO of Gephyrocapsa [medium], 1.66 Ma), N9 (several forms co-occurring, ~3.45 Ma, see "Biostratigraphy" in the "Site 1122" chapter), N10 (LO of C. miopelagicus, > 10.4 Ma), N11 (FO of C. macintyrei, 12.34 Ma), N12 (LO of S. heteromorphus, 13.52 Ma), N13 (absence of C. premacintyrei FO, <17.4 Ma). Diatoms: D1 (LO of Hemidiscus karstenii, 0.18-0.19 Ma), D2 (H. karstenii, acme, 0.92 Ma), D3 (LO of A ingens, 0.64 Ma), D4 (LO of T. elliptipora, 0.65-0.7 Ma), D5 (LO of Nitzschia denticuloides, 11.3-22.7 Ma), D6 (LO of D. dimorpha, 12.2 Ma), D7 (FO of S. barboi, 12.5 Ma). Radiolarians: R1 (LO of Stylatractus universus, 0.46 Ma), R2 (LO of L. nautiloides, 1.93 Ma), R3 (FO of E. calvertense, 1.92 Ma).