Figure F30. Micropaleontological and paleomagnetic age datums, micropaleontological group abundances, and rank abundances of important paleoenvironmental indicators, Site U1417. Data are a composite of Holes U1417A–U1417E. Abundance: D = dominant, A = abundant, C = common, F = few, R = rare, P or X = present, B = barren. A. Paleomagnetic data with chron boundary ages (JM = Jaramillo, OD = Olduvai). B. Biostratigraphic zones and boundary ages from diatoms, radiolarians, and planktonic foraminifers. C–F. Group abundances for (C) diatoms, (D) radiolarians, (E) planktonic foraminifers, and (F) benthic foraminifers. G, H. Rank abundances of (G) cold-water indicating diatom taxa and (H) litoral and neritic diatom taxa plotted using the highest abundance rank of individual species abundances within each species suite estimated from the number of valves per field of view. I. Rank abundances of cold-water radiolarian taxa estimated from the proportional abundances of cold-water species in the total radiolarian assemblage. J. Rank abundance of dextral coiling Neogloboquadrina pachyderma, a warm-water indicator, estimated from its proportional abundance in the total foraminiferal assemblage.
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