Correlating Pleistocene sequences across the New Jersey margin

Synchronous Palynological Changes in Early Pleistocene Sediments Off New Jersey and Iberia, and a Possible Paleoceanographic Explanation

“…and other protoperidinioid dinocysts remain common to abundant, so that G:P values remain quite low, and P:D ratios are moderate. Palynomorph Zone P2 also differs from Zone P1 in having lower relative abundances of Picea, and higher abundances of angiosperm pollen, mainly Quercus and Carya (McCarthy and Gostlin, 2000). Lingulodinium machaerophorum is most common in sparse assemblages at the erosional boundary between zones P1 and P2, possibly due to taphonomic factors.…”

“…Pollen assemblages in zone P1 are strongly dominated by gymnosperm pollen, especially Pinus, but most samples are also relatively rich in Picea (McCarthy and Gostlin, 2000). Average P:D ratios in zone P1 are fairly high and G:P values are generally low.…”

“…Hole 1072A was drilled at 39° 21.937'N, 72° 41.750'W, at a water depth of 98.1 m. Lithological Unit I, which spans the upper 152.13 m of Hole 1072A, was assigned a late Pliocene to Pleistocene age, and unconformably overlies Lithological Unit II, assigned a late Miocene to early Pleistocene age (Shipboard Scientific Party, 1998a). Using constrained cluster analysis, McCarthy and Gostlin (2000) identified three palynomorph zones, labeled P1 (0-90 mbsf), P2 (90-127 mbsf), and P3 (127-150 mbsf) in Hole 1072A (Text- Figure 2). Palynomorph zone boundaries do not coincide with sequence boundaries (labeled pp3(s) and pp4(s) in Text- Figure 3), and thus appear to be independent of sedimentological/ stratigraphic control.…”

“…The ratio of terrestrial to marine palynomorphs (pollen + spores: dinocysts, P:D) generally decreases offshore, except in taphonomically altered (McCarthy et al, submitted) and mass-wasted sediments (McCarthy and Mudie, 1998). High percentages of Brigantedinium spp., Operculodinium centrocarpum, Bitectatodinium tepikiense and Spiniferites spp., are found in modern sediments on the New Jersey margin (McCarthy, 1992;McCarthy and Gostlin, 2000), a dinocyst assemblage similar to the "slope ecofacies" of Edwards (1991) and temperate shelf facies of Mudie (1992). A similar dinocyst flora, dominated by Bitectatodinium tepikiense, Spiniferites spp., and Operculodinium centrocarpum, was found in surface sediments from ODP Sites 898 and 900 (McCarthy and Mudie, 1996).…”

A 12,000-yr pollen record off Cape Hatteras — Pollen sources and mechanisms of pollen dispersion

“…Hooghiemstra et al, 1992;Sanchez Goñi et al, 2000Roucoux et al, 2001Roucoux et al, , 2005Tzedakis et al, 2004;Desprat et al, 2007Desprat et al, , 2009Naughton et al, 2007aNaughton et al, , 2007bNaughton et al, , 2009Margari et al, 2010;Bouimetarhan et al, 2012) and western North Atlantic regions (e.g. Balsam and Heusser, 1976;de Vernal et al, 1993;McCarthy and Gostlin, 2000;Mudie and McCarthy, 2006) by directly linking both terrestrial (pollen) and marine (e.g. planktonic foraminifera, dinoflagellates, coccolithophores) proxies from the same sediment.…”