Contributors:Martin Melles, Holger Cremer, Damian Gore, Donna Roberts
Significant species in sediments from the southern Windmill Islands
... Sedimentary units and radiocarbon ages in core PG1430 from Peterson Inlet.
... LateQuaternary palaeoclimatic, oceanographic and palaeotopographic trends in the southern Windmill Islands. Marine Isotope Stages (MIS) are taken from Frank et al. (2000). Palaeotopographic trends are according to a compilation by Kirkup et al. (2002).
... lateQuaternary... Sedimentary units and radiocarbon ages in core PG1433 from Browning Bay.
... Results of 14C dating and calibrations in cores PG1433 and PG1430
... marine sediments
Contributors:George Th. Chronis, Vasilios Lykousis, Aristomenis P. Karageorgis
Simplified sedimentcore description and AMS 14C dates (yr BP) of Units A, B and C. For core locations see Fig. 1.
... sediment fluxes... Study area location map and simplified bathymetry (depth contours in meters). Seismic reflection (3.5 kHz) tracks are indicated by solid and dashed lines and sedimentcores by open and solid circles. Radiocarbon analysis was performed in the cores TH-46 and TH-48. Geotechnical properties were measured along the cores indicated by open circles (used for this study). The North Aegean Trough (NAT) is also indicated (inset map).
... Sediment units characteristics, loads, and fluxes
... Sediment thickness maps (m) of Unit A (a), Unit B (b), and Unit C (c).
... LateQuaternary... Vertical distribution of water content, wet density and shear strength in seven representative sedimentcores from the Thermaikos Gulf shelf and slope and the Sporades Basin.
Contributors:T Garcia de Oteyza, J Knies, R Stein, K Fahl, F Niessen, B Boucsein
Hydrogen index values determined at long sedimentcores PS2741-1, PS2763-7, and PS2761-10. The Holocene time interval is marked by the shading. Dark gray, organic carbon enriched lithologies are marked as dark gray bars.
... Magnetic susceptibility records of six sedimentcores from the Kara and Laptev Sea continental margin used for core correlation. Arrows and numbers mark reservoir-corrected AMS 14C ages. Water depths are given in the lower right corner of each record.
... AMS 14C datings performed on marine bivalves from cores PS2718-6 and PS2719-1 at the “Leibniz-Labor für Altersbestimmungen” of Kiel University (see text for further explanation), and linear sedimentation rates
... Average linear sedimentation rate, bulk accumulation rates and accumulation rates of total organic carbon determined at cores PS2138-1, PS2741-1, PS2474-3, PS2767-4, PS2763-7, PS2757-8, and PS2761-10 (cf. Table 2)
... Magnetic susceptibility of long sedimentcores (see Fig. 1 for location) representing oxygen isotope stages 1–6 and used for core correlation and stratigraphic framework. Arrows and numbers mark reservoir-corrected AMS 14C ages (data from Core PS2767-4; Spielhagen, 1997, unpublished data). The Holocene time interval is marked by light gray shading. Dark gray, organic carbon enriched lithologies are marked as dark gray bars.
Clay mineralogical data: ratios of relative contents of illite to chlorite (+ kaolinite) and smectite to illite. Smectite crystallinity is computed as IB and illite crystallinity computed as HHW (smaller values correspond to higher crystallinity). Original data are indicated by small circles and plotted as thin lines; thick lines are smoothed (as in Fig. 4). Core intervals related to precession minima are marked in light grey and those relating to precessional maxima in dark grey.
... Quaternary... clastic sediments... (A) Map of the study area with location of core GeoB 3375-1 and principal oceanographic features (after Strub et al., 1998). Distribution of Quaternary volcanism and forearc alluvial basins (after Thornburg and Kulm, 1987b), continental hydrology and climatic zonation (after Heusser, 1984). (B) Geological map of Chile between 25°S and 30°S (after Zeil, 1986and Thornburg and Kulm, 1987b). Dashed lines in the northern part indicate recent dry valleys.
... Silt grain-size data. Sorting and median show cyclic variations. High resolution silt grain-size distributions are plotted for the extremes of each cycle for the carbonate-free fraction (left) and carbonate fraction (right). Additionally, the carbonate content record is shown on the right side. Thin lines with data points represent the original data set, thick lines are smoothed curves (except for silt grain-size distributions). The lines were smoothed by using a three point moving average. Core intervals related to precession minima are marked in light grey and those relating to precessional maxima in dark grey.
... Age model for sedimentcore GeoB 3375-1. Age control points (indicated by arrows, see Table 1) include three 14C AMS dates and a graphical correlation point of the δ18O record of N. pachyderma (sin.) with the SPECMAP δ18O stack (Imbrie et al., 1984). Further downcore two more control points were obtained by correlation of the median of the silt fraction (thick line represents smoothed record performed by three point moving averaging) with the precession index (after Berger and Loutre, 1991). Resulting sedimentation rates are plotted to the right.
... Age control points of core GeoB 3375-1
Modal abundance and vertical distribution of heavy minerals in core ZX1 divided into units A (20.0–14.9m), B (14.9–10.5m), C (10.5–2.7m) and D (2.7–0.5m). Percentages have been normalised to account for the presence of rock fragments in the heavy mineral assemblages. (1) Metamorphic minerals are garnet, staurolite, sillimanite, kyanite and chloritoid; (2) ZTRA represents zircon, tourmaline, rutile and apatite.
... LateQuaternarysediment log of core ZX1 showing general lithology, grain size, sediment description, heavy mineral and foraminifer assemblages in relation to sea-level change, depositional environment and climate fluctuation.
... Map showing morphological features of the Yangtze delta plain and location of core site (after Chen, 1999).
... Depths and ages of radiocarbon-dated samples from core ZX1
... Modal abundance of detrital grains in core ZX1
Contributors:Lindsey E. Bobak, Yvonne Bone, Isabelle Malcolm, Noel P. James, Tracy D. Frank
Pie charts showing the average bulk sediment composition for Facies Associations 1–5, determined using size fraction weights and visual comparison charts.
... Stratigraphic columns of piston cores from the Ross Sea. Facies Associations (FA1–6) correspond to those described in Section 5 of the text and in Figs. 3 and 4. Left-hand column in each log is a graphic representation of the relative proportions of CaCO3 (white) and siliciclastic material (black) in the sediments. Width of each log indicates average grain size (see scale at base of ELT32-44). The horizontal distance between cores along the transect is not to scale. Also shown are conventional radiocarbon ages derived from samples in various cores (further details in Table 1).
... Core photographs of Facies Association 1, barnacle gravel and sand. (A) Clean barnacle gravel facies in piston core DF87-21, c. 35–45cm. (B) Lithic-rich barnacle gravel facies in piston core ELT52-09, c. 460cm.
... Core photographs. (A) Microbioclastic–lithic sand facies in piston core NBP03-01A-03, 20–30cm. Note prominent barnacle fragments. (B) Microbioclastic sand facies from within the upper 200cm of core ELT-52-09. (C) Pelagic muddy sand facies in piston core NBP03-01A-02, c. 350cm. Note tufts of sponge spicules. (D) Muddy diamicton with igneous clasts in piston core NBP03-01A-02, 100–110cm.
... Core photographs of Facies Association 3, stylasterine gravel and sand. (A) Stylasterine gravel facies in DF87-8, 0–5cm. (B) Stylasterine sandy mud facies in DF87-9, c. 130–140cm.
... Quaternary... Biogenic sediment
Contributors:Hans-W. Hubberten, Grigory Fedorov, Lutz Schirrmeister, Georg Schwamborn, Hanno Meyer
Macro features of the coredsediments and age model with calibrated radiocarbon ages and inferred sedimentation rates.
... Resulting sedimentation scheme for slope sediment formation in lateQuaternary time in the El'gygytgyn area.
... Example of a 50 MHz GPR profile recorded in frozen polygonal ground. The alternation of concave/convex shaped features is associated with ice-wedge bodies and intra-polygonal sediments. The rectangle marks the position of the permafrost core.
... View of the slope sediment formation including sites of ice wedge outcrop and frozen sedimentcoring. Coring took place in a central polygon area near (∼10 m) the ice wedge outcrop. Note an additional site (“peat section”) where sampling of peaty sands took place in order to conduct pollen analysis (Glushkova and Smirnov, in press). See the text for more discussion.
... Age determinations of cored permafrost sediments with respect to AD 1950
Contributors:K. Wien, C. Zühlsdorff, R. Henrich, J.-B.W. Stuut
late Pleistocene... Interpretive core logs of the sediments recovered from Cap Timiris Canyon indicating hemipelagic deposits and turbiditic sequences. Sediments from the canyon (GeoB 8509–2) are heavily intercalated with thin turbidite deposits of 2 to 40 cm thickness, whereas the levee sediments (GeoB 8502–2 and GeoB 8507–3) are less influenced by turbidity currents. Question marks indicate reworked turbidite deposits. Age control for GeoB 8509–2 is shown by radiocarbon dates. Sediments of GeoB 8507–3 and the investigated upper sequence of GeoB 8502–2 from the proximal and distal levee are correlated to isotope-dated reference cores (Wien et al., 2006) and date back to 55 and ∼70 ka, respectively.
... marine sediments... Relative proportions of modelled end-member grain-size distributions for a) the distal levee site GeoB 8502–2, b) the proximal levee record GeoB 8507–3 and c) the intra-canyon core GeoB 8509–2 of Cap Timiris Canyon since late Pleistocene times. Note that the age model of sedimentcore GeoB 8509–2 is based on radiocarbon dates. According to the core-to-core correlation it would date back to ∼15 ka (Wien et al., 2006, see also 3.1 this study).
... Sediment texture with weight-percentages for a) sand, b) silt and c) clay fractions, d) terrigenous silt fraction and e) bulk carbonate content of the three gravity cores recovered from Cap Timiris Canyon (see text for details).
... Grain-size distributions for sedimentcore GeoB 8502–2 at the distal levee of Cap Timiris Canyon. Displayed are grain sizes for the bulk silt fraction (BS), the terrigenous (TS) and the carbonate silt fraction (CS), respectively, during the past 70 ka.
... Photos of the X-ray radiographs of sedimentcore GeoB 8509–2 showing bioturbated hemipelagic sediments in the lower and upper most part of both pictures as well as turbidite deposits in the middle. Picture a) of 869–890.5 cm core depth shows a fining upward turbiditic sequence with cross lamination at the base followed by fine laminated silt and fine-grained hemipelagic mud. Picture b) of 444–462 cm core depth (see Fig. 2) displays very fine-grained laminated mud deposits.
Latequaternary... Down-core analyses in core NP90-39 showing: δ18O and δ13C (‰ vs. PDB) measured on sinistral N. pachyderma; number of foraminifera per gram dry, bulk sediment; number of G. quinqueloba per gram dry, bulk sediment;. %CaCO3 of bulk sediment; sedimentation rate (cm/1000years); number of ice-rafted debris (IRD)grains >0.5μm; and number of benthic foraminifera per gram dry, bulk sediment (log scale). The numbers on the curve to the right give the radiocarbon age. The shaded horizontal bar indicates a turbidite. The column to the right shows marine oxygen isotope stages (MIS). For core location see Fig. 1.
... Down-core analyses in core M23385 showing: δ18O and δ13C (‰ vs. PDB) measured on sinistral N. pachyderma; number of foraminifera per gram dry, bulk sediment; number of G. quinqueloba per gram dry, bulk sediment; %CaCO3 of bulk sediment; sedimentation rate (cm/1000years); number of ice-rafted debris (IRD) grains >0.5mm; number of benthic foraminifera per gram dry, bulk sediment (log scale); and number of C. wuellerstorfi per gram dry, bulk sediment. The position of the Pullenia bulloides layer discussed in the text, is shown in the column to the right, together with the radiocarbon dates. The column to the right shows marine oxygen isotope stages (MIS) according to Martinson et al. (1987). Shading highlights substages 5a and 5c. For core location see Fig. 1.
... Identification number, location, depth, length and coring device for the investigated sedimentcores
... Down-core analyses in core NP90-36 showing: δ18O and δ13C (‰ vs. PDB) measured on sinistral N. pachyderma; number of foraminifera per gram dry, bulk sediment; number of G. quinqueloba per gram dry, bulk sediment; %CaCO3 of bulk sediment; sedimentation rate (cm/1000years); number of ice-rafted debris (IRD) grains >0,5mm; number of benthic foraminifera per gram dry, bulk sediment (log scale); and number of C. wuellerstorfi per gram dry, bulk sediment. The numbers on the curve to the right give the radiocarbon age. The column to the right shows marine oxygen isotope stages (MIS) according to Martinson et al. (1987). For core location see Fig. 1.
... Down-core analyses in core NP90-38 showing: δ18O and δ13C (‰ vs. PDB) measured on sinistral N. pachyderma; number of foraminifera per gram dry, bulk sediment; number of G. quinqueloba per gram dry, bulk sediment; %CaCO3 of bulk sediment; sedimentation rate (cm/1000years); number of ice-rafted debris (IRD) grains >0.5mm; number of benthic foraminifera per gram dry, bulk sediment (log scale); and number of C. wuellerstorfi per gram dry, bulk sediment. The column to the right shows marine oxygen isotope substages (MIS) according to Martinson et al. (1987). Shading highlights substages 5a, 5c and 5e. For core location see Fig. 1.
Contributors:Henri Pauc, Pierre Giresse, Jacques Déverchère
Vertical profiles of sedimentcores from the Algiers area: KMDJ01 (a), KMDJ02 (b), KMDJ03 (c), KMDJ04 (d). Basic sedimentological parameters, magnetic susceptibility, are shown with relative abundance of bio- and geo-indicators of sediment's provenance. Ages are calendar 14C ages.
... Vertical profiles of sedimentcores from the Chenoua–Tenes area: KMDJ06 (a), KMDJ07 (b), KMDJ08 (c). Basic sedimentological parameters, magnetic susceptibility, are shown with relative abundance of bio- and geo-indicators of sediment's provenance. Ages are calendar 14C ages.
... (A). Detailed maps of the Algiers area locating position of analysed sedimentcores. (B). Detailed maps of the Chenoua–Tenes area locating position of analysed sedimentcores.
... Sedimentcores... LateQuaternary... Chronology of the seven cores
... Comparison of accumulation sediment rates of seven studied sedimentcores. Thickness of debris flow interval of KMDJ01 was not taken into account.