Contributors:Holger Cremer, Damian Gore, Martin Melles, 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:Linda B Brubaker, Patricia M Anderson, Feng Sheng Hu
Magnetic susceptibility of sedimentcores from: (a) Idavain Lake; (b) Snipe Lake.
... Magnetic susceptibility (thin line) and Betula pollen percentages (thick line) at Idavain Lake, 600–900cm core depth.
... Quaternary Research Center, University of Washington Box 351360, Seattle WA 98195, USA
Contributors:Marcelo Cancela Lisboa Cohen, Marlon Carlos França, Dilce de Fátima Rossetti, Luiz Carlos Ruiz Pessenda, Paulo César Fonseca Giannini, Flávio L. Lorente, Antônio Álvaro Buso Junior, Darcilea Castro, Kita Macario
Stratigraphic description for core Li24 with lithological profile, pollen analysis and geochemical variables.
... Schematic representation of successive phases of sediment accumulation and vegetation change in the study area according to relative sea-level changes and sediment supply. (⋆ core locations).
... Radiocarbon dates of studied sedimentcores.
... Topographic correlation among the facies associations identified in the studied cores.
... a) Location of the study area and its geological context. b) SRTM-DEM topography of the study site and lithostratigraphic profiles. c) Location of studied sedimentcores and the spatial distribution of main geomorphological features.
List of levels sampled in core GC2 and for which the respective percentages of the sand and silt fractions were recovered. All levels are given a calibrated age obtained from the radiocarbon dates presented in Table 1 with sedimentation rates adjusted accordingly between dated horizons. Peak numbers of the sandy (aeolian) layers are listed nearest to the most prominent sandy level (shown in bold) with the respective standard deviation values given for all the adjacent (if present) sandy layers together
... Diagram to show the percentage of the sand-sized (top) and silt-sized (middle) particles recovered from Core GC2 against time in calibrated years BP. The seven aeolian peaks discussed in the text are labelled in the top diagram. The levels examined in the core (see Table 2) are represented by vertical bars in the middle diagram. The bottom diagram illustrates the change in sedimentation rate in the core and thus helps justify that the bottom portion of the core cannot be used to determine any evidence of cyclicity with certainty. Note that the sand peak younger than peak 1 was deposited during the marine transgression and is not used when discussing cyclic aeolian events in the lacustrine phase of Carpentaria.
... (A) Map of the Gulf of Carpentaria showing the location of core GC2 and (B) also the extent of Lake Carpentaria that would have existed during periods of low sea levels. (C) shows a stratigraphic log of core GC 2.
... List of samples from core GC-2 used for radiocarbon dating
... LateQuaternary... Diagram showing the calibrated ages of the mean heights for the seven peaks of aeolian particles [squares showing also error bars] recovered in core GC2. The correlation coefficient (r2=0.991) gives a re-occurrence of the peaks every ∼2,600 calibrated years. Superimposed on this are the timings of the three Heinrich events [HE 1–3] as well as the timing of the Younger Dryas [YD]. Note that the timing of the three HE does not coincide with the arid events recorded in Carpentaria, and also that LC aeolian peaks 4 and 3 coincide exactly with the onset (peak 4) and the end (peak 3) of the period of lowest sea level recorded from the tectonically-stable Bonaparte Gulf.
Contributors:Tracy D. Frank, Noel P. James, Yvonne Bone, Isabelle Malcolm, Lindsey E. Bobak
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:M. Cremer, E. Gonthier, J. Duprat, J.-C. Faugères, T. Courp
Spatial (core transect across the system) and time (isotopic stages) variation of the bulk sedimentation rate, mean carbonate content, and derived terrigenous and carbonate sedimentation rates. Cores location in Fig. 2.
... Quaternary... Core location
... Lithology, CaCO3 records and correlation of the sedimentcores across the Sao Tomé system (core location in Fig. 2). Lithologic sketch drawn from visual core description: 1) carbonate-rich mud, 2) clayey silt, 3) silt, 4) fine sand, 5) coarse sand. Tie points (fine line) indicate peak-to-peak correlations among the cores from the CaCO3 records. The limits of the isotopic stages defined in cores KS8813 and KS8817 are reported in plain lines. Data from the pilot cores (KP8813 and KP8817) are plotted separately above the Kullenberg cores (KS).
... Spatial (average by core) and temporal (average for glacial and interglacial sediments) variability of the mineral assemblages (untreated sedimentcores. Data in Table 5.
... sediment... CaCO3 %, and bulk, carbonate and terrigenous sedimentation rates
Alluvial sediments... 87Sr/86Sr and 143Nd/144Nd ratios in the silicate fraction of GS coresediments.
... δ13C (‰ VPDB) of bulk sediment organic matter from GS-10 and GS-11 cores.
... δ18O and δ13C of carbonate nodules from GS cores. Also given are sampling depths of host sediments containing the nodules.
... A–CN–K ternary plot (Nesbitt and Young, 1982) showing composition of GS-10 and GS-11 coresediments. Also shown for comparison are modern-river sediments from Himalaya (same as in Fig. 3), average values for world river sediments (Li and Yang, 2010), UCC, and PAAS.
... Temporal variations in (a and b) 87Sr/86Sr and εNd in GS coresediments; (c and d) δ18O and δ13C of carbonate nodules from GS cores; (e) δ13C of soil organic matter from GS cores; (f) Modeled record of change in the strength of SW Indian Monsoon from Prell and Kutzbach (1987); and (g) δ18O ice core record from the Guliya ice cap, Qinghai–Tibetan Plateau (Thompson et al., 1997). Also shown for comparison are 87Sr/86Sr and εNd in sediments (in a and b; Rahaman et al., 2009), and δ18O and δ13C values of carbonate nodules (in c and d; Rahaman et al., 2011) in a ~50m core from the Ganga interfluves.
Contributors:Georg Schwamborn, Hanno Meyer, Grigory Fedorov, Lutz Schirrmeister, Hans-W. Hubberten
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:Vasilios Lykousis, Aristomenis P. Karageorgis, George Th. Chronis
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.