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  • Data  (40)
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  • 1
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    A Holocene relative sea-level database for the Baltic Sea (2021)
    GFZ Data Services
    Details
    Publication Date: 2021-08-19
    Description: Abstract
    Description: We present a compilation and analysis of 1099 Holocene relative shore-level (RSL) indicators including 867 relative sea-level data points and 232 data points from the Ancylus Lake and the following transitional phase from 10.7 to 8.5 ka BP located around the Baltic Sea. The spatial distribution covers the Baltic Sea and near-coastal areas fairly well, but some gaps remain mainly in Sweden. RSL data follow the standardized HOLSEA format and, thus, are ready for spatially comprehensive applications in, e.g., glacial isostatic adjustment (GIA) modelling. Sampling method The data set is a compilation of rather different samples from geological, geomorphological and archaeological studies. Most of the data was already published in different formats. In this compilation we homogenized the meta information of the available information according to the HOLSEA database format, https://www.holsea.org/archive-your-data, which is a modification of the recommendations given in Hijma et al. (2015). In addition to the reformatting, the majority of samples with radiocarbon dating were recalibrated with oxcal-software using the calib13 and marine13 curves. Furthermore, all sample descriptions were critically checked for consistency in positioning, levelling and indicative meaning by experts of the respective geographic region see Supplement 2. Analytical method In principle, it is a compilation, recalibration and revision of already published data. Data Processing Data of individual compilations were revised and imported into a relational database system. Therein, the data was transferred into the HOLSEA format by specified rules. By this procedure, a homogeneous categorisation was achieved without losing the original data. Also this is stored in the relational database system allowing for later updates of the transfer procedure or a recalibration of the data. Description of data table HOLSEA-baltic-yymmdd.xlsx The workbook in excel format contains 5 sheets, see https://www.holsea.org/archive-your-data: · Long-form, containing the complete information available for each sample · Short-form, a subset of attributes of the Long-form sheet · Radiocarbon, containing the radiocarbon dating information of the respective samples · U-series, a corresponding table containing the respective information of Uranium dating · References, a complete reference list of the primary publications in which the individual data sampling is described. All online sources for the compilation are included in the metadata. A full list of source references is provided in the data description file.
    Keywords: Baltic Sea ; sea-level indicator ; relative sea level ; HOLSEA ; glacial isostatic adjustment ; ice history model ; mapping function ; postgreSQL ; compound material 〉 sedimentary material 〉 sediment ; EARTH SCIENCE 〉 OCEANS 〉 COASTAL PROCESSES 〉 SHORELINES ; environment 〉 natural environment 〉 coastal environment ; In Situ Land-based Platforms 〉 FIELD SURVEYS ; In Situ/Laboratory Instruments 〉 Corers 〉 CORING DEVICES ; Phanerozoic 〉 Cenozoic 〉 Quaternary 〉 Holocene
    Type: Dataset , Dataset
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    DATA GFZ
  • 2
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    Age determination and sedimentology of sediment core Lz1101 from the Melles Lake
    PANGAEA
    In:  Supplement to: Klug, Martin; Bennike, Ole; Wagner, B (2009): Repeated short-term bioproductivity changes in a coastal lake on Store Koldewey, northeast Greenland: an indicator of varying sea-ice coverage? The Holocene, 19(4), 653-663, https://doi.org/10.1177/0959683609104040
    Details
    Publication Date: 2023-05-12
    Description: A lacustrine sediment core from Store Koldewey, northeast Greenland, was biogeochemically, biologically and sedimentologically investigated in order to reconstruct long- and short-term climatic and environmental variability. The chronology of the uppermost 189 cm of the record is based on ten 14C AMS age determinations of aquatic mosses. The record covers almost the entire Holocene and revealed changes on multidecadal to centennial scales. Dating of the oldest mosses shows that lacustrine biogenic productivity already began at around 11 cal. kyr BP. This age pre-dates the onset of biogenic productivity in other lakes on Store Koldewey by about 2 kyr. In spite of the early onset of biogenic production organic matter accumulation remained low and minerogenic sedimentation dominated. At about 9.5 cal. kyr BP moss, sulphur, organic carbon and biogenic silica content started to increase, indicating that the environment stabilized and the biogenic production in the lake adjusted to more preferable conditions. Subsequently, the biogenic productivity experienced repeated changes and varied both on long- and short-term scales. The long-term trend shows a maximum during the early Holocene thus responding to increased temperatures during the Holocene Thermal Maximum. Superimposed on the long-term trend, biogenic productivity also experienced repeated short-term fluctuations that match partly the NGRIP temperatures. The most pronounced decrease of biogenic productivity occurred at around 8.2 cal. kyr BP. Perennial lake ice coverage resulting from low temperatures is supposed to have caused decreased lacustrine biogenic productivity. From the middle Holocene to the present repeated decreases of productivity occurred that could be related to periods with severe sea-ice conditions of the East Greenland Current. Besides the dependence on air temperature it therefore demonstrates the sensitivity of lacustrine biogenic productivity in coastal high arctic areas to short-term cold spells that are mediated by the currents emanating from the Arctic Ocean. However, the data also emphasize the difficulties associated with the interpretation of lacustrine records.
    Keywords: AWI_PerDyn; Permafrost Research (Periglacial Dynamics) @ AWI
    Type: Dataset
    Format: application/zip, 3 datasets
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    DATA PANGAEA
  • 3
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    Occurrence of mammalia relicts at site Kobbelgard/Loc4 (2001)
    PANGAEA
    Details
    Publication Date: 2023-02-12
    Keywords: Age, 14C conventional; Age, maximum/old; Age, minimum/young; Age, thermo luminescence (TL); Counting, mammalia; Dicrostonyx torquatus; Dicrostonyx vel Lemmus; EUQUAM; European Quaternary Mammalia Database; Facies name/code; Gastropoda; Geologic age name; Kobbelgard/Loc4; Late Pleistocene; Lemmus lemmus; ORDINAL NUMBER; Pleistocene; Quarternary; Sample comment; Weichselian
    Type: Dataset
    Format: text/tab-separated-values, 9 data points
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    DATA PANGAEA
  • 4
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    Table 2. AIle/Ile ratios in the total hydrolysate (HYD) and free fraction of two shells of Mya truncata
    PANGAEA
    Details
    Publication Date: 2023-05-12
    Keywords: -; 458566; AWI Arctic Land Expedition; Elevation of event; Event label; G2003-13; Geological sample; GEOS; GL-Land_2003_ EastGreenland; Greenland2003; Latitude of event; Longitude of event; Loon Lake, Geographical Society Ø, East Greenland; Optional event label; Sample, optional label/labor no
    Type: Dataset
    Format: text/tab-separated-values, 14 data points
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    DATA PANGAEA
  • 5
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    Table 4. Radiocarbon age determinations of samples collected around Loon Lake
    PANGAEA
    Details
    Publication Date: 2023-05-12
    Keywords: 458558, 458559; 458561, 458562; 458565; 458567; 458568; 458570; Age, 14C AMS; Age, dated; Age, dated material; Age, dated standard deviation; AWI Arctic Land Expedition; Calendar age; Elevation of event; Event label; G2003-12; G2003-2; G2003-5; G2003-7; G2003-8; G2003-9; Geological sample; GEOS; GL-Land_2003_ EastGreenland; Greenland2003; Latitude of event; Longitude of event; Loon Lake, Geographical Society Ø, East Greenland; Reservoir effect/correction; Sample, optional label/labor no; Sample code/label; δ13C
    Type: Dataset
    Format: text/tab-separated-values, 51 data points
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    DATA PANGAEA
  • 6
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    (Table 1) Radiocarbon ages of core AB01/94 obtained in the Tromper Wiek, western Baltic Sea
    PANGAEA
    In:  Supplement to: Lemke, Wolfram; Endler, Rudolf; Tauber, Franz; Jensen, Jorn Bo; Bennike, Ole (1998): Late- and postglacial sedimentation in the Tromper Wiek northeast of Rügen (western Baltic). Meyniana, 50, 155-173, https://doi.org/10.2312/meyniana.1998.50.155
    Details
    Publication Date: 2023-05-12
    Description: In the Tromper Wiek northeast of Rügen, acoustical investigations using Air Gun, Boomer, Chirp Sonar and Sediment-Echosounder were carried out. Together with sediment core information, it allowed the identification of five seismostratigraphic units (E1 to E5). Conventional and AMS-14C-datings supported their chronostratigraphical classification. The uppermost till (E1) was incised by late glacial channels filled with glaciolacustrine sediments (E2) of the early Baltic Ice Lake stages. These were regionally overlain with a sharp unconformity by a thick (locally 〉20 m) sedimentary complex (E3) of acoustically laminated silts of freshwater origin. This lower part of the E3-complex (E3a) is overlain by fluvial to coastal silty fine sands (E3b) deeper towards the Arkona Basin. Fine plant debris in the uppermost part of sub-unit E3a yielded ages of 10,100 and 10,500 14C-years B.P., representing the final phase of the Baltic Ice Lake. The fine sands of sub-unit E3b were deposited after the final drainage of the Baltic Ice Lake. In the shallower central part of the bay, the silts of sub-unit E3a were covered by a younger unit (E4) of fine sand with plant debris. A sedge peat occurring at the basis of unit E4 yielded an age of 9,590 14C-years B.P. The fine sands overlying the unit E3 in the central part of Tromper Wiek were deposited in the Ancylus Lake. Their position at about 20 m below present sea level (b.s.l.) reflects the maximum highstand in this area. The character and distribution of the Early Holocene deposits at greater depth suggest a lake water level at about 30 m b.s.l. after this highstand. Below 25 m b.s.l. muddy Littorina Sea sediments are observed. The thickness of these muds and sandy muds increases gradually towards the Arkona Basin. Locally, they are found in a channel-like structure immediately north of Jasmund.
    Keywords: AB01/94; Age, 14C AMS; Age, 14C calibrated; Age, dated; Age, dated standard deviation; Arkona Basin; Calendar age; Calendar age, standard deviation; Core; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; Sample ID; Sample type; VC; Vibro corer; δ13C
    Type: Dataset
    Format: text/tab-separated-values, 30 data points
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    DATA PANGAEA
  • 7
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    Paleontological and sedimentological investigations of a sediment profile from northeast Greenland
    PANGAEA
    In:  Supplement to: Wagner, Bernd; Bennike, Ole; Cremer, Holger; Klug, Martin (2010): Late Quaternary history of the Kap Mackenzie area, northeast Greenland. Boreas, 39(3), 492-504, https://doi.org/10.1111/j.1502-3885.2010.00148.x
    Details
    Publication Date: 2023-06-27
    Description: The Kap Mackenzie area on the outer coast of northeast Greenland was glaciated during the last glacial stage, and pre-Holocene shell material was brought to the area. Dating of marine shells indicates that deglaciation occurred in the earliest Holocene, before 10 800 cal. a BP. The marine limit is around 53 m a.s.l. In the wake of the deglaciation, a glaciomarine fauna characterized the area, but after c. one millennium a more species-rich marine fauna took over. This fauna included Mytilus edulis and Mysella sovaliki, which do not live in the region at present; the latter is new to the Holocene fauna of northeast Greenland. The oldest M. edulis sample is dated to c. 9500 cal. a BP, which is the earliest date for the species from the region and indicates that the Holocene thermal maximum began earlier in the region than previously documented. This is supported by driftwood dated to c. 9650 cal. a BP, which is the earliest driftwood date so far from northeastern Greenland and implies that the coastal area was at least partly free of sea ice in summer. As indicated by former studies, the Storegga tsunami hit the Kap Mackenzie area at c. 8100 cal. a BP. Loon Lake, at 18 m a.s.l., was isolated from the sea at c. 6200 cal. a BP, which is distinctly later than expected from existing relative sea-level curves for the region.
    Keywords: 458554; 458555, 458556; 458558, 458559; 458560; 458561, 458562; 458563; 458564; 458565; 458566; 458567; 458568; 458569; 458570; AWI Arctic Land Expedition; COMPCORE; Composite Core; G2003-1; G2003-10; G2003-11; G2003-12; G2003-13; G2003-2; G2003-3; G2003-4; G2003-5; G2003-6; G2003-7; G2003-8; G2003-9; Geological sample; GEOS; GL-Land_2003_ EastGreenland; Greenland2003; Loon Lake, Geographical Society Ø, East Greenland; Lz1116
    Type: Dataset
    Format: application/zip, 7 datasets
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  • 8
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    Table 2 Lithological description of core Lz1104-5 from Hjort Sø
    PANGAEA
    Details
    Publication Date: 2023-06-27
    Keywords: AWI Arctic Land Expedition; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; GL-Land_2003_ EastGreenland; Gravity corer (Russian type); Greenland2003; Hjort Lake, central Store Koldewey, NE-Greenland; Lithology/composition/facies; Lz1104; RGC; Visual description
    Type: Dataset
    Format: text/tab-separated-values, 60 data points
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  • 9
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    Table 1 Radiocarbon dates of cores Lz1104-1 and Lz1104-5 from Hjort Sø
    PANGAEA
    Details
    Publication Date: 2023-06-27
    Keywords: Age, 14C AMS; Age, dated; Age, dated material; Age, dated standard deviation; AWI Arctic Land Expedition; Calendar age; Core section label; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; GL-Land_2003_ EastGreenland; Gravity corer (Russian type); Greenland2003; Hjort Lake, central Store Koldewey, NE-Greenland; Lz1104; RGC; Sample, optional label/labor no
    Type: Dataset
    Format: text/tab-separated-values, 99 data points
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  • 10
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    (Table 2) Radiocarbon age determination on sediment core Lz1103 from the Duck Lake (2009)
    PANGAEA
    Details
    Publication Date: 2023-06-27
    Keywords: Age, calculated calendar years; Age, dated; Age, dated material; Age, dated standard deviation; Age, maximum/old; Age, minimum/young; AWI Arctic Land Expedition; COMPCORE; Composite Core; DEPTH, sediment/rock; Duck Lake, central Store Koldewey, NE-Greenland; GL-Land_2003_ EastGreenland; Greenland2003; Isotope ratio mass spectrometry; Lz1103; Method comment; Sample, optional label/labor no; Sample mass; δ13C, organic carbon
    Type: Dataset
    Format: text/tab-separated-values, 74 data points
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