Sagnotti, Leonardo; Macrì, Patrizia; Lucchi, Renata G; Rebesco, Michele; Camerlenghi, Angelo (2011): (Table 2) Radiocarbon dates of sediment cores obtained during Bio Hespérides cruise SVAIS and OGS Explora cruise EGLACOM between 2007-2008 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.819543, Supplement to: Sagnotti, L et al. (2011): A Holocene paleosecular variation record from the northwestern Barents Sea continental margin. Geochemistry, Geophysics, Geosystems, 12(11), 1-24, https://doi.org/10.1029/2011GC003810
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Abstract:
A high-resolution paleomagnetic and rock magnetic study has been carried out on sediment cores collected in glaciomarine silty-clay sequences from the continental shelf and slope of the southern Storfjorden trough-mouth fan, on the northwestern Barents Sea continental margin. The Storfjorden sedimentary system was investigated during the SVAIS and EGLACOM cruises, when 10 gravity cores, with a variable length from 1.03 m to 6.41 m, were retrieved. Accelerator mass spectrometry (AMS) 14C analyses on 24 samples indicate that the cores span a time interval that includes the Holocene, the last deglaciation phase and in some cores the last glacial maximum. The sediments carry a well-defined characteristic remanent magnetization and have a valuable potential to reconstruct the paleosecular variation (PSV) of the geomagnetic field, including relative paleointensity (RPI) variations. The paleomagnetic data allow reconstruction of past dynamics and amplitude of the geomagnetic field variations at high northern latitudes (75°-76° N). At the same time, the rock magnetic and paleomagnetic data allow a high-resolution correlation of the sedimentary sequences and a refinement of their preliminary age models. The Holocene PSV and RPI records appear particularly sound, since they are consistent between cores and they can be correlated to the closest regional stacking curves (UK PSV, FENNOSTACK and FENNORPIS) and global geomagnetic model for the last 7 ka (CALS7k.2). The computed amplitude of secular variation is lower than that outlined by some geomagnetic field models, suggesting that it has been almost independent from latitude during the Holocene.
Project(s):
Coverage:
Median Latitude: 75.642688 * Median Longitude: 14.260126 * South-bound Latitude: 74.957000 * West-bound Longitude: 12.972560 * North-bound Latitude: 76.103360 * East-bound Longitude: 17.725530
Date/Time Start: 2007-07-29T00:00:00 * Date/Time End: 2008-07-08T00:00:00
Minimum DEPTH, sediment/rock: 0.000 m * Maximum DEPTH, sediment/rock: 3.040 m
Event(s):
EG-01 * Latitude: 76.103360 * Longitude: 13.627080 * Date/Time Start: 2008-07-08T00:00:00 * Date/Time End: 2008-08-04T00:00:00 * Elevation: -1069.0 m * Recovery: 2.205 m * Location: North Greenland Sea * Campaign: EGLACOM * Basis: OGS-Explora * Method/Device: Gravity corer (GC)
EG-02 * Latitude: 75.215120 * Longitude: 13.076460 * Date/Time Start: 2008-07-08T00:00:00 * Date/Time End: 2008-08-04T00:00:00 * Elevation: -1722.0 m * Recovery: 3.055 m * Location: Norwegian Sea * Campaign: EGLACOM * Basis: OGS-Explora * Method/Device: Gravity corer (GC)
EG-03 * Latitude: 75.843590 * Longitude: 12.972560 * Date/Time Start: 2008-07-08T00:00:00 * Date/Time End: 2008-08-04T00:00:00 * Elevation: -1432.0 m * Recovery: 2.915 m * Location: Norwegian Sea * Campaign: EGLACOM * Basis: OGS-Explora * Method/Device: Gravity corer (GC)
Comment:
Data extracted in the frame of a joint ICSTI/PANGAEA IPY effort, see http://doi.pangaea.de/10.1594/PANGAEA.150150
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | ||||
| 2 | Latitude of event | Latitude | ||||
| 3 | Longitude of event | Longitude | ||||
| 4 | Elevation of event | Elevation | m | |||
| 5 | DATE/TIME | Date/Time | Geocode | |||
| 6 | Date/time end | Date/time end | Sagnotti, Leonardo | |||
| 7 | Sample ID | Sample ID | Sagnotti, Leonardo | |||
| 8 | DEPTH, sediment/rock | Depth sed | m | Geocode | ||
| 9 | Age, dated material | Dated material | Sagnotti, Leonardo | |||
| 10 | Description | Description | Sagnotti, Leonardo | |||
| 11 | Method comment | Method comm | Sagnotti, Leonardo | OC: organic carbon; HY: hydrolysis | ||
| 12 | Age, dated | Age dated | ka | Sagnotti, Leonardo | Age, 14C AMS | |
| 13 | Age, dated standard deviation | Age dated std dev | ± | Sagnotti, Leonardo | Age, 14C AMS | |
| 14 | δ13C | δ13C | ‰ PDB | Sagnotti, Leonardo | ||
| 15 | Age, minimum/young | Age min | ka | Sagnotti, Leonardo | Age, 14C calibrated, CALIB 6.0 (Reimer et al., 2009) | 1 sigma, ka BP |
| 16 | Age, maximum/old | Age max | ka | Sagnotti, Leonardo | Age, 14C calibrated, CALIB 6.0 (Reimer et al., 2009) | 1 sigma, ka BP |
| 17 | Calendar age | Cal age | ka BP | Sagnotti, Leonardo | Age, 14C calibrated, CALIB 6.0 (Reimer et al., 2009) |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
264 data points