(Table 2) Uranium and thorium isotopic composition, activity ratios and ages of bivalvia shells in sediment core GIK14350, northern Germany, supplementary data to: Lomitschka, Michael; Frank, Norbert; Mangini, Augusto (1997): Untersuchungen zur Th/U-Datierung eemzeitlicher Muscheln aus Schleswig-Holstein. Meyniana, 49, 85-102
A new chemical procedure for cleaning marine carbonates was applied to remove detritus as well as metaloxide contaminations of marine shells from Eemian deposits and adjoining succession of a sediment core from Dagebüll, Schleswig- Holstein. Hence, one can significantly reduce the contamination wit...
Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Book/Monograph Research Data |
| Language: | English |
| Published: |
Bremen/Bremerhaven
PANGAEA - Data Publisher for Earth & Environmental Science
1997-07-04
|
| DOI: | 10.1594/PANGAEA.785452 |
| Subjects: | |
| Online Access: | Resolving-System, Volltext: http://dx.doi.org/10.1594/PANGAEA.785452 Resolving-System, Volltext: http://nbn-resolving.de/urn:nbn:de:tib-10.1594/PANGAEA.7854526 
|
| Summary: | A new chemical procedure for cleaning marine carbonates was applied to remove detritus as well as metaloxide contaminations of marine shells from Eemian deposits and adjoining succession of a sediment core from Dagebüll, Schleswig- Holstein. Hence, one can significantly reduce the contamination with detrital uranium and thorium. Thermal ionisation mass spectrometry was applied to determine the uranium and thorium activities used for 230Th/U dating of these shells. At least ten samples of marine bivalves of five different core sections were analysed. Samples located below a five meter thick clay layer at 19-24 m yielded an average age of 132±18 ka. Shells located above the clays at 15-20 m depth were strongly influenced by percolating groundwaters of an open system. Therefore, a reliable dating of these samples was not possible. |
|---|---|
| Item Description: | This dataset is supplement to doi:10.2312/meyniana.1997.49.85 |
| Physical Description: | Online Resource |
| DOI: | 10.1594/PANGAEA.785452 |