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Lee, Tq. |
This study presents the directional paleomagnetic secular variation pattern of core MD972151 taken from the southwestern South China Sea during the IMAGES III - IPHIS Cruise in 1997. A total of 281 samples taken from this; core were subjected to AF demagnetization to analyze their characteristic remanent magnetization. The results indicated a reversed event at depth of between 21.7 and 23.8 meters. It was identified as the Blake Event, and has an age interval of about 130 ka. Another short reversed event was found near the bottom of the core. This was tentatively described as an excursion that occurred at about 150-160 ka. These assignments were in very close agreement with the results of oxygen isotope analysis. Consequently, the core under study was... |
Tipo: Text |
Palavras-chave: Paleomagnetic secular variation; VGP; South China Sea; IMAGES. |
Ano: 1999 |
URL: https://archimer.ifremer.fr/doc/00239/35074/34552.pdf |
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Stoner, Joseph S.; Jennings, Anne; Kristjansdottir, Greta B.; Dunhill, Gita; Andrews, John T.; Hardardottir, Jorunn. |
We report the intercalibration of paleomagnetic secular variation (PSV) and radiocarbon dates of two expanded postglacial sediment cores from geographically proximal, but oceanographically and sedimentologically contrasting settings. The objective is to improve relative correlation and chronology over what can be achieved with either method alone. Core MD99-2269 was taken from the Hunafloaall Trough on the north Iceland shelf. Core MD99-2322 was collected from the Kangerlussuaq Trough on the east Greenland margin. Both cores are well dated, with 27 and 20 accelerator mass spectrometry (14)C dates for cores 2269 and 2322, respectively. Paleomagnetic measurements made on u channel samples document a strong, stable, single-component magnetization. The... |
Tipo: Text |
Palavras-chave: Holocene; Paleomagnetic secular variation; Radiocarbon dating. |
Ano: 2007 |
URL: https://archimer.ifremer.fr/doc/00233/34436/32934.pdf |
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