Marine sedimentary record of Meltwater Pulse 1a in the NW Barents Sea continental margin

• Published in: arktos
• Main Authors: Lucchi, R. G., Sagnotti, L., Camerlenghi, A., Macrì, P., Rebesco, M., Pedrosa, M. T, Giorgetti, G.
• Other Authors: Lucchi, R. G.; INOGS, Sagnotti, L.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia, Camerlenghi, A.; INOGS, Macrì, P.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia, Rebesco, M.; INOGS, Pedrosa, M. T; CSIC -­‐ Universidad de Granada, Giorgetti, G.; Università di Siena, INOGS, Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia, CSIC -­‐ Universidad de Granada, Università di Siena
• Format: Article in Journal/Newspaper
• Language: English
• Published: 2015
• Subjects: Meltwater Pulse 1a Plumites NW Barents Sea Arctic paleomagnetism deglaciation; 04. Solid Earth::04.04. Geology::04.04.04. Marine geology; Arctic; Barents Sea; Svalbard; Ice Sheet; Storfjorden
• Online Access: http://hdl.handle.net/2122/10191; http://link.springer.com/article/10.1007/s41063-015-0008-6; https://doi.org/10.1007/s41063-015-0008-6

The upper continental slope of the Storfjorden- Kveithola Trough Mouth Fans (NW Barents Sea) contains a several m-thick late Pleistocene sequence of plumites composed of laminated mud interbedded with sand/silt layers. Radiocarbon ages revealed that deposition occurred during about 130 years at a very high sedimentation rate of 3.4 cm a-1, at about 7 km from the present shelf break. Palaeomagnetic and rock magnetic analyses confirm the existence of a prominent, short-living sedimentary event. The plumites appear laterally continuous and were correlated with the sedimentary sequences described west of Svalbard and neighboring glacial depositional systems representing a major event at regional scale appointed to correspond to the deep-sea sedimentary record of Meltwater Pulse-1a. We also present new sedimentological and geochemical insights, and multi-beam data adding information on the palaeoenvironmental characteristics during MWP-1a and ice sheet decay in the NW Barents Sea. Published 7 1A. Geomagnetismo e Paleomagnetismo N/A or not JCR open