Publication Date:
2017-11-17
Description:
Paleomagnetic and rock magnetic data were measured on glaciomarine silty-clay successions along an E-W
sediment-core transect across the continental shelf and slope of the Kveithola paleo-ice stream system (south of
Svalbard, north-western Barents Sea), representing a stratigraphic interval spanning the last deglaciation and the
Holocene.
The records indicate that magnetite is the main magnetic mineral and that magnetic minerals are distinctly
less abundant on the shelf than at the continental slope. The paleomagnetic properties allow for the reconstruction
of a well-defined characteristic remanent magnetization (ChRM) throughout the sedimentary
successions. The stratigraphic trends of rock magnetic and paleomagnetic parameters are used for a shelf-slope
core correlation and sediment facies analysis is applied for depositional processes reconstruction. The new paleomagnetic
records compare to the PSV and RPI variation predicted for the core sites by a simulation using the
global geomagnetic field variation models SHA.DIF.14k and CALS7K.2 and closest PSV and RPI regional stack
curves. The elaborated dataset, corroborated by available 14C ages, provides a fundamental chronological framework
to constrain the coupling of shelf-slope sedimentary processes and environmental changes in the NW
Barents Sea region during and after deglaciation.
Description:
Published
Description:
10-27
Description:
1A. Geomagnetismo e Paleomagnetismo
Description:
JCR Journal
Keywords:
Paleomagnetism
;
Rock magnetism
;
Barents Sea
;
Kveithola glacial trough
;
Arctic region
;
04.05. Geomagnetism
;
Paleomagnetism
;
Environmental Magnetism
;
Paleoclimate
Repository Name:
Istituto Nazionale di Geofisica e Vulcanologia (INGV)
Type:
article
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