Magnetic properties of Upper Quaternary sediments from the Scotia Sea, Antarctica

Magnetic properties of bulk sediment samples taken from three cores from the Scotia Sea, Antarctica were determined using a fully-automated variable field translation balance. Fine-grained detrital magnetite is identified as the principal carrier of remanence in these Upper Quaternary sediments which were deposited under the influence of the Antarctic Circumpolar Current. Inferred magnetite grain-size is consistent with published bulk grain-size data for these cores. Pseudo-single domain grains characterize Holocene samples, and larger, multi-domain grains occur in glacial samples from two of the cores, whereas samples from the northernmost core site show dominantly multi-domain behaviour.

Details

Publication status:
Published
Author(s):
Authors: Hamilton, Norman, Pudsey, Carol J.

Date:
1 January, 2001
Journal/Source:
Antarctic Science / 13
Page(s):
61-66
Digital Object Identifier (DOI):
https://doi.org/10.1017/S0954102001000098