Beryllium isotope signatures of ice shelves and sub-ice shelf circulation

Simple item page
dc.contributor.authorWhite, DAen_AU
dc.contributor.authorFink, Den_AU
dc.contributor.authorPost, ALen_AU
dc.contributor.authorSimon, KJen_AU
dc.contributor.authorGalton-Fenzi, BKen_AU
dc.contributor.authorFoster, Sen_AU
dc.contributor.authorFujioka, Ten_AU
dc.contributor.authorJeromson, MRen_AU
dc.contributor.authorBlaxell, Men_AU
dc.contributor.authorYokoyama, Yen_AU
dc.date.accessioned2021-12-16T21:22:15Zen_AU
dc.date.available2021-12-16T21:22:15Zen_AU
dc.date.issued2019-01-01en_AU
dc.date.statistics2021-11-16en_AU
dc.description.abstractBe isotopes are a useful tracer of sediment source and transport pathways but have not been widely tested in glacio-marine environments. We measured Be isotopes in a range of depositional environments from open marine, sub-ice shelf and subglacial settings throughout Prydz Bay, one of Antarctica's largest ice drainage systems. We find that strong sub-ice shelf and bottom current circulations can advect 10Be-rich open marine sediments into an ice shelf cavity, and 10Be-poor terrestrial sediments onto the continental shelf at the ice shelf outflow, meaning that 10Be concentrations reflect sub-ice shelf circulation patterns rather than depositional environment. However, HCl-extractable 10Be/9Be ratios can provide a more robust discrimination of sediment deposited in open marine and sub-ice shelf settings. Thus, Be isotopes are a useful tracer of both environmental setting and sub-ice shelf circulation strength in both modern and paleo-ice sheet margins. Crown Copyright © 2018 Published by Elsevier B.V.en_AU
dc.identifier.citationWhite, D. A., Fink, D., Post, A. L., Simon, K., Galton-Fenzi, B., Foster, S., Fujioka, T., Jeromson, M. R., Blaxell, M., Yokoyama, Y. (2019). Beryllium isotope signatures of ice shelves and sub-ice shelf circulation. Earth and Planetary Science Letters, 505, 86-95, doi:10.1016/j.epsl.2018.10.004en_AU
dc.identifier.issn0012-821Xen_AU
dc.identifier.journaltitleEarth and Planetary Science Lettersen_AU
dc.identifier.pagination86-95en_AU
dc.identifier.urihttps://doi.org/10.1016/j.epsl.2018.10.004en_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/12507en_AU
dc.identifier.volume505en_AU
dc.language.isoenen_AU
dc.publisherElsevieren_AU
dc.subjectIceen_AU
dc.subjectBeryllium 10en_AU
dc.subjectIsotopesen_AU
dc.subjectSedimentsen_AU
dc.subjectAntarcticaen_AU
dc.subjectAdvectionen_AU
dc.titleBeryllium isotope signatures of ice shelves and sub-ice shelf circulationen_AU
dc.typeJournal Articleen_AU
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
1-s2.0-S0012821X18305922-main.pdf
Size:
1.86 MB
Format:
Adobe Portable Document Format
Description:
Download
License bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
1.63 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Journal Articles