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Rare earth elements as provenance indicators in North Australian estuarine and coastal marine sediments

Munksgaard, Niels C., Lim, Kezia and Parry, David L. (2003). Rare earth elements as provenance indicators in North Australian estuarine and coastal marine sediments. Estuarine, Coastal and Shelf Science,57(3):399-409.

Document type: Journal Article
Citation counts: Scopus Citation Count Cited 26 times in Scopus Article | Citations

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Title Rare earth elements as provenance indicators in North Australian estuarine and coastal marine sediments
Author Munksgaard, Niels C.
Lim, Kezia
Parry, David L.
Journal Name Estuarine, Coastal and Shelf Science
Publication Date 2003
Volume Number 57
Issue Number 3
ISSN 1096-0015   (check CDU catalogue  open catalogue search in new window)
Scopus ID 2-s2.0-0041707938
Start Page 399
End Page 409
Total Pages 11
Place of Publication Holland
Publisher Elsevier Science
Field of Research 0402 - Geochemistry
0405 - Oceanography
0602 - Ecology
HERDC Category C1 - Journal Article (DEST)
Abstract Rare earth elements (REE) in three grain size fractions of clay-dominated estuarine and coastal sediments from the North Australian coastline have been investigated for use as potential provenance indicators. Comparisons of data based on instrumental neutron activation analysis and inductively coupled plasma mass spectrometry revealed that HF digestions of zircon-bearing samples resulted in unsatisfactory recovery of REE. Instead, a relatively simple, fast and safe partial digestion using HClO4 + HNO3 was used to extract REE mainly from clay minerals while excluding extraction of REE from zircons. A comparison with published data for primary rock units within river catchments showed that the main REE systematics has been preserved in downstream clay-rich sediments. Analysis of variance of La/Gd-(PAAS), La/Yb-(PAAS) and Eu/Eu*((PAAS)) ratios in five areas showed that the <63 mum fraction possessed the greatest discriminating power. All five areas could be distinguished from each other at highly significant levels based on one or more of these ratios.
Keywords rare earth elements
instrumental neutron activation analysis
inductively coupled plasma mass spectrometery
digests
clays
provenance
source-mass spectrometry
broken-hill
trace
lanthanides
digestion
samples
zircon
age
DOI http://dx.doi.org/10.1016/S0272-7714(02)00368-2   (check subscription with CDU E-Gateway service for CDU Staff and Students  check subscription with CDU E-Gateway in new window)
 
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Created: Fri, 12 Sep 2008, 08:35:25 CST by Administrator