Aquatic geochemistry of the rare earth elements and yttrium in the Pioneer River catchment, Australia

Lawrence, Michael G., Jupiter, Stacy D. and Kamber, Balz S. (2006) Aquatic geochemistry of the rare earth elements and yttrium in the Pioneer River catchment, Australia. Marine and Freshwater Research, 57 7: 725-736.


Author Lawrence, Michael G.
Jupiter, Stacy D.
Kamber, Balz S.
Title Aquatic geochemistry of the rare earth elements and yttrium in the Pioneer River catchment, Australia
Journal name Marine and Freshwater Research   Check publisher's open access policy
ISSN 1323-1650
1448-6059
Publication date 2006
Sub-type Article (original research)
DOI 10.1071/MF05229
Volume 57
Issue 7
Start page 725
End page 736
Total pages 12
Place of publication Collingwood, VIC, Australia
Publisher CSIRO Publishing
Collection year 2006
Language eng
Subject 260300 Geochemistry
780102 Physical sciences
Abstract The rare earth elements are strong provenance indicators in geological materials, yet the potential for tracing provinciality in surface freshwater samples has not been adequately tested. Rare earth element and yttrium concentrations were measured at 33 locations in the Pioneer River catchment, Mackay, central Queensland, Australia. The rare earth element patterns were compared on the basis of geological, topographical and land-use features in order to investigate the provenancing potential of these elements in a small freshwater system. The rare earth element patterns of streams draining single lithological units with minor land modification show strongly coherent normalised behaviour, with a loss of coherence in agricultural locations. Evidence is reported for an anthropogenic Gd anomaly that may provide a useful hydrological tracer in this region since the introduction of magnetic resonance imaging in 2003. Several samples display a superchondritic Y/Ho mass ratio (up to 44), which is not explainable within the constraints imposed by local geology. Instead, it is suggested that the additional Y is derived from a marine source, specifically marine phosphorites, which are a typical source of fertiliser phosphorus. The data indicate that, under some circumstances, scaled and normalised freshwater rare earth patterns behave conservatively.
Keyword Fisheries
Limnology
Marine & Freshwater Biology
Oceanography
Fertiliser
Gadolinium Anomaly
Land Use
Lanthanides
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

 
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