Fractionation of yttrium and holmium during basaltic soil weathering

Thompson, Aaron; Amistadi, Mary Kay; Chadwick, Oliver A.; Chorover, Jon

doi:10.1016/j.gca.2013.06.003

Cited by 45 publications

(28 citation statements)

References 101 publications

(97 reference statements)

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“…The fractionation of Y/Ho due to preferential Y loss in both basalt profiles is well beyond the 'charge and radius' controlled behaviour of the isovalent element pair (i.e., CHARAC;Bau, 1996), consistent with the results of Thompson et al (2013). Extreme Y/Ho fractionation has traditionally been associated primarily with the aqueous transport of the REE (e.g., Nozaki et al, 1997;Lawrence and Kamber, 2006) or in highly evolved magmatic systems (Bau, 1996).…”

Section: Y/ho As a Silicate Weathering Proxysupporting

confidence: 80%

“…3) The final aim of this study is to explore the weathering-related fractionation of the geochemical twin elements Y and Ho (Babechuk et al, 2012;Thompson et al, 2013). The contrasting alteration history of the geochemically similar parent basalt of the two profiles allows an evaluation of the degree of Y/Ho fractionation across a wide range of weathering conditions, and this preliminary work indicates that the this ratio has potential as a novel tracer of weathering intensity.…”

Section: Accepted M Manuscriptmentioning

confidence: 98%

“…The weathering-induced mobility of the REE+Y is well documented (e.g., Cotten et al, 1995;Hill et al, 2000a,b;Patino et al, 2003), although it has only recently been shown that Y loss outweighs that of its geochemical twin Ho during chemical weathering, resulting in measurable Y/Ho fractionation (Babechuk et al, 2012;Thompson et al, 2013). The highprecision Y/Ho data in this study extend our understanding of their fractionation behaviour across a wide range of observed weathering intensity and we propose that Y/Ho fractionation may have potential as a chemical weathering proxy.…”

Section: Y/ho and Mobility Of Yttriummentioning

confidence: 99%

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A combined Y/Ho, high field strength element (HFSE) and Nd isotope perspective on basalt weathering, Deccan Traps, India

et al. 2015

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Please cite this article as: Babechuk, M.G., Widdowson, M., Murphy, M., Kamber, B.S., A combined Y/Ho, high field strength element (HFSE) and Nd isotope perspective on basalt weathering, Deccan Traps, India, Chemical Geology (2014), doi: 10.1016/j.chemgeo.2014 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. The chemical fingerprints of dust were identified in a paleo-flow top of the saprolite profile, A C C E P T E D M A N U S C R I P T ACCEPTED MANUSCRIPTsuggesting that dust accumulation occurred during periods of quiescence between basaltic eruptions. During protracted exposure and laterite development, the magnitude to which dust overprints the basalt chemistry increases substantially as evident from much less radiogenic Nd isotope ratios and higher Th/Nb ratios in the Bidar profile relative to the protolith basalt. A C C E P T E D M A N U S C R I P T ACCEPTED MANUSCRIPTAttempts at quantifying the magnitude of dust accumulation in the laterite based on Th enrichment indicate a mass fraction of greater than 0.5 when the dust is assumed to have the chemistry of average upper continental crust. Although mixing models between the basalt and assumed dust composition cannot unambiguously constrain the dust source, the Nd isotope mixture preserved in the laterite points to a relatively young crustal dust source (e.g., similar to loess in composition) rather than the Precambrian shield rocks in the vicinity of the

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Section: Y/ho As a Silicate Weathering Proxysupporting

confidence: 80%

Section: Accepted M Manuscriptmentioning

confidence: 98%

Section: Y/ho and Mobility Of Yttriummentioning

confidence: 99%

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A combined Y/Ho, high field strength element (HFSE) and Nd isotope perspective on basalt weathering, Deccan Traps, India

et al. 2015

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“…For the H2O leach, the basalt and shale soils show a lower Y/Ho ratio than the normalising composition (i.e., less than ~27), whereas the sandstone and shale show a (Babechuk et al, 2015;Thompson et al, 2013).…”

Section: Translocation Of Ree+y From Soil To Biomassmentioning

confidence: 93%

“…In contrast to Sr content, ultramafic igneous and calcareous rocks have the lowest concentrations of REE. In differences in complexation behaviour, such as the fractionation of Y and Ho (Thompson et al, 2013;Babechuk et al, 2015), which have highly contrasting affinity for complexation due to their differences in orbital chemistry, but are otherwise tightly coupled in the absence of ligands (Bau, 1996). Although the overall budget of REE available in soils in parent lithology and mineralogy specific, most parent materials have REE concentrations ranging from 0.1 to 100 mg/kg (Aide and Aide, 2012).…”

Section: Estimating Element Bioavailability In Soilmentioning

confidence: 99%

87Sr/86Sr and trace element mapping of geosphere-hydrosphere-biosphere interactions: A case study in Ireland

Ryan

Snoeck

Crowley

et al. 2018

Applied Geochemistry

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Quantifying the Sediment Transport Capacity in Eroding Rills Using a REE Tracing Method

2016

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Quantifying the sediment transport capacity is crucial for better understanding of water erosion process. The limit for quantifying soil erosion process is due to a lack of spatially distributed sediment data. The rare earth elements (REEs) are a group of elements with unique properties for the potential study of soil sediment transport capacity, due to its characteristics as being strongly bound to soil particles and not interfere with sediment detachment, and transportation processes. The objective of this study was to estimate the sediment transport capacity in eroding rills using the REE tracing method. Ten REE oxides (Ho2O3, Tb4O7, Eu2O3, Yb2O3, Dy2O3, Sm2O3, La2O3, Tm2O3, CeO2, and Nd2O3) were used as tracers mixed with soil. A flume experiment combined with five slopes and four flow rates was conducted. Water flow rates of 2, 4, and 8 L min−1 (L min−1) were taken for the three steeper slopes in the experiment, and flow rates of 4, 8, and 12 L min−1 were taken for the two gentle slopes. Water flow was pumped to a tan and introduced to the inlet of a flume with 8‐m long and 0·1‐m wide, which were divided into ten equal segments, with each segment containing a tabbed REE‐soil mixture. The sediment load along different length rills was calculated from the REE concentrations in the eroded material and its background reference value. With an exponential rise to maximum equation between sediment loads with the downslope distance along eroding rills, we developed a method to quantify the sediment transport capacity. The results obtained by the REE tracing method confirmed that sediment transport capacity increased as a power function with flow rate and slope gradient, with a determination of coefficient (R2) of 0·93 (p < 0·001). Sediment transport capacity was more dependent on the flow rate and less on the slope gradient with larger exponent for the flow rate. The results from this study showed that the REE method is helpful to estimate the sediment transport capacity in a concentrated flow on the sloping cropland, and to improve understanding the processes of water erosion. However, the feasibility of using the REE for quantifying sediment transport should be further investigated at the field scale on complex landscapes and under natural rainfall. Copyright © 2016 John Wiley & Sons, Ltd.

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Fractionation of yttrium and holmium during basaltic soil weathering

Cited by 45 publications

References 101 publications

A combined Y/Ho, high field strength element (HFSE) and Nd isotope perspective on basalt weathering, Deccan Traps, India

A combined Y/Ho, high field strength element (HFSE) and Nd isotope perspective on basalt weathering, Deccan Traps, India

87Sr/86Sr and trace element mapping of geosphere-hydrosphere-biosphere interactions: A case study in Ireland

Quantifying the Sediment Transport Capacity in Eroding Rills Using a REE Tracing Method

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