Particulate and dissolved Nd in the western Mediterranean Sea: Sources, fate and budget

Henry, Françoise; Jeandel, Catherine; Dupré, Bernard; Minster, Jean‐François

doi:10.1016/0304-4203(94)90075-2

Cited by 78 publications

(100 citation statements)

References 31 publications

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“…BP (-11.0 and -10.9; Fig. 3b) are close to both the riverine input signature and the European atmospheric input (Henry et al, 1994), suggesting that the B-A period was characterized by a mixture of terrigenous material.…”

mentioning

confidence: 68%

Radiogenic isotopes for deciphering terrigenous input provenance in the western Mediterranean

et al. 2015

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mentioning

confidence: 68%

Radiogenic isotopes for deciphering terrigenous input provenance in the western Mediterranean

et al. 2015

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“…All seawater Nd IC data published up to September 2011 to our knowledge are reported here [Piepgras et al, 1979;Piepgras and Wasserburg, 1980, 1982, 1983Stordal and Wasserburg, 1986;Piepgras and Wasserburg, 1987;Piepgras and Jacobsen, 1988;Spivack and Wasserburg, 1988;Bertram and Elderfield, 1993;Jeandel, 1993;Henry et al, 1994;Shimizu et al, 1994;Jeandel et al, 1998;Tachikawa et al, 1999;Amakawa et al, 2000;Lacan and Jeandel, 2001;Lacan, 2002;Amakawa et al, 2004aAmakawa et al, , 2004bLacan and Jeandel, 2004a, 2004cTachikawa et al, 2004;Vance et al, 2004;Dahlqvist et al, 2005;Lacan andJeandel, 2005a, 2005b;Tazoe et al, 2007aTazoe et al, , 2007bAndersson et al, 2008;Amakawa et al, 2009;Godfrey et al, 2009;Porcelli et al, 2009;Rickli et al, 2009;Zimmermann et al, 2009aZimmermann et al, , 2009bRickli et al, 2010;Copard et al, 2011;Tazoe et al, 2011]. When Nd concentration is also available, it is also reported.…”

Section: Methodsmentioning

confidence: 99%

Neodymium isotopic composition of the oceans: A compilation of seawater data

2012

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A global compilation of the neodymium isotopic composition of seawater is presented. With 880 data points, it confirms the gradual  Nd increase for intermediate/deep water masses from the northwest North Atlantic, via the Austral and Indian oceans, to the Pacific. This confirms the usefulness of this tracer for studying large scale oceanic circulation. The compilation stresses the need for documenting the oceans south of 30°S, from which less than 4% of the data are derived. The associated neodymium concentrations display heterogeneous vertical gradients amongst major oceanic basins. In addition to particle remineralization along the global thermohaline circulation, the database suggests that basin size differences also contribute to that heterogeneity.

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“…The range of variation is narrow in the Swiss samples from Etang de la Gruère (ETG, Krachler et al, 2003) but its REE-richest sample is consistent with the two other European records. Grousset et al, 1988a,b;Goldstein et al, 1984;Colin, 1993;Henry et al, 1994). Note the 206 Pb/ 207 Pb ratio for the natural dust sources is fixed at 1.20, if no Pb isotope available data.…”

Section: Misten Ree Deposition and Comparison With Other European Peamentioning

confidence: 99%

“…We use the Nd isotope signature of peat to decipher between local and distal sources (such as in Le Roux et al, 2012). The observed eNd variability (À13 to À9) in Misten peat samples is interpreted as a mixing between dust sources (Table 3) from local (Early Cambrian shales = À11.3, André et al, 1986; Early Cambrian phyllades = À10.8 and mean Paleozoic shales = À12.2, Linnemann et al, 2012), regional soils (mean European crust = À10.8, Michard et al, 1985; mean European loess = À11.6, data from Gallet et al, 1998) and desert particles (mean Saharan airbornes = À12.9 -data from Goldstein et al, 1984;Grousset et al, 1988a,b;Colin, 1993;Henry et al, 1994;Rognon et al, 1996). The eNd variability is further compared with the humification degree to evaluate the local relative humidity conditions (Fig.…”

Section: Climate-related Dust Record In Misten Peat Bog Over the Histmentioning

confidence: 99%

Deciphering human–climate interactions in an ombrotrophic peat record: REE, Nd and Pb isotope signatures of dust supplies over the last 2500years (Misten bog, Belgium)

Fagel

Allan

Roux

et al. 2014

Geochimica et Cosmochimica Acta

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, et al.. Deciphering human-climate interactions in an ombrotrophic peat record: REE, Nd and Pb isotope signatures of dust supplies over the last 2500 years (Misten bog, Belgium). Geochimica et Cosmochimica Acta, Elsevier, 2014Elsevier, , vol. 135, pp. 288-306. 10.1016Elsevier, /j.gca.2014 To cite this Fagel, Nathalie and Allan, Mohammed and Le Roux, Gaël and Mattielli, Nadine and Piotrowska, Natalia and Sikorski, Jaroslaw AbstractA high-resolution peat record from Eastern Belgium reveals the chronology of dust deposition for the last 2500 years. REE and lithogenic elements in addition to Nd and Pb isotopes were measured in a 173 cm age-dated peat profile and provide a continuous chronology of dust source and intensity. Calculated dust flux show pronounced increases c. 300 BC, 600 AD, 1000 AD, 1200 AD and from 1700 AD, corresponding to local and regional human activities combined with climate change.The Industrial Revolution samples (1700-1950 AD) are characterised by a significant enrichment in Sc-normalised REE abundance (sum REE/Sc > 25) due to intensive coal combustion. For the pre-Industrial Revolution samples, the Sc-normalised REE abundance (10 < Sum REE/Sc < 25) and the eNd variability (À13 to À9) are interpreted by a mixing between dust particles from local soils and long-range transport of desert particles. Three periods characterised by dominant-distal sources (c. 320 AD, 1000 AD and 1700 AD) are consistent with local wetter-than-average intervals as indicated by a lower degree of peat humification. Local erosion prevails during the drier (higher humification) intervals (100 AD, 600 AD). On a global scale, more distal supplies are driven during colder periods, in particular during the Oort and Maunder minima, suggesting a potential link between dust deposition and global climate. Combining REE abundance, fractionation between Light REE and Heavy REE and Nd isotope data in ombrotrophic peat allows one to distinguish between dust flux changes related to human and climate forcings.

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Particulate and dissolved Nd in the western Mediterranean Sea: Sources, fate and budget

Cited by 78 publications

References 31 publications

Radiogenic isotopes for deciphering terrigenous input provenance in the western Mediterranean

Radiogenic isotopes for deciphering terrigenous input provenance in the western Mediterranean

Neodymium isotopic composition of the oceans: A compilation of seawater data

Deciphering human–climate interactions in an ombrotrophic peat record: REE, Nd and Pb isotope signatures of dust supplies over the last 2500years (Misten bog, Belgium)

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