Elucidating the formation of terra fuscas using Sr–Nd–Pb isotopes and rare earth elements

Hissler, Christophe; Stille, Peter; Juilleret, Jérôme; Iffly, Jean François; Perrone, Thierry; Morvan, Gilles

doi:10.1016/j.apgeochem.2015.01.011

Cited by 18 publications

(19 citation statements)

References 48 publications

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“…A leaching experiment (c.f. Hissler et al, ) on a bedrock sample collected near streamgauge C1 (where streamflow was more similar to groundwater Type IV) and a sample collected near streamgauge C6 showed that the amount of magnesium that was released from the bedrock with increasing leachate acidity was much higher for the first bedrock sample than for the second. This could explain why magnesium concentrations were higher for this particular water type as well.…”

Section: Discussionmentioning

confidence: 98%

Spatiotemporal variability in hydrochemistry of shallow groundwater in a small pre‐alpine catchment: The importance of landscape elements

Kiewiet

Freyberg

Meerveld

2019

Hydrological Processes

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Topography and landscape characteristics affect the storage and release of water and, thus, groundwater dynamics and chemistry. Quantification of catchment scale variability in groundwater chemistry and groundwater dynamics may therefore help to delineate different groundwater types and improve our understanding of which parts of the catchment contribute to streamflow. We sampled shallow groundwater from 34 to 47 wells and streamflow at seven locations in a 20‐ha steep mountainous catchment in the Swiss pre‐Alps, during nine baseflow snapshot campaigns. The spatial variability in electrical conductivity, stable water isotopic composition, and major and trace ion concentrations was large and for almost all parameters larger than the temporal variability. Concentrations of copper, zinc, and lead were highest at sites that were relatively dry, whereas concentrations of manganese and iron were highest at sites that had persistent shallow groundwater levels. The major cation and anion concentrations were only weakly correlated to individual topographic or hydrodynamic characteristics. However, we could distinguish four shallow groundwater types based on differences from the catchment average concentrations: riparian zone‐like groundwater, hillslopes and areas with small upslope contributing areas, deeper groundwater, and sites characterized by high magnesium and sulfate concentrations that likely reflect different bedrock material. Baseflow was not an equal mixture of the different groundwater types. For the majority of the campaigns, baseflow chemistry most strongly resembled riparian‐like groundwater for all but one subcatchment. However, the similarity to the hillslope‐type groundwater was larger shortly after snowmelt, reflecting differences in hydrologic connectivity. We expect that similar groundwater types can be found in other catchments with steep hillslopes and wet areas with shallow groundwater levels and recommend sampling of groundwater from all landscape elements to understand groundwater chemistry and groundwater contributions to streamflow.

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Section: Discussionmentioning

confidence: 98%

Spatiotemporal variability in hydrochemistry of shallow groundwater in a small pre‐alpine catchment: The importance of landscape elements

Kiewiet

Freyberg

Meerveld

2019

Hydrological Processes

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“…Consequently, they can largely influence REE content even if small quantity of primary phosphates is present and weathered (Braun et al, 1993, Braun et al, 1998, Aubert et al, 2001, Galan et al, 2007, Stille et al, 2009, Berger et al, 2014, Hissler et al, 2015. Some of these phosphate phases, like apatite, tend to disappear in highly weathered material, with significant organic material (Taunton et al, 2000, Berger et al, 2014.…”

Section: Accepted Manuscriptmentioning

confidence: 97%

Rare earth elements dynamics along pedogenesis in a chronosequence of podzolic soils

et al. 2016

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International audienceRare earth elements (REE) total concentration and signature in soils are known to be impacted by successive soil forming processes. So it be used as probe of soil processes. However, few studies focus on their behavior in Podzols. Podzols result from the combination of two main pedogenic processes: (1) the strong weathering in the surface eluvial horizon; (2) the downward transfer of dissolved organic matter (OM) and mobile AI and Fe, and their accumulation in the illuvial horizon beneath. Iron oxides and OM are known to have strong affinities with REE, and to play an important role in transfer and immobilization of REE. In order to decipher the relative importance of Fe oxide and OM in REE fate during podzolization, and to investigate whether REE can trace Podzol formation, we study here the evolution of REE signatures along five pedons, aged from 120 to 530 years, in a Cambisol-Podzol chronosequence located in the Cox Bay of Vancouver Island. Our results show that the REE content is strongly correlated to the general loss of elements and mineral weathering. Furthermore, the accumulation of secondary OM, Al and Fe-bearing phases does not impact the REE signature of the bulk soil. Both our results and the ones available in the literature indicate that the release of REE induced by weathering and,subsequent leaching in percolating water are the main pathways determining the REE fate in Podzols. Furthermore, we show that REE can be released and mobilized in very short periods of time during podzolization (330 years). (C) 2016 Elsevier B.V. All rights reserved

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“…However the results should be carefully evaluated. High trace element concentrations in river sediments do not necessarily reflect anthropogenic contributions, since these concentrations can be the result of naturally enriched soils and bedrocks relative to global references (Hissler et al, 2015b;N'guessan et al, 2009;Viers et al, 2009). To avoid this problem, the use of regional or even local natural reference values has been discussed and recommended for studies of trace element concentrations in river sediments (Ferrand et al, 1999;Harikumar and Jisha, 2010;Mortatti et al, 2012;Mozeto et al, 2003;Rodrigues and Nalini Junior, 2009).…”

Section: Sources Of Trace Elements and Environmental Problemsmentioning

confidence: 99%

Combined analysis of trace elements and isotopic composition of particulate organic matter in suspended sediment to assess their origin and flux in a tropical disturbed watershed

Fernandes

Hissler²,

Conceição

et al. 2016

Environmental Pollution

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Approximately 40% of the volume of domestic sewage generated in the São Paulo State is untreated and released into water bodies, causing serious pollution problems that affect the water quality and especially the suspended sediments transported by rivers. Thus, this paper investigates the seasonal influence on the origin and fluxes of Cu, Co, Cr, Zn, Cd, Ni, Sc and particulate organic matter (POM) in sediments transported by a disturbed watershed in the São Paulo State, i.e. the Sorocaba River basin. POM was characterized using particulate organic carbon, particulate organic nitrogen, C:N ratio and δC and δN stable isotopic composition. Eight sample collections of fine suspended sediments (FSS) were carried out at the mouth of the Sorocaba River from July 2009 to May 2010. During the study period, the discharge rate followed the seasonal variation trend of the past 25 years. Zn was the most abundant trace element in the FSS, followed by Cr, Cu, Ni, Co, Sc and Cd. There was a higher concentration of trace elements during the dry season, except for Sc and Co, which did not vary seasonally. The POM showed the same trend, with higher concentrations during the dry season. The calculated enrichment factors and geoaccumulation index indicated that most of the trace elements are of geogenic origin, except for Zn, which showed significant anthropogenic contributions (55%). The elemental and isotopic analysis of C and N and C:N ratio indicated that the anthropogenic origin of POM found in the FSS is related mainly to domestic sewage (97%), while the significant correlation found between the concentrations of Zn and POM indicates that the main anthropogenic source of Zn is related to this domestic sewage. The FSS load transported during the study period was of 373,194 t y, of which 87% occurred during the rainy season.

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Elucidating the formation of terra fuscas using Sr–Nd–Pb isotopes and rare earth elements

Cited by 18 publications

References 48 publications

Spatiotemporal variability in hydrochemistry of shallow groundwater in a small pre‐alpine catchment: The importance of landscape elements

Spatiotemporal variability in hydrochemistry of shallow groundwater in a small pre‐alpine catchment: The importance of landscape elements

Rare earth elements dynamics along pedogenesis in a chronosequence of podzolic soils

Combined analysis of trace elements and isotopic composition of particulate organic matter in suspended sediment to assess their origin and flux in a tropical disturbed watershed

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