Rare earth element contents of Jurassic fish and reptile teeth and their potential relation to seawater composition (Anglo-Paris Basin, France and England)

Picard, Stéphanie; Lécuyer, Christophe; Barrat, Jean‐Alix; Garcia, Jean-Pierre; Dromart, G.; Sheppard, Simon M.F.

doi:10.1016/s0009-2541(01)00424-7

Cited by 131 publications

(54 citation statements)

References 37 publications

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“…6) might be attributed to minor contributions from upwelling currents, insignificant but small terrestrial input of nutrients, and/or small variations in the REE composition of seawater during the Paleozoic (cf. Picard et al, 2002;Lecuyer et al, 2004;Shields and Webb, 2004). This may suggest, at this stage, that low temperature (0-30 ·q does not seem to significantly influence fractionation of REEs in primary carbonates during bLMC precipitation.…”

Section: Temperature Effectmentioning

confidence: 77%

“…In light of only two blMC REE datasets for the geologic past (Eocene and Silurian), we prefer to defer any further and detailed discussion on the potential secular variation of seawater REE content to a future time when more results may be available to us. Absolutely, more analyses of well-preserved brachiopod bLMC from other time periods are required to test this 'open' hypothesis of secular seawater-REE variation (e.g., Picard et al, 2002;Shields and Webb, 2004). This hypothesis and its verification must include specimens (preserved blMC) from epeiric seas as well as ones from open ocean settings (cf.…”

Section: Secular/extrinsic Environmental Ree Seawater Variationmentioning

confidence: 99%

“…Among the commonly studied materials are foraminiferas (Palmer, 1985 ), corals (Scherer and Seitz, 1980;Sholkovitz and Shen, 1995), other carbonate allochems (e.g., Nothdurft et al, 2004), conodonts (e.g., Wright et al, 1987), fish teeth (Grandjean et al, 1987), reptile teeth (Picard et al, 2002), phosphate , chert (Murray et al, 1992), and reefal microbialites (Webb and Kamber, 2000). However, to some degree all of these potential proxies suffer from problems that complicate their REE signals and thus the subsequent interpretation of the seawater composition and other oceanographic processes (Webb and Kamber, 2000;Bright et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

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Biogenic and abiogenic low-Mg calcite (bLMC and aLMC): Evaluation of seawater-REE composition, water masses and carbonate diagenesis

et al. 2011

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Biogenic low-Mg calcite (brachiopods) Burial calcite cements lREE, REESN seawater compositions Diagenetic lREE and REEsN variations The l;REE and shale-normalized (PAAS) REEsN values of modern brachiopods (biogenic low-Mg calcite: blMC) represented by several species from high-to low latitudes, from shallow-to deep waters and from warm-and cold-water environments, define three distinct average 'seawater' trends. The warm-and cold-water brachiopods define two indistinguishable (p < O.OSO) groups that mimic open -ocean seawater REE chemistry, exhibiting the typical LREE enrichment with a slightly positive to negative Ce anomaly followed by an otherwise invariant series. Other recent brachiopods from an essentially siliciclastic seabed environment are distinct in both l;REE and REEsN trends from the previous two populations, showing a slight enrichment in the MREEs and an increasing trend in the HREEs. Other groups of modern brachiopods are characterized by elevated REEsN trends relative to the 'normal'groups as well as by complexity of the series trends.The most characteristic feature is the decrease in the HREEs in these brachiopods from areas of unusual productivity (i.e., such as upwelling currents, fluvial input and aerosol dust deposition). Preserved brachiopods from the Eocene and Silurian exhibit REEsN trends and Ce anomalies similar to that of the 'open-ocean' modern brachiopods, although, their enriched l;REE concentrations suggest precipitation ofblMC influenced by extrinsic environmental conditions. Preservation of the bLMC was tested by comparing the l;REE and REEsN trends of preserved Eocene brachiopods to those of Oligocene brachiopods that were altered in an open diagenetic system in the presence of phreatic meteoric-water. The altered blMC is enriched by approximately one order of magnitude in both l;REE and REEsN trends relative to that in blMC of their preserved counterparts. Similarly, the l;REE and REEsN of preserved Silurian brachiopod blMC were compared to those of their enclosing altered lime mudstone, which exhibits features of partly closed system, phreatic meteoric-water diagenesis. Despite these differences in the diagenetic alteration systems and processes, the l;REEs and REEsN trends of the blMC of altered brachiopods and of originally mixed mineralogy lime mudstones (now diagenetic low-Mg caldte) are enriched by about one order of magnitude relative to those observed in the coeval and preserved blMC. In contrast to the changes in l;REE and REEsN of carbonates exposed to phreatic meteoric-water diagenesis, are the REE compositions oflate burial calcite cements precipitated in diagenetically open systems from burial fluids. The l;REE and REEsN trends of the burial cements mimic those of their host lime mudstone, with all showing slight LREE enrichment and slight HREE depletion, exhibiting a 'chevron' pattern of the REEsN trends.The overall enrichment or depletion of the cement REEsN trends relative to that of their respective host rock material reflects not only the openness of the diag...

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Section: Temperature Effectmentioning

confidence: 77%

Section: Secular/extrinsic Environmental Ree Seawater Variationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Biogenic and abiogenic low-Mg calcite (bLMC and aLMC): Evaluation of seawater-REE composition, water masses and carbonate diagenesis

et al. 2011

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“…Phosphatic minerals can contain high REE concentrations, which are directly related to the mineral genesis [8,35,36]. However, there is a difference between LREE and HREE as regard to their enrichment in phosphatic minerals, with a predominance of a negative anomaly of Ce [37,38].…”

Section: Sources and Fate Of Ree In Soilsmentioning

confidence: 99%

Rare Earth Elements in the Soil Environment

et al. 2016

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Rare earth elements (REE) are a homogenous group of 17 chemical elements in the periodic table that are key to many modern industries including chemicals, consumer electronics, clean energy, transportation, health care, aviation, and defense. Moreover, in recent years, they have been used in agriculture. One of the consequences of their worldwide use is the possible increase of their levels in various environmental compartments. This review addresses major topics concerning the study of REE in the soil environment, with special attention to the latest research findings. The main sources of REE to soils, the contents of REE in soils worldwide, and relevant information on the effects of REE to plants were explored. Ecological and human health risk issues related to the presence of REE in soils were also discussed. Although several findings reported positive effects of REE on plant growth, many questions about their biological role remain unanswered. Therefore, studies concerning the actual mechanism of action of these elements on cellular and physiological processes should be further refined. Even more urgent is to unveil their chemical behavior in soils and the ecological and human health risks that might be associated with the widespread use of REE in our modern society.

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“…However, marine and continental water, as well as pore water, are commonly characterised by a negative Ce anomaly, because cerium is quickly oxidised and easily bound by various ligands, solid particles, Fe-Mn compounds, and other authigenic phases (e.g., Alibo and Nozaki, 1999;Dia et al, 2000;Haley et al, 2004;Pattan et al, 2005;Leybourne and Johannesson, 2008;Pourret et al, 2008). The negative Ce anomaly is commonly inherited by vertebrate bioclasts (e.g., Picard et al, 2002;Patrick et al, 2004;Labs-Hochstein and MacFadden, 2006;Tütken et al, 2008;Rogers et al, 2010;Kowal-Linka et al, 2014). The positive Ce anomaly in the Gogolin bones therefore requires the recognition of an additional source of Ce 3+ , and conditions that enabled the reduction of Ce 4+ .…”

Section: Ce Anomaly In the Bonesmentioning

confidence: 99%

Variability of trace element uptake in marine reptile bones from three Triassic sites (S Poland): Influence of diagenetic processes on the host rock and significance of the applied methodology

Kowal-Linka

Jochum

2015

Chemical Geology

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Rare earth element contents of Jurassic fish and reptile teeth and their potential relation to seawater composition (Anglo-Paris Basin, France and England)

Cited by 131 publications

References 37 publications

Biogenic and abiogenic low-Mg calcite (bLMC and aLMC): Evaluation of seawater-REE composition, water masses and carbonate diagenesis

Biogenic and abiogenic low-Mg calcite (bLMC and aLMC): Evaluation of seawater-REE composition, water masses and carbonate diagenesis

Rare Earth Elements in the Soil Environment

Variability of trace element uptake in marine reptile bones from three Triassic sites (S Poland): Influence of diagenetic processes on the host rock and significance of the applied methodology

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