Iron and oxygen isotope systematics during corrosion of iron objects: a first approach

Rose, Thomas; Télouk, Philippe; Fiebig, Jens; Marschall, Horst R.; Klein, Sabine

doi:10.1007/s12520-020-01072-8

Cited by 4 publications

(5 citation statements)

References 102 publications

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“…Opposite to what we observed, biosynthesis of hydrogen containing molecules typically leads to enrichment of 2 H in the remaining water [ 97 ]. Isotope fractionation of oxygen in water during the corrosion of iron metal is poorly understood, especially at low temperature [ 104 ]. Isotope fractionation in reactions producing molecular hydrogen, such as oxidation of iron minerals, generally lead to extreme 2 H depletion in the H 2 gas (e.g., Lin et al (2005) [ 105 ]), and thus cannot account for the observed 2 H depletion in water.…”

Section: Discussionmentioning

confidence: 99%

Rock Surface Fungi in Deep Continental Biosphere—Exploration of Microbial Community Formation with Subsurface In Situ Biofilm Trap

et al. 2020

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Fungi have an important role in nutrient cycling in most ecosystems on Earth, yet their ecology and functionality in deep continental subsurface remain unknown. Here, we report the first observations of active fungal colonization of mica schist in the deep continental biosphere and the ability of deep subsurface fungi to attach to rock surfaces under in situ conditions in groundwater at 500 and 967 m depth in Precambrian bedrock. We present an in situ subsurface biofilm trap, designed to reveal sessile microbial communities on rock surface in deep continental groundwater, using Outokumpu Deep Drill Hole, in eastern Finland, as a test site. The observed fungal phyla in Outokumpu subsurface were Basidiomycota, Ascomycota, and Mortierellomycota. In addition, significant proportion of the community represented unclassified Fungi. Sessile fungal communities on mica schist surfaces differed from the planktic fungal communities. The main bacterial phyla were Firmicutes, Proteobacteria, and Actinobacteriota. Biofilm formation on rock surfaces is a slow process and our results indicate that fungal and bacterial communities dominate the early surface attachment process, when pristine mineral surfaces are exposed to deep subsurface ecosystems. Various fungi showed statistically significant cross-kingdom correlation with both thiosulfate and sulfate reducing bacteria, e.g., SRB2 with fungi Debaryomyces hansenii.

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Section: Discussionmentioning

confidence: 99%

Rock Surface Fungi in Deep Continental Biosphere—Exploration of Microbial Community Formation with Subsurface In Situ Biofilm Trap

et al. 2020

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“…Overall, this illustrates the need to analyse iron samples not corroded by seawater for archaeological provenance studies. Rose et al (2020) reached an opposite conclusion and argued for the absence of Fe isotope fractionation during the corrosion of iron artefacts. However, we consider that these authors most likely missed significant fractionation between corroded and not corroded samples because of insufficiently precise and accurate Fe isotope measurements.…”

Section: Corroded Iron Samplesmentioning

confidence: 99%

“…Moreover, they did not report Fe isotope determinations of (geological) reference materials, as done here and in our previous work (Milot et al, 2016) to assess data accuracy. The analytical uncertainties reported by Rose et al (2020) are thus most likely underestimated, hence the reason why they could not see the small isotopic effect imparted by iron corrosion, although the way corrosion was sampled and compared with non-corroded iron bars could be another explanation.…”

Section: Corroded Iron Samplesmentioning

confidence: 99%

Investigating the provenance of iron bars from Les Saintes‐Maries‐de‐la‐Mer Roman shipwrecks (south‐east France) with iron isotopes

et al. 2021

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Fe isotopes were used to determine the origin of iron bars from Les Saintes-Maries-de-la-Mer Roman shipwrecks, which was a major archaeological finding at the end of the 20th century in France. Their Fe isotope composition was measured by multi collectorinductively coupled plasma-mass spectrometry (MC-ICP-MS) after chemical Fe purification. The results allowed us to suggest provenances that were compared with those based on trace element analyses of slag inclusions. For most of the bars, we validate the provenance hypotheses previously proposed. Two bar groups originate from the Montagne Noire metallurgical district (south-west France), whereas a third group comes from another source, not clearly identified so far. In this context of Roman iron production, we argue for a non-spatially segmented production, where bars were manufactured close to smelting sites. Combined trace element and Fe isotope analyses on the same objects provide crucial information about the nature of their ore source. The elemental heterogeneity, positive Eu anomaly and Fe isotopic homogeneity of several bars were inherited from gossan-type ores, whereas the negative Eu anomaly and variable Fe isotopes signature of others most likely correspond to sedimentary iron ores. This study demonstrates that combined trace element and Fe isotopes analyses in a well-defined archaeological context is a promising approach for provenance studies of iron metals of archaeological interest.

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“…3,4 Nevertheless, some studies showed negligible isotope fractionation (within experimental error) for metal objects made of, for instance, Fe, Sn or Pb. [5][6][7] Different approaches based on the use of (trace) element patterns have been widely used for assessing the provenance of metal artefacts. 8,9 However, interpretation of such elemental ngerprints is oen not straightforward, especially when dealing with elements that have different affinities for metal and slag.…”

Section: Introductionmentioning

confidence: 99%

“…3,4 Nevertheless, some studies showed negligible isotope fractionation (within experimental error) for metal objects made of, for instance, Fe, Sn or Pb. 5–7…”

Section: Introductionmentioning

confidence: 99%

Capabilities and limitations of Pb, Sr and Fe isotopic analysis of iron-rich slags: a case study on the medieval port at Hoeke (Belgium)

Biernacka,

Costas-Rodríguez,

De Clercq

et al. 2024

RSC Adv.

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Iron and oxygen isotope systematics during corrosion of iron objects: a first approach

Cited by 4 publications

References 102 publications

Rock Surface Fungi in Deep Continental Biosphere—Exploration of Microbial Community Formation with Subsurface In Situ Biofilm Trap

Rock Surface Fungi in Deep Continental Biosphere—Exploration of Microbial Community Formation with Subsurface In Situ Biofilm Trap

Investigating the provenance of iron bars from Les Saintes‐Maries‐de‐la‐Mer Roman shipwrecks (south‐east France) with iron isotopes

Capabilities and limitations of Pb, Sr and Fe isotopic analysis of iron-rich slags: a case study on the medieval port at Hoeke (Belgium)

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