Considerations of Hydration-rind Dating of Glass Artefacts: Alteration Morphologies and Experimental Evidence of Hydrogeochemical Soil-zone Pore Water Control

Morgenstein, Maury; Wicket, Carolyn L.; Barkatt, Aaron

doi:10.1006/jasc.1998.0356

Cited by 26 publications

(21 citation statements)

References 28 publications

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“…Consecutive lamellae are almost parallel to each other and to the surface of the original glass, from which the corrosion front progressed in a regular, undisturbed manner into the body of the specimen. Similar morphologies have been reported in the literature for glass from archaeological sites in England [5] and from the Egyptian Nile Delta [24]. The chemical composition of these lamellae was obtained by X-ray photoelectron spectroscopy (XPS).…”

Section: Bulkmentioning

confidence: 88%

An archaeometric study of the bulk and surface weathering characteristics of Early Medieval (5th–7th century) glass from the Po valley, northern Italy

Salviulo

Silvestri

Molin

et al. 2004

Journal of Archaeological Science

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Section: Bulkmentioning

confidence: 88%

An archaeometric study of the bulk and surface weathering characteristics of Early Medieval (5th–7th century) glass from the Po valley, northern Italy

Salviulo

Silvestri

Molin

et al. 2004

Journal of Archaeological Science

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“…First, there is not currently any robust, cost-effective protocol for measuring [OH À ] concentrations in OHD samples. The IR spectroscopic technique described by Newman et al (1986) is extensively used in geological studies (e.g. Silver et al, 1990), but is a complex, expensive laboratory procedure.…”

Section: Analysis and Discussionmentioning

confidence: 99%

“…Stevenson et al, 2000), it is necessary to understand the relationship between the two species. Newman et al (1986) reported a procedure for determining relative proportions of the two species by using infrared (IR) spectroscopy to measure the IR absorbance of the OH and H 2 O bands in obsidian, calibrated against total water content as measured by manometry (Newman et al, 1986;Silver et al, 1990).…”

Section: Hydroxyl and Total Watermentioning

confidence: 99%

“…The chemistry of the diffusing water also affects the surface structure of the glass and the nature and rate of the hydration process (Morgenstein et al, 1999). The most comprehensive treatment of water diffusion and chemical reaction in silica and aluminosilicate glasses are those of Doremus (1968Doremus ( , 1994Doremus ( , 1995Doremus ( , 2000Doremus ( , 2002, who characterized the hydration process as a ''diffusion-reaction'' process.…”

Section: Introductionmentioning

confidence: 99%

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Obsidian hydration dating: accuracy and resolution limitations imposed by intrinsic water variability

Rogers¹

2008

Journal of Archaeological Science

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“…The analogy between basaltic and nuclear glasses has been extensively documented with respect to their secondary products formed during alteration of these materials [17][18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Corrosion Mechanism in the Obsidian and its Comparison with the Nuclear Waste Glass for Long-Term Performance Assessment in the Geological Repository~!2009-08-04~!2009-10-08~!2010-03-16~!

Rani¹,

Shrivastava²,

Bajpai³

2010

TOCORRJ

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Present paper discusses experimental work on obsidian glass to understand corrosion mechanism at variable pressure temperature conditions. For comparison, Advanced Vitrification System, a nuclear waste glass was studied simultaneously under similar conditions. Owing to massive weight loss the glass samples were unable to sustain beyond 4 hour during the experiments. Corrosion experiments on both these glasses were performed under hydrothermal like conditions and observed that the changes in the experimental conditions have major control over the release of sodium and other ions from obsidian and nuclear waste glass, hence effecting corrosion mechanism. X-ray diffraction patterns of the residue obtained after the experiments on obsidian glass revealed appearance of neo-formed minerals, such as quartz, celadonite, halloysite, sodalite, heulandites and wairakite. High degree of corrosion and formation of amorphous residue observed in case of the experiments performed at 300 0 C over the granules of the nuclear waste glass. The back scattered electron images of the scanning electron microscope indicate distinctive microstructures, associated with the neo-formed minerals, and their formation is linked with the release of sodium, potassium and other ions, causing changes in the pH and conductivity of the leachate. In case of nuclear waste glass back scattered images of the scanning electron microscope indicates formation of multiple alteration layers and secondary alteration products. The surface of the pellet after the experiment shows phyllosilicate with numerous tiny spherules embedded within the structure. These experimental results when extrapolated suggest formation of amorphous silica, quartz and chalcedony as end members in case of obsidian glass whereas, formation of iron rich fayalite and greenalite can be observed in case of nuclear waste glass. The mechanism, conditions of formation of neo-formed minerals and their stability have been discussed in the paper.

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Considerations of Hydration-rind Dating of Glass Artefacts: Alteration Morphologies and Experimental Evidence of Hydrogeochemical Soil-zone Pore Water Control

Cited by 26 publications

References 28 publications

An archaeometric study of the bulk and surface weathering characteristics of Early Medieval (5th–7th century) glass from the Po valley, northern Italy

An archaeometric study of the bulk and surface weathering characteristics of Early Medieval (5th–7th century) glass from the Po valley, northern Italy

Obsidian hydration dating: accuracy and resolution limitations imposed by intrinsic water variability

Corrosion Mechanism in the Obsidian and its Comparison with the Nuclear Waste Glass for Long-Term Performance Assessment in the Geological Repository~!2009-08-04~!2009-10-08~!2010-03-16~!

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