Archaeomagnetic study and rehydroxylation dating of fired-clay ceramics

Burakov, K. S.; Nachasova, I. E.

doi:10.1134/s1069351312120026

Cited by 20 publications

(17 citation statements)

References 13 publications

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“…The number of dating methods has been expanded to 18 (excluding 'Not specified') ( Figure 6), including, e.g., dendrochronology and new techniques such as rehydroxylation (Burakov and Nachasova 2013;Le Goff and Gallet 2014;Wilson et al 2009) ('Chronological metadata' section).…”

Section: Metadatamentioning

confidence: 99%

GEOMAGIA50.v3: 1. general structure and modifications to the archeological and volcanic database

et al. 2015

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Background: GEOMAGIA50.v3 is a comprehensive online database providing access to published paleomagnetic, rock magnetic, and chronological data from a variety of materials that record Earth's magnetic field over the past 50 ka.Findings: Since its original release in 2006, the structure and function of the database have been updated and a significant number of data have been added. Notable modifications are the following: (1) the inclusion of additional intensity, directional and metadata from archeological and volcanic materials and an improved documentation of radiocarbon dates; (2) a new data model to accommodate paleomagnetic, rock magnetic, and chronological data from lake and marine sediments; (3) a refinement of the geographic constraints in the archeomagnetic/volcanic query allowing selection of particular locations; (4) more flexible methodological and statistical constraints in the archeomagnetic/volcanic query; (5) the calculation of predictions of the Holocene geomagnetic field from a series of time varying global field models; (6) searchable reference lists; and (7) an updated web interface. This paper describes general modifications to the database and specific aspects of the archeomagnetic and volcanic database. The reader is referred to a companion publication for a description of the sediment database. Conclusions:The archeomagnetic and volcanic part of GEOMAGIA50.v3 currently contains 14,645 data (declination, inclination, and paleointensity) from 461 studies published between 1959 and 2014. We review the paleomagnetic methods used to obtain these data and discuss applications of the data within the database. The database continues to expand as legacy data are added and new studies published. The web-based interface can be found at http:// geomagia.gfz-potsdam.de.

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Section: Metadatamentioning

confidence: 99%

GEOMAGIA50.v3: 1. general structure and modifications to the archeological and volcanic database

et al. 2015

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“…Following Le Goff and Gallet (), however, we performed thermomagnetic analyses to select our fragments. They all possess a univectorial magnetization component, indicating a single high‐temperature (≳600°C) heating, principally carried by magnetic grains in the (titano)magnetite family, with no evidence of hydroxides, such as goethite or lepidocrocite, that would otherwise reveal the occurrence of weathering suffered by the fragments since their last firing (e.g., Burakov and Nachasova ). Moreover, the good reversibility observed between heating and cooling low‐field magnetic susceptibility versus temperature curves obtained from the studied fragments shows that their magnetic mineralogy remains stable after heating at 500°C; that is, the temperature used for the dehydroxylation experiments (see http://onlinelibrary.wiley.com/doi/10.1111/arcm.12137/suppinfo and further discussion in Le Goff and Gallet ).…”

Section: New Weighing Measurements From Syrian Medieval Ceramic Samplesmentioning

confidence: 99%

“…Several other groups around the world have implemented the RHX dating method, or a variant of it, but with no satisfactory dating results up to now (e.g., Bowen et al . ; Burakov and Nachasova ; Le Goff and Gallet ). The most recent studies by Wilson's team have been rather more focused on particular aspects of the method, such as the estimate of the mean ‘lifetime’ temperatures experienced by the samples since their last archaeological firing (referred to as the effective lifetime temperature, or ELT; Wilson et al .…”

Section: Introductionmentioning

confidence: 97%

Evidence for Complexities in the RHX Dating Method

Goff

Gallet

2014

Archaeometry

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The rehydroxylation (RHX) dating method applicable to virtually all baked clay fragments still requires testing and new developments. Here, we have obtained new weighing measurements from Syrian medieval ceramic fragments. In particular, they allow us to illustrate the scatter in RHX behaviour that may exist between different potsherds of the same age and found at the same archaeological site, thus having experienced the same effective lifetime temperature, and even between samples collected from the same artefact. Thanks to a so‐called time‐span analysis, we also report on some complexities in data sets previously obtained by Wilson et al. (2009, 2012, 2014).

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“…Burakov and Nachasova compared archeomagnetic and RHX dating of fired‐clay ceramics to study climate change over millennia. Referring to Eq.…”

Section: Application To Climate Studiesmentioning

confidence: 99%

RHX Dating of Archeological Ceramics Via a New Method to Determine Effective Lifetime Temperature

2014

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Determining the absolute chronology of ceramic artifacts has significant implications for archeological and historical research. Wilson, Hall et al. recently suggested a new technique for direct absolute dating of archeological ceramics based on a moisture‐induced chemical reaction, called rehydroxylation (RHX) dating. RHX dating proceeds by measuring the mass of chemically combined water in the ceramics in the form of OH hydroxyls, and the mass gain rate at the Effective Lifetime Temperature (ELT) that the ceramics experienced over its lifetime. To date, ELT determinations have been based on estimates of the ceramic's lifetime temperature history; taking into account weather and climate data and the depth at which the artifact was found. The uncertainty in determining the ELT can be a major component of the overall dating uncertainty. Here, we propose an alternative method which relies minimally on weather and climate data, and provides more precise determinations of the ELT and the ceramic age. The proposed method (SAS: Same Age Samples) involves a minimum of four measurements of the RHX mass gain rate constant for two ceramic samples of the same age at two temperatures. We show via simulations that the proposed SAS method can determine the ELT with a precision of 0.2 K which is comparable to the best ELT determination based on lifetime temperature history, and also comparable to available microbalance temperature resolutions of around 0.1 K. The corresponding percent age error is then 1.4%, or 43 yr for a 3000‐yr‐old ceramic. The proposed SAS method should be tested with ceramic samples of different ages, whose ELT are well‐known.

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Archaeomagnetic study and rehydroxylation dating of fired-clay ceramics

Cited by 20 publications

References 13 publications

GEOMAGIA50.v3: 1. general structure and modifications to the archeological and volcanic database

GEOMAGIA50.v3: 1. general structure and modifications to the archeological and volcanic database

Evidence for Complexities in the RHX Dating Method

RHX Dating of Archeological Ceramics Via a New Method to Determine Effective Lifetime Temperature

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