Dissertations / Theses on the topic 'Archaeological chemistry'
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1
Edwards, Robert. "The chemistry of tin and lead archaeological artefacts." Thesis, Cardiff University, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.366456.
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The present work explores the long term corrosion phenomena of lead and tin in saline and other conditions. Thermodynamic results are presented for the minerals abhurite, blixite, mendipite, paralaurionite, stannite and the compounds Pb706Cl2.2H20 and Sn30(OH)2S04 at 298.2K and P = 105 Pa. At this temperature laurionite is stable, rather than its dimorph, paralaurionite, and mendipite is in fact metastable, being thermodynamically stable above 29 0 C. Kinetic influences are significant with respect to the sequence of formation of solid phases in the PbO - H20 - HCl system, and these have been elucidated for some important reactions. Penfieldite and fiedlerite appear to be metastable at all temperatures at 105 Pa. These results have been used to develop a model for the formation of lead(II) oxy- and hydroxy- chloride phases that are known as minerals and as corrosion products of lead-containing artefacts. The effect of C02 on the system is also discussed. A new synthesis of sn30(OH)2S04 is described, and its stability constant in aqueous solution has been determined by direct ~easurement of the activities of Sn2+ and s04 2- using ion selective electrodes. The true formula·of abhurite is Sn2l06(OH)14Cl16' which corresponds to a synthetic phase of known crystal structure. The results have been used to assess the relative stabilities of these compounds in the natural environment and their modes of occurrence in relation to other secondary Sn(II) and Sn(IV) species. Finally, some divalent metal hexahydroxystannates have been made, and their role in the corrosion of tin and its alloys assessed. The electrochemical oxidation of stannite has been studied and some correlation has been made between the supergene minerals formed and solution chemistry.
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Walton, Marc Sebastian. "A materials chemistry investigation of archaeological lead glazes." Thesis, University of Oxford, 2004. http://ora.ox.ac.uk/objects/uuid:eb3eb473-d434-4f45-ac78-03b6f6de3649.
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In this thesis, the fabrication technology of Roman lead glazes were examined using a number of materials science techniques: namely, electron probe microanalysis, X-ray diffraction, and inductively coupled plasma atomic emission spectroscopy. The overall aim of this work was to discern particular technological styles for a wide group of lead glazes by quantifying the chemical and microstructural features of glaze production. Using experimental replication, it was found that two basic methods of glazing could be identified chemically. When applying PbO alone to an earthenware ceramic, the resulting glaze was in equilibrium with the ceramic as indicated by flat compositional profiles obtained along the glaze cross-section. However, when applying PbO·SiO2 mixtures to earthenware ceramics, gradient profiles indicative of diffusive mass transfer were obtained from the glaze cross-section. On the basis of these chemical criteria, these two methods of glazing were identified in archaeological material. It has been determined that the earliest lead glazes from Anatolia and Italy (approximately 1st century B.C.) were made using PbO·SiO2 mixtures applied to calcareous clays with Fe and Cu oxides added as colourants. Later production (post 2nd century A.D.), seems to have employed PbO alone applied to non-calcareous clays with no intentionally added colourants. The Roman production of lead glazes was compared to both those of Late Antiquity (4th – 10th centuries A.D.) which continued to use PbO applied to non-calcareous clays, and to those of Byzantine and Islamic contexts (8th – 14th centuries A.D.) which seem to have used PbO·SiO2 mixtures applied to both calcareous and non-calcareous clays. It is also argued that the technological features of the Byzantine and Islamic glaze production shared more in common with the contemporary Chinese lead glazing tradition (the Sancai wares of the 7th century A.D.) which also used PbO·SiO2 mixtures applied to non-calcareous clays, than with the Late Antique glazing tradition.
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Hodgins, Gregory W. L. "Investigating methods of identifying pre-Renaissance artists' paints and glues." Thesis, University of Oxford, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.310530.
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Corr, Lorna T. "The evaluation of a multi-proxy stable isotope approach to palaeodietary reconstruction." Thesis, University of Bristol, 2003. http://hdl.handle.net/1983/c9c5dd7c-7d55-4b9b-aa77-0f93dcbe9420.
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Lanehart, Rheta E. "Patterns of Consumption: Ceramic Residue Analysis at Liangchengzhen, Shandong, China." Scholar Commons, 2015. http://scholarcommons.usf.edu/etd/5858.
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The purpose of this thesis was to identify the different patterns of food consumption across space and time at Liangchengzhen, a Longshan (ca. 2600-1900 B.C.) site located in Shandong Province, China. The primary hypothesis of the research contended that evidence of increasing social inequality with respect to food consumption would be found from early to late phases at Liangchengzhen. In addition, rice and meat from mammals, especially pigs, were hypothesized as the most likely types of prestigious foods for daily and ritual activities. Fish and marine foods in general were hypothesized to be foods that average households could obtain since Liangchengzhen was close to the sea and would not have as high a value as mammal meat.
Pottery was sampled from Early Phase storage/trash and ritual pits as well as Late Phase storage/trash and ritual pits located in Excavation Area One. Pottery types included ding and guan, hypothesized for cooking meat, and yan, hypothesized for steaming vegetables and grains. Lipid residue analysis was performed using gas chromatography/mass spectrometry (GCMS) to quantify the amount of C15 and C17 alkane peaks in the pottery and compare these quantities to the amount of C15 and C17 alkane peaks in terrestrial and marine food reference sources.
Results indicated that socially valued food consumption transitioned from marine food sources in the early phase ritual pits to rice and pig in the late phase ritual pits. Millet and plant residues were consistently present in storage/trash pits from both early and late phases. Findings also indicated that the use of pottery types for cooking were not limited to one source, i.e., marine, rice, millet and plant residues were found in all pottery types while pig residues were found in ding and yan pottery.
Results of the lipid residue analysis provide partial support of increasing social inequality with respect to food consumption from early to late phases at Liangchengzhen, The findings from the lipid residue analysis in this thesis more closely resemble the distribution of integrative, communal consumption pattern in the early phase and a hierarchical consumption pattern during the late phase. Fish, more abundant in the early phase, was almost non-existent by the late phase. Pig and rice, hypothesized as preferred foods, were found only during the late phase, primarily in the ritual pit, H31. Millet and plant were conspicuously present during both phases, but had greater separation from ritual pits during the late phase. However, these findings are surprising since it does not match the material remains of rice and pig found in early phase pits or late phase storage/trash pits from Excavation Area One.
It can be concluded that patterns of consumption at Liangchengzhen changed substantially from the early phase to the late phase with regards to food residues found in hypothesized ritual pits. Considering these data with the understanding that food in China has historically been used as a tool to wield influence and power, it can be hypothesized that a social hierarchy may have developed by the late phase that was not present during the early phase. However, participation in the activities held in late phase ritual pits may have been inclusive for all Liangchangzhen residents rather than exclusive for higher status individuals.
The current research provides a starting point for further investigation into the foodways at Liangchengzhen. This thesis is the first systematic study of food residues from the interior of Neolithic vessels from ancient China that relates the results of the residue analysis to patterns of food consumption and social change.
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Barker, Andrew L. "Archaeological Proteomics: Method Development and Analysis of Protein-Ceramic Binding." Thesis, University of North Texas, 2010. https://digital.library.unt.edu/ark:/67531/metadc28392/.
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The analysis of protein residues recovered from archaeological artifacts provides a unique opportunity to reveal new information about past societies. However, many scientists are currently unwilling to accept protein-based results due to problems in method development and a basic lack of agreement regarding the ability of proteins to bind to, and preserve within, artifacts such as pottery. In this paper, I address these challenges by conducting a two-phase experiment. First, I quantitatively evaluate the tendency of proteins to sorb to ceramic matrices by using total organic carbon analysis and spectrophotometric assays to analyze samples of experimentally cooked ceramic. I then test a series of solvent and physical parameters in order to develop an optimized method for extracting and preparing protein residues for identification via mass spectrometry. Results demonstrate that protein strongly sorbs to ceramic and is not easily removed, despite repeated washing, unless an appropriate extraction strategy is used. This has implications for the future of paleodietary, conservation ecology and forensic research in that it suggests the potential for recovery of aged or even ancient proteins from ceramic matrices.
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Steelman, Karen Lynn. "Non-destructive radiocarbon and stable isotopic analyses of archaeological materials using plasma oxidation." Texas A&M University, 2004. http://hdl.handle.net/1969.1/2739.
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Plasma oxidation, an alternative to combustion, is shown to be a non-destructive method for obtaining radiocarbon dates on perishable organic artifacts. Electrically excited oxygen gently converts organic carbon to carbon dioxide. Radiocarbon measurements are then performed using accelerator mass spectrometry. Because only sub-milligram amounts of material are removed from an artifact over its exposed surface, no visible change in fragile materials has been observed, even under magnification. Materials in this study include: Third International Radiocarbon Intercomparison (TIRI) sample B (Belfast pine); Fourth International Radiocarbon Intercomparison (FIRI) optional samples; six different materials from a naturally mummified baby bundle from southwest Texas; and peyote from Shumla Caves, Texas, and Cuatro Ci??negas, Mexico.
Continuing previous research in the Rowe laboratory, a primary application of plasma oxidation has been its use to date rock art at archaeological sites around the world. This dissertation includes dates for: Toca do Serrote da Bastiana, Brazil; Ignatievskaya Cave, Russia; partially buried megalithic monuments, Spain; Arnold/Tainter Cave, Wisconsin; and Little Lost River Cave No. 1, Idaho.
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Bagdzevičienė, Jurga. "Investigation and Description of Ancient Pigments in Paintings and Archaeological Glass Finds." Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2012. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2012~D_20120629_152636-81665.
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In this dissertation, the results of detailed investigation of the seven unique art objects are presented. The presented results show that complex apllying of the instrumental analytical methods of OM, FTIR, SEM/EDX, XRD, μXRD and µRS is accurate and efficient way to identify composition of works of art and archaeological finds of glass, pigments or describe their technology. IR spectroscopy has been successfully applied to determine pigments and some pigment mixtures in painting‘s ground, paint layers, and destruction products in archaeological glass. The SEM/EDX analysis successfully can be used in determining the main elements of the paint samples at different cross-section points perform a qualitative analysis of the pigments (cinnabar, lead white, chalk, smalt et. al. ), in some cases, to discuss the features of the production of pigments. The SEM/EDX provided a possibility to examine three archaeological glass beads. According to the elemental composition, microstructure, and the specific features in different areas of the glass was defined nature of the destruction of glass. XRD and μXRD analysis successfully can be used in determining the crystalline phases in the paint and archaeological glass samples. Identify following pigments and their mixtures: calcite CaCO3, carbon, lead tin yellow type I Pb2SnO4, lead tin yellow type II PbSn03, hydrocerussite 2PbCO3 ∙ Pb (OH)2, cerussite PbCO3, Egyptian blue CaCuSi4O10, gypsum CaSO4 ∙ 2H2O, anhydrite CaSO4, huntite Mg3Ca(CO3)4... [to full text]Septynių unikalių, didelę istorinę ir meninę vertę turinčių objektų – trijų XVII ir XVIII a. paveikslų, Senovės Egipto sarkofago bei trijų archeologinių stiklo karolių iš Kernavės-Kriveikiškių kapinyno – tyrimams sėkmingai pritaikyti OM, FTIR, SEM/EDX, XRD, μXRD ir µRS analizės metodai. Konstatuota, kad taikant kompleksinius tyrimus galima tiksliai ir efektyviai identifikuoti kūrinių medžiagas, charakterizuoti jų sandarą, apibūdinti technologijas. IR spektroskopija sėkmingai panaudota identifikuojant tapybos grunto ir dažų sluoksnių neorganinius tapybos pigmentus ir jų mišinius bei stiklo korozijos produktus. Parodyta, kad IR spektroskopija gali būti sėkmingai panaudota identifikuojant istorines restauravimo medžiagas. SEM/EDX analizės metodu nustatyta tapybos elementinė sudėtis, identifikuoti cinoberio, švino baltojo, kreidos, smaltos, suriko ir kt. pigmentai. SEM/EDX analizės metodu ištirti trys archeologiniai stiklo karoliai. Pagal elementinės sudėties skirtumus ir specifinius mikrostruktūros bruožus nustatytas stiklo destrukcijos pobūdis. XRD ir μXRD analizės metodais sėkmingai identifikuoti šie pigmentai ir/ar jų mišiniai: kalcitas CaCO3, anglis, I tipo Pb–Sn geltonasis Pb2SnO4, II tipo Pb–Sn geltonasis PbSn03, hidrocerusitas 2PbCO3∙Pb(OH)2, cerusitas PbCO3, Egipto mėlynasis CaCuSi4O10, gipsas CaSO4∙2H2O, anhidritas CaSO4, huntitas Mg3Ca(CO3)4, dolomitas CaMg(CO3)2. Pirmą kartą μRS metodu identifikuotas II tipo švino alavo geltonasis pigmentas, archeologiniam stiklui... [toliau žr. visą tekstą]
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Muskara, Uftade. "Provenance Studies On Limestone Archaeological Artifacts Using Trace Element Analysis." Master's thesis, METU, 2007. http://etd.lib.metu.edu.tr/upload/12608429/index.pdf.
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Trace element composition of archaeological artifacts is commonly used for
provenance studies. Limestone has generally studied by geologists and there are
a few researches done by various archaeological sciences. Although it is a
common material for buildings and sculpture it is been thought that limestone
used had not imported like marbles.
Limestone figurines from Datça/Emecik excavations are classified as Cypriote type, which was very popular through 6th century B.C. in the Mediterranean region. Since this type of figurines was found at Emecik numerously to determine its provenance was an important problem. Emecik figurines were examined for their some major, trace elements and REE compositions and results were compared with geological samples which were taken from a near by quarry. Inductively Coupled Plasma-Optical Emission Spectrometry (ICP-OES), Inductively Coupled Plasma-Mass Spectrometry (ICPMS) have been used for analysis. The methods have been optimized by using standard reference material NIST 1d, NCS DC 73306, and IGS40.
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Jardine, Cady B. "Fremont finery : exchange and distribution of turquoise and olivella ornaments in the Parowan Valley and beyond /." Diss., CLICK HERE for online access, 2007. http://contentdm.lib.byu.edu/ETD/image/etd2049.pdf.
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Nasanen, Liisa Maria Elina. "Stabilisation of archaeological copper alloy artefacts using subcritical fluid technology." Thesis, Cardiff University, 2018. http://orca.cf.ac.uk/114466/.
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The research presented aimed to investigate potential of subcritical fluid technology to effect Cl- release and transform compounds of copper alloy artefacts of cultural significance. The work intended to determine the most effective pH, temperature, and time combination subcritical treatment variables to: 1. transform or solvate insoluble or sparingly soluble copper compounds containing Cl - CuCl and Cu2(OH)3Cl (atacamite and clinoatacamite); 2. examine impact on typical patina compounds Cu2O and Cu2CO3(OH)2 and to establish optimal conditions for their retention throughout treatment. Additionally, the research expected to offer guidance on the values of the operational parameters to use when applying subcritical treatment to archaeological copper alloy objects. The series of experiments yielded preliminary results on solvation, extraction, chemical transformation, and physical modification of the predominant corrosion products found on copper alloy artefacts. Experiments were completed using analogue pressed pellets of corrosion products, naturally corroded copper coupons and archaeological artefacts, with specific focus on corrosion profiles, metallography and microstructure. The results of extraction show significant amounts of Cl- are removed and thus the reactivity of objects is reduced. While this study conclusively demonstrated subcritical treatment is capable of both removal and transformation of Cl-bearing compounds commonly present in copper alloy objects, it cannot be recommended for treating archaeological objects based on these results alone. Aesthetic and physical changes are unpredictable and may be unacceptable. Accepting these changes cannot directly be balanced against the proven effectiveness of subcritical treatment for removing Cl, nor its rapid treatment time.
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Scott, Ashley. "Development of a Targeted Protein Residue Analysis Approach in Archaeology." Thesis, University of North Texas, 2017. https://digital.library.unt.edu/ark:/67531/metadc1011863/.
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Liquid chromatography-mass spectrometry (LC-MS) based proteomic methods have provided archaeologists with a powerful tool for the discovery and identification of proteins within artifacts. Traditionally, discovery-based methods have utilized a non-targeted full mass scan method in an attempt to identify all proteins present within a given sample. However, increased sensitivity is often needed to target specific proteins in order to test hypotheses. Proteins present within archaeological materials present a unique challenge, as they are often subjected to a variety of chemical transformations both before and after burial. Any preserved proteins will be present within a complex mixture of compounds, and full mass scans often fail to detect less abundant proteins of interest. Consistent and reliable targeted methods are needed to detect protein biomarkers. Taphonomic experimentation was employed as a means to identify the effect of particular processes and conditions on the preservation of mare's milk proteins. In addition, three LC-MS methods were evaluated for their efficiency in identifying mare's milk-specific peptide biomarkers from experimental pottery samples. The ability to reliably detect the presence of these species-specific peptides can help provide evidence about past cultural groups, including the origins of dairying and animal domestication.
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Snoeck, Christophe. "A burning question : structural and isotopic analysis of cremated bone in archaeological contexts." Thesis, University of Oxford, 2014. http://ora.ox.ac.uk/objects/uuid:0e08ba32-1f9a-4b3c-afc4-86b99acefb69.
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Cremated bone occurs in many archaeological sites as small grey and white fragments. The high temperatures reached during heating induce structural, chemical and isotopic changes to bone apatite (the inorganic fraction of bone). These changes are investigated here by infrared spectroscopy and mass spectrometry (d13C, d18O and 87Sr/86Sr) in both modern heated bone and archaeological cremated specimens. The results of various heating experiments (in laboratory and natural conditions) highlight the significant carbon and oxygen exchanges with the fuel used as well as with bone organic matter (mainly collagen). While not informing on dietary practice and hydrology as is the case with unburned bone, the d13C and d18O values of calcined samples together with infrared results provide information on the conditions in which the bone was heated (e.g. presence of fuel, size of the pyre, temperatures reached, dry or fresh bone, etc.). In parallel, the effect of heat on the strontium present in bone is minimal, if not undetectable. Furthermore, as observed through artificial contamination experiments, post-burial alterations also appear to be extremely limited, which is to be expected due to the higher crystallinity of calcined bone apatite compared to tooth enamel and unburned bone. These experiments demonstrate that calcined bone provides a reliable substrate for mobility studies using its strontium isotope composition. The application of these results to the study of six Neolithic and one Bronze Age sites from Ireland showed the possibility of discriminating cremated individuals that ate food originating from different regions, as well as highlighting possible variations in cremation practices between different sites. The results of this thesis greatly extend the application of strontium isotopes to places and periods in which cremation was the dominant mortuary practice, or where unburned bone and enamel do not survive. They also provide insights into the reconstruction of ancient cremation practices.
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Docherty, Gordon. "Natural variations in plant tissue individual fatty acid and monosaccharide #delta#¹³C values : implications for defining the origins of animal fats in archaeological pottery." Thesis, University of Bristol, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.247179.
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Phillips, Paige Gale. "Examining Activity Organization in Plazas through Geochemical Analysis at Tlalancaleca, Puebla, Mexico (800 BC-AD 100)." Scholar Commons, 2014. https://scholarcommons.usf.edu/etd/5434.
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This research aims to understand the organization of activities across a prehispanic urban center at the Formative period site of Tlalancaleca (800 BC- AD 100), located in Puebla, Mexico. This study analyzes soil samples at the central civic-ceremonial complex of Cerro Grande in an attempt to understand the use of space. This work is a part of the larger Proyecto Arqueológico Tlalancaleca, Puebla (PATP), which is focused on understanding the socio-political organization at Tlalancaleca that led to this site of early urbanism. Soil samples from Tlalancaleca are analyzed using three chemical methods to perform a cross-comparison of analytical methods. These three methods are inductively coupled plasma-optical emission spectrometry (ICP-OES), Mehlich 3 soil phosphorus colorimetry, and portable X-ray fluorescence (pXRF) spectrometry. The final results of this soil analysis confirm that the Cerro Grande Complex was an actively used space, with areas maintained for specific uses and areas where activities changed over time. In the comparison of methods, ICP-OES was found to be the most comprehensive, precise, and accurate method to use, while pXRF and Mehlich colorimetry were found to show differing information with regards to available and natural concentrations of the different elements. An analytical examination of phosphorus, strontium, calcium, and barium revealed evidence of construction of monumental buildings, a cache, and possible separate feasting areas, indicating that physical spaces and constructions were likely attached to social and political organizations.
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Poon, Kelvin Weng Chun. "In situ chemical analysis of tattooing inks and pigments : modern organic and traditional pigments in ancient mummified remains." University of Western Australia. Centre for Forensic Science, 2008. http://theses.library.uwa.edu.au/adt-WU2008.0257.
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At various points in human history, tattooing has been ubiquitous on almost every continent on Earth, used for reasons of aestheticism, religious beliefs or for social purposes. To study the art of tattooing with respect to a particular culture, one must always be critical to any references to the practice (written, pictorial or artefactual) due to issues of translation and misinterpretation. Complete verification may only come with the discovery of actual tattooed human remains. In combination with artefactual and anthropological evidence, these remains not only provide physical proof of the practice in a culture's ancestry but also possess the ability to link various other forms of physical evidence, which on their own would remain speculative. By its very nature, tattooing may only exist while the bearer is alive. Once the owner dies, the skin, along with the tattoo, decomposes (under normal decomposition conditions) and is lost forever. However, tattoos may survive if the dermal layers of the skin are preserved, either by natural or artificial means. The processes of mummification in various civilisations have provided us with a rare opportunity to study the art and processes of tattooing in antiquity. Existing tattooed mummified remains have been found in: Egypt; Siberia; Eastern Central Asia; Greenland; Alaska and St. Lawrence Islands; Central Andes (Peru and Chile); Philippines; New Zealand and Italy. Existing literature regarding the analysis of tattooing inks and pigments once deposited into the skin is very limited. Comparatively, the industrial organic pigments used to colour the majority of modern tattooing inks sold today have not been officially approved by any regulating body and as such, manufacturers are not required to disclose the chemical ingredients of their products. Chemical identification of these tattoo pigments post-procedure will aid medical practitioners in the event of complications or for the purposes of tattoo removal. Forensically, tattoos are often one of the distinguishing features used in the identification of victims of crime or accidents. Experiments were carried out using an animal model (Sus scrofa) for the tattooing. Given the theoretically large but ultimately limited range of substances available to both ancient and modern tattooists, the premise of the experiment involved surveying the literature regarding possible tattooing pigments and either obtaining or reproducing a careful selection of these in the laboratory. These pigments were then tattooed onto the ii animal model and after allowing for the essential healing period, the tattooed areas were excised, with those tattooed with traditional pigments subjected to various simulated mummification environments.
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Fors, Yvonne. "Sulfur-Related Conservation Concerns in Marine Archaeological Wood : The Origin, Speciation and Distribution of Accumulated Sulfur with Some Remedies for the Vasa." Doctoral thesis, Stockholm : Department of Physical, Inorganic and Structural Chemistry, Stockholm University, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-7627.
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Verney-Carron, Aurélie. "Étude d'analogues archéologiques pour la validation des modèles de comportement à long terme des verres nucléaires." Thesis, Vandoeuvre-les-Nancy, INPL, 2008. http://www.theses.fr/2008INPL052N/document.
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Des blocs de verre archéologique provenant d’une épave découverte près de l’île des Embiez (Var) en mer Méditerranée ont été étudiés en raison de leur analogie morphologique avec les verres nucléaires et de leur environnement connu et stable. Fracturés à l’issue de leur élaboration (comme les verres nucléaires), ces verres se sont altérés près de 1800 ans en eau de mer. Ce travail a abouti au développement et à la validation d’un modèle géochimique capable de simuler l’altération d’un bloc de verre archéologique fracturé au bout de 1800 ans. Les expériences ont permis de déterminer les constantes cinétiques des mécanismes en jeu (interdiffusion et dissolution du réseau vitreux) et les paramètres thermodynamiques (affinité, phases secondaires) de ce modèle. Celui-ci, implémenté dans HYTEC a permis de simuler l’altération de fissures sur 1800 ans. La cohérence des épaisseurs d’altération simulées et des valeurs mesurées sur les blocs valide la capacité prédictive du modèle. Ce modèle permet alors d’expliquer les résultats issus de la caractérisation du réseau de fissures et de son état d’altération. Les fissures de la zone externe du bloc sont les plus altérées du fait du renouvellement rapide de la solution, alors que les fissures internes ont des épaisseurs très fines à cause du couplage entre l’altération du verre et le transport des éléments en solution (effet de l’ouverture initiale et du colmatage). Les résultats expliquent non seulement les épaisseurs les plus fines, mais aussi leur variabilité. Le comportement analogue des verres archéologiques et nucléaires permet d’envisager une transposition de ce modèle aux verres nucléaires en condition de stockage géologiqueFractured archaeological glass blocks collected from a shipwreck discovered in the Mediterranean Sea near Embiez Island (Var) were investigated because of their morphological analogy with vitrified nuclear waste and of a known and stable environment. These glasses are fractured due to a fast cooling after they were melted (like nuclear glass) and have been altered for 1800 years in seawater. This work results in the development and the validation of a geochemical model able to simulate the alteration of a fractured archaeological glass block over 1800 years. The kinetics associated with the different mechanisms (interdiffusion and dissolution) and the thermodynamic parameters of the model were determined by leaching experiments. The model implemented in HYTEC software was used to simulate crack alteration over 1800 years. The consistency between simulated alteration thicknesses and measured data on glass blocks validate the capacity of the model to predict long-term alteration. This model is able to account for the results from the characterization of crack network and its state of alteration. The cracks in the border zone are the most altered due to a fast renewal of the leaching solution, whereas internal cracks are thin because of complex interactions between glass alteration and transport of elements in solution (influence of initial crack aperture and of the crack sealing). The lowest alteration thicknesses, as well as their variability, can be explained. The analog behavior of archaeological and nuclear glasses from leaching experiments makes possible the transposition of the model to nuclear glass in geological repository
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Baldia, Christel M. "Development of a protocol to detect and classify colorants in archaeological textiles and its application to selected prehistoric textiles from Seip Mound in Ohio." Connect to resource, 2005. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1122567876.
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Lopa, Afrin Jahan. "Application of in situ shallow subsurface soil spectroscopy (S4) to archaeology and forensics." University of Akron / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=akron1619718858276667.
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Giblin, Julia Irene. "Isotope Analysis on the Great Hungarian Plain: An Exploration of Mobility and Subsistence Strategies from the Neolithic to the Copper Age." The Ohio State University, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=osu1306863726.
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Arles, Adrien. "Entre monnayage officiel et faux-monnayage : la fabrication de la monnaie au marteau en France (XIIIe - XVIIe siècles) : approche physico-chimique, expérimentale et historique." Phd thesis, Université d'Orléans, 2009. http://tel.archives-ouvertes.fr/tel-00418642.
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Suite aux fouilles du second atelier monétaire royal de La Rochelle (17), une grande quantité de matériel a pu être mis au jour. Cette découverte est exceptionnelle par deux aspects puisqu'il s'agit à ce jour de l'unique atelier officiel fouillé en France et que les structures et objets découverts permettent en une première lecture, d'ébaucher une chaîne de production de la monnaie. Ce matériel précurseur complété de céramiques provenant de l'atelier médiéval de Montreuil-Bonnin (86) constitue la base de cette étude archéométrique inédite des techniques monétaires officielles. Cette recherche, par définition multidisciplinaire, s'appuie sur la caractérisation physico-chimique de corpus archéologiques mais également sur une étude des sources historiques : traités monétaires, procès-verbaux, comptes d'atelier... Enfin, les reconstitutions paléométallurgiques participent pour une part importante aux discussions engagées. Elles renseignent sur la complexité des opérations tout en produisant des analogues librement étudiables, comparés aux échantillons anciens. La compilation de toutes les données collectées permet non seulement de proposer une description des techniques du monnayage au marteau telles qu'elles étaient mises en oeuvre dans les fabriques monétaires jusqu'au milieu du XVIIe siècle et de révéler les matières premières utilisées mais également de comprendre le fondement des opérations pratiquées. En tant que fabrication monétaire particulière, les techniques propres au faux-monnayage ont parallèlement été considérées par le biais de l'étude de deux exemples localisés au début de la Période Moderne dans le département de l'Aude (11). En suivant la même démarche expérimentale, il a été possible de mettre en évidence les particularismes de ces activités et de révéler plusieurs analogies avec les techniques officielles.
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Wilson, Andrew S. "Hair as a Bioresource in Archaeological Chemistry." 2005. http://hdl.handle.net/10454/3407.
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NoThis authoritative book combines contributions from experts in academic, governmental and industrial environments, to provide a unique, comprehensive look at: - Why hair can serve as an invaluable bio-resource in toxicology, with up-to-date reviews on hair growth, hair fibre formation and hair pigmentation - Information (including regulatory details) on the exposure of hair (and by extension the body) to drug and non-drug chemicals and pollutants - Toxicological issues relevant to the use of hair products (including colourants, shampoos and depilatories) - The ability of hair to capture information on personal identity, chemical exposure, and environmental interactions - How hair can provide an understanding of human life from archaeological and historical perspectives - Future direction in the use of hair in toxicology Hair in Toxicology: An Important Biomonitor is ideal as a reference and guide to investigations in the biomedical, biochemical and pharmaceutical sciences at the graduate and post graduate level.
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Shanks, Orin C. "DNA recovery and identification from stone tool microcracks." Thesis, 2003. http://hdl.handle.net/1957/32480.
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The studies described here introduce a model for residue preservation on stone
tools. They simulate stone tool manufacture in order to define parameters important
for the study of DNA residues. Microscopic examination of stone tools has identified
microcracks that trap DNA and protein from animal blood cells. Thorough
investigation of different methods to recover residues from stone tools shows that
surface washing leaves DNA and protein, trapped in subsurface microcracks.
However, other extraction techniques are able to release 60-80% of DNA and protein
residues.
Previous research documents the identification of protein from stone tools
sonicated in 5% ammonium hydroxide, but it remains untested whether the same
treatment yields useable DNA. Using this treatment, I identified 13-year-old DNA
residues from experimentally manufactured stone tools. In addition, results clearly
indicate that washing procedures typically used to curate stone tools removed only a
small fraction of the DNA deposited during animal butchery.
Twenty-four pieces of chipped stone recovered from the Bugas-Holding site
were studied to explore the validity of ancient DNA residue identifications. Nine tools
yielded DNA residues. Modern humans did not touch three of these tools, which
suggests that the DNA recovered from them was present prior to excavation. One
tool, which was handled by excavators without gloves, harbored DNA from three
species, and these templates competed during PCR. On at least two tools, handling
after excavation introduced animal DNA unrelated to tool use. Careful testing of
Bugas-Holding chipped stone suggests that stone tools may harbor both ancient and
modern DNA, and that investigators must take great care to exclude modern DNA
from ancient specimens.
Ultimately, I developed and streamlined a method to analyze DNA-containing
residues preserved on stone tools. This led to several technical improvements in
ancient DNA residue analysis. These include a more effective DNA recovery
protocol, methods to measure sensitivity and inhibition of PCR in each sample, and
strategies to surmount competition between templates during amplification, which can
occur in samples that contain DNA from multiple species. These new developments
will help future investigators achieve the full potential of ancient DNA residue
analysis.Graduation date: 2003
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Sheridan, Susan G. "Minor and trace element distributions in bone reconstruction of diagenetic, dietary, and disease patterns in an ancient Nubian population /." 1992. http://catalog.hathitrust.org/api/volumes/oclc/28491757.html.
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"Traveling Monastic Paths: Mobility and Religion in Medieval Ireland at Five Early and Late Medieval Irish Monasteries." Doctoral diss., 2018. http://hdl.handle.net/2286/R.I.49271.
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abstract: Mobility is an important aspect of the lives of religious individuals described by medieval texts in early and late medieval Ireland, and biogeochemical methods can be used to detect mobility in archaeological populations. Stories are recorded of monks and nuns traveling and founding monasteries across Ireland, Scotland, England, Wales, and other areas of Europe. However, these texts rarely address the quotidian lives of average monks and nuns who lived in monastic communities. This dissertation seeks to understand if travel was a typical part of the experiences of religious and lay people in early and late medieval Ireland. It also aims to increase understanding of how monastic communities related to the local lay communities, including addressing if the monastery was populated by those who grew up in the local area. Another methodological aim of this dissertation is to advance the field of archaeological biogeochemistry by (1) adding to the bioavailable strontium baseline in Ireland and (2) quantifying the contribution of ocean-derived strontium to coastal environments. These topics are explored through the biogeochemical analysis of 88 individuals buried at 5 early and late medieval monasteries in Ireland and the analysis of a total of 85 plant samples from four counties in Ireland. The three papers in this dissertation present: (1) a summary of the mobility of religious and lay people buried at the monasteries (Chapter 2), (2) a case study presenting evidence for fosterage of a local child at the early medieval monastery of Illaunloughan, Co. Kerry (Chapter 3), and (3) a study designed to quantify the impact of sea spray on bioavailable strontium in coastal environments (Chapter 4). The majority of lay and religious individuals studied were estimated to be local, indicating that medieval Irish Christianity was strongly rooted in the local community. The study of ocean-derived strontium in a coastal environment indicates that sea spray has a non-uniform impact on bioavailable strontium in coastal regions. These findings shed new light on medieval monastic and lay life in Ireland through the application of biogeochemical methods, contributing to the growth of the field of archaeological chemistry in Ireland.Dissertation/Thesis
Doctoral Dissertation Anthropology 2018
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Turner-Pearson, Katherine. "The search for ancient hair: a scientific approach to the probabilities and recovery of unattached hair in archaeological sites." Thesis, 2007. http://hdl.handle.net/1969.1/ETD-TAMU-1417.
Full textAbstract:
A recent upsurge exists of archaeologists using ancient hair as a research tool, with new uses of this previously discarded archaeological material being introduced annually. Human hair deteriorates extremely slowly, and since the average modern human sheds approximately one hundred hairs per day, there should be copious amounts of hair debris left behind after humans leave a site; it is just a matter of how much of the hair survives in the archaeological environment. Most loose hair recovered from archaeological sites, however, is found fortuitously and in many cases, because archaeologists were not actively searching for ancient hair, it is possible they tainted the hair they later tested in ways that compromised their data, or more importantly contaminated their samples with modern hair and did not test ancient hair at all. No standardized method has previously been established for searching for ancient hair in an archaeological site. This paper considers (a) a method of soil extraction in the field that avoids contamination with modern hair and elements that might hinder later test data; (b) the processing of samples in the laboratory while continuing sample integrity; (c) identification of the types of soils and environments that are most favorable to hair preservation; and (d) an examination of the relevance of hair extraction from sites including the practicality and research potential. This paper examines five archaeological sites, using three different methods of hair extraction, examining the pros and cons of each. This should enable future researchers to find a method that works best for their particular site. It also analyzes the soil chemistry of the sites in order to study the soil and hair survival relationship, so that scientists can better determine which soils hold the best potential for hair survival. Laboratory methods that avoid contamination of the samples are also outlined in order to help researchers keep sample integrity after leaving the archaeological site.
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Moffat, Ian Alexander. "Spatially resolved strontium isotope micro-analysis of lower and middle palaeolithic fauna from archaeological sites in Israel and Southern France." Phd thesis, 2013. http://hdl.handle.net/1885/150693.
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The use of strontium isotope analysis to provenance biominerals such as bone and teeth has become a regularly applied component of archaeological research. This method works by comparing the isotopic composition of these materials with regional bioavailable soil values, allowing an estimation of the distance and vector of an individual's mobility. New advances in analytical equipment has facilitated the spatially resolved micro-analysis of strontium isotope composition using laser ablation sampling, allowing intra-sample heterogeneity to be quantified. This provides the opportunity to determine not only the overall provenance of a material, but also the degree of mobility during biomineral formation. This research applies laser ablation multi-collector inductively coupled plasma mass spectroscopy (LA-MC-ICPMS) to 90 teeth of Lower and Middle Palaeolithic faunal prey from Lower and Middle Palaeolithic archaeological sites within Israel and France. These sites span a crucial period in human evolution, characterised by the radiation of multiple hominin species and by dynamic oscillations of climate with attendant changes in fauna and flora. The strontium isotope values from LA-MC-ICPMS analysis in this thesis show a high level of intra-sample variability, which would not have been captured by a traditional analytical methodology. This suggests that, despite some problems in obtaining accurate results due to offsets between solution and laser values, strontium isotope studies that do not utilise spatially resolved micro-analysis are unable to accurately determine mobility. The results of this research demonstrate that fauna from the archaeological sites of interest-including Amud, Qafzeh, Tabun, Skhull, Holon, Bois Roche, Le Moustier, La Chapelle-aux-Saints, Les Fieux, Pech de l'Aze II and Rescoundudou-appear to have patterns of mobility that are controlled by variables such as species, marine isotope stages (MIS) and regional physiography. Specifically, Persian fallow deer, bison, mountain goat/chamois and fox are frequently mobile between different geological environments during amelogenesis while wild boar and rhinoceros are sessile. The calculated range of distance for minimum possible mobility for each sample is large, ranging from 0 km to 350 km. The median values for minimum possible mobility for each species suggest that wild boar, bison and fox are mobile over the greatest distance while Bos, rhinoceros, Persian fallow deer and unidentified deer are mobile over the least. Furthermore, fauna in MIS 4 and 3 are significantly more mobile than in MIS 6 and 5. Fauna from France are more mobile than those from Israel, which is attributed to the location of the archaeological sites adjacent to significant river systems that could serve as conduits of mobility, even during inhospitable climate periods. Overall, these insights show that strontium isotope analysis can be usefully applied to quantifying mobility on a broad temporal and geographic scale, rather than simply being used, as is typical, for locating the source of material within a specific archaeological site.
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Biemond, Wim Moritz. "The Iron Age sequence around a Limpopo River floodplain on Basinghall Farm, Tuli Block, Botswana, during the second millennium AD." Diss., 2014. http://hdl.handle.net/10500/14390.
Full textAbstract:
The study encompasses the reconstruction of the Iron Age sequence around the Limpopo River floodplain on Basinghall Farm during the second millennium AD. A survey uncovered 75 Iron Age sites, including three Moritsane and ten Toutswe facies sites for the Middle Iron Age and two Early Moloko, 16 Middle Moloko (Letsibogo facies) and 43 Late Moloko grain bin platform sites for the Late Iron Age. The local settlement sequence, which is based primarily on a ceramic analysis of surficial and excavated collections, is corroborated by radiocarbon dates, a glass bead sequence and comparative data from previous studies. The borders of the Toutswe chiefdom are shown to have extended 100 km to the south, while the Eiland sequence is refined to include an Eiland, a Moritsane and a redefined Broadhurst facies. New light is also shed on the local Moloko sequence and its correlation with historical Tswana groups in south-eastern Botswana.Anthropology & Archaeology
M.A. (Archaeology)