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Academic literature on the topic 'Obsidiaan'

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Published: 26 July 2024

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Journal articles on the topic "Obsidiaan"

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MacDonald, Douglas H., Elizabeth A. Horton, and Todd A. Surovell. "COUGAR CREEK: QUANTITATIVE ASSESSMENT OF OBSIDIAN USE IN THE GREATER YELLOWSTONE ECOSYSTEM." American Antiquity 84, no. 1 (January 2019): 158–78. http://dx.doi.org/10.1017/aaq.2018.76.

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With more than 15 sources of obsidian and other lithic materials, the Greater Yellowstone Ecosystem of Montana, Wyoming, and Idaho is one of the richest toolstone regions in northwestern North America. This article introduces a quantitative assessment technique to compare attributes of seven Yellowstone obsidians used by Native Americans over at least 11,000 years. The proposed assessment technique is replicable and adaptable to other regions. This article also analyzes the procurement, use, and distribution of the poorly studied Cougar Creek obsidian. Archaeological research documented Cougar Creek obsidian outcrops, procurement areas, and secondary processing sites. Native Americans acquired the material at surface exposures, as well as occasional trench and pit excavations. There is a significant distance decay reduction in its use, especially when compared with Obsidian Cliff obsidian. Using a weighted z-score analysis, the material attributes of Cougar Creek were compared with those of six regional obsidians to determine the factors involved in their differential use. Based on these rankings, Cougar Creek obsidian experienced low demand and usage due to poor quality and availability. In contrast, due to their high quality, abundance, and aesthetics, Obsidian Cliff and Bear Gulch obsidians were preferred for stone tool production.
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Martin, Franco Foresta, Silvio G. Rotolo, Manuela Nazzari, and Maria Luisa Carapezza. "Chlorine as a Discriminant Element to Establish the Provenance of Central Mediterranean Obsidians." Open Archaeology 6, no. 1 (January 1, 2020): 454–76. http://dx.doi.org/10.1515/opar-2020-0124.

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Abstract Chlorine is a minor element present in obsidians in quantities greater than in average igneous rocks. The chlorine concentration in obsidians is generally low, of the order of tenths of wt %, but it exhibits an appreciable differentiation among geological sources. Despite these characteristics, chlorine has rarely been taken into consideration as a possible indicator of obsidian provenance and it does not appear in the chemical analytical tables accompanying the geochemical characterisation of obsidian samples. In this work, after an overview of chlorine geochemistry and cycle, we present thirty-one new electron microprobe (EPMA) analyses, including Cl, of geologic obsidians sampled from the four sources of the Central Mediterranean, exploited in prehistoric times (Monte Arci, Palmarola, Lipari and Pantelleria). The results are compared with 175 new EPMA analyses, including Cl, of archaeological obsidians already characterised in previous work and of known provenance. As such it was possible to ascertain that each source has a characteristic chlorine concentration, showing the utility of its use in the studies of obsidian provenance. Furthermore, given that the solubility of chlorine in silicate melts is correlated to its alkali content, in particular sodium, we assessed the efficacy of simple binary graphs Cl vs Na2O to better constrain the provenance of the obsidian samples.
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Fernández, María Victoria, Pablo Rodrigo Leal, Claudia Della Negra, Catherine Klesner, Brandi Lee MacDonald, Michael Glascock, and Ramiro Barberena. "Obsidiana Varvarco: una nueva fuente en el noroeste de Patagonia (Neuquén, Argentina)." Revista del Museo de Antropología 12, no. 1 (April 30, 2019): 35. http://dx.doi.org/10.31048/1852.4826.v12.n1.21865.

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<p>En el norte neuquino existen depósitos piroclásticos que contienen nódulos de obsidianas. Las investigaciones en la región dieron a conocer las principales fuentes utilizadas por las poblaciones que allí habitaron. Para profundizar el conocimiento de cada fuente de obsidiana se adoptó un programa de estudio geoarqueológico y geoquímico. Así, se han descubierto nuevas ocurrencias de obsidianas, la más destacable de las cuales es la obsidiana Varvarco que aquí se presenta. Se dan a conocer los muestreos realizados en el valle del río Varvarco, su contexto geológico y geomorfológico, la presencia de obsidiana, el tipo de yacimiento, forma de presentación, distribución y abundancia. Luego, se describen las principales características observadas bajo microscopio petrográfico. Por último, se presentan los resultados de análisis geoquímicos de fluorescencia de rayos X y activación neutrónica. A partir de los primeros la obsidiana Varvarco se diferencia de la de Cerro Huenul, pero no de la obsidiana Maule 1 y 2. Los segundos análisis discriminan bien esta nueva obsidiana de las ya conocidas para Neuquén. Los resultados obtenidos permiten reinterpretar la disponibilidad de recursos líticos de buena calidad para la talla y revisar las interpretaciones de movilidad e interacción de poblaciones en esta región.</p>
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Jwa, Yong-Joo, Seonbok Yi, Mi-Eun Jin, and Ga-Hyun Hwang. "Two Contrasting Provenances of Prehistoric Obsidian Artifacts in South Korea: Mineralogical and Geochemical Characteristics." Open Archaeology 5, no. 1 (April 20, 2019): 106–20. http://dx.doi.org/10.1515/opar-2019-0008.

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AbstractTwo provenances – Mount Baekdusan near Sino-Korean border and Kyushu of southwest Japan – are well known for Korean prehistoric obsidian artifacts. We examined the mineralogical and geochemical characteristics of the Baekdusan obsidians and the Kyushu obsidians. Though obsidians are of glassy material, microlites are easily found in the host matrix. Fe-oxides are the most abundant microlite phase, with a lesser amount of clinopyroxene, feldspar, and biotite. It is notable that the texture and chemical composition of the microlites in the Baekdusan obsidians are quite different from those in the Kyushu obsidians. Clinopyroxene in the Baekdusan obsidians occurs as oikocryst enclosing smaller Fe-oxides, and has the composition of hedenbergite to augite. On the other hand, clinopyroxene in the Kyushu obsidians is compositionally of clinoferrosilite, and shows intergrowth and/or overgrowth textures with Fe-oxides. Feldspar microlites in the Baekdusan obsidians are generally of sanidine to anorthoclase, whereas those in the Kyushu obsidians of oligoclase. Biotite microlites are often found in the Kyushu obsidians, but absent in the Baekdusan obsidians. Also, there exist prominent geochemical contrasts between the Baekdusan obsidians and the Kyushu obsidians. At the similar SiO2 range of 74 to 78 wt.% the host glasses of the Baekdusan obsidians have higher contents of TiO2, total FeO, K2O, Nb, Hf, Zr, Ta, Y and rare earth elements (REEs) than those of the Kyushu obsidians. The overall mineralogical and geochemical contrasts for the Baekdusan and Kyushu obsidians seem to reflect different parental magma composition and crystallization environment. This distinction can be used to establish the provenance of the obsidian artifacts from the prehistoric sites in the Korean Peninsula as well as contiguous areas such as China, Japan, and Russia.
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Salgán, Laura, and María Paz Pompei. "Fuente de obsidiana El Peceño: primeros resultados de su abordaje tecnológico, geoquímico y espacial." Revista del Museo de Antropología 10 (July 26, 2017): 51. http://dx.doi.org/10.31048/1852.4826.v10.n0.13733.

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<p>La fuente primaria de obsidiana El Peceño se encuentra ubicada en la planicie oriental del sur de Mendoza y su uso ha sido vinculado a contextos arqueológicos del Holoceno Tardío. Su ubicación geográfica, accesibilidad y calidad para la talla le otorgan características ventajosas en relación con otras fuentes de obsidiana conocidas. Sin embargo, su dispersión geográfica es menor que la registrada en las fuentes de obsidiana de cordillera. Estudios geoquímicos previos hicieron posible discriminar dos sub-fuentes denominadas El Peceño-1 y El Peceño-2. Recientes muestreos de campo permitieron ubicar espacialmente los afloramientos de ambas sub-fuentes y los talleres de procesamiento y extracción. En este trabajo se presenta la caracterización espacial y geoquímica de las sub-fuentes taller, sus particularidades macroscópicas y las primeras tendencias de su abordaje tecnológico. Los resultados muestran diferencias en la distribución espacial de las sub-fuentes y en las actividades de producción representadas en las variedades de El Peceño. La obtención de lascas y la confección de preformas serían actividades representadas en El Peceño-1, mientras que el descortezamiento y formatización de núcleos son frecuentes en El Peceño-2. Por último, se proponen expectativas del modo de transporte de estas variedades de obsidiana y las perspectivas de trabajo futuro.</p><p><br /><strong>Abstract</strong></p><p><br />The primary source of obsidian El Peceño is located in the eastern plains of southern Mendoza and its use has been linked to archaeological contexts of late Holocene. Its geographical location, accessibility, and quality, provide advantageous characteristics of procurement when compared to other known sources of obsidian. However, the geographic dispersion of this source is narrower compared with other Andean obsidian sources. Previous geochemical studies permitted discriminating between two sub-sources called El Peceño-1 and El Peceño-2. Recent field sampling allowed locating outcrops of both sub-sources and of processing and extraction locations. In this paper, spatial and geochemical characterization of the sub-sources, their macroscopic particularities, and first trends of their technological analysis are presented. The results show differences in distribution spatial of the sub-sources and production activities corresponding to different varieties of El Peceño obsidian. Flake and preform production were probably the activities conducted at El Peceño-1, while cortex removal and core formalizing, were the main activities conducted at El Peceño-2. Finally, expectations for the most frequent mode of transportation of these varieties of obsidian and the perspectives for future work are presented.</p>
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Church, Tim, and Carlos Caraveo. "The Magnetic Susceptibility of Southwestern Obsidian: An Exploratory Study." North American Archaeologist 17, no. 4 (April 1997): 271–85. http://dx.doi.org/10.2190/qg75-mvkt-he33-5vaq.

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The magnetic properties of volcanic glass and obsidian have long been known. Selected magnetic properties have proven useful discriminators among eastern Mediterranean obsidian sources. A recent exploratory study of the magnetic susceptibility of Southwestern obsidians indicates that it may prove a useful tool in this region also. Magnetic measurements of samples from many of the major obsidian sources in the Southwest were analyzed in an exploratory study of the technique and the resulting data are presented here. The technique and its limitations are also discussed.
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Poupeau, G., and Rosa B. Scorzelli. "Mõssbauer spectroscopy and dating by fission traces in provenience studies of archaeomaterials: obsidian artefacts." Revista do Museu de Arqueologia e Etnologia. Suplemento, supl.2 (December 10, 1997): 191. http://dx.doi.org/10.11606/issn.2594-5939.revmaesupl.1997.113451.

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A obsidiana foi urna das matérias primas mais utilizadas na industria lírica pré-histórica; é encontrada em numerosos sitios arqueológicos de regiões vulcânicas, e também, em lugares às vezes distantes de sua origem. A busca de fontes naturais de onde provêm as obsidianas, encontradas em sitios arqueológicos, permite uma melhor compreensão dos sistemas de troca e/ou proveniência destes objetos. Por suas características físico-químicas e de afloramento, a obsidiana é urna das rochas preferidas para este tipo de estudo. Neste artigo, descrevemos brevemente dois métodos físicos atualmente utilizados em estudos de proveniência de obsidianas arqueológicas, a espectroscopia Mõssbauer e a datação por traços de fissão, onde são dados alguns exemplos de aplicação e comentadas as perspectivas oferecidas por esses métodos
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Moholy-Nagy, Hattula, and Fred W. Nelson. "New Data on Sources of Obsidian Artifacts from Tikal, Guatemala." Ancient Mesoamerica 1, no. 1 (1990): 71–80. http://dx.doi.org/10.1017/s0956536100000080.

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AbstractIn 1984, 29 obsidian artifacts and an unworked nodule from Tikal were attributed to source by visual means and then analyzed by X-ray fluorescence (XRF). We conclude that the considerable within-source optical variability of gray Mesoamerican obsidians makes visual sourcing unreliable at present, although a corpus of descriptions of the optical characteristics of obsidian may eventually provide a way to exclude possible sources. The XRF analysis identified two additional central Mexican sources, bringing to six the number of Mexican obsidian sources represented at Tikal; failed to provide a secure identification for the nodule; supported the succession of Guatemalan obsidian sources utilized by the Southern Lowland Maya previously proposed by Nelson; and suggested other correlations between source, artifact type, and archaeological context.
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Negash, Agazi. "Obsidian in Ethiopia: a Geoarchaeological perspective." SINET: Ethiopian Journal of Science 45, no. 3 (December 30, 2022): 369–78. http://dx.doi.org/10.4314/sinet.v45i3.11.

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In Ethiopia, obsidian is mainly found in the Afar Depression and the Main Ethiopian Rift. The compositional and petrological features of these obsidians vary. Some volcanic centers show that varying volcanic eruptions from a single center may not necessarily imply variable chemistry. Obsidian has been dated using K/Ar, Ar/Ar, and fission track methods to determine the time of eruption but there are also a few dates on artifacts by hydration dating to establish the time of tool manufacture. Many of the geological sources were utilized by prehistoric populations beginning at least since the Early Stone Age but obsidian became commonly used during the Middle Stone Age. Obsidian based stone tool use for scraping in Ethiopia persisted until recent times.
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Castro Esnal, Analía, Cecilia Pérez de Micou, and Charles R. Stern. "Circulación de obsidiana en Chubut, Patagonia Central, Argentina: uso de las materias primas extra-regionales como indicadores de movilidad e interacción entre grupos cazadores recolectores." Revista do Museu de Arqueologia e Etnologia, no. 21 (December 9, 2011): 93. http://dx.doi.org/10.11606/issn.2448-1750.revmae.2011.89963.

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Os conjuntos de artefatos líticos recuperados em distintos tipos de sítios arqueológicos do Chubut mostram uma proeminência de matériasprimas locais, especialmente sílex, xilopalas e vulcanitas, nessa ordem. Esses materiais são acessíveis nas redondezas dos mesmos. As obsidianas, porém, aparecem em reduzida frequência e não se acham nas jazidas locais. O fato de haver fontes de obsidiana caracterizadas geo-quimicamente e localizadas pontualmente no espaço patagônico, possibilitou a identificação da origem dos achados nos resultados das análises geo-químicas de obsidianas de vários sítios no interior de Chubut e são discutidos em relação aos circuitos de mobilidade dos grupos humanos no espaço, estruturado pelas estradas. As conclusões apontam não apenas a existência de corredores de comunicação, mas também de encruzilhadas, ao mesmo tempo em que se propõe o uso da obsidiana associado a aspectos sociais ou simbólicos, e não somente tecnológicos.
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Dissertations / Theses on the topic "Obsidiaan"

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Leger, Travis. "A Spectre in Polished Obsidian." ScholarWorks@UNO, 2011. http://scholarworks.uno.edu/td/126.

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The author joins the Peace Corps in the hopes that he will discover who he really is yet he only finds frustration. Upon returning to the States he has a daughter and finds peace. Within this peace, as he types up the life history of a friend, he finally makes a breakthrough, yet the answer he finds is not to his liking.
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Maeda, Osamu. "The materiality of obsidian and the practice of obsidian use in the neolithic near east." Thesis, University of Manchester, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.506237.

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This thesis investigates the social significance of obsidian use in the Neolithic Near East. However, unlike many traditional studies, its aim is neither to study the formal patterns of obsidian exchange nor to clarify the regional and chronological variation of obsidian artefacts. Instead, it approaches the issue of the use of obsidian from an interpretative perspective that conceives of it as 'material practice' through which social relationships between communities were constructed.
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Vargo, Barbara A. "Characterization Of Obsidian Sources In Pantelleria, Italy." [Tampa, Fla.] : University of South Florida, 2003. http://purl.fcla.edu/fcla/etd/SFE0000217.

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Healey, Elizabeth Anne. "Role of obsidian in the late Halaf." Thesis, University of Manchester, 2000. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.488043.

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Fowler, Benjamin L. "Obsidian Toolstone Conveyance: Southern Idaho Forager Mobility." DigitalCommons@USU, 2014. https://digitalcommons.usu.edu/etd/3904.

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The purpose of this study is to understand how prehistoric people moved around the landscape and used major stone tool resources throughout the last 10,000 yr. B.P. in southern Idaho. Similar research has been reported in the Great Basin and western Wyoming and this study continues to fill the map with data about how large regions of the western United States were used prehistorically. This study specifically examined whether or not prehistoric mobility changed according to wet and dry climatic shifts. Based on these shifts archaeologists expect the regions people used to expand or shrink using an economic model of decision-making when foragers were confronted with the choice to stay in one resource area or move to another while pursuing plants and animals for food. To measure this decision prehistorically, obsidian projectile points and tools left behind throughout time were analyzed to determine where the stone originated geologically, a concept known as conveyance. The data were gathered from many regional studies and new sourcing of 139 artifacts from southeastern Idaho regional collections and excavations at the Fox Site near Thatcher, Idaho. In the compiled dataset are 4,440 artifacts from 640 archaeological sites in southern Idaho that originate from 37 obsidian sources. Analysis of this dataset grouped archaeology sites based on the percentage of different obsidian sources used, creating conveyance zone sets that were encompassed by statistically created ovals in mapping software. Four trans-Holocene conveyance zones are proposed and described: the Malad Conveyance Zone (MCZ), Timber Butte Conveyance Zone (TBCZ), Big Southern Butte Conveyance Zone (BSBCZ), and Snake River Conveyance Zone (SRCZ). These zones are then separated into four wet or dry climate periods and changes in mobility are compared to the economic decision model. Overall the MCZ and TBCZ both met the expectations of the model, while the BSBCZ and SRCZ did not. Another test of the data reveals that the number of obsidian sources used and the evenness of their use is not correlated with conveyance zone size, which helps confirm that these zones reproduce prehistoric behavior and are not a statistical product of the availability of obsidian in a region. The conveyance zones described in this study are comparable in size to those proposed in neighboring regions. Research also finds that southern Idaho conveyance zones were firmly established in the Early Holocene and shows that conveyance zones can be created from large datasets in a statistically robust manner and enable researchers to look at changes in forager mobility across large spatial and temporal scales. Expectations for forager mobility are partially supported by the variability wet and dry climate during the last 10,000 years B.P.
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Moutsiou, Theodora. "The obsidian evidence for the scale of social life during the Palaeolithic." Thesis, Royal Holloway, University of London, 2011. http://repository.royalholloway.ac.uk/items/4d9fed49-b0e5-9e03-1ada-20588eaf31d4/9/.

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The social aspect of modern hominin behaviour is a neglected subject within recent Palaeolithic research. This thesis addresses this issue arguing that modern social behaviour is reflected in the hominin ability to create and maintain extended social networks where relatedness is successfully sustained in absentia. Archaeologically, modern social behaviour can be detected through the investigation of raw material movement. This thesis argues that by concentrating on materials that are rare, distinctive and their origins can be securely identified it is possible to reconstruct the dimensions of the exchange networks involved in their circulation. The proposition being tested is that the greater the distances of raw material movement the more advanced the behavioural abilities of the individuals involved in the transfers. Obsidian provides an opportunity to reconstruct the scale of its movement and to use these data to infer the changing scale of social life during the Palaeolithic. Using the distances of obsidian movement a network model is developed and used in the reconstruction of the Palaeolithic social landscape. This research brings together for the first time all the published instances of obsidian use during the Palaeolithic. Obsidian-bearing sites from the Palaeolithic and located in Africa, Europe and the Near East are analysed with the aim of elucidating the evolution of modern social behaviour. GtJi15 (Kenya) and Bodrogkerestúr (Hungary) serve as the case studies for the exploration of the distance effect on technological and typological issues of the obsidian movement. The research demonstrated a strong correlation between obsidian use and long distances. The choice of obsidian makes sense within a system of exchange in which hominins chose to obtain their materials from elsewhere in order to maintain social links with other, more distant, groups. I argue that the scale of obsidian movement, although conditioned by a number of climatic, ecological and anatomical constraints, is actually rooted in social grounds. I thereby reject theories that see behavioural modernity as a recent advance in human history and argue for modern behaviour as gradual process that was initiated in East Africa at least as early as the Middle Stone Age.
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Aldenderfer, Mark. "Cronología y conexiones: evidencias precerámicas de Asana." Pontificia Universidad Católica del Perú, 2012. http://repositorio.pucp.edu.pe/index/handle/123456789/113402.

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Chronology and Connections: Preceramic Evidences at Asana SiteWith its long and continuous history of occupation, the site of Asana has a unique body of information to offer for the study of the Archaic Period in the south-central Andes. In this paper, I explore two important themes: the chronological sequence of occupation at the site with specific regard to the ways in which phases are defined, and the evidence from the site that describes the connections Asana had throughout its occupation with other regions of the Andean world. In the latter I examine in detail projectile point style and the sources of obsidian and other lithic materials found at the site. There is strong evidence for connections to the central Andes, the Colca valley, and the northern Chilean valleys.
Con su larga y continua historia de ocupación, el sitio de Asana tiene un único conjunto de información que ofrecer para el estudio del Periodo Arcaico en los Andes surcentrales. En este artículo, exploraremos dos temas importantes: la secuencia cronológica de la ocupación en el sitio con énfasis en los modos en que se definen las fases y la evidencia que describe las conexiones que Asana tuvo a través de sus ocupaciones con otras regiones del mundo andino. Por último se examinan en detalle los estilos de puntas de proyectil y las fuentes de obsidiana, así como otros materiales líticos encontrados en el sitio. Hay una fuerte evidencia para conexiones con los Andes Centrales, el valle del Colca y los valles del norte chileno.
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Morgan, Jessica Anne. "Obsidian Source Selection in the Early Bronze Age Cyclades." Scholar Commons, 2015. http://scholarcommons.usf.edu/etd/5746.

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From excavations of burial complexes of the Early Bronze Age Cyclades (c. 3000-2200 BC) we know that obsidian was just as important and as widely consumed in burial contexts as it was in contemporaneous household contexts; Early Bronze Age Cycladic tomb assemblages are dominated by beautiful obsidian blades produced through a unique knapping technique reserved for burial contexts (Carter 2007; Dickinson 1994). The lack of sourcing studies in the area is an unfortunate pitfall in Aegean archaeology, as understanding patterns of source selection provides us with precious insight into the complex social structures and behaviors that characterized these ancient communities. The research detailed in this thesis set out to accomplish these goals for obsidian assemblages from 11 Early Cycladic cemeteries. Structurally, these assemblages are dominated by pressure-flaked blades manufactured specifically for funerary consumption, but also include a small number of blade cores and some pieces of flaking debris. Contextually, the composition of the assemblages reflects the social significance of body modification amongst these islanders, with the blades themselves likely used for depilation, scarification, and tattooing, and the cores reemployed as pestles in the grinding of pigments, as evidenced by pigment residues located on the artifacts (Carter 1998). Two additional assemblages from settlements on Crete were analyzed, one from a Late Neolithic cave site and another from a Late Minoan settlement. These assemblages served both to provide additional regional and temporal context for the Early Cycladic findings and to advance obsidian sourcing efforts in the Aegean as a whole. In order to characterize the chemical profiles of these artifacts for sourcing purposes, this study employed portable X-ray fluorescence spectrometry, a non-destructive archaeometric method which allows for the time- and cost-effective mass-sampling of objects on-site. The results display clearly that the Early Cycladic artifacts are overwhelmingly made from Melian obsidian, and approximately 88% derive from the Sta Nychia source. How far-reaching this procurement bias is throughout the Early Bronze Age Aegean is currently difficult to say, though contemporary data from previous studies, as well as the results obtained from the two Cretan assemblages in this study, seem to show a similar pattern. Future research integrating regional traditions of obsidian source selection with previously defined regional distinctions in pressure-blade technology is necessary in order to begin to map communities of practice across the broader Aegean.
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Krueger, Elizabeth A. S. B. Massachusetts Institute of Technology. "Characterization of Kenyan obsidian through analysis of magnetic properties." Thesis, Massachusetts Institute of Technology, 2014. http://hdl.handle.net/1721.1/89968.

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Thesis: S.B. in Archaeology and Materials, Massachusetts Institute of Technology, Department of Materials Science and Engineering, 2014.
Cataloged from PDF version of thesis.
Includes bibliographical references (pages 46-49).
Obsidian is known to have been used for tool making in Kenya since the Early Stone Age, appearing as early as 974 thousand years ago (Durkee and Brown, in press). Past research has shown that the study of obsidian artifacts, and the determination of their provenance, can be very useful in reconstructing past civilizations and analyzing the spread of technology and trade. A number of different analytical techniques have previously been utilized to characterize obsidian sources for such studies, including magnetic analysis. This thesis reports the results of a preliminary study to explore the potential of utilizing magnetic analysis for the characterization of obsidian sources in Kenya. A total of 192 samples from 23 localities, belonging to 6 broadly defined petrologically distinct source groups, were analyzed using a vibrating sample magnetometer to test saturation magnetization (Ms), remanence magnetization (Mr), and coercivity (Hc). Comparing the ratio of Mr/Ms with Hc allowed clear differentiation among three of the analyzed obsidian sources (Groups 14, 19, and 29 from Merrick and Brown 1984a). The magnetic signatures reveal clues about the microscopic Fe mineral grains present in the samples, suggesting that magnetic characterization also has the potential to provide additional value as a supplementary technique to chemical analysis. Based on these preliminary results, it is proposed that future studies could examine the temperature dependence of the magnetic properties of obsidian to provide more complete characterization of the obsidian sources.
by Elizabeth A. Krueger.
S.B. in Archaeology and Materials
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Kletti, Holger. "Petrogenese des Obsidians von Ikizdere (NO Türkei)." [S.l.] : [s.n.], 2002. http://deposit.ddb.de/cgi-bin/dokserv?idn=964992965.

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Books on the topic "Obsidiaan"

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Cabral, Filomena. Obsidiana. Mem Martins, Portugal: Publicações Europa-América, 1990.

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Day, Diane. Obsidian. New York, USA: Pocket Books, 1987.

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Obsidian. Fort Collins, CO: Entangled Publishing, LLC, 2012.

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Day, Diane. Obsidian. New York, USA: Pocket Books, 1987.

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Hāẏadāra, Dāuda. Obsidian. New Delhi: Rupa & Co., 2003.

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Oliver, Teagan. Obsidian. Waterville, Me: Thorndike Press, 2008.

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Oliver, Teagan. Obsidian. Waterville, Me: Five Star, 2007.

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Hamilton, Laurell K. Obsidian butterfly. New York: ACE Books, 2000.

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Hamilton, Laurell K. Obsidian butterfly. New York: Ace Books, 2000.

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Quick, Amanda. Obsidian prey. Waterville, Me: Wheeler Pub., 2009.

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Book chapters on the topic "Obsidiaan"

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Shackley, M. Steven. "Current Issues and Future Directions in Archaeological Volcanic Glass Studies." In Archaeological Obsidian Studies, 1–14. Boston, MA: Springer US, 1998. http://dx.doi.org/10.1007/978-1-4757-9276-8_1.

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Green, R. C. "A 1990s Perspective on Method and Theory in Archaeological Volcanic Glass Studies." In Archaeological Obsidian Studies, 223–35. Boston, MA: Springer US, 1998. http://dx.doi.org/10.1007/978-1-4757-9276-8_10.

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Glascock, Michael D., Geoffrey E. Braswell, and Robert H. Cobean. "A Systematic Approach to Obsidian Source Characterization." In Archaeological Obsidian Studies, 15–65. Boston, MA: Springer US, 1998. http://dx.doi.org/10.1007/978-1-4757-9276-8_2.

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Tykot, Robert H. "Mediterranean Islands and Multiple Flows." In Archaeological Obsidian Studies, 67–82. Boston, MA: Springer US, 1998. http://dx.doi.org/10.1007/978-1-4757-9276-8_3.

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Shackley, M. Steven. "Intrasource Chemical Variability and Secondary Depositional Processes." In Archaeological Obsidian Studies, 83–102. Boston, MA: Springer US, 1998. http://dx.doi.org/10.1007/978-1-4757-9276-8_4.

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Weisler, Marshall I., and David A. Clague. "Characterization of Archaeological Volcanic Glass from Oceania." In Archaeological Obsidian Studies, 103–28. Boston, MA: Springer US, 1998. http://dx.doi.org/10.1007/978-1-4757-9276-8_5.

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Summerhayes, G. R., J. R. Bird, R. Fullagar, C. Gosden, J. Specht, and R. Torrence. "Application of PIXE-PIGME to Archaeological Analysis of Changing Patterns of Obsidian Use in West New Britain, Papua New Guinea." In Archaeological Obsidian Studies, 129–58. Boston, MA: Springer US, 1998. http://dx.doi.org/10.1007/978-1-4757-9276-8_6.

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Davis, M. Kathleen, Thomas L. Jackson, M. Steven Shackley, Timothy Teague, and Joachim H. Hampel. "Factors Affecting the Energy-Dispersive X-Ray Fluorescence (EDXRF) Analysis of Archaeological Obsidian." In Archaeological Obsidian Studies, 159–80. Boston, MA: Springer US, 1998. http://dx.doi.org/10.1007/978-1-4757-9276-8_7.

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Stevenson, Christopher M., James J. Mazer, and Barry E. Scheetz. "Laboratory Obsidian Hydration Rates." In Archaeological Obsidian Studies, 181–204. Boston, MA: Springer US, 1998. http://dx.doi.org/10.1007/978-1-4757-9276-8_8.

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Ambrose, W. R. "Obsidian Hydration Dating at a Recent Age Obsidian Mining Site in Papua, New Guinea." In Archaeological Obsidian Studies, 205–22. Boston, MA: Springer US, 1998. http://dx.doi.org/10.1007/978-1-4757-9276-8_9.

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Conference papers on the topic "Obsidiaan"

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Coblenz, Michael. "Obsidian: A Safer Blockchain Programming Language." In 2017 IEEE/ACM 39th International Conference on Software Engineering Companion (ICSE-C). IEEE, 2017. http://dx.doi.org/10.1109/icse-c.2017.150.

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Furukawa, Kuniyuki, Koji Uno, and Tatsuo Kanamaru. "FRACTURING AND REMOBILIZATION OF OBSIDIAN LAVA FLOW." In GSA Annual Meeting in Phoenix, Arizona, USA - 2019. Geological Society of America, 2019. http://dx.doi.org/10.1130/abs/2019am-332451.

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Andrews, Benjamin, and Magdalen Grismer. "WHY ARE OBSIDIANS CRYSTAL-FREE?" In GSA Connects 2023 Meeting in Pittsburgh, Pennsylvania. Geological Society of America, 2023. http://dx.doi.org/10.1130/abs/2023am-392433.

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Villani, Antonio, Daniele Riboni, Domenico Vitali, Claudio Bettini, and Luigi V. Mancini. "Obsidian: A scalable and efficient framework for NetFlow obfuscation." In IEEE INFOCOM 2013 - IEEE Conference on Computer Communications. IEEE, 2013. http://dx.doi.org/10.1109/infcom.2013.6566719.

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Villani, Antonio, Daniele Riboni, Domenico Vitali, Claudio Bettini, and Luigi V. Mancini. "Obsidian: A scalable and efficient framework for NetFlow obfuscation." In 2013 IEEE Conference on Computer Communications Workshops (INFOCOM WKSHPS). IEEE, 2013. http://dx.doi.org/10.1109/infcomw.2013.6562849.

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Nicolaysen, K. P., Sam H. Sheffer, Virginia L. Hatfield, Thomas Bartlett, Dixie L. West, and Kale M. Bruner. "SOURCING PREHISTORIC OBSIDIAN TOOLS IN THE ISLANDS OF FOUR MOUNTAINS, ALASKA." In GSA Annual Meeting in Denver, Colorado, USA - 2016. Geological Society of America, 2016. http://dx.doi.org/10.1130/abs/2016am-282051.

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Seitzinger, Zenja, and Kurt Knesel. "FLOW BANDS AND MICROLITE TEXTURES IN OBSIDIAN, MINYON FALLS RHYOLITE, AUSTRALIA." In 54th Annual GSA North-Central Section Meeting - 2020. Geological Society of America, 2020. http://dx.doi.org/10.1130/abs/2020nc-348340.

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Neve, S. R., and P. H. Barker. "Hydration depth profiling of obsidian surfaces using [sup 7]Li ions." In The fourteenth international conference on the application of accelerators in research and industry. AIP, 1997. http://dx.doi.org/10.1063/1.52536.

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Seitzinger, Zenja. "Flow bands and microlite textures in obsidian, Minyon Falls Rhyolite, Australia." In Proceedings of the Keck Geology Consortium. Keck Geology Consortium, 2020. http://dx.doi.org/10.18277/akrsg.2020.33.12.

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Wiejaczka, Joshua, Thomas Giachetti, James M. Watkins, James E. Gardner, Kathy Trafton, and Éamonn Needham. "OBSIDIAN PYROCLASTS: PRE-ERUPTIVE VANGUARD MAGMA, OR JUVENILE CLASTS FORMED AFTER FRAGMENTATION?" In GSA Annual Meeting in Indianapolis, Indiana, USA - 2018. Geological Society of America, 2018. http://dx.doi.org/10.1130/abs/2018am-322812.

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Reports on the topic "Obsidiaan"

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Pink, Jeremias. The geology, geochemistry, and geographic distribution of southern Idaho obsidian. Office of Scientific and Technical Information (OSTI), June 2023. http://dx.doi.org/10.2172/2352670.

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Asaro, Frank, Fred H. Stross, and Richard L. Burger. Breakthrough in precision (0.3 percent) of neutron activation analyses applied to provenience studies of obsidian. Office of Scientific and Technical Information (OSTI), October 2002. http://dx.doi.org/10.2172/807418.

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Mazer, J. J., J. K. Bates, C. M. Stevenson, and J. P. Bradley. The effect of glass composition on the experimental hydration of obsidian between 110 and 230{degree}C. Office of Scientific and Technical Information (OSTI), December 1991. http://dx.doi.org/10.2172/10144526.

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Thomas, Scott. The determination of a relative chronology for a surface archeological site using the obsidian hydration dating method. Portland State University Library, January 2000. http://dx.doi.org/10.15760/etd.3126.

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