Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 39 for “"Obsidian"”.
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A Spectre in Polished Obsidian
<p>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 …
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Characterization of Kenyan obsidian through analysis of magnetic properties
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 …
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Steward's southern Great Basin research validated through obsidian artifact sources
… X-Ray Fluorescence (EDXRF) analysis of obsidian artifacts collected from ethnohistoric sites in southern Nevada revealed patterns consistent with Julian Steward's documentation of Western Shoshone socioeconomics. Specific obsidian sources were predicted to be present in artifact samples …
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Obsidian procurement in the Gallinas Mountains of west central New Mexico
… X-ray fluorescence to analyze the surface obsidian assemblages of ten late Pithouse and Pueblo period sites in the Gallinas Mountains in order to determine source use and ultimately provide a narrow but precise indication of procurement strategy and inter-regional interaction. Results show …
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Patterns in glass : obsidian and economic specialisation in the Admiralty Islands
… our view to encompass the preceramic period. Obsidian is one of the few archaeologically visible materials which was distributed in both preceramic and ceramic times. This material is chosen as a “measuring device” to map variation in production and distribution patterns in the Admiralty …
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Patterns in glass : obsidian and economic specialisation in the Admiralty Islands
… our view to encompass the preceramic period. Obsidian is one of the few archaeologically visible materials which was distributed in both preceramic and ceramic times. This material is chosen as a “measuring device” to map variation in production and distribution patterns in the Admiralty …
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A study of obsidian in prehistoric central and Eastern Europe, and it's trace element characterization. An analytically-based study of archaeological obsidian in Central and Eastern Europe, an investigation of obsidian sources in this area, and the characterization of these obsidians using neutron activation analysis.
… there are at least eight geological sources of obsidian here, five of which have obsidian of a workable quality. There are a further three sources in the Slovak Zemplen, all of which provide workable obsidian. Sources in Central Slovakia are highly devitrified and not useable, and reported …
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Chetumal's Dragonglass: Postclassic Obsidian Production and Exchange at Santa Rita Corozal, Belize
<p>Obsidian is one of the most common materials preserved in the archaeological record of Mesoamerica. Because of this and obsidian's unique chemical properties, it has become one of the most common means by which to explain ancient exchange and production. Northern Belize has largely been absent …
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The Trade and Exchange of Obsidian in the Basin of Mexico during the Classic Period
… thesis details the trade and exchange of Pachuca obsidian in the Basin of Mexico, focusing on the Teotihuacan Valley region, during the Classic Period by incorporating two intraregional models for Teotihuacan economy of Pachuca obsidian with both its urban and rural areas. The Tlajinga district is …
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Late Classic and Epiclassic obsidian procurement and consumption in the southeastern Toluca Valley, Central Highland Mexico
… seasons of field research, more than 11,000 obsidian artifacts were excavated from two platform mounds at the Late Classic and Epiclassic period site locus of Santa Cruz Atizapan in the Toluca Valley, Mexico. These artifacts were studied using an attribute analysis, chemical sourcing …
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A geochemical look at obsidian procurement and exchange in the Medio period world : a case study 76 Draw (LA 156980)
… REQUEST.] Geochemical provenance analysis of obsidian is a productive avenue for studying social interaction and lithic raw material procurement strategies in the U.S. Southwest. Here the results of the analysis of 180 obsidian artifacts recovered from 76 Draw, a Medio period (A.D.1200 to …
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Radioanalytical multi-elemental analysis : new methodology and archaeometric applications
… to the sourcing of Egyptian limestone and Kenyan obsidian, and the development of a method to determine titanium, barium, and arsenic concentrations in obsidian using epithermal neutron activation. INAA, when coupled with rigorous statistical methods, including principal component analysis and …
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Characterization of particles created by laser-driven hydrothermal processing
… materials. Two naturally occurring materials, obsidian and tektite, were used as targets for this technique. Characterization of sample materials before and after laser processing was conducted through multiple techniques such as optical microscopy, X-ray diffraction, scanning electron …
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A preliminary analysis of the lipid contents of a biofilm from a Yellowstone hydrothermal pool
… springs at Yellowstone National Park, such as Obsidian Pool, have been extensively studied as a source for previously unidentified microorganisms. Most of the previous studies focused on the genomic diversity of these environments, but recent interest in environmental samples for the study of …
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Crescent Hill Chert: A Geological and Cultural Study of a Raw Material Procurement Area in Yellowstone National Park, Wyoming
… found in archaeological assemblages, next to Obsidian Cliff obsidian. Lithic raw materials from both source areas within well-dated hearth contexts indicate a temporal change in use of the materials from the Late Archaic to the Late Prehistoric periods, likely due to changes in human use of …
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Crescent Hill Chert: A Geological and Cultural Study of a Raw Material Procurement Area in Yellowstone National Park, Wyoming
… found in archaeological assemblages, next to Obsidian Cliff obsidian. Lithic raw materials from both source areas within well-dated hearth contexts indicate a temporal change in use of the materials from the Late Archaic to the Late Prehistoric periods, likely due to changes in human use of …
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Experimental studies on the adsorption of SO2 on volcanic ashes
… 1600°C. The natural volcanic glasses were Lipari obsidian and Puu Waawaa obsidian. Before the adsorption experiments the glasses were ground up to powder with a planetary mill under dry conditions. The surface area of the powder then was determined with a surface area analyzer. Adsorption …
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Later Stone Age Lithic Raw Material Use at Lukenya Hill, Kenya
… and compared. Electron microprobe analysis of obsidian artifacts from GvJm62 identified the source localities of raw materials. Differences in typology and raw material source use among the Lukenya Hill sites show that the sites differed in function, size, and duration of occupation. Earlier …
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Rediscovering an Upland Site: The Manastash Pines (45KT346) Kittitas County, Washington
… artifacts were primarily cherts, but six were obsidian. Four XRF obsidian samples were sourced to Oregon. Projectile points show use over the last 8,000 years from the Vantage phase through the Cayuse phase. This project demonstrates the data available from previously excavated sites.
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Recovering Lost Information From Avocational Projectile Point Collections
… X-ray fluorescence (pXRF) analysis identified 62 obsidian sources from the northwest Great Basin, although it was dominated by Beatys Butte obsidian. Many morphological, typological, and sourcing characteristics of the Wild/Clymer Collection sample are consistent with professionally analyzed …
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