scholarly journals Qualitative and Quantitative Analyses of Surface Alterations of Stone Tools Made of Raw Materials from the Carpathian Basin

2021 ◽  
Vol 10 (3) ◽  
pp. 1-11
Author(s):  
Antony Borel ◽  
Raphaël Deltombe ◽  
Julie Marteau ◽  
Philippe Moreau ◽  
Maxence Bigerelle ◽  
...  
Keyword(s):  
Raw Materials ◽  
Stone Tools ◽  
Archaeological Sites ◽  
Reference Collection ◽  
Surface Measurements ◽  
Alteration Processes ◽  
Quantitative Analyses ◽  
Identification And Characterization ◽  
Experimental Reference

Wear analysis performed on archaeological stone tools from prehistory aims at characterizing their surface alterations in order to determine their functions and describe past human technical behaviors. However, the reliability and repeatability of the method is questioned and there is a major difficulty facing scientists analyzing wear, which is related to proposing quantified and repeatable analyses and interpretations of taphonomic and anthropogenic (related to manufacture and use) evidence. We propose the creation of an experimental reference collection of surface alterations focused primarily on selected stone types commonly found at Hungarian archaeological sites. This collection will allow the characterization of the topographic signatures of manufacture, use, and taphonomic processes. The qualitative (through observation using optical microscopy) and quantitative (through surface measurements using confocal microscopy) analyses will aim at examining: 1) the variability of surface alterations, 2) protocols that can allow the identification and characterization of surface topographic signatures, and 3) the appropriate metrological setups that will allow for each of the alteration processes to be differentiated. We present here the results of the preliminary experiments, which involved flakes for bone and reed processing made of six different raw materials. It has been confirmed that evidence of use can be identified on each one of them. Beyond the presentation of the first images from the reference collection, we briefly present the future phases of the project.

scholarly journals A ocupação humana antiga (11-7 mil anos atrás) do Planalto Meridional Brasileiro: caracterização geomorfológica, geológica, paleoambiental e tecnológica de sítios arqueológicos relacionados a três distintas indústrias líticas

2020 ◽  
Vol 13 (6) ◽  
pp. 2553
Author(s):  
Pedro Michelutti Cheliz ◽  
João Carlos Moreno de Sousa ◽  
Gabriela Sartori Mingatos ◽  
Mercedes Okumura ◽  
Astolfo Gomes de Mello Araujo
Keyword(s):  
Significant Variation ◽  
Raw Materials ◽  
Archaeological Sites ◽  
Data Sets ◽  
Human Settlement ◽  
Human Occupation ◽  
Natural Landscapes ◽  
Lithic Artifacts ◽  
The Relationship

Com o objetivo de ponderar conexões entre quadros naturais e a ocupação humana pré-colonial, caracterizou-se os artefatos e a contextualização geomorfológica e ambiental de quatro sítios líticos vinculados a antigos registros de grupos caçadores-coletores do sul e sudeste do Brasil, associados a três distintas indústrias líticas. Elencou-se associação dos sítios com terrenos de baixos declives e altimetrias em seus respectivos contextos (terrenos mais estáveis para fixação humana), adjacentes a córregos e próximos de faixas do terreno que registram maiores inclinações e desníveis verticais, mais propensas a apresentarem afloramentos rochosos (fontes potenciais de matérias-primas para a confecção de ferramentas lascadas). Elencou-se fontes de matérias-primas nos entornos de cada sítio e as matérias-primas associadas aos artefatos, e ponderou-se a correlação entre os dois conjuntos de dados. Analisou-se a relação dos padrões tecnológicos de artefatos líticos com a caracterização petrográfica das matérias-primas, verificando-se quais silcretes semelhantes foram usadas para produção de artefatos distintos. Ainda, verificou-se que alguns dos produtos líticos de um dos sítios analisados mostram padrões tecnológicos semelhantes, mesmo quando obtidos a partir de silcretes distintos. Caracterizou-se ausência de variação significativa dos atributos tecnológicos dos artefatos registrados em diferentes posicionamentos verticais nos perfis das unidades de escavação nas quais foram registrados, mesmo quando mostram-se associados a registros paleoambientais distintos (alternâncias entre climas mais secos que os atuais e condições caracterizadas por incrementos de umidade no intervalo de 11 a 7 mil anos atrás).Palavras chave: sítios arqueológicos líticos; Holoceno Inicial, paleoclimas, ameríndios, geoarqueologia The ancient human occupation (11-7 thousand years ago) of the Southern Brazilian Plateau: geomorphological, geological, paleoenvironmental and technological characterization of archaeological sites related to three distinct lithic industries A B S T R A C T In order to discuss connections between the natural landscapes and pre-colonial human occupation, were characterized the artifacts and the geomorphological and environmental contextualization of four lithic sites linked to ancient records of hunter-gatherer groups from the south and southeast of Brazil, associated with three distinct lithic industries. The association of sites with low slopes and altimetry in their respective contexts (more stable terrains for human settlement), adjacent to rivers and close to terrains that register greater inclinations and vertical unevenness, more likely to present rocky outcrops (potential sources of raw materials for making chipped tools) was listed. Were characterized sources of raw materials in the surroundings of each site, the raw materials associated with the artifacts, and the correlation between the two data sets was considered. The relationship between the technological standards of lithic artifacts and the petrographic characterization of the raw materials was analyzed, verifying which similar raw materials were used to produce different artifacts. Also, it was found that some of the lithic products from one of the analyzed sites show similar technological patterns, even when obtained from different raw materials. There was a lack of significant variation in the technological attributes of the artifacts recorded in different vertical positions in the profiles of the excavation units in which they were recorded, even when they are associated with different paleoenvironmental records (alternations between drier climates than current and others characterized by increments in the moisture between 11 to 7 thousand years ago).Keywords: lithic archaeological sites; Initial Holocene, paleoclimates, amerindians, geoarchaeology 

Experimental implement manufacture and use; a case study from Olduvai Gorge, Tanzania

1981 ◽  
Vol 292 (1057) ◽  
pp. 189-195 ◽  
Keyword(s):  
Raw Materials ◽  
Stone Tools ◽  
Technical Level ◽  
Archaeological Sites ◽  
Olduvai Gorge

Experiments involving the manufacture and use of stone tools are described. The original tools that served as models came from two sites in upper bed IV at Olduvai Gorge, Tanzania. The following conclusions are drawn. Widespread use of terms such as ‘crude’ or ‘refined’ in describing stone tools tells us nothing of the technical level achieved by the makers of the assemblages. The different qualities of the available raw materials, the forms in which they occur and how they function when used may have influenced the tool maker’s designs and the morphology of the tools. The experiments suggest uses for the tools that are relevant to our understanding of what is found on some archaeological sites.

scholarly journals Functional analysis of sandstone ground stone tools: arguments for a qualitative and quantitative synergetic approach

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Andrea Zupancich ◽  
Emanuela Cristiani
Keyword(s):  
Functional Analysis ◽  
Quantitative Methods ◽  
Methodological Approach ◽  
Stone Tools ◽  
Test Surface ◽  
Qualitative And Quantitative ◽  
Ground Stone ◽  
Use Wear ◽  
Surface Measurements ◽  
Quantitative Analyses

Abstract In the last few years, the application of quantitative methods in the field of use wear analysis has grown considerably, involving the use of different techniques. A development in surface measurements approaches has become necessary as standard assessments based upon qualitative functional analysis are often affected by a degree of subjectivity and a limited reproducibility. To advance the current methodological debate on functional analysis of ground stone technology, we present a combined methodological approach, including qualitative and quantitative analyses, applied to the study of experimental sandstone ground stone tools. We test surface quantification at a macro and micro-scale, paired with the observation and description of residue and use wear connected to the processing of plant, animal and mineral matters. Our results provide an exhaustive quantitative dataset concerning surface modifications associated with different uses and suggest an analytical workflow for the functional analysis of both experimental and archaeological ground stone assemblages. We also highlight the limitation and pitfalls of an exclusive adoption of quantitative methods in the study of ancient tool use demonstrating how a synergetic approach can enhance the quality, reproducibility and comparability of functional data.

Recycling of Edible Oil Pouches: Composition and Thermal Stability

2005 ◽  
Vol 21 (2) ◽  
pp. 117-137 ◽  
Author(s):  
Arup Choudhury ◽  
Mandira Mukherjee ◽  
Basudam Adhikari
Keyword(s):  
Thermal Stability ◽  
Raw Materials ◽  
Value Added ◽  
Edible Oil ◽  
Solvent Fractionation ◽  
Recycled Polyethylene ◽  
Identification And Characterization ◽  
Recycled Polymer ◽  
Value Added Products

Recycled polyethylene containing very small amounts of nylon-6 or PET, which is the source of flexible oil pouches, may find applications as raw materials for other polymer products after the recycled polymer is properly identified and characterized before reprocessing. Proper identification and characterization of the polymer components present in the waste has considerable importance for obtaining value-added products. In this investigation, post-use oil pouch films, collected from municipal garbage, were first subjected to sorting, washing and drying. Then the dried films were fractionated by dissolving in solvents. The isolated component polymers were characterized and identified by solvent fractionation, FTIR, DSC-TGA and WAXD analysis.

Roadmap for Quality by Design Implementation for Dietary Supplements

2020 ◽  
Vol 103 (1) ◽  
pp. 103-116
Author(s):  
Mohamed A Albadry ◽  
Ikhlas A Khan
Keyword(s):  
Dietary Supplements ◽  
Dietary Supplement ◽  
Quality By Design ◽  
Raw Materials ◽  
Regulatory Agencies ◽  
Comprehensive Understanding ◽  
The Relationship ◽  
Identification And Characterization ◽  
Quality Variation

Abstract Background: Recently, there is a growing interest in quality by design (QbD) in the dietary supplements industry. Objective: Effective QbD implementation necessitates a comprehensive understanding of multiple factors such as; the relationship between the critical qualities attributes (CQAs) and the scientific properties of the dietary supplement, the relationship between the manufacturing process, CQAs and the variability in raw materials. There are still two critical challenging concerns to be addressed in the implementation of QbD for herbal drugs. First, the quality variation of botanical raw materials and second, the difficulty in defining the satisfactory ranges of CQAs. Method: In order to tackle these challenges, this review provides a snapshot of the numerous techniques that can be used in the identification and characterization of the botanical raw materials, therefore, will help in the successful QbD implementation for botanicals and dietary supplements. Conclusions: In order to implement this approach and to be considered in the current dietary supplement regulations, fruitful discussions and collaborations between academia, industry and regulatory agencies are required.

scholarly journals IDENTIFICAÇÃO E CARACTERIZAÇÃO DOS SÍTIOS ARQUEOLÓGICOS DE REGISTROS RUPESTRES NO ASSENTAMENTO LAMEIRÃO, DELMIRO GOUVEIA-AL

2020 ◽  
Vol 34 (3) ◽  
pp. 61
Author(s):  
Flávio Augusto de Aguiar Moraes ◽  
Henrique Correa Da Silva ◽  
José Aparecido Moura de Brito ◽  
Mauro Alexandre Farias Fontes
Keyword(s):  
Present Article ◽  
Three Dimensions ◽  
Archaeological Sites ◽  
Rock Paintings ◽  
Identification And Characterization ◽  
Photographic Records

Partindo do pressuposto que o revisionamento no campo arqueológico é de suma importância. O presente artigo objetivou identificar e caracterizar os sítios arqueológicos encontrados no Assentamento Lameirão, Delmiro Gouveia-AL. Para tal efeito, as análises foram feitas a partir do método de Silva (2015), que consiste em três dimensões: temática, cenográfica e técnica. Fez-se também: um georreferenciamento dos sítios arqueológicos, registros fotográficos, a altimetria. Assim, proporcionando o reconhecimento do tipo de tradição, contabilização de sítios rupestres, números de registros e comparativo entre os locais pesquisados (Sítio do Dito, Sitio Lajedo do Forró e Sítio Veredas).IDENTIFICATION AND CHARACTERIZATION OF THE ARCHAEOLOGICAL SITES OF RUPESTRIAN RECORDS IN THE LAMEIRÃO SEATING, DELMIRO GOUVEIA-AL ABSTRACTAssuming that the revision in the archaeological field is of paramount importance. The present article aimed to identify and characterize the archaeological sites found in the Lameirão Assen-tion, Delmiro Gouveia-AL. For this purpose, the analyzes were made using Silva's method (2015), which consists of three dimensions: thematic, scenographic and technical. It was also done: a georeferencing of archaeological sites, photographic records, altimetry. Thus, providing recognition of the type of tradition, accounting of rock sites, numbers of records and comparative among the sites surveyed (Sítio do Dito, Sitio Lajedo do Forró and Sítio Veredas).Keywords: Lameirão; Tradition Agreste; Rock paintings.

scholarly journals Canteras-taller El Ranchito (Dpto. Ischilín, Córdoba). Una primera aproximación a la caracterización de las fuentes y al análisis de los conjuntos líticos

2017 ◽  
Vol 10 ◽  
pp. 59
Author(s):  
Gisela Sario ◽  
Eduardo Pautassi ◽  
Marcos Salvatore
Keyword(s):  
Archaeological Site ◽  
Stone Tools ◽  
Raw Material ◽  
Archaeological Sites ◽  
Northern Province ◽  
Archaeological Research ◽  
High Quality ◽  
Siliceous Rock ◽  
Lithic Artifacts

<p>El objetivo de este trabajo es presentar una primera aproximación a la caracterización de los afloramientos y el análisis tecno-tipológico de materiales líticos recolectados en una cantera-taller, ubicada en la localidad arqueológica El Ranchito (valle de Copacabana, Dpto. Ischilín), en el norte de la provincia de Córdoba. A lo largo de las investigaciones arqueológicas en el valle se menciona la presencia de una materia prima lítica de muy buena calidad para la talla, una roca silícea, de la cual se han hallado puntas de proyectil y otros artefactos formatizados. Si bien su presencia es escasa en comparación con otras materias primas como el cuarzo, la misma se encuentra en la mayoría de los sitios arqueológicos de la región. En la localidad El Ranchito se han identificado tres fuentes primarias de aprovisionamiento de este material, como resultado de cuatro prospecciones en donde se realizaron ocho cuadrículas de recolección de material lítico en diferentes sectores. Los relevamientos permitieron establecer la disponibilidad natural de esta materia prima, extrayéndose muestras de la fuente identificada que fueron inspeccionadas con microscopio e identificadas como silcrete. Aquí se presentan los resultados del análisis de la primera unidad de recolección realizada, en la que se recuperaron en su mayoría ecofactos y desechos de talla, y en menor proporción núcleos e instrumentos. Esto nos permite inferir que la actividad principal era el descortezamiento de nódulos.</p><p><br /><strong>Abstract</strong></p><p><br />This paper aims at presenting a first approach to the characterization of outcrops and techno-typological analysis of lithic materials collected in a quarry-workshop, located in the archaeological site El Ranchito (Valle de Copacabana, District of Ischilín) in the northern province of Córdoba. During archaeological research in the valley, we found lithic raw material of high quality for carving, a siliceous rock from which arrowheads were identified, in addition toother stone tools. While its presence is low as compared with other lithic artifacts such as quartz, such material was found in most archaeological sites in the region. In El Ranchito, three sources of this material were identified, in which quarry-workshop areas were formed. These resulted from four surveys in which eight collection grids of lithic material were conducted in different areas. The surveys helped establish the natural availability of this raw material, through which samples were analyzed under microscope and identified as silcrete. We report the results from the analysis of the first collection unit, in which we found, mostly, ecofacts and debitage, and, to a lesser extent, cores and tools, allowing us to infer that tasks related to the removal of nodule cortex were performed.</p><p> </p>

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