robert z selden jr, caddo, archaeology, biface, george c davis, caddo mounds state historic site, nagpra, museum studies, lithic, stone tool, archaeology, culture heritage, cultural heritage, history

Preprint available for study of Gahagan biface morphology

New paper in-press at Digital Applications in Archaeology and Cultural Heritage with John Dockall and Harry Shafer on the morphological variability of Gahagan bifaces. View and download the preprint here, or by clicking on the image below.

Abstract

This analysis of Gahagan biface morphology enlists the three largest samples of Gahagan bifaces, to include that of the type site (Gahagan Mound) as well as the Mounds Plantation and George C. Davis sites. Results indicate a significant difference in Gahagan biface morphology at the Mounds Plantation site when compared with Gahagan bifaces from the Gahagan Mound and George C. Davis sites. Tests for allometry and asymmetry were not significant. The test of morphological disparity indicates that Gahagan bifaces produced at the Mounds Plantation site occupy a more restricted range of morphospace than those produced at Gahagan Mound, providing evidence for standardisation and diversity in Caddo biface production. While the sample includes a wide range of variability, the test of morphological integration indicates that Gahagan bifaces are significantly integrated, meaning that those traits used to characterise their shape (blade and base) vary in a coordinated manner. These results articulate with a shift in Caddo bottle morphology over the same geography, potentially indicating two previously unrecognised and morphologically-distinct lithic and ceramic production areas.

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robert z selden jr, computer aided inspection, human mandible, sudan, ct scan, 3d scan, 3d model, 3d surface model, nurbs, deviation, geomagic design x, geomagic control x, sudan, university of colorado boulder, heritage, culture, geometric morphometrics

Advanced 3D Imaging and Morphometrics for Archaeologists

I will be teaching a section of the National Center for Preservation Technology and Training’s Advanced 3D Imaging and Morphometrics for Archaeologists workshop from October 15 – 18, 2018 in the Conservation Laboratory at the Arizona State Museum, on the campus of the University of Arizona.

Other instructors include Bernard K. Means, Loren Davis, and Michael Shott who will be discussing public archaeology and outreach, 3D projectile point analysis, and theory and methods, respectively.

robert z selden jr, archaeology, archeology, geometric morphometric, ceramic, analysis, mathematics, statistics, 3d, 3d scan

The objective of this workshop is to share and discuss the latest uses of 3D imaging of archaeological artifacts in order to improve the utility and precision of analyses that employ 3D data to assess morphological variation. Additional discussions will cover topics related to digital curation and public archaeology, where the utility of 3D scans reach beyond traditional analyses. To accomplish this, we are bringing together selected experts to one location to share their expertise. This four-day event will include lectures, a hands-on practicum, data analysis demonstrations, and discussions of best practices and data curation.

robert z selden jr, caddo, archaeology, ceramic, pot, pottery, geometric morphometrics, shape, size, form, allometry, asymmetry, geomagic design x, culture, heritage, history, museum studies

Find more information, and to register to attend the workshop, click here or follow this link – https://www.ncptt.nps.gov/events/advanced-3d-imaging-and-morphometrics-for-archeologists/.

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robert z selden jr, blackwater draw, clovis, agate basin, 3d, 3d scan, 3d model, projectile point, dart point, new mexico, culture, history, prehistory, heritage

3D Scan Data for Selected Artifacts from Blackwater Draw National Historic Landmark

Between February 8-11, 2016, selected artifacts from the Blackwater Draw National Historic Landmark (LA3324) were scanned in advance of a grant proposal to digitally aggregate the Clovis-era artifacts from the Clovis type site. These data were collected using a NextEngineHD running ScanStudioHD Pro, and post-processed in Geomagic Design X 2016.0.1. All data associated with this project are publicly available (open access) and accessible in Zenodo under a Creative Commons Attribution license, where they can be downloaded for use in additional projects and learning activities. These data have the capacity to augment a variety of research designs spanning the digital humanities, applications of geometric morphometrics, and many others. Additionally, these scans will augment a wide range of comparative research topics throughout the Americas and beyond. Reuse potential for these data is significant.

Unprocessed 3D data are included on the landing page, and links to the processed files are included in the data paper. Download the data paper here:: 3D Scan Data for Selected Artifacts from Blackwater Draw National Historic Landmark

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robert z selden jr, gault, clovis, 3d, 3d scan, 3d model, projectile point, dart point, texas, culture, history, prehistory, heritage

3D Scan Data for Selected Clovis-Age Artifacts from the Gault Site (41BL323)

On August 19, 2016, selected Clovis artifacts from the Gault site (41BL323) were scanned in advance of a large collaborative research project. These data were collected using a NextEngineHD running ScanStudioHD Pro, and were post-processed in Geomagic Design X 2016.0.1. All data associated with this project have been made publicly available (open access) and are accessible in Zenodo under a Creative Commons Attribution license, where they can be downloaded for use in additional projects and learning activities. These data have the capacity to augment a variety of research designs spanning the digital humanities, applications of geometric morphometrics, and many others. Additionally, these scans will augment a wide range of comparative research topics throughout the Americas and beyond. Reuse potential for these data is significant.

Unprocessed 3D data are included on the landing page, and links to the processed files are included in the data paper. Download the data paper here: 3D Scan Data for Selected Clovis-Age Artifacts from the Gault Site (41BL323)

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Nova Publicação para Cerâmica Calderon

 

Valentin Calderón figura como um dos pioneiros da arqueologia no Nordeste do Brasil. Membro do Programa Nacional de Pesquisas Arqueológicas entre as décadas de 1960 e 70, foi responsável pelos levantamentos sistemáticos nos sítios arqueológicos do estado da Bahia e identificou a tradição cerâmica Aratu. Calderón foi também o idealizador do Museu de Arqueologia e Etnologia da Universidade Federal da Bahia (MAE/UFBA), que hoje salvaguarda sua coleção arqueológica e seu arquivo pessoal. Em uma parceria realizada com pesquisadores do Center for Regional Heritage Research da Stephen F. Austin University, Texas, EUA, os artefatos cerâmicos da coleção Valentin Calderón foram digitalizados através do uso de tecnologias 3D. No total, foram escaneados 27 objetos cerâmicos, dentre vasilhames e urnas funerárias. A iniciativa ofereceu subsídios para pensar a digitalização como forma de preservação, principalmente no que se refere à conservação e restauração, documentação e comunicação do acervo. Os modelos 3D resultantes do processo de digitalização permitem uma análise detalhada dos artefatos e obtenção de dados sem a manipulação direta, contribuindo de forma relevante para a preservação dos acervos. Os dados e modelos serão, em breve, disponibilizados para a pesquisa e também utilizados na nova exposição de longa duração do MAE/UFBA.

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