Robert J Speakman
Dados Biográficos
| ID | 196508 |
|---|---|
| NOME | Robert J Speakman |
| PRENOMES | Robert J |
| SOBRENOME | Speakman |
| ASSINATURA | SPEAKMAN R J |
| AFILIAÇÕES | University of Georgia |
| ORCID | 0000-0003-2063-154X |
| VERIFICADO | Sim |
| TOTAL DE OBRAS | 45 |
| TOTAL DE CITAÇÕES | 710 |
| TOTAL COMO AUTOR | 45 |
| TOTAL COMO EDITOR | 1 |
| PRIMEIRO ANO DE PUBLICAÇÃO | 1995 |
| ANO MAIS RECENTE DE PUBLICAÇÃO | 2019 |
| ÍNDICE H | 12 |
Radiocarbon Pretreatment Comparisons of Bald Cypress ( Taxodium Distichum ) wood samples from a massive buried deposit on the Georgia Coast, USA
We sampled individual growth rings from three ancient remnant bald cypress ( Taxodium distichum ) trees from a massive buried deposit at the mouth of the Altamaha River on the Georgia Coast to determine the best technique for radiocarbon ( 14 C) dating pretreatment. The results of our comparison of traditional ABA pretreatment and holocellulose and α-cellulose fractions show no significant differences among the pretreatments ( 14 C tree-ring chro…
A multi-regional obsidian database for the Eastern Plains
Travis W. Jonesa* http://orcid.org/0000-0001-8237-1726, Robert J. Speakmana, William T. Billeckb & Robert J. Hoardc http://orcid.org/0000-0002-9577-5321a University of Georgiab Smithsonian Institutionc Kansas Historical Society
The movement of obsidian in Subarctic Canada
Great Lakes Copper and Shared Mortuary Practices on the Atlantic Coast
Analysis of human remains and a copper band found in the center of a Late Archaic (ca. 5000-3000 cal BP) shell ring demonstrate an exchange network between the Great Lakes and the coastal southeast United States. Similarities in mortuary practices suggest that the movement of objects between these two regions was more direct and unmediated than archaeologists previously assumed based on 'down-the-line' models of exchange. These findings challenge…
Steatite characterization using X-ray fluorescence and insights into Northern Iroquoian interregional interaction
Choosing a Path to the Ancient World in a Modern Market
Over the past 30 years, the number of US doctoral anthropology graduates has increased by about 70%, but there has not been a corresponding increase in the availability of new faculty positions. Consequently, doctoral degree-holding archaeologists face more competition than ever before when applying for faculty positions. Here we examine where US and Canadian anthropological archaeology faculty originate and where they ultimately end up teaching.…
Instrumental neutron activation analysis of Inka and local pottery from northern Chile's Atacama Desert
Evidence of Eurasian metal alloys on the Alaskan coast in prehistory
The Copper CHARM Set
This paper introduces a new set of certified reference materials designed to aid scientists and conservators working in cultural heritage fields with quantitative X-ray fluorescence analysis of historical and prehistoric copper alloys. This set has been designated as the Copper CHARM Set (Cultural Heritage Alloy Reference Material Set). The Copper CHARM Set is designed to be used by a wide range of museum-, art- and archaeology-oriented scientist…
New Evidence for a Possible Paleolithic Occupation of the Eastern North American Continental Shelf at the Last Glacial Maximum
Portable XRF analysis of archaeological sediments and ceramics
Vemurafenib and ipilimumab
Vemurafenib and ipilimumab are important advances in the treatment of metastatic melanoma. Benefit is typically short lived for vemurafenib and uncommon for ipilimumab. Neither agent is curative, and clinical trials remain an alternative first-line treatment option.
Serpentine Hot Springs, Alaska
Silo science and portable XRF in archaeology
Potters and pigments
Sourcing ceramics with portable XRF spectrometers? A comparison with Inaa using Mimbres pottery from the American Southwest
Earliest art in the Americas
Romita pottery revisited
Ancient social landscapes of northwestern Argentina
Macusani obsidian from southern Peru
Initial source evaluation of archaeological obsidian from the Kuril Islands of the Russian Far East using portable XRF
Chemical Characterization of Tin‐lead Glazed Pottery From the Iberian Peninsula and the Canary Islands
Majolica pottery was the most characteristic tableware produced in Europe during the Medieval and Renaissance periods. Because of the prestige and importance attributed to this ware, Spanish majolica was imported in vast quantities into the Americas during the Spanish Colonial period. A study of Spanish majolica was conducted on a set of 186 samples from the 10 primary majolica production centres on the Iberian Peninsula and 22 sherds from two ea…
Multiple Dendrochronological Signals Indicate the Eruption of ParíCutin Volcano, Michoacán, Mexico
The eruption of Parícutin (1943–1952), a cinder cone volcano in Michoacán, Mexico, caused dendrochronological and dendrochemical responses that might be useful as general dating tools for eruptions. For the eruption period, pines near Parícutin have slightly suppressed ring widths plus high inter-annual variability of width. Wood anatomy changes include traumatic resin ducts and thin bands of false latewood. Dendrochemistry of tree rings shows li…
Ceramic production, consumption and exchange in the Banda area, Ghana
Exchange patterns, boundary formation, and sociopolitical change in Late Bronze Age Southern Caucasia
Portable XRF analysis of archaeological sediments and ceramics
Silo science and portable XRF in archaeology
Comparison of XRF and PXRF for analysis of archaeological obsidian from southern Perú
Sourcing ceramics with portable XRF spectrometers? A comparison with Inaa using Mimbres pottery from the American Southwest
Lead Isotope Data From the Isotrace Laboratory, Oxford
Initial source evaluation of archaeological obsidian from the Kuril Islands of the Russian Far East using portable XRF
Serpentine Hot Springs, Alaska
Sourcing the Palygorskite Used in Maya Blue
Maya Blue is an unusual blue pigment consisting of a clay-organic complex of indigo and the unusual clay mineral palygorskite (also called attapulgite). Used on pottery, sculpture, and murals from the Preclassic to Late Colonial periods largely in Mesoamerica, blue was the color of sacrifice and ritual. Did the palygorskite used to make Maya Blue come from a restricted source in Yucatán like Shepard, Arnold, Arnold and Bohor believed, or from wid…
The Copper CHARM Set
This paper introduces a new set of certified reference materials designed to aid scientists and conservators working in cultural heritage fields with quantitative X-ray fluorescence analysis of historical and prehistoric copper alloys. This set has been designated as the Copper CHARM Set (Cultural Heritage Alloy Reference Material Set). The Copper CHARM Set is designed to be used by a wide range of museum-, art- and archaeology-oriented scientist…
Earliest art in the Americas
Macusani obsidian from southern Peru
Chemical characterization of majolica from 14th–18th century production centers on the Iberian Peninsula
The movement of obsidian in Subarctic Canada
Exchange patterns, boundary formation, and sociopolitical change in Late Bronze Age Southern Caucasia
Romita pottery revisited
Obsidian use at the Ushki Lake complex, Kamchatka Peninsula (Northeastern Siberia)
Instrumental neutron activation analysis of Inka and local pottery from northern Chile's Atacama Desert
Archaeometry at the University of Missouri Research Reactor and the Provenance of Obsidian Artefacts in North America
Descriptions of the history of the Archaeometry Laboratory at the University of Missouri Research Reactor and the procedures used for instrumental neutron activation analysis of archaeological materials are presented. The laboratory was established in 1988 to support students and faculty from the University of Missouri and other universities who were interested in archaeological research involving compositional analysis. The results obtained from…
Elymian regional interaction in Iron Age western Sicily
Choosing a Path to the Ancient World in a Modern Market
Over the past 30 years, the number of US doctoral anthropology graduates has increased by about 70%, but there has not been a corresponding increase in the availability of new faculty positions. Consequently, doctoral degree-holding archaeologists face more competition than ever before when applying for faculty positions. Here we examine where US and Canadian anthropological archaeology faculty originate and where they ultimately end up teaching.…
Evidence of Eurasian metal alloys on the Alaskan coast in prehistory
Ancient social landscapes of northwestern Argentina
Characterizing the Stoneware "Dragon Jars" in the Guthe Collection
This paper presents a multifaceted study of a collection of stoneware ceramic vessels in the Guthe Collection of the Museum of Anthropology, University of Michigan. These vessels, recovered in the Philippines but manufactured in multiple production sites across East and Southeast Asia, provide insights into premodern economic interactions and maritime trade. Our study of this collection drew on multiple approaches to identify coherent groupings o…
Evaluation of Painted Pottery from the Mesa Verde Region Using Laser Ablation-Inductively Coupled Plasma-Mass Spectrometry (LA-ICP-MS)
For decades archaeologists have struggled with the problem of accurately determining organic and mineral-based paints in pottery from the American Southwest. Using Laser Ablation-Inductively Coupled Plasma-Mass Spectrometry (LA-ICP-MS), we have developed a simple and cost-effective method that permits classification of painted surfaces into mineral and organic-based categories. By applying this method to Mesa Verde and Mancos Black-on-white potte…
Potters and pigments
Lead Isotope Data From the Isotrace Laboratory, Oxford
Evaluation of Painted Pottery from the Mesa Verde Region Using Laser Ablation-Inductively Coupled Plasma-Mass Spectrometry (LA-ICP-MS)
For decades archaeologists have struggled with the problem of accurately determining organic and mineral-based paints in pottery from the American Southwest. Using Laser Ablation-Inductively Coupled Plasma-Mass Spectrometry (LA-ICP-MS), we have developed a simple and cost-effective method that permits classification of painted surfaces into mineral and organic-based categories. By applying this method to Mesa Verde and Mancos Black-on-white potte…
Instrumental Neutron Activation Analysis of Pottery from the George C. Davis (41Ce19) Site, Texas
The George C. Davis Site (41CE19) in central East Texas holds a prominent position in American archaeology. Fifty prehistoric ceramic specimens from early Caddoan contexts (A.D. 800–1200) were analyzed by instrumental neutron activation analysis (INAA) at the Missouri University of Missouri Research Reactor Center (MURR). The chemical compositions of the Davis ceramics were compared with previously identified Caddoan ceramic compositional groups.…
Chemical and Mineralogical Characterization of Sasanian and Early Islamic Glazed Ceramics From the Deh Luran Plain, Southwestern Iran
One hundred and seventy‐five glazed ceramics from Sasanian and Early Islamic period sites located on the Deh Luran Plain in southwestern Iran were examined by instrumental neutron activation analysis for characterizing differences in ceramic pastes and by laser‐ablation inductively coupled plasma mass‐spectrometry for identifying the constituents of the ceramic glazes. The results of the analysis reveal that alkaline‐based glazed ceramics have pa…
Elymian regional interaction in Iron Age western Sicily
Testing technological practices
An Initial Assessment of Prehistoric Ceramic Production and Exchange in Northern Yoruba, North Central Nigeria
The Effects of Erosion on Archaeological Sites along the Upper Oahe Reservoir, South Dakota
Shoreline erosion of archaeological sites along Lake Oahe, North and South Dakota since the late 1960s has resulted in substantial destruction to many significant and potentially National Register eligible archaeological sites. Using aerial photographs dating to the late-1930s, site maps, and recent aerial photographs, we document the effects of erosion at three major village sites located in the Northern Cannonball region of South Dakota. As a r…
Characterizing the Stoneware "Dragon Jars" in the Guthe Collection
This paper presents a multifaceted study of a collection of stoneware ceramic vessels in the Guthe Collection of the Museum of Anthropology, University of Michigan. These vessels, recovered in the Philippines but manufactured in multiple production sites across East and Southeast Asia, provide insights into premodern economic interactions and maritime trade. Our study of this collection drew on multiple approaches to identify coherent groupings o…
Archaeological Chemistry
Archaeologists often turn to physical science for help in determining ages of sites and/or materials. Electron spin resonance (ESR) has proven a valuable tool for dating eutherian teeth from archaeological, paleoanthropological, and paleontological sites ranging in age from 10 ka to 5 Ma. Because tooth enamel is the body's hardest tissue, teeth are frequent components of fossil assemblages. The ESR signal stability in enamel exceeds 100 Ma. In eu…
Pottery in the Mormon Economy
Comparison of XRF and PXRF for analysis of archaeological obsidian from southern Perú
Chemical characterization of majolica from 14th–18th century production centers on the Iberian Peninsula
Source Analysis of Central Plains Tradition Pottery Using Neutron Activation Analysis
We report the results of a study applying instrumental neutron activation analysis (NAA) to pottery from eight sites assigned to the western part of the Central Plains tradition (Upper Republican and Smoky Hill phases) and six components identified as High Plains Upper Republican. Our purpose is to test the feasibility of using NAA to trace interactions among people of the Central Plains tradition and between the Central Plains tradition people a…
Archaeometry at the University of Missouri Research Reactor and the Provenance of Obsidian Artefacts in North America
Descriptions of the history of the Archaeometry Laboratory at the University of Missouri Research Reactor and the procedures used for instrumental neutron activation analysis of archaeological materials are presented. The laboratory was established in 1988 to support students and faculty from the University of Missouri and other universities who were interested in archaeological research involving compositional analysis. The results obtained from…
Acknowledging Fifty Years of Neutron Activation Analysis in Archaeology
Neutron activation analysis has been an important analytical technique for chemical characterization studies of archaeological materials since 1957, and remains one of the best analytical approaches for bulk chemical characterization of archaeological ceramics and other materials. This paper introduces a series of reports that document the history of NAA applied to archaeological materials
A New Dating Method for High‐calcium Archaeological Glasses Based Upon Surface‐water Diffusion
The first European settlers came to North America in the early 17th century using glass in the form of containers and decorative objects. Thus, glass is a horizon marker for all historic period settlements and a potential source of chronometric dates at archaeological sites belonging to the historic period in the Americas. We have developed a new absolute dating method based upon water diffusion into the surface of manufactured glasses that predi…
Inter-Regional and Intra-Regional Scale Compositional Variability in Pottery from South-Central Veracruz, Mexico
Both long-distance and localized chemical relationships in pottery and their implications for studies of Gulf lowland exchange can be examined with instrumental neutron activation. New pottery samples from Classic period (A.D. 300-900) contexts in the western lower Papaloapan basin were subjected to chemical compositional analysis. The sample represents three groups, coarse utility jars, common orange slipped serving bowls, and fine paste, higher…
Sourcing the Palygorskite Used in Maya Blue
Maya Blue is an unusual blue pigment consisting of a clay-organic complex of indigo and the unusual clay mineral palygorskite (also called attapulgite). Used on pottery, sculpture, and murals from the Preclassic to Late Colonial periods largely in Mesoamerica, blue was the color of sacrifice and ritual. Did the palygorskite used to make Maya Blue come from a restricted source in Yucatán like Shepard, Arnold, Arnold and Bohor believed, or from wid…
Multiple Dendrochronological Signals Indicate the Eruption of ParíCutin Volcano, Michoacán, Mexico
The eruption of Parícutin (1943–1952), a cinder cone volcano in Michoacán, Mexico, caused dendrochronological and dendrochemical responses that might be useful as general dating tools for eruptions. For the eruption period, pines near Parícutin have slightly suppressed ring widths plus high inter-annual variability of width. Wood anatomy changes include traumatic resin ducts and thin bands of false latewood. Dendrochemistry of tree rings shows li…
Ceramic production, consumption and exchange in the Banda area, Ghana
Exchange patterns, boundary formation, and sociopolitical change in Late Bronze Age Southern Caucasia
Obsidian use at the Ushki Lake complex, Kamchatka Peninsula (Northeastern Siberia)
Reading Moabite Pigments with Laser Ablation ICP-MS
Ancient social landscapes of northwestern Argentina
Archaeology (42 obras) · Geography (38 obras) · Archaeology and ancient environmental studies (37 obras) · Geology (28 obras) · Cultural Heritage Materials Analysis (19 obras) · History (15 obras) · Chemistry (13 obras) · Pottery (13 obras) · Materials Science (10 obras) · Mineralogy (10 obras)