Results 171 to 180 of about 946 (211)

Obsidian Sources in Guatemala: A Regional Approach

American Antiquity, 1978
Geologic sources of obsidian are frequently treated in the archaeological literature as single, discrete flows, each being recognized as a different source as long as it can be geographically isolated. However, some recent studies show a tendency toward the correction of this misconception, and toward defining operationally the obsidian source concept ...
Luis Hurtado de Mendoza, William A. Jester   +1 more
openaire   +1 more source

The prehistoric sources of Palliser Bay obsidian

Journal of Archaeological Science, 1978
Abstract A sample of 210 pieces of archaeologically derived obsidian from settlement sites in Palliser Bay, New Zealand, was subjected to X-ray fluorescent analysis, in order to define the petrographic sources exploited by these prehistoric groups. It was found that the material had been derived from sources at Mayor Island, Huruiki, Rotorua, Cooks ...
B.F. Leach, A.J. Anderson
openaire   +1 more source

The Paredón, Mexico, Obsidian Source and Early Formative Exchange

Science, 1978
In 1975, archeological surface surveys of trade routes located again a pre-Hispanic obsidian source in central Mexico first reported in 1902. Initial trace element studies of the Paredón source through an analysis by neutron activation have been compared with similar studies of the obsidian found at Chalcatzingo 150 kilometers from the source.
T H, Charlton, D C, Grove, P K, Hopke
openaire   +2 more sources

A Systematic Approach to Obsidian Source Characterization

1998
A systematic approach to sample collection, chemical analysis, and statistical evaluation of obsidian sources is recommended before significant numbers of artifacts should be analyzed. Multivariate statistical methods based on Mahalanobis D 2 enable robust rejection of erroneous source assignments and lead to sourcing of artifacts with a very high ...
Michael D. Glascock, Geoffrey E. Braswell, Robert H. Cobean   +2 more
openaire   +1 more source

MAYAN OBSIDIAN: SOURCE CORRELATION FOR SOUTHERN BELIZE ARTIFACTS

Archaeometry, 1978
High‐precision neutron activation measurements have been made on mesoamerican obsidian from Ixtepeque and El Chayal which are thought to be the major sources of volcanic glass artifacts in pre‐Columbian times. These results are compared with measurements on obsidian artifacts from Lubaantun, Wild Cane Cay, Frenchman's Cay and Moho Cay.
F. H. STROSS, H. R. BOWMAN, H. V. MICHEL, F. ASARO, N. HAMMOND   +4 more
openaire   +1 more source

Obsidian in Southern Ecuador: The Carboncillo Source

Latin American Antiquity, 2011
AbstractThe Carboncillo area in the southern highlands of Ecuador is identified as the only confirmed source of archaeological obsidian located in the country outside of the northern highlands and is the first identified in the large gap between the known Ecuadorian and Peruvian sources.
openaire   +1 more source

The obsidian sources of Northland, New Zealand

Journal of the Royal Society of New Zealand, 2012
Abstract Four sources of obsidian have previously been recognized in Northland, but more recent field observations and new chemical analyses indicate there are three (Pungaere, Otoroa and Huruiki). Obsidian from these sources can be readily distinguished on the basis of visual characteristics and chemical attributes.
openaire   +1 more source

NON‐DESTRUCTIVE SOURCING OF BRONZE AGE NEAR EASTERN OBSIDIAN ARTEFACTS: REDEVELOPING AND REASSESSING ELECTRON MICROPROBE ANALYSIS FOR OBSIDIAN SOURCING*

Archaeometry, 2012
Despite predictions in the 1980s that electron microprobe analysis (EMPA) would become a popular technique for obsidian sourcing, few studies have used it with this goal, and most of them are now outdated and unrepresentative of modern EMPA. For example, Merrick and Brown (1984) recorded their data on punch cards.
openaire   +1 more source

Obsidian Sourcing by X-Ray Fluorescence Analysis

Obsidian sourcing is the process by which obsidian artifacts are matched to the geological sources (e.g., a specific volcano or lava flow) from which the obsidian originated on the basis of elemental composition, sometimes termed trace-element fingerprinting.
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Obsidian Sources:

2022
openaire   +1 more source