Results 91 to 100 of about 32,995 (291)

Petroarchaeometric Data on Antiparos Obsidian (Greece) for Provenance Study by SEM-EDS and XRF

open access: yesOpen Archaeology, 2019
The island of Antiparos belongs to the Aegean volcanic arc. The obsidian outcrops here contain pieces of excellent tool-making quality, but of small size making the raw material less attractive.
P. Acquafredda   +4 more
semanticscholar   +1 more source

Savanyú vulkáni üvegek ásványtan-geokémiai vizsgálata, petrológiai és vulkanológiai kiértékelése = Mineralogical and geochemical study of acid volcanic glasses, and its interpretation from petrological and volcanological point of view [PDF]

open access: yes, 2009
Változatos lemeztektonikai környezetben képződött obszidián minták fő- és nyomelemtartalmának összehasonlító vizsgálata során megállapítottuk, hogy az eredetileg gránitokra kidolgozott diszkriminációs diagramok alkalmazhatók a savanyú kiömlési kőzetek ...
Balázs, Éva   +4 more
core  

Sublimation Temperature of Circumstellar Dust Particles and Its Importance for Dust Ring Formation [PDF]

open access: yes, 2011
Dust particles in orbit around a star drift toward the central star by the Poynting-Robertson effect and pile up by sublimation. We analytically derive the pile-up magnitude, adopting a simple model for optical cross sections.
Kimura, Hiroshi   +4 more
core   +2 more sources

Importation of Obsidian at Cerro Palenque, Honduras: Results of an Analysis by EDXRF

open access: yes, 2004
The results of source analysis by EDXRF of obsidian artifacts from the Mesoamerican site of Cerro Palenque in Honduras are reported and changes over time discussed. Sources of obsidian include Ixtepeque, El Chayal, Jalapa, San Martin Jilotepeque, and San
Hendon, Julia A.
core  

Research Reports from the Programme for Belize Archaeological Project, Volume Six [PDF]

open access: yes, 2014
Table of Contents : Background and Introduction to the 2011 Season of the Programme for Belize Archaeological Project / by Fred Valdez, Jr. and Marisol Cortes-Rincon (p.1-4) -- Investigations at Structure 3, La Milpa: The 2011 Field Season / by Debora ...
Cortes-Rincon, Marisol   +2 more
core   +1 more source

Origin of Silicic Magmatism at the Katla Volcanic Complex, South Iceland

open access: yesGeochemistry, Geophysics, Geosystems, Volume 26, Issue 6, June 2025.
Abstract The Katla volcano is a bimodal caldera complex within Iceland's basalt‐dominated Eastern Volcanic Zone. To unravel the petrogenesis of silica‐rich rocks from Katla, we provide new δ18O values for almost 60 basaltic, intermediate, and high‐silica eruptive rocks, including a number of partially melted felsic xenoliths.
Valentin R. Troll   +11 more
wiley   +1 more source

ALTICA, COAPEXCO, AND THE ROLE OF MIDDLEMEN IN FORMATIVE OBSIDIAN EXCHANGE

open access: yesAncient Mesoamerica, 2019
Altica's location in the Patlachique Range, 10 km away from the Otumba obsidian source, suggests its potential role in the distribution of Otumba obsidian.
N. Johnson, K. Hirth
semanticscholar   +1 more source

First technological and provenance analysis on obsidian artifacts from Tafí Valley (Tucumán Province, Argentine Republic)

open access: yesJournal of Lithic Studies, 2018
The aim of this paper is to report the first analyses carried out on obsidian artifacts recovered from two archaeological sites of the Tafí valley (Tucumán, Argentina), dating to the first and second millennium C.E.
Juan Manuel Montegú   +2 more
doaj   +1 more source

Research Reports from the Programme for Belize Archaeological Project, Volume Three [PDF]

open access: yes, 2009
Table of Contents : Archaeological Investigations of the Programme for Belize Archaeological Project: An Introduction to Volume Three / by Fred Valdez, Jr. and Rissa M.
Trachman, Rissa M., Valdez, Fred Jr
core   +1 more source

The potential of obsidian "big data"

open access: yesUISPP Journal, 2019
Studies of obsidian provenance have been a core component of the archaeological sciences from the mid-1960s onward. With the growing application of portable X-ray Fluorescence Spectrometers (PXRF) in obsidian research, the number of such studies, and the
Mark Golitko
doaj   +1 more source

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