Results 41 to 50 of about 946 (211)

Geoarchaeological Perspectives on Stelae Production Throughout the Bronze Age: Provenance, Material Properties and Rock Selection at Zebros (Idanha‐a‐Nova, Portugal)

Geoarchaeology, Volume 40, Issue 6, November/December 2025.
ABSTRACT At Monte dos Zebros (Idanha‐a‐Nova, Central Portugal), the discovery of three stelae—two Iberian Late Bronze Age stelae and one fragment of an Early/Middle Bronze Age anthropomorphic stela—represents a rare case of rock art monuments from different chronologies coexisting in the same place within a broader archaeological landscape, which ...
Rafael Ferreiro Mählmann, Ralph Araque Gonzalez, Dirk Scheuvens, Pedro Baptista, Francisco Henriques   +4 more
wiley   +1 more source

Numerically Efficient Model for the Nucleation, Growth, and Coalescence of Bubbles in Magma

Journal of Geophysical Research: Solid Earth, Volume 130, Issue 11, November 2025.
Abstract We present a numerical model to describe the nucleation, growth, and coalescence of bubbles in a decompressed magma. The new model enables us to calculate the bubble size distribution (BSD) at a low computational cost by taking the bubble mass as a variable.
Masatoshi Ohashi
wiley   +1 more source

Anaerobic Limonene Metabolism in a Methanogenic Enrichment Involves a Glycine Radical Enzyme

Environmental Microbiology, Volume 27, Issue 11, November 2025.
A methanogenic enrichment culture on the natural monoterpene limonene is characterised by a novel glycine radical enzyme for anaerobic hydrocarbon activation, the presence of a microbial loop for necromass utilisation and the presence of a predator of Bacteria and Archaea. ABSTRACT Limonene is a natural monoterpene omnipresent in human environments. It
Almud Lonsing, Gerrit Alexander Martens, Anastasia Resteu, Jana Kizina, Isabella Wilkie, Alexandra Bahr, Jens Harder   +6 more
wiley   +1 more source

Raw Material Economisation in Aotearoa New Zealand: Evidence for Manufacture and Recycling of Adzes on Ahuahu Great Mercury Island

Archaeology in Oceania, Volume 60, Issue 3, Page 220-233, October 2025.
ABSTRACT Raw materials are used to characterise the early settlement of Aotearoa Te Wai Pounamu New Zealand by Māori. Current models suggest change in raw material use over time occurred in response to changing social organisation and reduced resource availability. However, few studies have examined spatial variation in raw material use.
Rebecca Phillipps, Joshua Emmitt, Stacey Middleton, Simon Holdaway   +3 more
wiley   +1 more source

Obsidianas enLa Payunia (sur de Mendoza, Argentina): patrones de distribución e implicancias en la ocupación regional Obsidian inLa Payunia (south Mendoza, Argentina): spatial pattern and its implications in the regional alchaeological record

Magallania, 2012
En este trabajo se presentan los resultados obtenidos del análisis tecnológico de artefactos de obsidiana procedentes del campo volcánico deLa Payunia (sur de Mendoza, Argentina).
LAURA SALGÁN, ADOLFO GIL, GUSTAVO NEME
doaj  

The Manufacture of Rochia nilotica rings: The chaîne opératoire Identified for Lapita Sites in Vanuatu

Archaeology in Oceania, Volume 60, Issue 3, Page 201-219, October 2025.
ABSTRACT Rings made on marine shell are a conspicuous artefact form found throughout cultural sequences for much of the Pacific over millennia. Despite their importance in both recent and ancient times, in‐depth consideration of the manufacturing processes involved in shell ring production are limited.
Michelle C. Langley, Iarawai Phillip, Stuart Bedford   +2 more
wiley   +1 more source

Identification of Obsidian Sources on Milos, Greece

Bulletin of the Geological Society of Greece, 2018
Obsidian, a natural volcanic glass, was used extensively in ancient times because of its quality as a raw material for sharp blades. As such, obsidian is of high interest for provenancing studies, since reliable provenancing can provide information about trade routes, extension of territory, long-distance contacts and the mobility of prehistoric ...
Johannes H Sterba, Fabienne Eder, Max Bichler   +2 more
openaire   +3 more sources

Sourcing obsidian from early prehistoric sites on the Arad plain, Western Romania

Materiale și Cercetări Arheologice
Portable X‑ray Fluorescence Spectroscopy (pXRF) was used to obtain source determinations for 109 obsidian artefacts from seven sites on the Arad Plain in western Romania, belonging to the Neolithic and Eneolithic periods.
Boroneanț, A., Sava, V., Bonsall, C.
doaj   +1 more source

Magnetite grain-size analysis and sourcing of Mediterranean obsidians

Journal of Archaeological Science, 2012
Abstract The potential of magnetic grain-size variations as an obsidian source characteristic is investigated using geological and archaeological obsidians from five islands of the Mediterranean Sea: Lipari, Sardinia, Palmarola, Pantelleria, Melos. Four parameters are used: magnetic (χ) and anhysteretic (χa) susceptibilities, saturation isothermal ...
ZANELLA E, FERRARA, ENZO, BAGNASCO L, OLLA' A, LANZA R, BEATRICE, CINZIA   +5 more
openaire   +2 more sources

Identifying the origins of obsidian artifacts in the Deh Luran Plain (Southwestern Iran) highlights community connections in the Neolithic Zagros. [PDF]

Proc Natl Acad Sci U S A, 2022
Frahm E, Carolus CM.
europepmc   +1 more source