Results 41 to 50 of about 5,099 (211)

Sourcing obsidian from prehistoric sites in northwest Romania

Materiale și Cercetări Arheologice, 2018
Portable X‐ ray Fluorescence Spectroscopy (pXRF) was used to reveal the chemical signatures of 75 obsidian artefacts from seven sites in the Satu Mare region, ranging in age from Early Neolithic (late Starčevo‐ Criș culture) to Late Copper Age.
Boroneanț, A., Virag, C., Astaloș, C., Bonsall, C.   +3 more
doaj   +1 more source

Geological Sources of Obsidian on Lipari and Artifact Production and Distribution in the Neolithic and Bronze Age Central Mediterranean

Open Archaeology, 2019
The Aeolian island of Lipari, just north of eastern Sicily, was a major geological source of high quality obsidian that was volcanically formed in the Late Mesolithic, followed by another major production in the 1st millennium AD. A much earlier volcanic
Tykot Robert H.
doaj   +1 more source

Preparation of Hierarchically Structured Perlite NPs/Metformin–Co (II) System to Catalyze the Green Synthesis of Pyrazolopyranopyrimidines

ChemistryOpen, Volume 14, Issue 12, December 2025.
This study presents an innovative heterogeneous nanocatalytic system based on perlite nanoparticles (Perlite NPs/Met‐Co(II)). Comprehensive characterization using FTIR, XRD, field‐emission scanning electron microscopy, EDX, elemental mapping, TGA, and BET analyses confirms the hierarchically structure of nanocatalyst.
Jalal Reihani Shurbakhlu, Leila Moradi, Abdulhamid Dehghani   +2 more
wiley   +1 more source

Palagonitization of Volcanic Rocks in Polar Climates: The Case of Deception Island (Antarctica)

Geochemistry, Geophysics, Geosystems, Volume 26, Issue 12, December 2025.
Abstract A detailed study of palagonitization in rocks from Deception Island—one of Antarctica's most active volcanoes—has been performed to advance our understanding of this alteration process. A detailed petrographic (optical and SEM), mineralogical (XRD), and mineral and glass spot geochemistry (EDS and EMP) characterization has been conducted on ...
Oriol Vilanova‐Pagès, Guillem Gisbert, Helena Albert, Adelina Geyer, Meritxell Aulinas, Raquel Arasanz, Jordi Ibañez‐Insa, Antonio Polo‐Sánchez, Antonio Álvarez‐Valero, Olga Prieto‐Ballesteros, Santiago Giralt   +10 more
wiley   +1 more source

Experimental Development of Transport Percussion Marks on Obsidian Clasts, Pilauco Site, Chilean Northwestern Patagonia [PDF]

, 2022
Catalina Madrigal, Haroldo L. Lledo Vasquez, Daniel Fritte, Mario Pino   +3 more
openalex   +1 more source

Major‐Minor‐Trace Element Analyses and Oceanographic Modeling Confirms Circumpolar Transport of the 1962 Protector Shoal Pumice Raft

Journal of Geophysical Research: Oceans, Volume 130, Issue 12, December 2025.
Abstract Pumice rafts derived from submarine eruptions can remain afloat for months or even years, traveling thousands of kilometers on ocean currents. These natural phenomena disperse marine organisms and provide important evidence for submarine volcanism yet are not fully understood.
Alistair J. Monteath, Emma F. Young, Hannah R. S. Dawson, Britta J. L. Jensen, John L. Smellie, Christina J. Manning, Teal R. Riley, Tom A. Jordan, Stephen J. Roberts   +8 more
wiley   +1 more source

Elemental Composition and Statistical Analysis of Obsidians from Tole Khari in Pasargad Complex Using Micro-PIXE Technique [PDF]

, 2021
Davoud Agha‐Aligol, Fatemeh Farshi Jalali, Alireza Sardari, Mahmoud Moradi   +3 more
openalex   +1 more source

Comment on: 'Stonehenge revisited: A geochemical approach to interpreting the geographical source of sarsen stone #58'

Archaeometry, Volume 67, Issue 6, Page 1423-1436, December 2025.
Abstract In a recent paper in this journal (Hancock et al. (2024) Stonehenge revisited: A geochemical approach to interpreting the geographical source of sarsen stone #58. Archaeometry https://www.doi.org/10.1111/arcm.12999), Hancock and colleagues present a reanalysis of the geochemical dataset used to identify the likely source for the majority of ...
David J. Nash, T. Jake R. Ciborowski
wiley   +1 more source

The potential of obsidian "big data"

UISPP 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

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

Journal 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, Valeria Leticia Franco Salvi, Julián Salazar   +2 more
doaj   +1 more source