Results 51 to 60 of about 2,457 (191)

Formation and Alteration of Olivine‐Carbonate Rocks Within Jezero Crater as Constrained by In Situ Visible/Near‐Infrared Multispectral Images

open access: yesJournal of Geophysical Research: Planets, Volume 131, Issue 1, January 2026.
Abstract Olivine‐ and carbonate‐bearing rocks are key exploration targets on Mars because of the information they can provide about magma evolution and source characteristics, implications for surface water availability and climate, and their biosignature preservation potential.
E. Ravanis   +16 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

open access: yesMagallania, 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  

Identification of Obsidian Sources on Milos, Greece

open access: yesBulletin 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   +2 more
openaire   +3 more sources

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

open access: yesMateriale 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

Radioanalytical multi-elemental analysis : new methodology and archaeometric applications [PDF]

open access: yes
Title from PDF of title page (University of Missouri--Columbia, viewed on October 21, 2010).The entire thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file; a non-technical public abstract appears in the ...
Coleman, Magen E., 1984-
core   +1 more source

Magnetite grain-size analysis and sourcing of Mediterranean obsidians

open access: yesJournal 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   +5 more
openaire   +2 more sources

Artifact geochemistry demonstrates long-distance voyaging in the Polynesian Outliers. [PDF]

open access: yesSci Adv, 2023
Hermann A   +9 more
europepmc   +1 more source

Dynamics of obsidian procurement at Pot Creek Pueblo (LA 260), Northern New Mexico. [PDF]

open access: yesArchaeol Anthropol Sci, 2022
Boulanger MT   +3 more
europepmc   +1 more source

Home - About - Disclaimer - Privacy