Results 81 to 90 of about 26,858 (250)
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
Journal of Metamorphic Geology, Volume 43, Issue 5, Page 467-495, June 2025.ABSTRACT The pressure–temperature–time (P–T–t) evolution of a metapelitic ultrahigh‐temperature (UHT) granulite from Rundvågshetta (Lützow–Holm Complex, East Antarctica) and chemical evolution of partial melt during the prograde metamorphism up to UHT metamorphism are studied in detail.
Kota Suzuki +6 more
wiley +1 more source
Importation of Obsidian at Cerro Palenque, Honduras: Results of an Analysis by EDXRF
, 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
Fault textures in volcanic conduits: evidence for seismic trigger mechanisms during silicic eruptions. [PDF]
, 2005 It is proposed that fault textures in two dissected rhyolitic conduits in Iceland preserve evidence for shallow seismogenic faulting within rising magma during the emplacement of highly viscous lava flows. Detailed field and petrographic analysis of such
Dingwell, DB, Tuffen, H
core
Geophysical Research Letters, Volume 52, Issue 10, 28 May 2025.Abstract (Titano)magnetite is the major magnetic carrier in igneous rocks, whether it can decode the influence of subduction fluids and fractional crystallization characteristics in back‐arc basins is unclear. Here, we performed petrographic and magnetic analyses on volcanic samples from the Okinawa Trough, with titanomagnetite as the dominant magnetic
Jie Xu +11 more
wiley +1 more source
Open Archaeology, 2020 In the last twenty years, obsidian artefacts have been found in important and often extensive karst cavities in Southern Italy: three located in Calabria (Grotta della Monaca, and Grotta del Tesauro, in Sant’Agata di Esaro, Cosenza; Grotta Pietra Sant ...
Acquafredda Pasquale +4 more
doaj +1 more source
Geoarchaeology, Volume 40, Issue 3, May/June 2025.ABSTRACT Recent archaeological investigations in the Kohgiluyeh region of southwestern Iran revealed numerous Neolithic sites along with diverse settlement strategies adapted to the local resources and environmental conditions of this high mountainous stretch of the Zagros Mountains.
Daniele Moscone +4 more
wiley +1 more source
Character of the opposition effect and negative polarization [PDF]
Photometric and polarimetric properties at small phase angles were measured for silicates with controlled surface properties in order to distinguish properties that are associated with surface reflection from those that are associated with multiple ...
Pieters, Carle M. +2 more
core +1 more source
Tracing the source of obsidian from prehistoric sites in Bulgaria
Българско е-Списание за Археология, 2017 Portable X-ray fluorescence (pXRF) spectrometry was used to obtain source determinations for 11 obsidian artefacts from five archaeological sites in Bulgaria. The results show that all the archaeological specimens can be linked to obsidian sources in the
Clive Bonsall +7 more
doaj
Journal of Geophysical Research: Solid Earth, Volume 130, Issue 5, May 2025.Abstract The interplay between lithospheric strength contrast and tectonic compression by relative plate motion drives buckling instability. Analysis of lithospheric buckling with plate tectonic history is essential for inferring lithospheric strength.
Seok‐Hyeon Do +2 more
wiley +1 more source