Results 61 to 70 of about 10,057 (205)

Marine Sediment Record of Eruption‐Fed Vertical Density Currents, Kermadec Arc (Rangitāhua)

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 7, July 2026.
Abstract Products of explosive volcanism can be transported into the oceans, where they form marine tephra layers. The processes responsible for their deposition are often complex, involving multiple transport mechanisms. During the RV Investigator voyage IN2022‐V02 (2022), a 35‐cm‐thick marine tephra unit was piston‐cored at 2,460 m water depth in the
Janne M. Scheffler, Martin Jutzeler, Steffen Kutterolf, Rebecca J. Carey, Josephin Wolf, Jacek Raddatz, Kuo‐Lung Wang, Hao‐Yang Lee   +7 more
wiley   +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, Maria Gurova, Nedko Elenski, Georgi Ivanov, Aneta Bakamska, Georgi Ganetsovski, Radka Zlateva-Uzunova, Vladimir Slavchev   +7 more
doaj  

Magnetic properties of geraisites, the first tektite strewn field identified in Brazil

Meteoritics &Planetary Science, Volume 61, Issue 7, Page 1163-1178, July 2026.
Abstract Geraisites are a newly recognized class of tektite from Brazil. They occur as centimeter‐sized, elongated to subspherical bodies scattered across surface gravel and shallow subsurface layers within a ~90‐km‐long strewn field extending between the municipalities of São João do Paraíso and Curral de Dentro, near the border between the states of ...
Melissa De Andrade Nunes, Ricardo I. F. Trindade, João Pedro Rodriguez Pinto, Alvaro P. Crósta, Gabriel G. Silva, Ludovic Ferrière, Camila R. Sales, Giovanna M. Tosi   +7 more
wiley   +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

Petroarcheometric Analysis on Obsidian Artefacts Found Within Some Neolithic – Eneolithic Period Caves of Southern Italy

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, Larocca Felice, Minelli Antonella, Pallara Mauro, Micheletti Francesca   +4 more
doaj   +1 more source

EHA Recommendations for preconceptual and antenatal screening and prenatal diagnosis for hemoglobinopathies

HemaSphere, Volume 10, Issue 6, June 2026.
Abstract Thalassemia and sickle cell disease (SCD) are among the most common monogenic disorders worldwide. They cause chronic hemolytic anemia, the consequences and prognosis of which vary considerably depending on the genetic characteristics of patients and the healthcare system in their country of residence.
Mariane de Montalembert, Maria D. Cappellini, Achille Iolascon, Lucia de Franceschi, Eda Ömur, Michele Abi Saad, Immacolata Andolfo, Celeste Bento, Maria Berghs, Doris Bonnet, Andreas Glenthoj, Beatrice Gulbis, Tuphan K. Dolai, Jorge Lima, Irene Motta, Roberta Russo, Ali Taher, Leon Tshilolo, Antonio Almeida, David Rees   +19 more
wiley   +1 more source

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

The Geological Mining Historical and Environmental Park of Sardinia and the Preservation of the Obsidian Heritage in the Sardinian Territory

Open Archaeology
The Geological, Mining, Historical and Environmental Park of Sardinia tells over 8000 years of exploitation of the island’s mineral resources, and history among the most lasting and fascinating planet.
Pignatelli Ciro, Rizzo Roberto, Sernagiotto Stefano   +2 more
doaj   +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

Obsidiana gris porfírica calco-alcalina del volcán Chaitén en sitios arqueológicos al sur del río Santa Cruz, Patagonoa meridional Porphyritic grey calc-alkaline obsidian from Chaitén volcano in archaeological sites south of the Santa Crus river, southermost Patagonia

Magallania, 2012
En el Parque Nacional Monte León y el Campo Volcánico Pali Aike se han recuperado un núcleo y dos lascas de obsidiana gris porfírica riolítica, la cual es químicamente diferente a los tipos más comunes de obsidianas (negra, gris verdosa veteada y verde ...
CHARLES R STERN, SOLEDAD CARACOTCHE, ISABEL CRUZ, JUDITH CHARLIN   +3 more
doaj