Results 51 to 60 of about 7,194,103 (209)
Journal of Quaternary Science, Volume 41, Issue 6, Page 972-986, August 2026.ABSTRACT The Aso‐3 tephra is one of the most significant widespread marker layers from the Middle to Late Pleistocene, generated by a large caldera‐forming eruption at the Aso volcano in Kyushu, southwestern Japan. Despite its importance, a distal co‐ignimbrite ash correlative has yet to be clearly identified, primarily because although volcanic glass ...
Toshinori Sasaki +6 more
wiley +1 more source
Obsidian Sourcing Analysis from Chiquiuitan, Guatemala [PDF]
, 2018 The intent of this thesis is to analyze obsidian artifacts from Chiquiuitan, Guatemala to see if the samples can be traced to known obsidian sources in the Maya region based on their unique chemical elements.
Fertig, Sutherland X
core
Archaeometry, Volume 68, Issue 4, Page 674-686, August 2026.ABSTRACT Investigating why hominins adopted particular flake technologies during the Mid‐to‐Late Pleistocene is essential to understanding patterns of lithic innovation. This period witnessed the emergence of Levallois technologies (~350–250 ka) and later blades, each “replacing” earlier forms.
Anna Mika, Alastair Key
wiley +1 more source
, 2021 The authors present the results of new chemical characterizations of Early Neolithic obsidian artefacts yielded by the excavations carried out at Cave Pollera in 1971-1973. We analysed four artefacts from the Impresso-Cardial layer III, level XXII.
Chiara PANELLI +5 more
core
Data for: OBSIDIAN SOURCING AND THE DYNAMIC ECONOMY OF IZAPA, CHIAPAS, MEXICO: 100 BC-AD 400
, 2018 Obsidian Sourcing Data from the Izapa Household Archaeology Project, recovered from the archaeological site of Izapa in Chiapas ...
Mendelsohn, R (via Mendeley Data)
core +1 more source
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 +7 more
wiley +1 more source
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 +7 more
wiley +1 more source
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 +19 more
wiley +1 more source
A Question of Identity: Young Māori Connections to Marae—Do They Matter?
Kōtuitui: New Zealand Journal of Social Sciences Online, Volume 21, Issue 2, June 2026.Cultural connection, identity and belonging are increasingly shaped by urbanisation, mobility and the conditions of digitally integrated and often mediated life. Maintaining place‐based Indigenous relationships and responsibilities is important especially given the social, cultural or geographic distance between Indigenous people and their ancestral ...
Merata Kawharu +3 more
wiley +1 more source
Archaeometry, Volume 68, Issue S3, Page S8-S30, June 2026.Abstract The use of stone hammers to produce sharp stone flakes—knapping—is thought to represent a significant stage in hominin technological evolution because it facilitated the exploitation of novel resources, including meat obtained from medium‐to‐large‐sized vertebrates. The invention of knapping may have occurred via an additive (i.e., cumulative)
Metin I. Eren +23 more
wiley +1 more source