Results 131 to 140 of about 69,654 (263)

High-precision Radiocarbon Dating with Accelerator Mass Spectrometry and Calibration of Radiocarbon Ages

The Quaternary Research (Daiyonki-Kenkyu), 2007
High-resolution as well as high-precision age estimation is particularly important for Quaternary research to realize its main aim of better understanding of global environmental changes of the past and realistic prediction of the changes in the near future.
openaire   +2 more sources

Dealing With Inbuilt Age: A Bayesian Approach to Radiocarbon Dating of Rice, Bamboo and Charcoal From Non Ban Jak, Thailand

Archaeometry, EarlyView.
ABSTRACT New radiocarbon determinations from rice grains and bamboo have been obtained from Non Ban Jak, Northeast Thailand. These, along with charcoal, date a late Iron Age building sequence. The results come from short‐lived species and charcoal with potential inbuilt age. We built a series of Bayesian models to obtain a reliable chronology.
C. F. W. Higham, T. F. G. Higham
wiley   +1 more source

Response of Remote Tropical West Pacific Islands to Climate Variability: A Multiproxy Record From T‐Lake, Palau, Spanning the Early Holocene to Present

Archaeometry, EarlyView.
ABSTRACT Lake sediments are natural archives of past environmental dynamics and how these systems have responded to past climate variability. Sediment geochemistry, governed by local geology and climate processes, is unique to each lake‐catchment and geochemical proxies must be validated for each study site.
Jalene Nalbant, Larissa Schneider, Jessica L. Blois, Matthew Wolhowe, Julian P. Sachs, Simon G. Haberle, Geoffrey Clark   +6 more
wiley   +1 more source

Insights into Lake Baikal Radiocarbon Age Offsets from a Database of AMS Radiocarbon Age Estimates

Abstract. Radiocarbon dates are an essential tool for dating non-varved lake sediments, however their interpretation is hindered by issues such as reservoir age or contamination which culminate in age estimates that can be thousands of years younger or older than the true depositional age of that sediment (we call this an age offset).
Samuel R. S. Newall, Anson W. Mackay, Natalia Piotrowska, Maarten Blaauw   +3 more
openaire   +2 more sources

Application of Multi‐Method Dating for Understanding the Gravettian North of Moravia, Central Europe

Archaeometry, EarlyView.
ABSTRACT This article presents the results of integrating three methods to assess the age of the Upper Palaeolithic site of Pietraszyn 11 (SW Poland), close to the Moravian Gate. Sediment chronology determined using optically stimulated luminescence produced promising, yet ambiguous results (51.0 ± 3.7 to 20.3 ± 0.7 ka).
A. Wiśniewski, B. Bujalska, D. Popović, M. Baca, K. Zarzecka‐Szubińska, A. Lemanik, M. Hein, S. Talamo, P. Moska, H. Fewlass, D. Tokarz, Z. Jary, B. Przybylski, D. Bobak, M. Połtowicz‐Bobak, K. Wertz, A. Nadachowski   +16 more
wiley   +1 more source

Early Bronze Age Copper Circulation in the Guadalentín and Segura Valleys (SE Spain)

Archaeometry, EarlyView.
ABSTRACT Identifying the sources of copper used in Early Bronze Age metalwork from south‐east Spain is key to resolving a long‐running debate concerning centralized control, or lack thereof, over El Argar society's economic organisation. This study provides the first substantial integrated programme of EDXRF and MC‐ICP‐MS analyses for copper‐base ...
Dirk Brandherm, Ignacio Montero‐Ruiz
wiley   +1 more source

Tracing Identity in a Fragmented Past: Multi‐Proxy Analysis of Human Skeletal Remains From Dungowan Creek, New South Wales, Australia

Archaeometry, EarlyView.
ABSTRACT Human skeletal remains constitute critical archaeological evidence for reconstructing past societies, yet their investigation requires careful ethical, cultural, and legislative consideration. This paper reports on the discovery, recovery and analysis of a set of skeletal remains encountered during a cultural heritage management (CHM ...
Antonella Skepasianos, Cameron Neal, Sarah Croker, Anthony Dosseto, Michelle Fermor, Steve Talbott, Warren Mayers, Joel Mason, Florian Dux, Luke Kirkwood, Pamela Kottaras, Alan N. Williams   +11 more
wiley   +1 more source

Safety pharmacology of acute mescaline administration in healthy participants

British Journal of Clinical Pharmacology, EarlyView.
Aims Psychedelics, including mescaline, may serve as novel treatments for depression and anxiety. However, data is scarce on the safety of mescaline. Methods The present pooled analysis included two double‐blind, randomized, placebo‐controlled studies with a total of 48 participants and 96 mescaline administrations. Single oral‐dose administrations (n =
Aaron Klaiber, Mélusine Humbert‐Droz, Laura Ley, Yasmin Schmid, Matthias E. Liechti   +4 more
wiley   +1 more source

CHRONOLOGY OF THE LATE BRONZE AGE SITES OF THE STEPPE AND FOREST-STEPPE ALTAI

Вестник Кемеровского государственного университета, 2015
The paper deals with the chronology of the Late Bronze Age Altai. Both single and serial radiocarbon dates for the archaeological cultures of the reviewed the period are presented.
D. V. Papin
doaj  

Purification of hydroxyproline for small-scale radiocarbon dating verified using archaeological bone collagen

Progress in Earth and Planetary Science
We developed a novel technique for the accurate radiocarbon dating of single amino acids from archaeological human and animal remains. Despite the extensive use of bulk collagen for radiocarbon dating of archaeological bones, obtaining accurate dates can
Yu Itahashi, Yoshinori Takano, Yoshito Chikaraishi, Nanako O. Ogawa, Naoto F. Ishikawa, Naohiko Ohkouchi, Masako Yamane, Yusuke Yokoyama, Minoru Yoneda   +8 more
doaj   +1 more source