Results 51 to 60 of about 64,269 (303)

Holocene variations in the Scottish marine radiocarbon reservoir effect [PDF]

, 2004
We assessed the evidence for variations in the marine radiocarbon reservoir effect (MRE) at coastal, archaeological Iron Age sites in north and west Scotland by comparing AMS measurements of paired marine and terrestrial materials (4 pairs per context ...
Higney, Elaine, Scott, E. Marian, Ascough, Philippa L., Barber, John, Dugmore, Andrew J., Cook, Gordon T.   +5 more
core   +1 more source

Geochronological reconstruction of the Lateglacial deglaciation in the Arve Valley (Northern French Alps)

Journal of Quaternary Science, EarlyView.
ABSTRACT The timing and spatial patterns of glaciers retreat in the Northern French Alps during the Lateglacial (19.0–11.7 ka) remain debated, reflecting discrepancies among available chronological data sets. The complex interactions between major glaciers, such as the Rhône and Arve glaciers to the north and the Isère glacier to the south, represent a
Quentin Portal, Christian Crouzet, Jean‐François Buoncristiani, Julien Carcaillet   +3 more
wiley   +1 more source

Radiocarbon Analysis of Methane at the NERC Radiocarbon Facility (East Kilbride) [PDF]

Radiocarbon, 2019
ABSTRACTMethane is the second most important anthropogenically produced greenhouse gas, and radiocarbon (14C) analysis is extremely valuable in identifying its age and source in the environment. At the NERC Radiocarbon Facility (East Kilbride, UK) we have developed expertise in analysis of methane 14C concentration and methodological approaches to ...
Garnett, M.H., Murray, C., Gulliver, P., Ascough, P.L.   +3 more
openaire   +1 more source

Decoupling glacier retreat and surface stabilization on the Snežnik Plateau (Slovenia), insights from in situ cosmogenic 36Cl exposure and depth‐profile ages

Journal of Quaternary Science, EarlyView.
ABSTRACT Glaciokarst landscapes pose distinctive challenges for cosmogenic dating because meltwater and runoff can be rapidly rerouted into ponors and conduit networks, weakening glacier–river coupling and promoting local sediment storage. We reconstruct glacier retreat and postglacial stabilization on the Snežnik Plateau (SW Slovenia) using in situ ...
Onur Altınay, Mehmet Akif Sarıkaya, Uroš Stepišnik, Manja Žebre, Cengiz Yıldırım, Attila Çiner, Klaus M. Wilcken   +6 more
wiley   +1 more source

Isotope analyses reveal chronological and bioarchaeological consistency at a tribal community of the Sântana de Mureș-Chernyakhov culture in Transylvania

Scientific Reports
By the 4th century CE, the territory of post-Roman Dacia constituted the western frontier of the Sântana de Mureș-Chernyakhov culture’s expansion. In this study, we analysed 26 individuals of the culture’s eponymous cemetery in the Carpathians at Sântana
István Major, Anikó Horváth, István Futó, Szilárd Sándor Gál, Anna Szigeti, Mihály Molnár, Zsolt Körösfői   +6 more
doaj   +1 more source

Holocene vegetation dynamics of Grande Terre (Kerguelen Islands) inferred from sedimentary ancient DNA

Journal of Quaternary Science, EarlyView.
ABSTRACT While the Antarctic region has experienced significant climatic changes over the Holocene, few high‐resolution records have examined their effects on the local biota. In order to understand past ecological shifts and forecast future changes, it is important to obtain high‐resolution palaeoecological records from this region.
Xaali O'Reilly‐Berkeley, Aloïs Revéret, Youri Lammers, Maaike Zwier, Anne E. Bjune, Fabien Arnaud, Jostein Bakke, Sandra Nogué, Inger G. Alsos   +8 more
wiley   +1 more source

Unearthing Forest History: Integrating Soil Charcoal Macrofossils and Pollen Reveals Delayed Forest Responses to Holocene Climatic Transitions in Boreal-Temperate Ecotone. [PDF]

Ecol Evol
This study reconstructs long‐term vegetation dynamics at the boreal–temperate forest ecotone in eastern Canada using soil charcoal, pollen records, and forest inventories. Results reveal a delayed expansion of thermophilous tree species and a late borealization of the landscape in relation to climate change, alongside recent stand‐scale shifts driven ...
Rioux-Couture C, Grondin P, de Lafontaine G.   +2 more
europepmc   +2 more sources

Groningen Radiocarbon Dates IV [PDF]

Radiocarbon, 1963
An attempt has been made to assemble the large number of C14 dates measured in Groningen since the last date list was published in 1958. We have not succeeded in preparing all the measurements done in this time; the present list contains a more or less random selection. It is hoped the rest will be included in next year's list.
J. C. Vogel, H. T. Waterbolk
openaire   +3 more sources

Stockholm natural radiocarbon measurements, II.

, 1959
This paper is a list of the radiocarbon datings of geologic and archaeologic samples made during 1958 after the dating apparatus had been installed at the Geological Survey.
Oestlund, Goete
core   +1 more source

Insect communities of late Pleistocene steppe–tundra and Holocene boreal forest ecosystems in central Yukon Territory, Canada

Journal of Quaternary Science, EarlyView.
ABSTRACT Subfossil insect communities from the Quartz Creek site provide a detailed record of both Late Pleistocene steppe–tundra and Holocene boreal forest ecosystems in central Yukon Territory, Canada. Fifteen Pleistocene assemblages (marine isotope stages [MIS] 4 to 2) are dominated by steppe–tundra and dry‐tundra taxa, particularly the weevils ...
Scott L. Cocker, Svetlana Kuzmina, Nick Schafstall, Michael A. Monzon, Duane G. Froese   +4 more
wiley   +1 more source