Results 191 to 200 of about 22,096 (292)

Elucidating the Reactivity and Fate of Dissolved Organic Matter in Groundwater Entering the Alaska Beaufort Sea Coast Using 14C Ramped Oxidation

Geophysical Research Letters, Volume 53, Issue 11, 16 June 2026.
Abstract Supra‐permafrost groundwater (SPGW) is a significant but understudied source of dissolved organic matter (DOM) to Arctic coastal systems. We applied ramped pyrolysis/oxidation (RPO) with Δ14C and δ13C isotopic analysis to assess DOM reactivity and origin in SPGW, river, and lagoon waters along the Alaska Beaufort Sea coast.
C. T. Connolly, R. G. M. Spencer, J. W. McClelland   +2 more
wiley   +1 more source

Radiocarbon Dating of Mortar Fragments from the Fresco of a Romanian Monastery: A Field Study. [PDF]

Materials (Basel)
Abrudeanu M, Simion CA, Valcea AE, Ilie MV, Ispas EA, Marin ML, Mirea DA, Olteanu DC, Manailescu C, Petre AR, Negrea DA, Moga SG, Maris I, Grecu D, Garbea G, Finta FN, Petrescu MI.   +16 more
europepmc   +1 more source

Efficient Automatic Pollen Recognition From Fossil Pollen Samples: A High‐Resolution Example Record From Palaeolake Kieshofer Moor, Northeastern Germany

Ecology and Evolution, Volume 16, Issue 6, June 2026.
We applied the two‐stage, AI‐based TOFSI approach to test automatic pollen recognition with fossil pollen samples. The algorithm performs very well for all major pollen types and other non‐pollen object classes, suggesting that such tools have the potential to substantially increase the efficiency of pollen analysis.
Martin Theuerkauf, Alexander Gillert
wiley   +1 more source

Quaternary to recent uplift rates of salt diapirs in the Romanian Carpathians determined from radiocarbon dating and PSInSAR data. [PDF]

Sci Rep
Tamas DM, Tămaș A, Hajdas I, Sava GO, Poncos V, Teleaga D.   +5 more
europepmc   +1 more source

The last battle of Anne of Brittany: Solving mass grave through an interdisciplinary approach (paleopathology, biological anthropology, history, multiple isotopes and radiocarbon dating). [PDF]

PLoS One, 2021
Colleter R, Bataille CP, Dabernat H, Pichot D, Hamon P, Duchesne S, Labaune-Jean F, Jean S, Le Cloirec G, Milano S, Trost M, Steinbrenner S, Marchal M, Guilbeau-Frugier C, Telmon N, Crubézy É, Jaouen K.   +16 more
europepmc   +1 more source

Glacial refugia, postglacial dynamics, and hybrid zones of Pinaceae in Eurasia captured from sedimentary ancient DNA

Ecosphere, Volume 17, Issue 6, June 2026.
Abstract Boreal forests cover nearly one‐third of global forest area. Glacial cycles have shaped the distribution and connectivity of modern Pinaceae genera, yet species‐level refugia, postglacial migrations, and hybridization patterns remain unclear due to limited high‐resolution taxonomic and temporal data. We applied a hybridization capture approach
Stefano Meucci, Kathleen R. Stoof‐Leichsenring, Yanrong Zhang, Andrei A. Andreev, Konstantin V. Krutovsky, Boris K. Biskaborn, Inger G. Alsos, Laura Parducci, Kevin Nota, Sandra Garcés‐Pastor, Petr Kuneš, Walter Finsinger, Eleonora Cagliero, Daniel Vondrák, Jaroslav Kukla, Darrell Kaufman, Barbara Wohlfarth, Heikki Seppä, Ulrike Herzschuh   +18 more
wiley   +1 more source

Cycad forensics: tracing the origin of poached cycads using stable isotapes, trace element concentrations and radiocarbon dating techniques

, 2013
In South Africa, the greatest threat to cycad populations is the illegal removal of wild plants for landscaping purposes and collector's gardens, resulting in declining populations that are already threatened with extinction.
Retief, Kirsten
core  

Direct hydroxyproline radiocarbon dating of the Lapedo child (Abrigo do Lagar Velho, Leiria, Portugal). [PDF]

Sci Adv
Linscott B, Devièse T, Duarte C, Trinkaus E, Zilhão J.   +4 more
europepmc   +1 more source

Central European Early Bronze Age chronology revisited: A Bayesian examination of large-scale radiocarbon dating. [PDF]

PLoS One, 2020
Brunner M, von Felten J, Hinz M, Hafner A.   +3 more
europepmc   +1 more source

Quantification of ground surface movements on sorted circles using time‐lapse structure‐from‐motion photogrammetry in a karst cave, Slovenia

Earth Surface Processes and Landforms, Volume 51, Issue 6, June 2026.
We present ground surface movements on sorted circles in a karst cave using time‐lapse photogrammetry with accuracies of up to ±2 mm. Data with 3‐hourly resolution revealed average vertical movements of up to 50 mm and horizontal movements of up to 15 mm during individual freeze–thaw cycles.
Jaroslav Obu, Matej Blatnik, Julia Boike, Franci Gabrovšek, Luc Girod, Andreas M. Kääb, Norikazu Matsuoka, Paul P. Overduin, Mihaela Triglav Čekada, Marko Zore   +9 more
wiley   +1 more source