A unified clumped isotope thermometer calibration (0.5–1,100 C) using carbonate‐based standardization

NT Anderson, JR Kelson, S Kele… - Geophysical …, 2021 - Wiley Online Library
The potential for carbonate clumped isotope thermometry to independently constrain both
the formation temperature of carbonate minerals and fluid oxygen isotope composition …

The age of Homo naledi and associated sediments in the Rising Star Cave, South Africa

PHGM Dirks, EM Roberts, H Hilbert-Wolf, JD Kramers… - Elife, 2017 - elifesciences.org
New ages for flowstone, sediments and fossil bones from the Dinaledi Chamber are
presented. We combined optically stimulated luminescence dating of sediments with U-Th …

“Cryptic” diagenesis and its implications for speleothem geochronologies

P Bajo, J Hellstrom, S Frisia, R Drysdale, J Black… - Quaternary Science …, 2016 - Elsevier
Speleothems are usually considered as one of the most amenable palaeoclimate archives
for U-series dating. A number of studies in recent years, however, report cases of diagenetic …

Most Earth-surface calcites precipitate out of isotopic equilibrium

M Daëron, RN Drysdale, M Peral, D Huyghe… - Nature …, 2019 - nature.com
Oxygen-isotope thermometry played a critical role in the rise of modern geochemistry and
remains extensively used in (bio-) geoscience. Its theoretical foundations rest on the …

Evaporite karst in Italy: a review

J De Waele, L Piccini, A Columbu, G Madonia… - International Journal of …, 2017 - arts.units.it
Although outcropping rarely in Italy, evaporite (gypsum and anhydrite) karst has been
described in detail since the early 20th century. Gypsum caves are now known from almost …

Calibration of the dual clumped isotope thermometer for carbonates

J Fiebig, M Daëron, M Bernecker, W Guo… - … et Cosmochimica Acta, 2021 - Elsevier
The Δ 47 (paleo) thermometer has opened a new avenue to determine carbonate formation
temperatures independent of the oxygen isotopic composition of the fluid from which the …

The so-called “4.2 event” in the central Mediterranean and its climatic teleconnections

G Zanchetta, E Regattieri, I Isola… - Alpine and …, 2016 - amq.aiqua.it
High-resolution isotopic analyses were performed on RL4 flowstone from Renella Cave
(Alpi Apuane, central Italy), a speleothem studied previously at low resolution. The new data …

Persistent influence of obliquity on ice age terminations since the Middle Pleistocene transition

P Bajo, RN Drysdale, JD Woodhead, JC Hellstrom… - Science, 2020 - science.org
Radiometric dating of glacial terminations over the past 640,000 years suggests pacing by
Earth's climatic precession, with each glacial-interglacial period spanning four or five cycles …

Speleothem record attests to stable environmental conditions during Neanderthal–modern human turnover in southern Italy

A Columbu, V Chiarini, C Spötl, S Benazzi… - Nature ecology & …, 2020 - nature.com
The causes of Neanderthal–modern human (MH) turnover are ambiguous. While potential
biocultural interactions between the two groups are still little known, it is clear that …

Stalagmite carbon isotopes and dead carbon proportion (DCP) in a near-closed-system situation: An interplay between sulphuric and carbonic acid dissolution

P Bajo, A Borsato, R Drysdale, Q Hua, S Frisia… - … et Cosmochimica Acta, 2017 - Elsevier
In this study, the 'dead carbon proportion'(DCP) calculated from combined U-Th and
radiocarbon analyses was used to explore the carbon isotope systematics in Corchia Cave …