all >10yr switchgrass fields, next to business-as-usual annual crops. All with #radiocarbon measurements down to 1 meter. Would you expect more SOC in the perennial grass soils? Or a correlation with pH, climate, mineralogy? Read it. You'll be glad you did.
(Hint: yes, it is all about the roots!)
NEW in Innovation GeoScience
Temperature shapes spatial-temporal patterns of global #soil #carbon accumulation
doi.org/10.59717/j.x...
#SoilOrganicMatter #SoilOrganicCarbon #sequestration #carbonsequestration #CO2 #model #GlobalChange #ClimateChange #GlobalWarming #landuse
#forest #radiocarbon
Deadline extension until the 31 March. Submit your abstracts here: app.oxfordabstracts.com/auth?redirec...
@14cjournal.bsky.social
#radiocarbon #radiocarbonanddiet #radiocarbonlatinamerica
A plot of Bayesian modeled probabilities for radiocarbon ages. They are in perfect order from oldest to youngest up the stratigraphic column.
New dates back today from a 4,000yr old shell midden on the Georgia Coast! A perfectly accumulated context! c. 2 meters of regular midden accumulation in less than 100yrs 😍 #archaeology #ecology #radiocarbon
Labeled bags full of bone and botanicals laid out across a lab table.
Whats up in the lab today? About to run 47 dates from a 2,000yr-old settlement of the Xiongnu Empire in Mongolia and 23 dates from a rock shelter in Kyrgyzstan that was once along the Silk Road! Asa and Christina (@cmcarolus.bsky.social) are doing the COOLEST work! #archaeology #history #radiocarbon
Our new paper is now published in Earth System Science Data (ESSD):
A complete database of AMS #radiocarbon estimates from Lake #Baikal sediment cores with a lake-wide assessment of TOC age offsets
Am quite proud of this one! #geosky 🧪
essd.copernicus.org/articles/18/...
Calling all University students interested in learning more about #Radiocarbon dating & #Bayesian analysis. There are still free places available on this short course for #NERC & #AHRC students!
New research refines marine radiocarbon corrections for Magdalenian Spain, showing that different shell species age differently. The result is a sharper timeline for coastal Ice Age life and cave occupations. #Radiocarbon #Paleolithic #Archaeology #HumanEvolution www.anthropology.net/p/when-shell...
New paper published!
Using radiocarbon tracers in Tonga, we revealed "old" groundwater discharge that standard salinity measurements or major elements analysis miss.
#radiocarbon #carbonate #groundwater
authors.elsevier.com/a/1mRKu,3rKY...
I'm starting #DigiArchMaintainathon today, working further with @jfy133 and Deon de Jager on a new standard for reporting #radiocarbon dates: https://github.com/MIxS-MInAS/miaard/
Este pedacito de carbón vegetal, así como lo ven, tiene entre 9,700 y 8,500 años de antigüedad. Vamos a develar el misterio.
#karst #history #radiocarbon
Making my way from Copenhagen to Leipzig for a workshop on #radiocarbon data and metadata organised by @jfy133. I'm looking forward to the workshop but---strangely maybe moreso---10 hours of focused time on the train.
I unfortunately haven't done so much solo #CrossBorderRail this year. It's […]
Read a shorter summary of the multidisciplinary study on our website: bit.ly/4nClHUB
#aDNA #ancientgenomics #genome #mtdna #anthropology #forensics #botany #isotope #radiocarbon #DentalCalculus
2/2
XRONOS is an open data infrastructure for the backbone of the archaeological record – chronology.
As described in our paper out today in the Journal of Computer Applications in Archaeology (journal.caa-international.org/articles/10.5334/jcaa.19... XRONOS is the most comprehensive […]
👋 Hello, Bluesky! We’re Radiocarbon, an international peer-reviewed journal (since 1959) dedicated to advancing radiocarbon research, from calibration and chronology to applications across archaeology, geology, environmental science, and more. We’re glad to be here. #Radiocarbon #Geochronology
The 4th edition of the Radiocarbon and Diet Conference will be held at Universidad Católica de Chile, Santiago-Chile on the 6th-8th of July 2026. Save the date !
#radiocarbon #diet #santiago2026
🔬 Sahra Talamo at the University of Bologna refined #radiocarbon dating using ancient tree rings to improve the timeline of interactions between modern humans and Neanderthals.
👉 buff.ly/ROCd6rf
#GeneEditing #prehistory #ethnoarchaeology #FrontierResearch
Bar charts showing sample sizes in the FAMM database. Shown are the total number of specimens, number of specimens with radiocarbon data, number of specimens with stable isotope data, and number of specimens with ancient DNA data.
FAMM is by far the largest #fossil database (~3400 specimens), including 3 #Whale 🐋 species, #PolarBear 🐻❄️, #Walrus, 6 #Seal species 🦭, and the Steller's Sea Cow.
FAMM is also the FIRST fossil database to harmonize #Radiocarbon ☢️, #StableIsotopes ⚛️, and #AncientDNA 🧬 at the specimen level!
🧵 2/🦴
#GrandCanyon #Landslide #Dam & #Paleolake Triggered By The #Meteor #Crater Impact At 56 Ka
-
doi.org/10.1130/G535...
-
#geology #water #hydrology #massmovement #Nankoweap #ColoradoRiver #earthquake #seismic #dating #radiocarbon #Pleistocene #sediments #elevation #geomorphology #geomorphometry
Researchers in #archaeology have worked for many decades to analyze large numbers of #radiocarbon dates from sites across the world.
The P3K14C dataset developed by Darcy Bird and colleagues has aggregated and organized over a 166,000 of these dates. See […]
Job offer: PhD student in Palaeoclimatology/-ecology (f/m/d) As part of the SNF-project Signatures of Global Late Glacial Climate Change in Tree-Ring Records (SiGnaL), co-led by the Dendrosciences group at WSL and the Laboratory of Ion Beam Physics (LIP) at ETH Zurich, you will, along with two other PhD students and technicians, contribute to understanding the nature and drivers of abrupt climate changes during the Late Glacial period (approximately 11’000-15’000 years ago). Your work will include the collection, measurement, and integration of fossil wood and tree-ring material from various global sites. Through a multi-proxy approach - combining radiocarbon dating, stable isotope ratios, and quantitative wood anatomy - you will help to date and synchronize records across regions and reconstruct regional to global climate dynamics. This will help refine our understanding of Late Glacial climate dynamics and contribute to improvements of the global radiocarbon calibration curve. You have a Master's degree in Environmental Sciences, Earth Sciences, or a related field, and preferably have already gained experience with radio-carbon and stable isotope measurements. You are comfortable analyzing and visualizing data in R or Python and are motivated to publish your results in scientific journals. You enjoy to work in the lab, with large datasets, and have an interest in interdisciplinary and international research. You like to work independently, structured and accurate. You are communicative and team-oriented and have excellent spoken and written English language skills as well as at least the knowledge of one Swiss national language.
🪵 #PhDAlert! MSc in #Environmental Sciences or a related field? Experience in #radiocarbon and #StableIsotope measurements? Our #Dendrosciences group is offering a 4-year #PhD position in #palaeoclimatology & #palaeoecology: apply.refline.ch/273855/1764/... #ScienceJobs #dendrochronology #dendrology
Job offer: Technician in Palaeoclimatology/-ecology 80% (f/m/d) As part of the SNSF-project Signatures of Global Late Glacial Climate Change in TreeRing Records (SiGnaL), co-led by the Dendrosciences Group at WSL and the Laboratory of Ion Beam Physics (LIP) at ETH Zurich, you will support research on the nature and drivers of abrupt climate changes during the Late Glacial period (approximately 11’000-15’000 years ago). You will assist three PhD researchers in dating, measuring, and synchronizing tree-ring samples from preserved subfossil wood across several regions. This will help refine our understanding of Late Glacial climate dynamics and contribute to improvements of the global radiocarbon calibration curve.Your main tasks will involve surface preparation and high-resolution scanning of subfossil tree-ring material, sample preparation for stable isotope analysis (δ¹³C / δ¹⁸O / δ²H) including image-based tree-ring width measurements, cutting of individual tree rings, cellulose extraction and homogenization, and packing of samples for isotope ratio mass spectrometry (IRMS). In addition, you will contribute to the production of quantitative wood anatomical (QWA) data by preparing wood microsections and image-based measurements of cell structures using the software ROXAS. You preferably hold a Master's degree in Environmental Sciences, Earth Sciences, or a related field and have demonstrated experience in preparing wood samples for stable isotope, QWA, and/or radiocarbon analysis. ldeally, you are familiar with dendrochronology and laboratory work, enjoy contributing to methodological advancements, and have interest in interdisciplinary and international research. You work independently, structured and accurate, are communicative and team-oriented, and have very good spoken and written English language skills.
🌲 #JobAlert! MSc in #Environmental Sciences or a related field? Experience in preparing wood samples for #StableIsotope and #radiocarbon analysis? Our #Dendrosciences group offers a position for a #technician: apply.refline.ch/273855/1763/... #ScienceJobs #dendrochronology
Job offer: The research unit Forest and Soil Ecology assess the impact of climate change and management on forests and their soils. The Soil Biogeochemistry group at the Birmensdorf site is looking for a candidate to start in January 2026 as a PhD student in Soil Biogeochemistry (f/m/d) You will be working within the "FutureForests Doctoral Network", an EU-funded Marie Skłodowska-Curie Actions (MSCA) initiative, which aims to train the next generation of scientists in assessing the impacts of global change on European forests utilizing a unique network of European flagship field forest facilities. Based at WSL Birmensdorf, you will investigate the effects of drought on organic matter turnover and carbon storage in the soil in the VPDrought experiment (Valais, Switzerland). The research will involve measuring soil microbial communities, as well as carbon and nitrogen pools and fluxes, using stable isotope and radiocarbon techniques. Complementary analysis will be conducted at selected manipulation facilities in Estonia (University of Tartu), Austria (University of Innsbruck) and Germany (Technical University of Munich) to compare the impacts of recurrent droughts on soil processes under global change. You hold a master’s degree in environmental science, soil science, microbiology, or a related discipline. You demonstrate strong communication skills, self-motivation, an aptitude for field research, and a commitment to collaborative, interdisciplinary work. Good written and spoken English skills are required. Moreover, you should comply with the MSCA mobility rules: you must not have resided or carried out your main activity (work, studies, etc.) in the country of the recruiting organization for more than 12 months in the 36 months immediately before your recruitment date (January 2026).
🦠 #PhDAlert! MSc in #Environmental Sciences or a related field? Interested in #Microbiology and #SoilScience? Our #Forest and #SoilEcology group is offering a 4-year #PhD position in #Soil #Biogeochemistry: apply.refline.ch/273855/1760/... #ScienceJobs #globalchange #radiocarbon
Job offer: The Research Group Dendrosciences uses tree rings to investigate and understand environmental impacts on tree growth and to reconstruct past environmental changes at scales ranging from minutes to millennia and from cells to ecosystems around the globe. From 1 November 2025, we offer a 4-year position as a PhD in Palaeoecology 100% (f/m/d) As part of the Signatures of Global Late Glacial Climate Change in Tree-Ring Records (SiGnaL) project — co-led by the Dendrosciences group at WSL and the Laboratory of Ion Beam Physics (LIP) at ETH Zurich — you will contribute to understanding the nature and drivers of abrupt climate changes that occurred during the Late Glacial period, approximately 11 - 15 kyrs BP. Your work will focus on the collection, measurement, and integration of fossil wood and tree-ring material from various global sites. Through a multi-proxy approach — combining radiocarbon dating, stable isotope ratios, and quantitative wood anatomy — you will help to date and synchronize records across regions and reconstruct regional to global climate dynamics. This work will support the project's goal of improving our understanding of the Late Glacial climate system and enhancing the global radiocarbon calibration curve. You will be part of an enthusiastic and ambitious team that includes leading researchers in dendro-chronology, palaeoclimate research, and radiocarbon dating, along with two other PhD students and technicians. The position is based at WSL within the Dendrosciences group, a globally recognised centre for tree-ring science. Collaboration with international researchers from related institutions is also expected. Among the three PhD students involved in the project, you will have a special emphasis on wood anatomy and on the climatic interpretation of the tree-ring proxies.
🪵🌲 #PhD Alert! MSc in #Environmental Sciences or a related field? Interested in #wood anatomy and experience with #tree-ring data? Our Dendrosciences group is offering a 4-year PhD position in #Palaeoecology: apply.refline.ch/273855/1761/... #ScienceJobs #dendrology #radiocarbon
Still doing the science thing! New preprint in review in ESSDD on persistent problem of old 14C ages for suface seds in Lake #Baikal. Nice thing about this study is the database that Sam built for every #radiocarbon date on Baikal seds and their 'quality' 🧪
essd.copernicus.org/preprints/es...
Map of the Pacific with the East Polynesian cultural sphere indicated, creating a sort-of triangle between New Zealand, Hawai'i and Rapa Nui.
How did ritual practices spread across East Polynesia? #WednesdayWisdom🏺
Thought to have spread with the first settlers from west to east, new #radiocarbon dates indicate some ideas originated in the east, presenting a more interconnected Pacific world.
Learn more 🆓 doi.org/10.15184/aqy...
Excavation of a stone platform. Above it is the rebuilt elaborated ahu with moai statues (photograph by A. Skjölsvold).
Ahu/Marae complexes are East Polynesian ritual spaces and monumental platforms, constructed as conspicuous gathering places for rituals #MonumentsMonday 🏺
New #radiocarbon dates indicate they originated on isolated Rapa Nui/Easter Island before spreading west.
Learn more 🆓 doi.org/10.15184/aqy...
#Radiocarbon funding application #rejected, but such useful and clear #feedback! Really looking forward to improving it next few months 😁
Recent research and the discovery of a new section of the megalithic complex of Carnac suggest that monuments in southern Brittany (#France) may mark the beginning of megalithic tradition in northwest Europe
www.cambridge.org/core/journal...
#Archaeology
#MegalithicMonuments
#Radiocarbon
Using #AI and #radiocarbon dating, #researchers found texts like #Daniel and #Ecclesiastes were written earlier than believed—placing Ecclesiastes in the 3rd century BCE and the Herodian script as early as the late 2nd century BCE.
www.ynetnews.com/environment/...
