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Francisca Santana Sagredo

@fransantanas.bsky.social

Bioarchaeologist, National Geographic Explorer. Interested in isotope analysis, organic residue analysis, radiocarbon dating, human osteology and Andean archaeology.

60 Posts971 Follower172 Folgt
School of Archaeology@unioxarchaeology.bsky.social · 3w ago

Fran's (alumna DPhil) thoughtful study of bioanthropological, radiocarbon dating & sequential analyses of teeth & hair to reconstruct an archaeological biography for one woman who lived & died in the Atacama Desert of northern Chile +500 years ago. royalsocietypublishing.org/rsos/article...

Tracking the life and last journey of an Altiplano woman from the Atacama Desert

Abstract. The unusual burial of a young woman in the Pica Oasis in the Atacama Desert (northern Chile) during the Late Intermediate Period (AD 900–1450) ra

royalsocietypublishing.org

Francisca Santana Sagredo@fransantanas.bsky.social · 3w ago

We had two great conferences last week, Radiocarbon and Diet and CLARa3. Thank you so much for your participation and enthusiasm. I hope we keep working together with the Radiocarbon community. And who knows…maybe in the future Chile will have a Radiocarbon facility (AMS included). ⚛️

Rick Schulting@rschulting.bsky.social · last mo.

Delighted to have been awarded an ERC Advanced Grant for 'Stocking the Past' which will investigate the balance between arable farming and stockkeeping in Neolithic and Bronze Age Britain and Ireland using a range of isotopic and genomic approaches with a great team. Should be fun!

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Francisca Santana Sagredo@fransantanas.bsky.social · 4w ago

Our new paper is out! Here we reconstructed the life and journey of an altiplano woman that travelled to the Atacama Desert during her last year of life, changing her diet and lifestyle: royalsocietypublishing.org/rsos/article... @ramiro-arqueo.bsky.social @profchrisharrod.bsky.social

Tracking the life and last journey of an Altiplano woman from the Atacama Desert

Abstract. The unusual burial of a young woman in the Pica Oasis in the Atacama Desert (northern Chile) during the Late Intermediate Period (AD 900–1450) ra

royalsocietypublishing.org

Jesse Wolfhagen@uncertainarch.bsky.social · 3mo ago

Just saw a great talk by @alnorwood.bsky.social about why you should use her models for your (obviously copious) zebra and other equid d18O data! Also why you should care about enamel histology (and she's done the worrying about it for you)! And to look out for upcoming bovid models #SAA2026SFO

Alex Norwood@alnorwood.bsky.social · 8mo ago

Our new paper builds a set of models to recover real-time seasonality data from serial enamel isotope profiles. It's currently operationalized for Equus, so please use the models on your horse and zebra serial isotope data! The paper is open access and available here: doi.org/10.1016/j.ch...

Ramiro Barberena@ramiro-arqueo.bsky.social · 5mo ago

How did farming reach Uspallata? Through migration of farmers—or through cultural transmission with local hunter-gatherers? We address this through an integrative study of human remains spanning the last 2000 years, combining archaeology, isotopes and genomes.

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Ramiro Barberena@ramiro-arqueo.bsky.social · 5mo ago

We find strong genetic continuity through time, suggesting that agriculture spread without major population movement. Instead, local communities adopted farming practices while maintaining deep regional ancestry.

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Ramiro Barberena@ramiro-arqueo.bsky.social · 5mo ago

Strontium isotopes show that many of these individuals did not live in Uspallata and that the valley saw increased immigration. These were families with a matrilineal organization that migrated in succesive generations.

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Ramiro Barberena@ramiro-arqueo.bsky.social · 5mo ago

Why did they leave their homes? We suggest it was a response to a long and multicausal crisis. Low populaiton size, climatic instability and the transmission of infectious diseases-tuberculosis- triggered migration along social networks. This was a resilient response.

Artist: Mauricio Alvarez
Ramiro Barberena@ramiro-arqueo.bsky.social · 5mo ago

1/6 Just out in @Nature ! 🌽 The history of farming in the southern Andes. In a collaboration between archaeologists, geneticists and Huarpe Indigenous communities, we investigate its origins and consequences in the Uspallata Valley. Read: www.nature.com/articles/s41...

Local agricultural transition, crisis and migration in the Southern Andes - Nature

In the Uspallata Valley, agriculture was adopted by local populations, as evidenced by genetic continuity from earlier hunter-gatherers to farmers; maize-dependent groups from the same regional p...

nature.com