Open chronometric data for archaeology

Photo: Şahin Sezer Dinçer on Unsplash
Site 73,429


radiocarbon date 350,190

Radiocarbon dates

typological date 138,176

Typological dates

Coming soon!

Dendro dates

What is XRONOS?

In the spirit of the Open Science, the XRONOS project aims at developing a worldwide unique and novel database, to compile and manage the two most important forms of absolute chronological information – radiocarbon and dendrochronological data – to enable a multitude of transdisciplinary research projects on population dynamics, human-environmental dependencies and thus fundamental transformations in the past.


XRONOS development in 2022


There has been a lot of behind-the-scenes work on XRONOS this year. Our primary focused has been building a back-end interface for importing and curating data. This will be the foundation of more visible changes next year, when we will start a push to significantly improve the accuracy and consistency of the database. [...]

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The map of XRONOS receives a clustered visualisation


Sometimes you are overtaken by your own success. This is what happened to us: The last update added so much data to the database that even current browsers and computers are overwhelmed by the display of all the sites on the map in XRONOS. Currently, more than 22,000 sites are displayed. As a result, the use of the map has been significantly slowed down and impeded. [...]

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XRONOS database significantly expanded


The last month of our work on XRONOS focused on the expansion of the dataset. In this turn, we have performed a re-import from publicly available sources, which has more than doubled the dataset, and significantly expanded the spatial extent of our data collection. [...]

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XRONOS gets a new Look and Feel


Since August 2021, XRONOS now has a completely new layout, which we hope will significantly improve and facilitate the use of our database. [...]

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R package for XRONOS available


To improve the use of data repositories, it is becoming increasingly important that the data is easily and quickly available to the appropriate analysis tools. [...]

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As of today, our team, especially Joe Roe, has completed the first important step towards realising the goals of XRONOS: the installation and release of the pilot version of the database! You can access the XRONOS DB at http://xronos.ch. [...]

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XRONOS Project funded by the SNF


On 6th of November 2020, we received the good news that the Swiss National Science Foundation (SNSF) will support and fund the XRONOS project. XRONOS is now officially listed under project number IZCOZ0_198153 and we can start our work. We are very grateful that the SNSF has given us this opportunity!

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