🌑 The Dark Council meets!

Round Tables

Welcome to the Dark Side: Urban Dark Earth

A state of the art and perspectives

Rationale and Aims

Dark Earths – thick dark coloured homogeneous deposits often rich in archaeological remains – are a common phenomenon in European towns. Their seeming lack of stratigraphy has in the past resulted in a lack of research or even their discarding. Recent microscopic approaches, however, have convincingly demonstrated that Dark Earths contain an abundance of valuable information that can directly be related to important questions about towns and their formation.

The aim of the present Round Table is to assemble (geo-)archaeologists, historians and archaeoenvironmental specialists to discuss the implementation of these research techniques in the archaeological field work and how they have permitted to advance our understanding of town development.

Main Themes

The Round Table will be accompanied by short presentations, which shall encourage open discussions between participants around the following themes:

  • The integration of new methods and tools to investigate urban Dark Earths into the archaeological practice
  • Recording, storing and sharing of the data
  • Recent case studies (Medieval urbanisation processes; landscape history)
  • How can the study of Dark Earth contribute to the narratives on past urban development?

We would be pleased to address any questions or comments you may have regarding urban Dark Earth or related topics you would like us to discuss during the Round Tables. Please send your questions, ideas, topics, comments or pictures to geoarchaeology@unibas.ch.

Why Two Round Tables?

We are organising two round tables, both with similar structure, in order to reach as many people as possible and to understand how different regions are addressing these urban deposits. To accommodate potential scheduling or travel issues, participants will have the opportunity to attend the Round Table in either Brussels or Basel.

Round Table Brussels
© Devos Yannick, AMGC Vrije Universiteit Brussel
Round Table Brussels
  • Date: Tuesday, 19 May 2026
  • Time: 09:00 - 18:00
  • Location: Vrije Universiteit Brussel, Brussels (Belgium)

Programme

09:00-09:30
Welcome
09:30-09:45
Introduction Yannick Devos & Kristin Ismail-Meyer
Session 1: Chair: Kristin Ismail-Meyer
09:45-10:10
Dark earth and the urban genesis of Antwerp (Belgium): a state of research Tim Bellens
10:10-10:35
Revealing the Past: The Role of Dark Earth in Interpreting Brussels’ Archaeological Record Ann Degraeve
10:35-11:00
Another Dark Earth. The taphonomy of a medieval road surface in Ghent (Belgium, 10th - 12th c. AD) Anton Ervynck et al.
11:00-11:20
Break
11:20-11:40
Discussion
Session 2: Chair: Yannick Devos
11:40-12:30
Keynote: The Soil Micromorphology of European Dark Earth with special reference to Late Roman Britain and Late Antique examples from Roman Europe Richard Macphail
12:30-13:30
Lunch break
Session 3: Chair: Monica Alonso-Eguiluz
13:30-14:10
Deciphering Medieval Dark Earth in St. Ursanne Vieille Ville (Switzerland): A multiproxy approach Christine Pümpin, Lucia Wick, Astrid Röpke, Mónica Alonso-Eguiluz, Karine Marchand, Ursule Babey, Kristin Ismail-Meyer
14:10-14:35
Phytolith contributions to the study of urban Dark Earth in Belgium Luc Vrydaghs, Mónica Alonso Eguiluz & Yannick Devos
14:35-14:50
Open spaces are not empty! - Multi-proxy micromorphological insights into Dark Earths from Oudenaarde (Belgium) Meihui Li et al.
14:50-15:05
(peri-)urban Dark Earths in Brussels, Belgium Lucrezia Buoli et al.
15:05-15:15
Discussion
15:15-15:35
Break
Session 4: Chair: Christine Pümpin
15:35-16:00
Together into the Future: Collecting, storing, and sharing geoarchaeological data through the newly developed databases I-GEOARCHrec and I-GEOARCHive David Brönnimann & Sarah Lo Russo
16:00-16:25
From Roman Ruins to Marketplaces: Exploring Daily Life in Cologne’s Dark Earth Astrid Röpke, Christine Pümpin & Richard Exaltus
16:25-16:50
Tracing the suburbs of medieval/modern era towns - Dark Earth (garden soil) in Wrocław (SW Poland) Mateusz Krupski
16:50-17:15
Final discussion and Quiz
17:15
End of round table Brussels
📅
Round Table Basel
© Zaugg Rahel, Archäologische Bodenforschung Basel-Stadt
Round Table Basel
  • Date: Thursday, 11 June 2026
  • Time: 09:00 - 18:00
  • Location: University of Basel, Basel (Switzerland)

Programme

08:30-09:00
Registration Hörsaal /lecture hall 116, 1st floor
09:00-09:15
Welcome (to the dark side)
09:15-09:30
Introduction Christine Pümpin & Yannick Devos
09:30-10:00
Introduction to the topic
10:00-10:20
The late roman munimentum as a core element of Kleinbasels spatial organization Delia Weidkuhn & Simon Graber
10:20-10:40
Between ruins and reorganisation: the left bank of Basel becomes an episcopal city Sven Billo
10:40-11:00
Dark Earth or Not? What about the sediments of an ongoing excavation that document the surroundings of the Roman villa and the Medieval graveyard at Colombier (NE)? Eva Elisabeth Geith Hidam, Sarah Valérie Paudex & Judit Deák
11:00-11:30
Break
11:30-11:50
Strasbourg and its stratigraphy: a geoarchaeological GIS database Nathalie Schneider, François Lemonnier, Damien Ertlen, Ferréol Salomon & Jean-Jacques Schwien
11:50-12:10
“Darkness on the Edge of Lousonna”. Interdisciplinary investigation of the various facies of Dark Earth(s) encountered at the Vidy archaeological site. Romain Guichon, Morgan Millet, Alexandre Deseine, Judit Deák & Anaël Lehmann
12:10-12:30
Les Terres noires à Saint-Ursanne, un effet secondaire des eaux ? Karine Marchand & Ursule Babey
12:30-12:50
Deciphering Medieval Dark Earth in Saint-Ursanne (Switzerland) Christine Pümpin, Lucia Wick, Astrid Röpke, Mónica Alonso-Eguiluz, Karine Marchand, Ursule Babey & Kristin Ismail-Meyer
12:50-14:00
Lunch Break
14:00-15:15
Thematic workshops (in small groups)
15:15-15:45
Break
15:45-16:30
Results of the thematic workshops
16:30-17:00
Final discussion and conclusion Chair: Judit Déak
📅

Organisation

The Round Tables are part of the WEAVE project "Welcome to the dark side - disclosing the invisible stages of medieval organization through the integrated study of European Dark Earths". They are organised by the geoarchaeological teams of the Archaeology, Environmental Changes & Geo-Chemistry Research group (AMGC-Vrije Universiteit Brussel) and the Integrative Prehistory and Archaeological Sciences team (IPAS-University of Basel) with the support of FWO and SNSF.

Contact

  • For Brussels:
  • For Basel:
SNF Logo
Visit SNF project portal

Swiss National Science Foundation

UniBas Logo
Visit University of Basel

University of Basel

IPAS Logo
Visit IPAS website

Integrative Prehistory and Archeological Science

AMGC Logo
Visit AMGC website

Archaeology, Environmental Changes & Geo-Chemistry

VUB Logo
Visit VUB website

Vrije Universiteit Brussel

FWO Logo
Visit FWO project portal

Research Foundation - Flanders