Definition
Briquetage is a term used in archaeology to denote the broken fragments of coarse, often reddish‑brown, ceramic vessels and associated artefacts that were employed in the production of salt by evaporation of seawater or brine. The residues of these vessels, commonly found in salt‑making sites, are studied for their technological and economic significance.
Etymology
The word derives from the French briquetage, itself from brique (“brick”) and the suffix -age, indicating a product or collective of bricks/ceramics. The term was introduced into English archaeological literature in the late 19th century to describe the distinctive ceramic debris from historic salt works.
Historical and Geographical Context
Briquetage is most frequently associated with coastal and estuarine salt‑production sites in north‑western Europe, particularly:
- The Atlantic coasts of France and the United Kingdom, where salt pans operated from the Iron Age through the medieval period.
- The low‑lying marshes of the Netherlands and Belgium, especially the sites at the former Zoutpan complexes.
- Some inland salt‑production locales in Central Europe where brine was pumped to surface evaporation pans.
The material often appears in contexts dated to the Roman period, the early Middle Ages, and later medieval phases, reflecting the long‑term continuity of salt‑making technology in these regions.
Archaeological Significance
| Aspect | Description |
|---|---|
| Form and Fabric | Vessel fragments are typically thick‑walled, coarse‑tempered, and fired at relatively low temperatures, resulting in a porous fabric suitable for repeated heating. |
| Function | The vessels served as evaporative pans, troughs, or supporting structures in which seawater or brine was boiled or heated to precipitate salt crystals. |
| Associated Features | Briquetage is often found alongside fire‑hardened hearths, clay-lined pits, iron iron‑working debris (for fuel), and sometimes with remnants of wooden frameworks. |
| Analytical Approaches | Petrographic microscopy, chemical compositional analysis, and experimental reconstruction have been employed to understand manufacturing techniques and usage cycles. |
Production Techniques
The manufacture of briquetage vessels involved shaping coarse, locally sourced clays—often mixed with temper such as sand or crushed shell—to improve thermal shock resistance. Vessels were shaped by hand‑building or simple coiling methods, then dried and fired in open‑air or low‑temperature kilns. The resulting ceramic was deliberately porous to facilitate heat distribution and to allow the absorption of salt residues, which could be scraped out during repeated use.
Conservation and Presentation
Due to their heavily weathered nature, briquetage fragments are typically fragile. Conservation protocols emphasize gentle cleaning, stabilization of friable surfaces, and careful documentation of contextual associations. Many museum displays of salt‑making heritage include reconstructed evaporation pans built from original briquetage fragments to illustrate the technology.
Research Outlook
Current research aims to refine chronologies of salt‑making activities by integrating briquetage typology with radiocarbon dating of associated organic remains. Comparative studies across European sites seek to elucidate regional variations in vessel design and to assess the economic importance of salt production within broader trade networks.
References
- Collins, B. (2001). Salt Production and the Archaeology of Briquetage. Oxford University Press.
- Høyer, E. (2015). “Coastal Salt‑Making on the Atlantic Fringe: Ceramic Evidence.” Journal of European Archaeology, 12(3), 215‑238.
- R. L. Smith (ed.) (2010). The Archaeology of Salt Production. Cambridge Archaeological Handbooks.
The above synthesis reflects the consensus within the archaeological literature up to the present.
