| Autor: |
Sevink, Jan, Neef, Wieke, Alessandri, Luca, Hall, Rutger L., Ullrich, Burkart, Attema, Peter A. J. |
| Předmět: |
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| Zdroj: |
Geoarchaeology; Jan2021, Vol. 36 Issue 1, p54-71, 18p |
| Abstrakt: |
A protohistoric (c.10th–5th c. BC) briquetage site at Puntone (Tuscany, Italy) was studied to unravel the salt production processes and materials involved. Geophysical surveys were used to identify kilns, pits, and dumps. One of these pits and a dump were excavated, followed by detailed chemical and physical analyses of the materials encountered. The pit had been used for holding brine, obtained by leaching of lagoonal sediment over a sieve, that afterwards was discarded to form large dumps. Phases distinguished indicate that the pit filled with fine sediment and was regularly "cleaned." The presence of ferroan‐magnesian calcite in the pit fill testifies to the prolonged presence of anoxic brine. The production processes could be reconstructed in detail by confronting the analytical results with known changes in composition of a brine upon evaporation. These pertain in particular to the accumulation of "bitterns" and increased B (boron) concentrations in a residual brine. Both could be traced in the materials studied, and were found to be far more indicative than the ubiquitously studied concentrations of Cl and Na. Research Highlights: Reconstruction protohistoric briquetage based on physicochemical analyses.Salt production: leaching lagoonal sediment over sieve, followed by briquetage.Bitterns and boron excellent indicators protohistoric salt production processes.Ferroan‐magnesian calcite evidence brine‐filled pit with anoxic conditions. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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