A Chronology of Ancient Earthquake Damage in the Modena Cathedral (Italy): Integrated Dating of Mortars (14C, Pollen Record) and Bricks (TL)

Researchers have uncovered a detailed chronology of earthquake damage in the Modena Cathedral by analyzing the dating of mortars and bricks. The study reveals that the cathedral's 15th-century cross-vaults were constructed using lime mortar binding reused Roman and medieval bricks, with subsequent repairs linked to earthquakes in the 16th and 17th centuries. Gypsum mortars were used for extensive rebuilding and repairs in the 18th and 19th centuries. The integrated approach, combining radiocarbon dating (14C), thermoluminescence (TL) dating of bricks, and pollen records from mortars, provides a precise timeline of construction and restoration. This methodology not only sheds light on the cathedral's history but also offers critical insights for earthquake risk assessment and preservation strategies for ancient structures.

Tirelli, G., Bosi, G., Galli, A., Hajdas, I., Lindroos, A., Martini, M., Maspero, F., Mazzanti, M., Olsen, J., Panzeri, L., Ringbom, Å., Sibilia, E., Silvestri, E., Torri, P., & Lugli, S. (2021). A Chronology of Ancient Earthquake Damage in the Modena Cathedral (Italy): Integrated Dating of Mortars (¹⁴C, Pollen Record) and Bricks (TL). International Journal of Architectural Heritage, 17(2), 326–342. https://doi.org/10.1080/15583058.2021.1922783