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Articles | Volume 15, issue 11
Articles | Volume 15, issue 11
https://doi.org/10.5194/se-15-1343-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/se-15-1343-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 15, issue 11
Research article
 | 
14 Nov 2024
Research article |  | 14 Nov 2024

The protocataclasite dilemma: in situ 36Cl and REE-Y lessons from an impure limestone fault scarp at Sparta, Greece

Bradley W. Goodfellow, Marc W. Caffee, Greg Chmiel, Ruben Fritzon, Alasdair Skelton, and Arjen P. Stroeven

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Short summary
Reconstructions of past earthquakes are useful to assess earthquake hazard risk. We assess a limestone scarp exposed by earthquakes along the Sparta Fault, Greece, using 36Cl and rare-earth elements and yttrium (REE-Y). Our analyses indicate an increase in the average scarp slip rate from 0.8–0.9 mm yr-1 at 6.5–7.7 kyr ago to 1.1–1.2 mm yr-1 up to the devastating 464 BCE earthquake. REE-Y indicate clays in the fault scarp; their potential use in palaeoseismicity would benefit from further study.
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