Data relates to the NERC Urgency Grant NE/R00210X/1 which focusses on Sediment signatures of the 25 December 2016 Chile earthquake to constrain detection limits of tidal marsh records. The documentation provides an overview of findings from two field seasons to the southern coast of Isla de Chiloé, Chile, including field observations, sediment samples and surface vegetation surveys. The research locations for diatom analyses are Ayentema, Asasao, Inio and Quilanlar, southern Chiloé, Chile. Field season 1 (excluding travel dates): 2-9 August 2017 Field season 2 (excluding travel dates): 6-16 October 2017 Diatom data collection: through to 30 June 2018

Three registers of thin sections of predominantly Palaeozoic macrofossils together with algae, plants and a very few radiolarians and spores. The locality and geological horizon is also given It includes various collections including Garwood collection. There is cross reference where specimens have been re-registered. Also information about where specimens have been illustrated in the literature. PF1-7374 have been used.