Browsing by Author "Araya Cornejo, Cristian Iván"

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    LiDAR and GPR Data Reveal The Holocene Evolution of a Strandplain in a Tectonically Active Coast
    (2025) Martínez Reyes, Carolina Del Pilar; Araya Cornejo, Cristian Iván; Aedo, Diego; Melnick, Daniel
    This study investigates the Holocene evolution of the Laraquete-Carampangue strandplain (LCS) on the tectonically active coast of south-central Chile using Ground Penetrating Radar (GPR) and LiDAR data. Laraquete-Carampangue strandplain (LCS), on the tectonically active coast of south-central Chile, is a rare accretionary feature in a region dominated by rocky shorelines and limited sediment supply. LiDAR-derived digital elevation model reveals a complex geomorphology comprising 52 beach ridges, aeolian dunes, and fluvial paleochannels, while GPR radargrams uncover marine and aeolian facies influenced by past seismic and climatic events. We interpret these units in the frame of past seismic and climatic events. Our geomorphological and stratigraphic findings suggest that the strandplain progradation was driven by relative sea-level changes associated with past seismic cycles and Holocene climate change. We propose that the transition from drier to humid conditions in the late Holocene triggered the onset of dune formation at the end of the Little Ice Age. This integrated approach highlights the interplay of tectonic and climatic forcings in shaping coastal landforms, offering insights into their long-term response to environmental change.