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Call for Papers for the semi-thematic N° 67: (Re)defining rural territories, between the global South and North: actors, processes, scales.
Full papers are invited to be submitted via the journal's official platform by 15 March 2024.
For more information, please check this link
Morphogenesis of the zeta form embayment and the associated estuarine terrace in Pichilemu: prototype for Central Chile
Abstract
An evolutive scheme is proposed for the embayment of Pichilemu. The used methods deal with three theoretical and fundamental principles: the interaction between oblique swell and offset coast, adjustment of sediments to refracted swell and effect of the frandnan transgression. The allostratigraphy of the
system was correlated with similar cases visited in the region and withresults on geochronology in some of them. The analyzed system results from an interaction between two principal processes: formation of ria including estuary and production of a zetaform embayment, associated to an estuarine terrace. This
form is thought to be formed in the Holocene, starting from its correlation with homologous features of Central Chile. It is found that the two principal morphogenetical processes were sinchronic and that the development of which can be synthesized in four essential moments: effect during the transgression,
maximum of the Holocenic transgression filling, effect of balance between recent sea level rise and cortical uplift (formation of the estuarine terrace), and modern effect of shore sediment overload.
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