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DOI 10.4461/GFDQ.2017.40.3

BINI M., ZANCHETTA G., RIBOLINI A., SALVATORE M.C., BARONI C., PAPPALARDO M., ISOLA I., ISLA F.I., FUCKS E., BORETTO G., MORIGI C., RAGAINI L., MARZAIOLI F. & PASSARIELLO I.,

Last Interglacial sea-level highstand deduced from notches and inner margins of marine terraces at Puerto Deseado, Santa Cruz Province, Argentina

Pages 29-39

Abstract

A detailed geomorphological survey was undertaken in the area of Puerto Deseado (Santa Cruz Province, Argentina) to reconstruct the Relative Sea-level (RSL) position during the Last Interglacial highstand. The presence of active and well-preserved abrasive notches and inner margins of terraces related to the MIS5e and to the Holocene, measured with DGPS, allowed to accurately estimate the RSL change from the present to the MIS5e highstand at ca. 21 m. The geomorphological and geochronological analyses support the notion of the presence of a significant regional tectonic uplift in the Atlantic Patagonia, which can be locally estimated at ca. 0.12 mm/yr.

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