First luminescence geochronology of the beach-dune ridges of Nayarit strand-plain (west-central Mexico)

Muñoz-Salinas, E., Castillo, M., Sanderson, D. C.W. and Cresswell, A. (2018) First luminescence geochronology of the beach-dune ridges of Nayarit strand-plain (west-central Mexico). Journal of South American Earth Sciences, 88, pp. 642-648. (doi: 10.1016/j.jsames.2018.08.003)

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Strand-plains are composed by beach-dune ridges that constitute coastal sedimentological records of continental erosion and associated climatic and geological controls on their formation. The strand-plain of Nayarit is one the most prominent strand-plains around the world as it is composed by > 250 well-preserved beach-dune ridges that distributes along > 200 km between the states of Nayarit and Sinaloa (west-central Mexico) and extends for 14 km inland. Although the strand-plain of Nayarit is of broad interest for understanding the evolution of Quaternary landscapes, it has remained understudied. To contribute to a better understanding of the landscape evolution of the strand-plain of Nayarit we present here a complete geochronology based on sixteen OSL dating ages distributed across three different transects of beach-dune ridges located from the coast towards the inland. Our data indicate that in all cases the oldest ridges initiated 2 ka. The depositional rates range from 6.0 m a –1 toward the south of the strand-plain, where is the mouth of Santiago and San Pedro rivers, which are the largest of the study area, to 1.8 m a –1 toward the north. These depositional rates are among the highest denudation rates reported in strand-plains around the world. We estimate that the formation of the coastal plain of Nayarit initiated 6 to 7 ka, which correspond to last period of the global marine stabilization after sea level rise.

Item Type:Articles
Additional Information:This work was supported by grant UNAM-DGAPA-PAPIIT number IN105517.
Keywords:Strand-plain, beach-dune ridges, luminescence dating, Nayarit, west-central Mexico.
Glasgow Author(s) Enlighten ID:Cresswell, Dr Alan and Sanderson, Professor David
Authors: Muñoz-Salinas, E., Castillo, M., Sanderson, D. C.W., and Cresswell, A.
Subjects:G Geography. Anthropology. Recreation > GB Physical geography
College/School:College of Science and Engineering > Scottish Universities Environmental Research Centre
Research Group:Environmental Physics
Journal Name:Journal of South American Earth Sciences
Journal Abbr.:JSAMES
ISSN (Online):1873-0647
Published Online:07 August 2018
Copyright Holders:Copyright © 2018 Elsevier Ltd.
First Published:First published in Journal of South American Earth Sciences 88: 642-648
Publisher Policy:Reproduced in accordance with the publisher copyright policy

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