Geomorfología y evolución geológica reciente del litoral del Parque Nacional Pan de Azúcar(norte de Chile)

  1. Tatiana Izquierdo 1
  2. Germán Carrasco 2
  3. Joaquín Rodríguez Vidal 3
  4. Francisco Ruiz 3
  5. Manuel Abad 4
  1. 1 nstituto de Investigaciones Científicas y Tecnológicas de la Universidad de Atacama, Copiapó (Chile)
  2. 2 Grupo de investigación Recursos Hídricos y Geología del Cuaternario de Atacama, Universidad de Atacama, Copiapó (Chile)
  3. 3 Departamento de Ciencias de la Tierra, Universidad de Huelva
  4. 4 Área de Geología, ESCET, Universidad Rey Juan Carlos, Madrid
Journal:
Geogaceta

ISSN: 0213-683X

Year of publication: 2020

Issue: 67

Pages: 111-114

Type: Article

More publications in: Geogaceta

Metrics

SCImago Journal Rank

  • Year 2020
  • SJR Journal Impact: 0.18
  • Best Quartile: Q4
  • Area: Geology Quartile: Q4 Rank in area: 214/319

Scopus CiteScore

  • Year 2020
  • CiteScore of the Journal : 0.5
  • Area: Geology Percentile: 14

Abstract

The geomorphological analysis of the coastal sector of Pan de Azúcar National Park (Chile) allows describing several stages in its recent geological evolution, mainly controlled by the climate, varia-tions in the sea-level and the uplift of the Cordillera de la Costa. The first phases refer to the formation of three generations of marine te-rraces, while the last stage involves the Present Interglacial, the es-tablishment of the current sea-level, the formation of the Holocene marine cliff and the development of active forms, with predominance of the eolian and fluvial/alluvial processes on this coastal segment of the southern Atacama Desert. For the first time, the occurrence of a low marine terrace that crops out near current sea-level is described in the study area. It has been dated in ~44000 years and associated with the MIS-3 highstand. This age corroborates the beginning of a cycle of accelerated tectonic uplift, with rates of ~ 1 m/ka, recently proposed for northern Chile that would continue until today.