El Holoceno en Canarias

• Alejandro Lomoschitz ^[1] ; Angel Rodríguez Santana ^[1] ; Antonio J. G. Ramos ^[1] ; J. F. Betancort ^[1] ; J. Coca ^[1] ; Joaquín Francisco Meco ^[1]
  1. [1] Universidad de Las Palmas de Gran Canaria

     Universidad de Las Palmas de Gran Canaria

     Gran Canaria, España

     
• Localización: XV Reunión Nacional de Cuaternario Bizkaia Aretoa: Bilbao, 1-5 julio 2019. Libro de resúmenes, 2019, ISBN 978-84-17713-16-4, págs. 67-70
• Idioma: español
• Enlaces
  • Texto Completo Libro
• Resumen

  • Fuerteventura (Canary Islands) hosts the most representative emergent Holocene marine deposits in the middle latitudes of the eastern Atlantic Ocean. The deposits consist of berms and beachrocks suggesting a cyclical cause as the orbital movement of the Earth. Radiocarbon ages place a group at around 4.2 kyr BP and another group at around 1.4 kyr BP. They have been recorded at 4 m and 3.5 m apmsl respectively. The present-day tidal amplitude is around 3 m. Assuming a similar value for the Holocene, the corresponding relative sea level rises were around 2.5 m and 2 m apmsl respectively. During these two periods, the sea surface temperatures at the southern tip of the Canary Current were colder than the present-day SST. Intercalated terrestrial deposits indicate a lowering of the sea-level at ca. 3 kyr BP.