Open AccessEl paleolago de La Larri (Valle de Pineta, Pirineos): significado en el contexto del último máximo glaciar en el Pirineo
Author(s) -
Ángel Salazar,
María Pilar Mata-Campo,
Maria Teresa Rico-Herrero,
Blas L. ValeroGarcés,
Belén OlivaUrcia,
P. Ibarra,
Félix Rubio,
Grupo Horda
Publication year - 2013
Publication title -
cuadernos de investigación geográfica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.537
H-Index - 20
eISSN - 1697-9540
pISSN - 0211-6820
DOI - 10.18172/cig.2001
Subject(s) - geology , outcrop , sedimentary rock , structural basin , glacial period , radiocarbon dating , national park , geomorphology , archaeology , paleontology , sequence (biology) , humanities , geography , art , biology , genetics
The unique geological framework of the “los Llanos de La Larri” (Ordesa-Monte Perdido National Park) facilitated the genesis of a relevant juxtaglacial sedimentary record during the last glacial phase in the central Pyrenees. In this study we conducted a geomorphological and outcrop survey, an electric tomography study and the definition of the main sedimentological units by means of the study of 3 cores up to 17 m long. The combined study of surface and underground data has allowed us to define a paleolacustrine sedimentary sequence more than 40 m thick and the geometry and nature of the units of the infilling sequence. Radiocarbon dating indicate that the minimum age of this deposit is 35 ky (BP) at 17 m depth, and the infilling of the basin ends at 11 ky BP.