Identificación de eventos estadiales e interestadiales mediante la caracterización sedimentológica, palinológica e isotópica del registro de la laguna grande (Sierra de Neila)
- J. Vegas 1
- B. Ruiz-Zapata 2
- A. Delgado 3
- A. Pérez-González 4
- 1 Instituto Geológico y Minero de España (IGME)
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2
Universidad de Alcalá
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- 3 Laboratorio de Isótopos Estables. Estación Experimental del Zaidín. CSIC
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4
Universidad Complutense de Madrid
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- Lario Gómez, Javier (coord.)
- Silva, Pablo G. (coord.)
Editorial: Escuela Técnica Superior de Ingenieros Industriales de Madrid ; Universidad Politécnica de Madrid
ISBN: 978-84-7484-201-2
Año de publicación: 2007
Páginas: 219-220
Tipo: Capítulo de Libro
Resumen
The sedimentary record of Laguna Grande (NW Iberian Range) accumulated and preserved fine laminated sediments (rhytmites and graded layers) and peat layers. This proglacial lake containsa 10-m long sedimentary sequence that covers about the last ~20,500 years Cal BP and starts with a sequence of graded sand layers of unknow age. Two main environmental and climatic scenarios can be identified according to high resolution sedimentary microfacies, δ13CTOC values and pollen content: (A) Interstadials/Interglacial - that reflect low water recharge, lower lake levels (peat growth) and a higher vegetation cover in watersheds. (B) Stadials – that are interpreted as periods of higher water recharge, higher lake levels and scarce vegetation cover in watershed