Facies sedimentarias de la laguna kárstica de La Parra (Cuenca) durante los últimos 1600 años cal. BP
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Abstract
El análisis sedimentario y geoquímico llevado a cabo en los sondeos del
lago kárstico de La Parra (Cordillera Ibérica, Cuenca) ilustra el comienzo de
la sedimentación en la cuenca hace 1.600 años y su evolución sedimentaria,
que principalmente está controlada por variaciones en la descarga detrítica
hacia el lago. Un total de 11 facies sedimentarias han sido descritas,
agrupadas en 3 unidades litoestratigráficas, compuestas en su mayor parte
por carbonatos bandeados y masivos de origen clástico y algunas capas
con laminaciones. La presencia de facies litorales más gruesas durante la
Baja Edad Media y facies finamente laminadas durante la Era Moderna sugieren
unos niveles del lago más bajos durante la Anomalía Climática Medieval
y más altos durante la Pequeña Edad del Hielo
The sedimentary and geochemical analyses performed in La Parra karstic lake sediment cores (Iberian Range, Cuenca) illustrate the onset of lacustrine sedimentation about 1.600 years ago and a depositional evolution mostly controlled by fluctuations in detrital input to the lake. A total of 11 sedimentary facies were recognized, grouped in 3 lithostratigraphic units, and mainly composed by banded and massive clastic carbonates and a few fine laminated layers. Presence of coarser littoral facies during the Low Middle Age and finely laminated during the Modern Ages suggest lower lake levels during the Medieval Climate Anomaly and higher during the Little Ice Age
The sedimentary and geochemical analyses performed in La Parra karstic lake sediment cores (Iberian Range, Cuenca) illustrate the onset of lacustrine sedimentation about 1.600 years ago and a depositional evolution mostly controlled by fluctuations in detrital input to the lake. A total of 11 sedimentary facies were recognized, grouped in 3 lithostratigraphic units, and mainly composed by banded and massive clastic carbonates and a few fine laminated layers. Presence of coarser littoral facies during the Low Middle Age and finely laminated during the Modern Ages suggest lower lake levels during the Medieval Climate Anomaly and higher during the Little Ice Age







