Microbial structures in La Playa playa-lake (Bujaraloz, NE Spain)
DOI:
https://doi.org/10.55407/geogaceta100779Keywords:
microbial mats, petees, Bujaraloz, La PlayaAbstract
We describe the presence of microbial mats in La Playa, whose presence influences the formation of certain structures that appear on its surface. These structures, known as petees, can be classified according to their morphology and origin. They have been classified into three different types and can be formed by the action of the wind on the poorly developed microbial mats (alpha-petees), by the joint action of the accumulation of gases and evaporitic precipitation on the mats (beta-petees) and by the lateral expansion produced by crystalline growth (gamma-petees). The petees are distributed according to the variations in the water level that floods the playa lake in the rainy seasons. In such way, beta-petees predominate in the NW, where the water sheet evaporates earlier, and alpha-petees predominate in the SE, where the water accumulates for longer periods of time. Gamma-petees are located in the intermediate zone, where the presence of the water sheet is more variable. During the dry seasons, the playa lake dries out completely, leaving the microbial mat exposed to evaporitic precipitation processes.
References
Aref, M.A.M., Basyoni, M.H. and Bachmann, G.H. (2014) Facies, 60, 371-388. https://doi.org/10.1007/s10347-013-0379-8
Castañeda, C. y Herrero, J. (2005) Journal of Hydrology, 310, 95-110. https://doi.org/10.1016/j.jhydrol.2004.12.007
García Vera, M.A. and Castañeda del Álamo, C. (2005) Naturaleza Aragonesa, 14, 52-58.
Gavish, E., Krumbein, W.E. and Halevy, J. (1985) In: Hypersaline Ecosystems (G. M. Friedman y W.E. Krumbein, Eds.). Springer-Verlag, 186-217. https://doi.org/10.1007/978-3-642-70290-7_12
Gutiérrez., F. and Gutiérrez, M. (2014) In: Landscapes and Landforms of Spain (F. Gutiérrez y M. Gutiérrez, Eds.) Springer, 145- 153. https://doi.org/10.1007/978-94-017-8628-7
Noffke, N. (2010) In: Geobiology: Microbial Mats in Sandy Deposits from the Archean Era to Today. Springer. https://doi.org/10.1007/978-3-642-12772-4
Ortega, M., Sánchez, E., Gutiérrez, C., Molina, M.A. and López-Franca, N. (2022) International Journal of Climatology, 43, 1016-1033. https://doi.org/10.1002/joc.7860
Ramírez Merino, J.I., Simón, J.L., González, J.C., García Villar, A. y Hernández Samaniego, A. (1991). Mapa Geológico de España 1:50000, hoja nº413 (Gelsa) y memoria. IGME. 78 p.
Reineck, H-E., Gerdes, G., Claes, M., Dunajtschik, K., Riege, H. and Krumbein, W.E. (1990) In: Sediments and Environmental Geochemistry (D. Heiling, P. Rothe, U. Förstner y P. Stoffers, Eds). Springer-Verlag. 254-276. https://doi.org/10.1007/978-3-642-75097-7_15
Rodó, X., Baert, E. and Comín, F.A., (1997). Climate Dynamics 13, 275-284. https://doi.org/10.1007/s003820050165
Salvany, J.M., García Vera, M.A. y Samper, J. (1995) Acta Geológica Hispánica, 30, 31-50.
Schieber, J., Bose, P.K., Eriksson, P.G., Banerjee, S., Sarkar, S., Altermann, W. and Catuneanu, O. (2007) Atlases in Geoscience 2. Atlas of Microbial Mat Features Preserved within the Siliciclastic Rock Record. Elsevier, Amsterdam, 312p.
Solà, J., Costa, J.M., Olivé, A., Simón, J.L., Arlegui, L., Liesa, C., González Llamazares, J.C., García Villar, A. y Hernández Samaniego, A. (1992). Mapa Geológico de España 1:50000, hoja nº414 (Bujaraloz) y memoria. IGME. 76 p.
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