IANIGLA   20881
INSTITUTO ARGENTINO DE NIVOLOGIA, GLACIOLOGIA Y CIENCIAS AMBIENTALES
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
SYSTEMATIC PALEOBOTANY FROM THE AGUA DE LA ZORRA FORMATION (UPPER TRIASSIC) MENDOZA, ARGENTINA
Autor/es:
ADRIANA C. MANCUSO; EDUARDO G. OTTONE; TOMÁS E. PEDERNERA; CECILIA A. BENAVENTE
Lugar:
Paraná
Reunión:
Simposio; XVII Simposio de Paleobotánica y Palinología; 2018
Institución organizadora:
Asociación Latinoamericana de Paleobótanica y Palinología
Resumen:
The Triassic Cacheuta Group crops out in the North-west of Mendoza Province and includes from base to top, four units: Paramillos, Agua de la Zorra, Portezuelo Bayo, and Los Colorados formations. The Agua de la Zorra FormaVon is dominated by bituminous shales and marls, and subordinated intercalaVons of fine-grained sandstones and mudstones. Few levels of peperitic and olivine basalts are interbedded in the shale facies. The depositional system is interpreted as fluviolacustrine with episodic subaqueous incursions of lava. The age of this unit was referred to the Middle to Late Triassic. The aim of this contribution is to analyze the new plant material found in the Agua de la Zorra FormaVon from a systematic and taxonomic point of view. The remains of plant megafossils were collected systematically throughout the secVon at Paramillos de Uspallata. Plant remains were referred to 16 species, included in six taxonomic groups and one insertae sedis taxon (IANIGLA-PB 672-739). Equisetaceae (Neocalamites sp.), Osmundaceae (Cladophlebis mesozoica and C. mendozaensis.), Corystospermales (Dicroidium argentum, D. crassum, D. odontopteroides, Johnstonia coriacea, J. sterlzeriana, Xylopteris argen0na, X. elongata, Zuberia feistmanteli and Z. zuberi), Cycadales (Taeniopteris sp.), Ginkgoales (Sphenobaiera sp.), Voltziales (Heidiphyllum elongatum), Podocarpaceae (Rissikia media), and insertae sedis leaves Lingufolium cf. patagonicum, were recognized. The material studied increases in 12 taxa the existing record enriching our knowledge of the paleoflora of the Agua de la Zorra FormaVon.