CICYTTP   12500
CENTRO DE INVESTIGACION CIENTIFICA Y DE TRANSFERENCIA TECNOLOGICA A LA PRODUCCION
Unidad Ejecutora - UE
artículos
Título:
Análisis fitolíticos del perfil sedimentario Los Loros, de la Formación El Palmar (Pleistoceno superior), en el Parque Nacional El Palmar, Entre Ríos, Argentina
Autor/es:
PATTERER N.I.; ZUCOL A.F.; BREA M.
Revista:
Acta geológica lilloana
Editorial:
Fundación Lillo
Referencias:
Lugar: S.M. de Tucumán; Año: 2014 vol. 26 p. 52 - 62
ISSN:
0567-7513
Resumen:
?Phytolith analysis from Los Loros profile, El Palmar Formation (Upper Pleistocene)
in El Palmar National Park, Entre Ríos, Argentina?. In the paper the phytolith assemblages
of El Palmar Formation (Upper Pleistocene) in Los Loros profile were described, located
in the El Palmar National Park, Entre Ríos, Argentina. The sedimentary samples was obtained
following the stratigraphy of profile, were processed by conventional methodology for obtaining
the siliceous microremains adjusting the same for processing samples of fluvial origin.
The phytolith assemblages were defined by the presence of non-diagnostic phytolith types, for
example elongated, fan shaped, polyhedral, point shaped of Poaceae affinity, as well as bilobate
of panicoid type, globulars of arecoids affinity mainly of type spiny spherical surface, accompanied
by truncated cones to the Danthonioideae affinity, low presence of oblong and
crenate type of pooids affinity, and those derived from the conduction tissue. Moreover, the
spicules of sponges, chrysostomatacea estomatocysts and diatoms were present in most of
these associations. Regarding the degree of conservation of the morphotypes showed two
clearly differentiated populations. The larger phytoliths had worn and porous surface and
transportation signs, and another in which the smaller phytoliths showed no such signs. The
record describes a warm and humid paleoflora for this sedimentary sequence.
Keywords: Phytoliths, El Palmar Formation, Upper Pleistocene, El Palmar National