INVESTIGADORES
POZNER raul Ernesto
artículos
Título:
Pollen and spores from the type locality of Puesto Berrondo soil at the Río Salado, Buenos Aires Province, Argentina
Autor/es:
FERNÁNDEZ, C. A.; POZNER, R.
Revista:
Quaternary of South America and Antarctic Peninsula
Editorial:
A. A. Balkema
Referencias:
Lugar: Rotterdam; Año: 1989 p. 81 - 92
ISSN:
0168-6305
Resumen:
<!-- /* Style Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal {mso-style-parent:""; margin:0cm; margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:12.0pt; font-family:"Times New Roman"; mso-fareast-font-family:"Times New Roman";} @page Section1 {size:612.0pt 792.0pt; margin:70.85pt 3.0cm 70.85pt 3.0cm; mso-header-margin:36.0pt; mso-footer-margin:36.0pt; mso-paper-source:0;} div.Section1 {page:Section1;} --> Pollen and spores of three samples obtained at an exposure along the Río Salado have been studied. Samples belong to a sequence beginning with the Las Escobas formation (marine) over which a buried soil, the Puesto Berrondo Soil, has developed. At the top, alluvial sediments occur, on which the present soil develops. The pollen record shows a rich flora in this present soil level with fungi of the edaphic microflora, especially Papulaspora sp. Angiosperms of the grass steppe and fresh water algae are also present as well as Bryophyta such as Phaeoceros sp. The record shows impoverishment at the buried soil level indicating differential destruction due to diagenesis. The presence of fungi and fresh water algae suggests the same pedogenesis environment that defines a hydromorphic soil. The buried soil contains Dinoflagellates from the parental sediments.