Titre du document / Document title

Palaeobiogeography of the Holocene molluscan fauna from northeastern Buenos Aires province, Argentina: its relation to coastal evolution and sea level changes

Auteur(s) / Author(s)

AGUIRRE M. L. ;

Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)

Museo cienc. naturales, div. paleozoología invertebrados, 1900 La Plata, ARGENTINE

Résumé / Abstract

In northeastern Argentina the Holocene (ca. 2500-6000 ¹⁴C yr B.P.) benthic marine molluscan fauna from the Cerro de la Gloria Member of the Las Escobas Formation represents a higher sea-level stand (approximately 4-5 m above m.s.l.) than the present one and belongs to an original shallow water environment. Most of this fauna (48%) belongs to the Argentine Zoogeographic Province while part of it (12%) is shared with the Magellanian Province. The rest of the taxa are cosmopolitan (5%) or belong to the Caribbean, Antillean and Brazilian provinces (35%). The latter are considered stenothermic warm-water indicators which in the present northeastern marine shelf of Argentina are scarcer (6-14%), most of them ranging from the Antilles to southern Brazil or northeastern Uruguay

Revue / Journal Title

Palaeogeography, palaeoclimatology, palaeoecology   ISSN 0031-0182   CODEN PPPYAB 

Source / Source

1993, vol. 102, n^o1-2, pp. 1-26 (3 p.)

Langue / Language

Anglais

Editeur / Publisher

Elsevier, Amsterdam, PAYS-BAS  (1965) (Revue)

Mots-clés anglais / English Keywords

Buenos Aires Province ; Argentina ; Holocene ; biogeography ; eustacy ; mollusks ; benthonic taxa ; marine environment ; paleoclimatology ; C-14 ; absolute age ; coastal environment ; faunal provinces ; shallow-water environment ; Brazil ; West Indies ; South America ; Quaternary ;

Mots-clés français / French Keywords

Province Buenos Aires ; Argentine ; Holocène ; Biogéographie ; Eustatisme ; Faune mollusque ; Taxon benthique ; Milieu marin ; Paléoclimat ; C 14 ; Datation ; Milieu littoral ; Province faunistique ; Milieu eau peu profonde ; Brésil ; Antilles ; Formation Las Escobas ; Amérique du Sud ; Quaternaire ;

Mots-clés espagnols / Spanish Keywords

Provincia Buenos Aires ; Argentina ; Holoceno ; Biogeografía ; Eustasia ; Fauna molusco ; Taxón bentónico ; Medio marino ; Paleoclima ; C 14 ; Fechado ; Medio litoral ; Provincia faunística ; Medio agua poco profunda ; Brasil ; Antillas ; America del sur ; Cuaternario ;

Localisation / Location

INIST-CNRS, Cote INIST : 12351, 35400003759074.0010