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Abstract:

Facies associations distinguished in the Caleta Olivia Member of the Cañadón Seco Formation, San Jorge Basin, reveal an ancient sandy multichannelled fluvial system with moderate sinuosity and well developed proximal (natural levee, splay) and distal (shallow ponds, backswamp) overbank deposits. A palynological assemblage was recovered from these sediments and dated as late Albian-Cenomanian. This is the first palynological dating of sediments of this age for this basin and Argentina. The pollen assemblage is characterized by primitive types of non-magnolioid angiosperms: Tricolpites minutus (Brenner) Dettmann, Nyssapollenites cf. squamosus Dettmann, Phimopollenites pannosus (Dettmann and Playford) Dettmann, Cupuliferoidaepollenites cf. parvulus (Groot and Penny) Dettmann, Rousea georgensis (Brenner) Dettmann. A humid, continental mild to warm climate is suggested for this region during the mid-Cretaceous. To the Cañadón Seco Formation (and its equivalents on the north flank of the basin and marginal areas) is assigned a late Albian-Cenomanian age; the uppermost section may be early Turonian in age. © 1994 Academic Press Limited.

Registro:

Documento: Artículo
Título:Palynology and alluvial facies from the mid-cretaceous of patagonia, subsurface of San Jorge Basin, Argentina
Autor:Archangelsky, S.; Bellosi, E.S.; Jalfin, G.A.; Perrot, C.
Filiación:CONICET-Museo Argentino de Ciencias Naturales B. Rivadavia, Av. Gallardo 470, 1405 Buenos Aires, Argentina
CONICET-Centro de Investigaciones en Recursos Geológicos, Velasco 847, 1414 Buenos Aires, Argentina
CONICET-Facultad Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, 1428 Buenos Aires, Argentina
ASTRA C.A.P.S.A., Tucumán 744, 1049 Buenos Aires, Argentina
Palabras clave:Angiosperms; Argentina; Calera Olivia Member; Cañadón Seco Formation; Late Albian-Cenomanian; Palaeoenvironments; Palynology; Santa Cruz; Stratigraphy; Subsurface; Albian; Cenomanian; Cretaceous; palaeoenvironment; palynology; stratigraphy; Argentina, Patagonia, San Jorge Basin
Año:1994
Volumen:15
Número:2
Página de inicio:127
Página de fin:142
DOI: http://dx.doi.org/10.1006/cres.1994.1006
Título revista:Cretaceous Research
Título revista abreviado:Cretaceous Res.
ISSN:01956671
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01956671_v15_n2_p127_Archangelsky

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Citas:

---------- APA ----------
Archangelsky, S., Bellosi, E.S., Jalfin, G.A. & Perrot, C. (1994) . Palynology and alluvial facies from the mid-cretaceous of patagonia, subsurface of San Jorge Basin, Argentina. Cretaceous Research, 15(2), 127-142.
http://dx.doi.org/10.1006/cres.1994.1006
---------- CHICAGO ----------
Archangelsky, S., Bellosi, E.S., Jalfin, G.A., Perrot, C. "Palynology and alluvial facies from the mid-cretaceous of patagonia, subsurface of San Jorge Basin, Argentina" . Cretaceous Research 15, no. 2 (1994) : 127-142.
http://dx.doi.org/10.1006/cres.1994.1006
---------- MLA ----------
Archangelsky, S., Bellosi, E.S., Jalfin, G.A., Perrot, C. "Palynology and alluvial facies from the mid-cretaceous of patagonia, subsurface of San Jorge Basin, Argentina" . Cretaceous Research, vol. 15, no. 2, 1994, pp. 127-142.
http://dx.doi.org/10.1006/cres.1994.1006
---------- VANCOUVER ----------
Archangelsky, S., Bellosi, E.S., Jalfin, G.A., Perrot, C. Palynology and alluvial facies from the mid-cretaceous of patagonia, subsurface of San Jorge Basin, Argentina. Cretaceous Res. 1994;15(2):127-142.
http://dx.doi.org/10.1006/cres.1994.1006