Palynology and alluvial facies from the mid-cretaceous of patagonia, subsurface of San Jorge Basin, Argentina

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 p...

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Detalles Bibliográficos
Autores principales: Archangelsky, Sergio, Bellosi, Eduardo Sergio
Publicado: 1994
Materias:
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
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01956671_v15_n2_p127_Archangelsky
http://hdl.handle.net/20.500.12110/paper_01956671_v15_n2_p127_Archangelsky
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_01956671_v15_n2_p127_Archangelsky
record_format dspace
spelling paper:paper_01956671_v15_n2_p127_Archangelsky2023-06-08T15:20:06Z Palynology and alluvial facies from the mid-cretaceous of patagonia, subsurface of San Jorge Basin, Argentina Archangelsky, Sergio Bellosi, Eduardo Sergio 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 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. Fil:Archangelsky, S. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Bellosi, E.S. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 1994 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01956671_v15_n2_p127_Archangelsky http://hdl.handle.net/20.500.12110/paper_01956671_v15_n2_p127_Archangelsky
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic 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
spellingShingle 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
Archangelsky, Sergio
Bellosi, Eduardo Sergio
Palynology and alluvial facies from the mid-cretaceous of patagonia, subsurface of San Jorge Basin, Argentina
topic_facet 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
description 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.
author Archangelsky, Sergio
Bellosi, Eduardo Sergio
author_facet Archangelsky, Sergio
Bellosi, Eduardo Sergio
author_sort Archangelsky, Sergio
title Palynology and alluvial facies from the mid-cretaceous of patagonia, subsurface of San Jorge Basin, Argentina
title_short Palynology and alluvial facies from the mid-cretaceous of patagonia, subsurface of San Jorge Basin, Argentina
title_full Palynology and alluvial facies from the mid-cretaceous of patagonia, subsurface of San Jorge Basin, Argentina
title_fullStr Palynology and alluvial facies from the mid-cretaceous of patagonia, subsurface of San Jorge Basin, Argentina
title_full_unstemmed Palynology and alluvial facies from the mid-cretaceous of patagonia, subsurface of San Jorge Basin, Argentina
title_sort palynology and alluvial facies from the mid-cretaceous of patagonia, subsurface of san jorge basin, argentina
publishDate 1994
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01956671_v15_n2_p127_Archangelsky
http://hdl.handle.net/20.500.12110/paper_01956671_v15_n2_p127_Archangelsky
work_keys_str_mv AT archangelskysergio palynologyandalluvialfaciesfromthemidcretaceousofpatagoniasubsurfaceofsanjorgebasinargentina
AT bellosieduardosergio palynologyandalluvialfaciesfromthemidcretaceousofpatagoniasubsurfaceofsanjorgebasinargentina
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