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GEOREF RECORD

Late Maastrichtian dinoflagellate cysts from the Cerro Butalo section, southern Mendoza Province, Argentina

Mercedes B. Pramparo and Oscar H. Papu
Late Maastrichtian dinoflagellate cysts from the Cerro Butalo section, southern Mendoza Province, Argentina
Journal of Micropalaeontology (April 2006) 25, Part 1: 23-33

Abstract

The Late Cretaceous Atlantic transgression in southern South America is recorded in western Argentina in the upper part of the Malargue Group. The Cerro Butalo section outcrops in the south of Mendoza Province and comprises sediments attributable to the Jaguel and Roca formations. Well-preserved palynological associations were recovered from this section. Only the marine associations--dinoflagellate cysts, acritarchs and green algae--are considered in this article. A Late Maastrichtian age is suggested for the Roca and Jaguel formations based on the presence of Deflandrea galeata and Disphaerogena carposphaeropsis in the lower part of the section and Glaphyrocysta perforata in the upper part of the section and the absence of any Danian cosmopolitan markers. Variations in dinoflagellate cyst species diversity throughout the section permit recognition of two intervals that are probably related to different palaeoenvironmental conditions connected with episodes of sea-level fluctuation.


ISSN: 0262-821X
EISSN: 2041-4978
Serial Title: Journal of Micropalaeontology
Serial Volume: 25, Part 1
Title: Late Maastrichtian dinoflagellate cysts from the Cerro Butalo section, southern Mendoza Province, Argentina
Affiliation: Consejo de Investigaciones Cientificas y Tecnicas, Unidad de Paleopalinologia, Mendoza, Argentina
Pages: 23-33
Published: 200604
Text Language: English
Publisher: British Micropalaeontological Society, London, United Kingdom
References: 58
Accession Number: 2006-079589
Categories: Stratigraphy
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. strat. col., 4 plates, 1 table, sketch map
S35°49'60" - S35°49'60", W69°40'00" - W69°40'00"
Country of Publication: United Kingdom
Secondary Affiliation: GeoRef, Copyright 2018, American Geosciences Institute. Reference includes data from The Geological Society, London, London, United Kingdom
Update Code: 200622
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