Artículo
Late Burdigalian (Miocene) age for pectinids (Mollusca-Bivalvia) from the Pirabas Formation (northern Brazil) derived from Sr-isotope (87Sr/86Sr) data
Martinez, Sergio; Feijó Ramos, María Inês; McArthur, John M.; del Río, Claudia Julia
; Thirlwall, Matthew F.
Fecha de publicación:
04/2017
Editorial:
E Schweizerbartsche Verlags
Revista:
Neues Jahrbuch für Geologie und Palaontologie - Abhandlungen
ISSN:
0077-7749
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
The faunas of the highly fossiliferous Pirabas Formation belong to the southern part of the biogeographical unit known as "Neogene Tropical America". This unit developed prior to the closure of the Central American Seaway by the Isthmus of Panama. Until now, the age of the Pirabas Formation was inferred only from biostratigraphy. The Sr-isotope (87Sr/86Sr) values of pectinid shells from the Pirabas Formation show that most parts of this unit were deposited during the Late Burdigalian (about 16-17 Ma ). This result does not contradict biostratigraphic data and it constrains the age of the Pirabas Formation more tightly than do previous estimates of age, it for future, more precise biogeographical comparisons.
Palabras clave:
87SR/86 SR
,
BRAZIL
,
MIOCENE
,
PECTINOIDEA
,
PIRABAS FORMATION
,
SIS
,
STRONTIUM
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Licencia
Identificadores
Colecciones
Articulos(MACNBR)
Articulos de MUSEO ARG.DE CS.NAT "BERNARDINO RIVADAVIA"
Articulos de MUSEO ARG.DE CS.NAT "BERNARDINO RIVADAVIA"
Citación
Martinez, Sergio; Feijó Ramos, María Inês; McArthur, John M.; del Río, Claudia Julia; Thirlwall, Matthew F.; Late Burdigalian (Miocene) age for pectinids (Mollusca-Bivalvia) from the Pirabas Formation (northern Brazil) derived from Sr-isotope (87Sr/86Sr) data; E Schweizerbartsche Verlags; Neues Jahrbuch für Geologie und Palaontologie - Abhandlungen; 284; 1; 4-2017; 57-64
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