TAPHONOMY, CRONOSTRATIGRAPHY AND PALEOCEANOGRAPHIC IMPLICATIONS AT TURBIDITE OF EARLY PALEOGENE (VERTIENTES FORMATION), CUBA

This study focuses on the taphonomy, paleontology, and invertebrate diversity of the Upper Paleocene to Lower Eocene, turbidite deposits of Vertientes Formation, northwest of Ciego de Ávila, Central Cuba. The section exposed is stratified with detritic rocks, heterogeneous litoclasts and bioclasts....

Full description

Bibliographic Details
Published in:Revista Geológica de América Central
Main Authors: Menéndez, Leidy, Rojas-Consuegra, Reinaldo, Villegas-Martín, Jorge, López, Rafael A.
Format: Article in Journal/Newspaper
Language:English
Published: Universidad de Costa Rica 2012
Subjects:
fossil
early paleogene
taphonomic
turbidite
vertientes formation
fósil
paleógeno temprano
tafonómico
turbidita
formación vertientes
Rocas
Depósito
Ciego
Planktonic foraminifera
Online Access:https://revistas.ucr.ac.cr/index.php/geologica/article/view/1905
https://doi.org/10.15517/rgac.v0i45.1905
Description
Summary:This study focuses on the taphonomy, paleontology, and invertebrate diversity of the Upper Paleocene to Lower Eocene, turbidite deposits of Vertientes Formation, northwest of Ciego de Ávila, Central Cuba. The section exposed is stratified with detritic rocks, heterogeneous litoclasts and bioclasts. The fossil assemblage includes bivalve mollusks, gastropods, equinoderms, corals, crustaceans, icnofossils, orbitoidal foraminifera, ostracods and radiolarians. Age of the deposit was determined by the accumulated planktonic foraminifera assemblage. The taphonomic charac- terization of the conserved entities suggests processes such as mineralization, recrystallization, sedimentary infilling, disarticulation, fragmentation, encrustation and others, indicating that these conserved entities are alocthonous and have suffered intense processes of transport, taphonomic reelaboration and resedimentation. The depositional sequence was accumulated in association with a slope, in a bathyal environment, influenced by strong precipitations, typical of tropical to subtropical latitudes. Este trabajo se enfoca en el estudio tafonómico y paleontológico de invertebrados en la turbidita de edad Paleoceno Superior - Eoceno Inferior, perteneciente a la Fm Vertientes, en Ciego de Ávila, Cuba Central. La sección estratigráfica está constituida por rocas interestratificadas detríticas, con litoclastos y bioclastos heterogéneos. Se iden- tificaron entidades conservadas de moluscos bivalvos, gastrópodos, equinodermos, corales, briozoos, fragmentos de crustáceos e icnofósiles, y abundantes invertebrados pequeños: macroforaminíferos, ostrácodos y radiolarios. Además, la edad del depósito se determinó con la asociación acumulada de foraminíferos planctónicos. La caracterización ta- fonómica de la asociación conservada permitió identificar procesos de mineralización, recristalización, rellenamiento, desarticulación, fragmentación, encostramiento, y otros, sugiriendo que la mayoría de los elementos registrados son alóctonos y que han sufrido ...

Similar Items