Journal ArticleDOI
Middle Miocene closure of the Central American Seaway
Camilo Montes,Agustín Cardona,Carlos Jaramillo,Andrés Pardo,J. C. Silva,Victor A. Valencia,Carolina Ayala,Lina C. Pérez-Angel,L. Rodriguez-Parra,V. Ramirez,H. Niño +10 more
TLDR
It is contended that a uniquely Panamanian Eocene detrital zircon fingerprint is pronounced in middle Miocene fluvial and shallow marine strata cropping out in the northern Andes but is absent in underlying lower Miocene and Oligocene strata; the Central American Seaway had vanished by that time.Abstract:
Uranium-lead geochronology in detrital zircons and provenance analyses in eight boreholes and two surface stratigraphic sections in the northern Andes provide insight into the time of closure of the Central American Seaway. The timing of this closure has been correlated with Plio-Pleistocene global oceanographic, atmospheric, and biotic events. We found that a uniquely Panamanian Eocene detrital zircon fingerprint is pronounced in middle Miocene fluvial and shallow marine strata cropping out in the northern Andes but is absent in underlying lower Miocene and Oligocene strata. We contend that this fingerprint demonstrates a fluvial connection, and therefore the absence of an intervening seaway, between the Panama arc and South America in middle Miocene times; the Central American Seaway had vanished by that time.read more
Citations
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Journal ArticleDOI
Formation of the Isthmus of Panama
Aaron O'Dea,Harilaos A. Lessios,Anthony G. Coates,Ron I. Eytan,Sergio A. Restrepo-Moreno,Sergio A. Restrepo-Moreno,Alberto Luis Cione,Laurel S. Collins,Laurel S. Collins,Alan de Queiroz,David W. Farris,Richard D Norris,Robert F. Stallard,Robert F. Stallard,Michael O. Woodburne,Orangel Aguilera,Marie-Pierre Aubry,William A. Berggren,Ann F. Budd,Mario Alberto Cozzuol,Simon E. Coppard,Herman Duque-Caro,Seth Finnegan,Germán Mariano Gasparini,Ethan L. Grossman,Kenneth G. Johnson,Lloyd D Keigwin,Nancy Knowlton,Egbert Giles Leigh,Jill S. Leonard-Pingel,Peter B. Marko,Nicholas D. Pyenson,P.G. Rachello-Dolmen,P.G. Rachello-Dolmen,Esteban Soibelzon,Leopoldo Héctor Soibelzon,Jonathan A. Todd,Geerat J. Vermeij,Jeremy B. C. Jackson,Jeremy B. C. Jackson,Jeremy B. C. Jackson +40 more
TL;DR: An exhaustive review and reanalysis of geological, paleontological, and molecular records converge upon a cohesive narrative of gradually emerging land and constricting seaways, with formation of the Isthmus of Panama sensu stricto around 2.8 Ma.
Journal ArticleDOI
Biological evidence supports an early and complex emergence of the Isthmus of Panama
Christine D. Bacon,Christine D. Bacon,Daniele Silvestro,Carlos Jaramillo,Brian Tilston Smith,Prosanta Chakrabarty,Alexandre Antonelli +6 more
TL;DR: It is shown that biotic migrations across the Isthmus of Panama began several million years earlier than commonly assumed, indicating that the dramatic biotic turnover associated with the Great American Biotic Interchange was a long and complex process that began as early as the Oligocene–Miocene transition.
Journal ArticleDOI
Amazonia is the primary source of Neotropical biodiversity.
Alexandre Antonelli,Alexander Zizka,Fernanda Carvalho,Ruud Scharn,Christine D. Bacon,Daniele Silvestro,Daniele Silvestro,Fabien L. Condamine,Fabien L. Condamine +8 more
TL;DR: It is found that there has been extensive interchange of evolutionary lineages among different regions and biomes, over the course of tens of millions of years, and Amazonia stands out as the primary source of diversity, which can be mainly explained by the total amount of time Amazonian lineages have occupied the region.
Journal ArticleDOI
Phylogenetics, classification, and biogeography of the treefrogs (Amphibia: Anura: Arboranae)
TL;DR: A phylogenetic analysis of sequences from 503 species of hylid frogs and four outgroup taxa resulted in 16,128 aligned sites of 19 genes that resulted in a new phylogenetic tree of treefrogs, which has a conservative new classification of Arboranae.
Journal ArticleDOI
Sedimentary record of Andean mountain building
TL;DR: In this paper, the Andean orogeny is reconstructed by integrating regional stratigraphic relationships with data on sediment accumulation, provenance, paleodrainage, and deformation timing.
References
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Journal ArticleDOI
Use of U–Pb ages of detrital zircons to infer maximum depositional ages of strata: A test against a Colorado Plateau Mesozoic database
TL;DR: In this paper, the authors compare the U-Pb ages of detrital zircons in 58 samples of Mesozoic sandstone from the Colorado Plateau and adjacent areas with depositional ages known independently from biostratigraphy.
Journal ArticleDOI
Neogene stratigraphy, paleoceanography and paleobiogeography in northwest South America and the evolution of the Panama seaway
TL;DR: The Atrato basin in the pacific coastal region of NW South America (Colombia) exhibits stratigraphic and biostratigraphic characteristics similar to other Neogene Pacific coastal basins of southern Central America and northern South America.
Journal ArticleDOI
Mammalian evolution and the great american interchange.
TL;DR: A reciprocal and apparently symmetrical interchange of land mammals between North and South America began about 3 million years ago, after the appearance of the Panamanian land bridge and the number of families in South America rose from 32 before the interchange to 39 after it began, and then back to 35 at present.
Journal ArticleDOI
The Geology of the Darien, Panama, and the late Miocene-Pliocene collision of the Panama arc with northwestern South America
Anthony G. Coates,Laurel S. Collins,Marie-Pierre Aubry,William A. Berggren,William A. Berggren +4 more
TL;DR: The geology of the Darien province of eastern Panama is presented through a new geologic map and detailed biostratigraphic and paleobathymetric analysis of its Upper Cretaceous to upper Miocene sediments as discussed by the authors.
Journal ArticleDOI
Evidence for middle Eocene and younger land emergence in central Panama: Implications for Isthmus closure
Camilo Montes,Camilo Montes,Agustín Cardona,Agustín Cardona,R.R. McFadden,Sara Morón,Carlos A. Silva,Sergio A. Restrepo-Moreno,Sergio A. Restrepo-Moreno,Diego A. Ramírez,Natalia Hoyos,J. Wilson,David W. Farris,Germán Bayona,Carlos Jaramillo,Victor A. Valencia,Jonathan R. Bryan,José-Abel Flores +17 more
TL;DR: In this paper, the Isthmus of Panama is shown to have been an uninterrupted chain above sea level from late Eocene until at least late Miocene times using geochemical and thermochronological data.
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