Cenozoic Palinspastic Reconstruction, Paleogeographtc Evolution and Hydrocarbon Setting of the Northern Margin of South America

Pindell, James; Higgs, Roger; Dewey, John

doi:10.2110/pec.98.58.0045

Cited by 86 publications

(159 citation statements)

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“…A second alternative is a marine flooding through the Venezuelan Llanos (Barinas-Apure Basin), where the Guardulio Member (Guafita Formation, OligoceneMiocene), which was deposited in fluviodeltaic environments, shows evidence of more marine conditions toward the top of the sequence (Ortega et al, 1987;Léxico Estratigráfico de Venezuela, 1996;Pindell et al, 1998). This formation is overlain by the fluvially dominated Parangula Formation (Léxico Estratigráfico de Venezuela, 1996).…”

Section: Genesis Of the Huesser Horizonmentioning

confidence: 99%

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Huesser Horizon: A Lake and a Marine Incursion in Northwestern South America During the Early Miocene

Gomez

Jaramillo

Parra

et al. 2009

PALAIOS

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The Cenozoic stratigraphic sequence in the foothills of the Eastern Cordillera of Colombia is mostly fluvial in nature and very thick (ϳ8000 m), but it contains very few mollusk-bearing horizons. Recent fieldwork discovered a well-preserved molluscan assemblage that occurs near the top of the Carbonera Formation (lower Miocene) in the central foothills of the Eastern Cordillera. This level, named the Huesser horizon, is laterally extensive and can be followed for tens of kilometers. The horizon is 10 m thick and was divided into eight levels, five of them highly fossiliferous. Most of the levels are dominated by the freshwater gastropod Sheppardiconcha, with lower abundances of the bivalves Anodondites and Mytilopsis. The top level is dominated by specimens from the bivalve family Arcidae. The taxonomic composition of the assemblage is similar to that of the Magdalena and Amazonas Basins during the early-to-middle Miocene. Paleoecologic, taphonomic, and palynological analyses indicate that the Huesser accumulated in a freshwater lake system, capped by a marine incursion. The development of a large lake and the subsequent marine event could be related to increasing subsidence coincident with eustatic sea-level rise that has been identified for the basin during the early Miocene.

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Section: Genesis Of the Huesser Horizonmentioning

confidence: 99%

“…Changes in configuration and two possible marine incursions are proposed based on the paleogeographic reconstructions of Pindell et al (1998) and Guzman and Fischer (2006). have favored extensive lacustrine-estuarine deposition in the Llanos Basin during the early and middle Miocene (Bayona et al, 2008).…”

Section: Huesser Horizon From the Miocene Of Colombiamentioning

confidence: 99%

Huesser Horizon: A Lake and a Marine Incursion in Northwestern South America During the Early Miocene

Gomez

Jaramillo

Parra

et al. 2009

PALAIOS

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“…This last interpretation is based on the strong uplift and erosion rates between Late Miocene (ca. 10 Ma) to present (Kohn et al, 1984;Pindell et al, 1998). Quaternary uplift ranges between ~0.7 and 5 mm/a (Audemard and Audemard, 2002;Wesnousky et al, 2012;Guzmán et al, 2013).…”

Section: Venezuelamentioning

confidence: 96%

Pleistocene Glaciations in the Northern Tropical Andes, South America (Venezuela, Colombia and Ecuador)

Angel¹,

Guzmán²,

Carcaillet³

2017

CIG

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“…In addition, the sandstones and gravels of the Chaguaramas Formation contain a heavy mineral suite characteristic of the Colombian Central Cordillera, and the clay mineralogy of the silt component of this formation indicates both a Colombian Central Cordilleran and a Venezuelan coastal range origin Wesselingh and Macsotay, 2006). Consequently, the sedimentological and paleontological records suggest that the Chaguaramas Formation could be considered as relict of 'Proto-Orinoco' delta Pindell et al, 1998;Wesselingh and Macsotay, 2006), discarding the possible draining of a major river system ('Proto-Orinoco') to the Maracaibo or Falcón Basin during the Early Miocene.…”

Section: Implications Of the 'Orinoco River Shifting' Hypothesismentioning

confidence: 98%

Cronología y geología de una asociación de mamíferos del Mioceno Temprano en el Norte de América del Sur, cerro La Cruz (Formación Castillo), Estado Lara, Venezuela: implicaciones para las hipótesis del ‘cambio del curso del río Orinoco’.

Rincón

Solórzano

Benammi

et al. 2014

Andgeo

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ABSTRACT.In general the geology of paleontological sites in Venezuela is poorly known. With the purpose of improving this knowledge we describe the geology of the Castillo Formation (Late Oligocene to Early Miocene) at Cerro La Cruz locality, in Lara state, Venezuela, that contains several records of vertebrate and invertebrate fauna. Lithologically, the Cerro La Cruz sequence is composed by alternating packages of siliciclastic and carbonate sediments, with a predominance of mudstone. The paleoenvironment is inferred as a mainly near-shore marine complex that could be associated with regressive and transgressive phases. Nevertheless, into the middle part of the Cerro La Cruz outcrops two levels containing at least six mammalian remains were found, confirming the early continental mammal assemblage in Venezuela. The continental vertebrate assemblage includes Xenarthra, Notoungulata and Litopterna mammals, fresh water fishes, the turtle Chelus, wood and leaves, allows us to interpret the paleoenvironment of the continental episodes of this locality as a mosaic composed of an humid forest and lowland savanna. Four isotopic dates using Strontium ( 87 Sr/ 86 Sr), from the Cerro La Cruz locality were obtained, which bracket of the sediments to between 17.21 to 19.27 Ma, confirming an Early Miocene age for this locality. Biochronologically, the mammalian assemblage so far recovered does not permit to assign this fauna to any of the recognized South American Land Mammal Ages, however the isotopic ages suggest affinities with a Pansantacrucian mammalian sub-cycle. Our interpretation of the geology at Cerro La Cruz shows no evidence for the presence of a major river system crossing over that zone during the Early Miocene and does not support the hypothesis of the possible draining of a 'Proto-Orinoco' river into Maracaibo or Falcón basin during the Early Miocene. Keywords: Early Miocene, Pansantacrucian, Castillo Formation, Venezuela. 508 Chronology and geology of an early MioCene MaMMalian asseMblage in north of south aMeriCa... RESUMEN. Cronología y geología de una asociación de mamíferos del MiocenoTemprano en el Norte de América del Sur, cerro La Cruz (Formación Castillo), estado Lara, Venezuela: implicaciones para las hipótesis del 'cambio del curso del río Orinoco'. En general los estudios geológicos detallados de las localidades paleontológicas de Venezuela son escasos. Con la finalidad de mejorar este conocimiento, se describe la geología de la Formación Castillo (Oligoceno Tardío a Mioceno Temprano) en afloramientos localizados en cerro La Cruz, estado Lara, Venezuela, la cual contiene reportes de una diversa fauna de vertebrados e invertebrados. Litológicamente la secuencia observada en cerro La Cruz está compuesta por una intercalación de paquetes siliciclásticos y carbonáticos, con predominio de lutita. El paleoambiente inferido para esta localidad es principalmente de un complejo marino-costero asociado a fases transgresivas y regresivas. Sin embargo, hacia la parte media de la sección del cerro La Cruz...

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Cenozoic Palinspastic Reconstruction, Paleogeographtc Evolution and Hydrocarbon Setting of the Northern Margin of South America

Cited by 86 publications

References 0 publications

Huesser Horizon: A Lake and a Marine Incursion in Northwestern South America During the Early Miocene

Huesser Horizon: A Lake and a Marine Incursion in Northwestern South America During the Early Miocene

Pleistocene Glaciations in the Northern Tropical Andes, South America (Venezuela, Colombia and Ecuador)

Cronología y geología de una asociación de mamíferos del Mioceno Temprano en el Norte de América del Sur, cerro La Cruz (Formación Castillo), Estado Lara, Venezuela: implicaciones para las hipótesis del ‘cambio del curso del río Orinoco’.

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