Palynostratigraphy of Upper Paleozoic Sequences in Central-Western Argentina

Césari, Silvia N.; Gutiérrez, Pedro Raúl

doi:10.2113/0240113

Cited by 62 publications

(87 citation statements)

References 38 publications

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“…Several palynological associations comparable to those analyzed here have been described for central western Argentina successions. The palynological content of the FA 1, FA 2, FA 3, and FA 4 are equivalent to those included in the Subzones A and B of the DM Biozone defined for the Carboniferous of Argentina (Césari and Gutiérrez, 2001). Both subzones were characterized by the presence of monosaccate pollen grains and the appearance of Protohaploxypinus spp.…”

Section: Palynological Results and Comparisonsmentioning

confidence: 99%

“…García (1996) analyzed palynological assemblages from the upper section of the El Imperial Formation and identified taeniate pollen such as Protohaploxypinus spp., Pakhapites fusus, Hamiapollenites fusiformis and Vittatina sp. All these palynofloras, were included in the FS Biozone (Césari and Gutiérrez, 2001) and are associated with plant remains of the Gangamopteris flora (Archangelsky and Cúneo, 1984;Césari et al, 2007).…”

Section: Palynological Results and Comparisonsmentioning

confidence: 99%

“…Correlation of the main stratigraphic units bearing palynological assemblages mentioned in the text. Palynological biozones are based on Césari and Gutiérrez (2001). Radiometric ages are based on Gulbranson et al (2010).…”

Section: Age and Discussionmentioning

confidence: 99%

“…The age of this biozone was originally considered early Cisuralian (Césari and Gutiérrez, 2001), but recently Césari et al (2011) proposed its possible beginning in the latest Pennsylvanian. Some species present in this facies association, that usually were considered markers of Carboniferous-Permian in Gondwana include: Converrucosisporites confluens, Vittatina spp., Pakhapites fusus, among others.…”

Section: Age and Discussionmentioning

confidence: 99%

“…The palynoflora P(1a) from the lower part of the Tupe Formation was characterized by Vergel (2008) Vergel (2008) referred this assemblage to the DM Biozone (Césari and Gutiérrez, 2001) and assigned a late Carboniferous age. Vergel (2008) noted that all these species are common with other associations of the Tupe Formation, and equivalent units, in other localities.…”

Section: Previous Palynological Studiesmentioning

confidence: 99%

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Afloramientos carboníferos en la quebrada La Herradura, Provincia de San Juan (oeste de Argentina), revisados: edad de las transgresiones.

Loinaze

Limarino

Césari³

2014

Andgeo

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ABSTRACT. At the outcrops of the Tupe Formation in the La Herradura Creek, San Juan Province, two transgressive events are recorded, which range from few meters to tens of meters in thickness. These strata correspond to the stratotype of the faunal Tivertonia jachalensis-Streptorhynchus inaequiornatus Biozone. An evaluation of the timing of the two marine transgressions is made on the basis of palynological assemblages and available radiometric ages. A short-lived transgression is recorded in the latest Bashkirian-early Moscovian, and then a substantial sea level fall took place forming an irregular incision surface. Later, a major high eustatic sea-level occurred during the middle Moscovian resulting in a more important marine ingression. The palynological assemblages associated to the older transgressive event indicate the presence of the Raistrickia densa-Convolutispora muriornata (DM) Biozone (Subzone B). Palynofloras referred to the Subzone C of the DM Biozone characterize the strata of the younger transgression that also bear marine fauna of the Tivertonia jachalensis-Streptorhynchus inaequiornatus Biozone. Correlations with other Pennsylvanian outcrops in the region give support to the stratigraphic scheme here proposed. Keywords: Pennsylvanian, Argentina, Transgressions, Palynology. RESUMEN. Afloramientos carboníferos en la quebrada La Herradura, provincia de San Juan (oeste de Argentina), revisados: edad de las transgresiones. En los afloramientos de la Formación Tupe en la quebrada de La Herradura, provincia de San Juan, se registran dos eventos transgresivos, cuya magnitud varía desde unos pocos metros a decenas de metros de espesor. Estos estratos corresponden al estratotipo de la biozona faunística Tivertonia jachalensis-Streptorhynchus inaequiornatus. En esta contribución se presenta una evaluación y ajuste de la edad de las dos transgresiones marinas, sobre la base de las asociaciones palinológicas y las dataciones radiométricas disponibles. Una transgresión de corta duración se registró en el Bashkiriano tardío-Moscoviano temprano, a la que siguió una sustancial caída del nivel del mar, y originó una superficie de incisión irregular. Posteriormente, significativas condiciones de mar alto se produjeron durante el Moscoviano medio, lo que resultó en una más importante ingresión marina. Las asociaciones palinológicas relacionadas con el evento más antiguo pueden ser asignadas a la Subzona B de la Biozona Raistrickia densa-Convolutispora muriornata (DM). Palinofloras referidas a la Subzona C de la Biozona DM caracterizan los estratos de la transgresión más joven, donde también se reconoce la fauna marina de la Biozona Tivertonia jachalensisStreptorhynchus inaequiornatus. Las correlaciones con otros afloramientos pennsylvanianos en la región dan soporte al esquema estratigráfico aquí propuesto.

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Section: Palynological Results and Comparisonsmentioning

confidence: 99%

Section: Palynological Results and Comparisonsmentioning

confidence: 99%

Section: Age and Discussionmentioning

confidence: 99%

Section: Age and Discussionmentioning

confidence: 99%

Section: Previous Palynological Studiesmentioning

confidence: 99%

See 3 more Smart Citations

Afloramientos carboníferos en la quebrada La Herradura, Provincia de San Juan (oeste de Argentina), revisados: edad de las transgresiones.

Loinaze

Limarino

Césari³

2014

Andgeo

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Çakraz Formation, Çamdağ area, NW Turkey: early/mid‐Permian age, Rotliegend (Germany) and Southern Alps (Italy) equivalent—a stratigraphic re‐assessment via palynological long‐distance correlation

Stolle

2014

Geological Journal

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The palynological record from the Permian part of the Çakraz Formation from the Çamdağ area of NW Turkey has been investigated in order to obtain a more precise age assessment than achieved in previous studies. The 'Late Permian' age and a possible age range beginning in the Roadian (mid Permian) were discussed before for sections of palynomorph-bearing strata occurring within the formation. These deposits are now assigned to the late Cisuralian/Guadalupian and considered to be not older than early Kungurian, and not younger than Capitanian. The new age assessment was conducted via a long-distance, intercontinental palynostratigraphic correlation from NW Turkey to South America, where results of radiometric datings were linked to some siliciclastic sections by absolute ages to the chronostratigraphy. Common conspicuous taxa in pollen-dominated assemblages from both regions are Lueckisporites and Vittatina such as Lueckisporites virkkiae, L. latisaccus, L. stenotaeniatus, Vittatina corrugata, V. subsaccata and V. wodehousei. These species co-occur in strata of the northern as well as southern palaeohemisphere settings (NW Turkey and S America). Thus, Lueckisporites latisaccus, L. stenotaeniatus and Vittatina corrugata are, as well as L. virkkiae or V. subsaccata, considered as being cosmopolitan.Due to the more precise palynological dating of part of the Çakraz Formation and surrounding deposits they are here broadly correlated with Permian continental successions from the Southern Alps, Italy, including the Val Daone Conglomerate and the Verrucano Lombardo/Val Gardena Sandstone (Gröden) red beds, and the Rotliegend deposits of Germany. These results support some earlier views regarding the age and stratigraphic equivalences with European deposits. The new age for the Çakraz Formation also supports recent considerations as middle Permian (part Guadalupian), and as Cisuralian for the lower parts of the formation, such as the fossil-bearing section with plants and tetrapod traces further east in NW Turkey, where the unit also crops out.

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Progress in the Gondwanan Carboniferous–Permian palynology and correlation of the Nilawahan Group of the Salt Range, Pakistan: A brief review

Jan

2014

J Earth Syst Sci

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This paper comprises of two sections. The first section describes challenges in the Carboniferous-Permian Gondwanan stratigraphic palynology, and progress in techniques such as presence of the 'rare-marine intervals', and 'radiometric dating' in some Gondwanan successions, e.g., South Africa, Australia and South America, as tools to confidently calibrate these palynozones. The second section describes developments in the palynological work on the Carboniferous-Permian Nilawahan Group of the Salt Range, Pakistan, and summarises their correlation with the coeval succession of the Gondwana continents and with the Russian/International stages.

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Palynostratigraphy of Upper Paleozoic Sequences in Central-Western Argentina

Cited by 62 publications

References 38 publications

Afloramientos carboníferos en la quebrada La Herradura, Provincia de San Juan (oeste de Argentina), revisados: edad de las transgresiones.

Afloramientos carboníferos en la quebrada La Herradura, Provincia de San Juan (oeste de Argentina), revisados: edad de las transgresiones.

Çakraz Formation, Çamdağ area, NW Turkey: early/mid‐Permian age, Rotliegend (Germany) and Southern Alps (Italy) equivalent—a stratigraphic re‐assessment via palynological long‐distance correlation

Progress in the Gondwanan Carboniferous–Permian palynology and correlation of the Nilawahan Group of the Salt Range, Pakistan: A brief review

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