The Maastrichtian–Danian Maimará tracksite (Yacoraite Formation, Salta Group), Quebrada de Humahuaca, Argentina: environments and ichnofacies implications

Cónsole-Gonella, Carlos; Valais, Silvina de; Marquillas, Rosa A.; Sanchez, Maria Cristina

doi:10.1016/j.palaeo.2016.11.008

Cited by 26 publications

(20 citation statements)

References 116 publications

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“…It is therefore possible to assess that sedimentation started at ca 68 Ma during Maastrichtian time and ended at ca 62 Ma during Danian time. These results agree with the occurrence of Maastrichtian dinosaur footprints in sequence 2 of the Yacoraite Formation which are not recorded in the youngest sequences (Cónsole‐Gonella et al ., 2017) and of Danian palynomorphs in the overlying Tunal Formation (Volkheimer et al ., 2006).…”

Section: Discussionmentioning

confidence: 99%

“…According to biostratigraphic constraints, the age of the Yacoraite Formation is Maastrichtian−Danian. Indeed, the Lecho and Yacoraite formations host well‐preserved Senonian dinosaur bones and tracks (Raskovsky, 1968; Reyes, 1972; Alonso & Marquillas, 1986; Marquillas et al ., 2003; Cónsole‐Gonella et al ., 2017) and palynological associations of Maastrichtian age (Moroni, 1982; Quattrocchio et al ., 2005; Quattrocchio, 2006), whereas the Tunal/Olmedo formations are characterized by Danian palynological associations (Volkheimer et al ., 2006). A 12 Ma depositional time duration (75 to 63 Ma) was proposed for the Yacoraite Formation by correlating the sediment regressive/transgressive cycles with the global sea‐level curve (Hernandez et al ., 1999).…”

Section: Geological Setting and Geochronological Backgroundmentioning

confidence: 99%

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Depositional age models in lacustrine systems from zircon and carbonate U‐Pb geochronology

et al. 2022

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The Yacoraite Formation (Salta rift, Argentina) consists of Maastrichtian–Danian lacustrine carbonate and siliciclastic deposits with interbedded volcanic ash layers, organized in four third‐order stratigraphic sequences. It offers the exceptional opportunity to jointly apply in situ zircon and carbonate U‐Pb geochronology that resulted in two distinct depositional age depth models. Ages of the youngest zircon population from ash layers were linearly interpolated to derive a zircon depositional age depth model. A carbonate depositional age depth model was instead obtained from dated carbonate phases including microbialites, ooids, oncoids of calcitic and dolomitic mineralogy as well as early lacustrine calcite cements. Mean ages were defined from different carbonate phases belonging to the same layer and then linearly interpolated. Sedimentation rates were calculated from both depth models between pairs of dated samples and used to estimate the age of sequence boundaries, as well as the duration of the four stratigraphic sequences. The zircon and carbonate depositional age depth models agree with biostratigraphic constraints and exhibit excellent consistency. The onset and end of sedimentation were estimated at 68.2 ± 0.9 Ma and 62.3 ± 0.6 Ma (duration ca 5.7 Ma) via zircon geochronology and at 67.9 ± 1.7 Ma and 61.9 ± 1.3 Ma (duration ca 6.0 Ma) via carbonate geochronology. Results from this study show that with suitable samples and a newly implemented working strategy, in situ U‐Pb dating of depositional and early diagenetic carbonates represent a valuable chronostratigraphic tool for estimating sedimentation rate and duration in poorly time‐framed depositional systems.

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Section: Discussionmentioning

confidence: 99%

Section: Geological Setting and Geochronological Backgroundmentioning

confidence: 99%

Depositional age models in lacustrine systems from zircon and carbonate U‐Pb geochronology

et al. 2022

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“…Guimarães, 2014; Gomes et al ., 2020). This broad range of settings is substantiated by the mixture of marine and continental biotas exhibited, including marine fish and benthic foraminifera but also dinosaur tracks (Benedetto & Sánchez, 1972; Gayet et al ., 1993; Sempere et al ., 1997; Cónsole Gonella et al ., 2017). The interpretation of marine and continental facies alternations has fostered a long‐lasting discussion in relation to the overall cause of the variation in shallow‐marine to continental lacustrine depositional conditions.…”

Section: Geological Setting and Stratigraphymentioning

confidence: 99%

“…(2020) recently suggested that the marine incursions relate to obliquity steered astronomical cycles, because of the presence of sedimentary periodicities between short eccentricity, precession and semi‐precession in the El Molino Formation, along the Bolivian Cordillera Oriental. Although the interpretation of the palaeogeographic connections is still controversial, it is suggested that marine transgressions reached as far south as north‐west Argentina, and induced the deposition of at least the marine part of the Yacoraite limestones (Macellari, 1988; Sempere et al ., 2004; Marquillas et al ., 2005; Cónsole Gonella et al ., 2017).…”

Section: Geological Setting and Stratigraphymentioning

confidence: 99%

“…Graded skeletal-oolitic grainstone-packstones are interpreted to represent decelerating bioclastic-rich storm beds that accumulated between fair-weather wave base and storm-wave base (Ginsburg & Hardie, 1975;Kidwell et al, 1986;Gomez et al, 2014). Their composition diversity (Benedetto & S anchez, 1972;Marquillas et al, 2005Marquillas et al, , 2007C onsole Gonella et al, 2012C onsole Gonella et al, , 2017 indicates various relatively proximal sources within a shallow marine setting.…”

Section: Environmental Interpretationmentioning

confidence: 99%

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Atypical ooid diversity in the Upper Cretaceous Yacoraite Formation, Argentina

2022

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This study reports on ooid diversity from different lithotypes of the Yacoraite Formation (Salta Group basin) in the Central Andes of north‐west Argentina. The ooids display a variety of internal and external morphologies that may be deployed as proxies for seawater chemistry and hydrodynamic processes. A short review of nomenclature problems is first discussed, followed by presentation of a two‐fold quantitative and qualitative methodology. Our proposed classification addresses internal and external ooid characters in order to understand growth in response to various environmental processes at an individual particle level. This classification allows discrimination between a variety of morphologies, but also evaluation of the complexity of the processes involved in ooid formation as seen in the fossil record. This study evaluates whether the ooids present within the Yacoraite Formation share similarities with ooids formed in marine versus marine lagoon and/or lacustrine environments. A possible lacustrine interpretation finds its origin in the diverse assemblage of ooid morphotypes present, which exceeds the variations described for marine ooids. However, growth paths and occurrence of various compound morphologies point to intense marine recycling, suggesting little accommodation. Together with other sedimentological characteristics, for example, bi‐directional cross‐bedding, tidal shoals, hummocky cross‐stratification and exposure surfaces, these features suggest that marine processes had an impact on the sediments. Therefore, the ooid assemblage of the Cretaceous Yacoraite Formation was most likely formed in a shallow coastal lagoon in the framework of an epicontinental sea that at times experienced marine flooding events. A detailed evaluation of processes involved in oolite formation is needed in order to improve the stratigraphic and palaeoenvironmental understanding of ooid formation through time. This includes examining alternating constructive and destructive stages, early binding and cementation, reworking, recycling and averaging processes.

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Sauropod Ichnology: Overview and New Research Lines from a South American Perspective

Calvo

Riga

Apesteguı́a

et al. 2022

Springer Earth System Sciences

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The Maastrichtian–Danian Maimará tracksite (Yacoraite Formation, Salta Group), Quebrada de Humahuaca, Argentina: environments and ichnofacies implications

Cited by 26 publications

References 116 publications

Depositional age models in lacustrine systems from zircon and carbonate U‐Pb geochronology

Depositional age models in lacustrine systems from zircon and carbonate U‐Pb geochronology

Atypical ooid diversity in the Upper Cretaceous Yacoraite Formation, Argentina

Sauropod Ichnology: Overview and New Research Lines from a South American Perspective

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