The Upper Ypresian and Lutetian in San Pelegrín section (Southwestern Pyrenean Basin): Magnetostratigraphy and larger foraminifera correlation

Rodríguez-Pintó, A.; Pueyo, Emilio L.; Serra‐Kiel, Josep; Barnolas, Antonio; Samsó, J. M.; Pocoví, A.

doi:10.1016/j.palaeo.2012.10.029

Cited by 15 publications

(7 citation statements)

References 18 publications

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“…This difference is related to the record of the rotational movement in Bartonian-Priabonian sediments during the emplacement of the Boltaña anticline (Mochales et al, 2012a(Mochales et al, , 2012b. A few preliminary data from the Balzes anticline are also available (Rodríguez-Pintó et al, 2010, 2013b, as well as some magnetostratigraphic profiles in the Ypresian and Lutetian rocks in this region (Rodríguez-Pintó et al, 2012a, 2013a.…”

Section: Structurementioning

confidence: 99%

“…Each site consists of at least 6 drilled beds along 12 m of stratigraphic section. Considering the mean accumulation rates in the region (≈ 10 cm/ka according to Rodríguez-Pintó et al, 2013a, 2013b, it can be assumed that paleosecular variation are averaged out at the site scale. We also considered 23 other sites from previous studies in the anticline (Rodríguez-Pintó et al, 2010, 2013b.…”

Section: Sampling and Laboratory Proceduresmentioning

confidence: 99%

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Rotational kinematics of a curved fold: The Balzes anticline (Southern Pyrenees)

et al. 2016

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Section: Structurementioning

confidence: 99%

Section: Sampling and Laboratory Proceduresmentioning

confidence: 99%

Rotational kinematics of a curved fold: The Balzes anticline (Southern Pyrenees)

et al. 2016

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“…(Garcés et al, 2014;. Additionally, the marine platform deposits in the southern sector of the Balzes anticline are also dated in the San Pelegrin section (Rodríguez-Pintó et al, 2013a). To the North, the Yebra de Basa section (Hogan, 1993;Hogan and Burbank, 1996) was revisited in the Lutetian-Bartonian portion by Oms et al (2003) and also by Vinyoles (2021) in the Bartonian-Priabonian part.…”

Section: Chronological Frameworkmentioning

confidence: 99%

“…and the mixed carbonate-siliciclastic succession of the Boltaña Fm. (Barnolas et al, 2019;Barnolas and Gil-Peña, 2001;Rodríguez-Pintó et al, 2013a) cropping out in the Balzes canyon. The Balzes anticline grew up synchronously with the lower-middle Lutetian (SBZ13 to SBZ15 p.p.)…”

Section: Lithostratigraphy Of the Las Bellostas Sectionmentioning

confidence: 99%

“…7) allows us to be confident about the primary character of the magnetization. The primary character is also supported by numerous magnetostratigraphic profiles very near Las Bellostas (Bentham and Burbank, 1996;Mochales et al, 2012b;Rodríguez-Pintó et al, 2013a;Vinyoles et al, 2020; Chronology and rotational kinematics of the Jaca Basin 10 selection of first quality and reliable data in Las Bellostas section was based on the following criteria; only samples with Q≤2 and MAD<20º fitted with >3 steps were used in further calculations. Among other sources of noise, the occurrence of iron sulphides and the associated delays in the lock-in time (Larrasoaña et al, 2004;Sagnotti et al, 2005) may disturb the primary signal and accordingly, an additional filter based on the VGP paleolatitude was also considered (|VGP latitude|> 30°) and some few clear outliers were also removed.…”

Section: Paleomagnetic Stability In Las Bellostas Sectionmentioning

confidence: 99%

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The chronology and rotational kinematics in the South-Eastern Jaca Basin (Southern Pyrenees): Las Bellostas section

Pueyo

Rodríguez-Pintó²,

Serra‐Kiel³

et al. 2022

GeA

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Despite the large number of magnetostratigraphic studies in the South Pyrenean Basin aiming to calibrate the basin chronostratigraphy and the biostratigraphic scales, the South Eastern Jaca Basin remains unexplored from this perspective, and its relation with the Ainsa Basin is not fully understood. In this work we contribute with new magnetostratigraphic data from the 950m thick Las Bellostas section, located in the northern hinge of the Balzes anticline. Well-proven primary signal (positive fold test and two pseudo-antiparallel polarities) supported by numerous primary data in the surroundings allow us building a reliable local polarity sequence of eight magnetozones (from R1 to N4). Additionally, seven new biostratigraphic samples (Nummulites and Assilina) in the lower part of the section (marine environment) allows tightening the section to the Geomagnetic Polarity Time Scale (GPTS) and proposing a refined age model for the southeastern Jaca Basin. The section starts in the Boltaña Fm., of Cuisian age (Shallow Benthic Zone, SBZ11), is followed by a sedimentary gap from C22n to C20n as witnessed by biostratigraphic data (SBZ11 underneath the hiatus and SBZ16 just atop). The deltaic Sobrarbe Fm. can be tracked until the C19n (Late Lutetian). From this point (200m) until the top of the section (950m), at least, the entire C18n chron can be recognized within the molassic Campodarbe Fm. (C18n.2n-C18n.1r and C18n.1n) (Bartonian) equivalent to the West to the prodeltaic Arguis marls Fm. The Middle Cusian (SBZ11) to Middle Lutetian (SBZ15) stratigraphic hiatus is, in part, enhanced by the structural position at the hinge of the Balzes anticline. These new chronostratigraphic constraints help refining the W-E and N-S stratigraphic relationships in the eastern Jaca Basin and in the Ainsa Basin. This section also allows us to accurately refine the kinematics of the rotational activity in the eastern External Sierras. The important difference in magnetic declination along the section and neighboring paleomagnetic data from the Balzes anticline (from ≈70º clockwise at the base of the stratigraphic section to non-significant at the top) together with the new age model for the Eastern Jaca Basin help characterizing the rotational activity of the Balzes thrust sheet. The rotation took place between chrons C20r (Middle Lutetian; 45Ma) and C17 (Lower Priabonian 37-38Ma) in agreement to nearby structures (Boltaña, Picodel Aguila anticlines) but clearly diachronic to western ones (Santo Domingo anticline). Besides, the rotational activity seems to follow a linear and continuous pattern (velocity 9-11º/Ma, R: 0.83-0.96) in contrast to closer structures that show two distinct rotational velocities (i.e. Boltaña). These new data still let open the debate on the rotational kinematics along the South Pyrenean basal thrust.

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Alpine Foreland Basins

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Larrasoaña

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et al. 2019

The Geology of Iberia: A Geodynamic Approach

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The Upper Ypresian and Lutetian in San Pelegrín section (Southwestern Pyrenean Basin): Magnetostratigraphy and larger foraminifera correlation

Cited by 15 publications

References 18 publications

Rotational kinematics of a curved fold: The Balzes anticline (Southern Pyrenees)

Rotational kinematics of a curved fold: The Balzes anticline (Southern Pyrenees)

The chronology and rotational kinematics in the South-Eastern Jaca Basin (Southern Pyrenees): Las Bellostas section

Alpine Foreland Basins

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