A comparison of the Iberian and Ebro Basins during the Permian and Triassic, eastern Spain: A quantitative subsidence modelling approach

Vargas, Henar; Gaspar‐Escribano, Jorge M.; López-Gómez, José; Wees, Jan-Diederik van; Cloetingh, S.A.P.L.; Horra, Raúl de la; Arché, Alfredo

doi:10.1016/j.tecto.2008.06.005

Cited by 54 publications

(58 citation statements)

References 67 publications

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“…can be traced all along the central-eastern Iberian Ranges, indicating that coeval rift ing phases were affecting this broad area (L6pez-G6mez and Arche, 1993b;Vargas et al, 2009). There is still no proof to demonstrating that these phases were related to the MBS of similar age observed in other European basins.…”

Section: Benicassim Sectionmentioning

confidence: 98%

Sedimentary evolution of the continental Early–Middle Triassic Cañizar Formation (Central Spain): Implications for life recovery after the Permian–Triassic crisis

López-Gómez

Galán-Abellán

Horra

et al. 2012

Sedimentary Geology

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The Permian-Triassic transition (P-T) was marked by important geochemical perturbations and the largest known life crisis. Consequences of this event, as oxygen-depleted conditions and the unusual behavior of the carbon cycle, were prolonged during the Early Triassic interval delaying the recovery of life in both ter restrial and marine ecosystems. Studies on Lower Triassic sediments of continental origin, as in the case of Western Europe, are especially problematic due to the scarcity of fossils and absence of precise dating. The The Cafiizar Fm. has been subdivided into six members (A-F) separated by seven (1-7) major bounding surfaces (MBS). These surfaces are well recognized laterally over hundred of km and they represent 10 4 _10 5 My. MBS-5 is considered to be of late Spathian age and it is a clear indication of tectonic activity, represented by a mild unconformity. This event represents a change in the sedimentary characteristics (reactivation) of the unit and from here to the top of the unit are found the first signals of biotic recovery, represented by tetrapod footprints, plants, roots and bioturbation. All of these characteristics and the esti mated age represented by the MBS-5 event permit this surface to be related to the coeval Hardegsen un conformity of Central-Western Europe. These first signals of biotic recovery can thus be related to an increased oxygen supply due to the new created paleogeographical corridors in the context of this tectonic activity. These biotic signals occurred 5 My after the Permian-Triassic limit crisis; a similar delay as oc curred in other coeval and neigh boring basins.

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Section: Benicassim Sectionmentioning

confidence: 98%

Sedimentary evolution of the continental Early–Middle Triassic Cañizar Formation (Central Spain): Implications for life recovery after the Permian–Triassic crisis

López-Gómez

Galán-Abellán

Horra

et al. 2012

Sedimentary Geology

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“…A punctual phase, and so not studied here, was detected in the Molina de Aragon-Majadas area during the Lite Permian-Early Triassic. Vargas et al (2009) recently demonstrated that these three phases can be recognized in other Permian-Triassic basins of the Iberian Plate, although starting and finishing times do not always coincide.…”

Section: Geological Settingmentioning

confidence: 99%

“…Each defined phase has its own stretching factor (f3, for the lithosphere mantle and 8 for the crust) data and this increased resolution in subsidence data leads to better resolution of the tectonic signal allowing the efficient and very accurate assessment of temporal and spatial relations in lithospheric rift dynamics. Recently, Vargas et al (2009) also used this technique to describe a two-layer lithospheric subsidence model for the same basin focussing on the Permian and Triassic periods. In the present report, by means of backstripping analysis of subsidence, the automated forward modelling technique and a detailed sedimen tological study of Permian and Triassic alluvial sediments of the area cited above, we analyse and discuss the possible relationship between the presence or absence of different large-scale fluvial architecture types and the stretching factors (f3 and 8) calculated for each differentiated subsidence phase.…”

Section: Introductionmentioning

confidence: 99%

Fluvial architecture as a response to two-layer lithospheric subsidence during the Permian and Triassic in the Iberian Basin, eastern Spain

López-Gómez¹,

Arché²,

Vargas

et al. 2010

Sedimentary Geology

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“…The Iberian Basin was developed as an intracratonic basin during the Middle-Upper Permian and underwent several extensional periods during the Mesozoic and Cenozoic, when two major compressive events caused structural inversion leading to the present-day configuration of the Iberian Ranges (Arche and López-Gómez, 1996;Van Wees et al, 1998;Vargas et al, 2009). This configuration shows two almost parallel NW-SE oriented domains: the Aragonian Branch to the north and the Castilian Branch to the south; they are separated by the Cenozoic Calatayud-Teruel Basin (Fig.…”

Section: Introductionmentioning

confidence: 99%

“…1). The Iberian Basin was related to other contemporaneous basins such as the Pyrenean and Catalonian Basins (Arche and López-Gómez, 1996), which experienced similar phases of evolution during their first stages along the Permian and Triassic (e.g., Vargas et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

First report of a Middle-Upper Permian magmatism in the SE Iberian Ranges: characterisation and comparison with coeval magmatisms in the western Tethys

Lago¹,

Horra

Ubide³

et al. 2013

Journal of Iberian Geology

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A multiple basic to intermediate sill is reported for the first time in the south-eastern Iberian Ranges. It is composed of several tabular to irregular levels intercalated within the fluvial sediments of the Alcotas Formation (Middle-Upper Permian). The sill could represent the youngest Paleozoic subvolcanic intrusion in the Iberian Ranges.The igneous rocks are classified as basaltic andesites. They show a subophitic microstructure constituted by plagioclase (An62 -An6), augite (En48Wo44Fs7 -En46Wo39Fs15), pseudomorphosed olivine, minor amounts of oxides (magnetite and ilmenite) and accessory F-apatite. According to the mineralogy and whole-rock composition, their geochemical affinity is transitional from subalkaline to alkaline.Radiometric dating of the sill is not feasible due to its significant alteration. Field criteria, however, suggest an emplacement coeval to the deposition of the Alcotas Formation (Middle-Upper Permian). This hypothesis is supported by the transitional affinity of these rocks, similar to other Middle-Upper Permian magmatisms in the western Tethys, e.g., from the Pyrenees.Taking into account their isotopic signature (ε Sr : -6.8 to -9.2; ε Nd : +1.7 to +8.3), an enriched mantle source with the involvement of a HIMU component has been identified. This interpretation is supported by the trace element contents.

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A comparison of the Iberian and Ebro Basins during the Permian and Triassic, eastern Spain: A quantitative subsidence modelling approach

Cited by 54 publications

References 67 publications

Sedimentary evolution of the continental Early–Middle Triassic Cañizar Formation (Central Spain): Implications for life recovery after the Permian–Triassic crisis

Sedimentary evolution of the continental Early–Middle Triassic Cañizar Formation (Central Spain): Implications for life recovery after the Permian–Triassic crisis

Fluvial architecture as a response to two-layer lithospheric subsidence during the Permian and Triassic in the Iberian Basin, eastern Spain

First report of a Middle-Upper Permian magmatism in the SE Iberian Ranges: characterisation and comparison with coeval magmatisms in the western Tethys

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