Stratigraphy, petrography and dispersion of the lower Permian syn-eruptive deposits in the Viar Basin, Spain

Sierra, Sonia; Moreno, Carmen; Pascual, Emilio Soler

doi:10.1016/j.sedgeo.2009.01.003

Cited by 11 publications

(9 citation statements)

References 90 publications

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“…2C) is comprised of non-marine Lower Permian red beds that lie unconformably on SPZ rocks and were subsequently overthrusted by the OMZ (Sierra et al, 2009), being probably capped by clastic Triassic strata (Wagner and Mayoral, 2007). Although there is no uniform consensus on the basin structure and the volcanosedimentary stratigraphy (see Wagner and Mayoral, 2007;Sierra et al, 2009), the succession appears folded in an asymmetrical syncline with an inverted NE limb. The sedimentary succession of the Viar Basin (up to c. 300 m thick) comprises red conglomerates, sandstones and mudstones intercalated with minor limestone, and mafic and felsic volcanic rocks (Fig.…”

Section: Permian Of the Viar Basinmentioning

confidence: 99%

“…Sedimentation started with fluvial conglomerates and sandstones passed through a phase strongly influenced by volcanic activity that included the volcano-sedimentary Los Canchales Formation (Sierra et al, 2009) and culminated with a thick red bed succession deposited mostly in lacustrine environments (Wagner and Mayoral, 2007) or meandering systems with restricted swamp areas (Sierra et al, 2009). The location of the main volcanic vents is difficult to ascertain, possibly as a result of later compressive deformation (García-Navarro and Fernández, 2004;Sierra et al, 2009). Plant macrofossils indicate a Cisuralian age (Wagner and Mayoral, 2007).…”

Section: Permian Of the Viar Basinmentioning

confidence: 99%

“…Hypabyssal and pyroclastic calc-alkaline rocks associated with post-collisional, transtensional to extensional tectonics have been identified in several parts of central and southern Iberia (Ferreira and Macedo, 1977;Lago et al, 2004Lago et al, , 2005 and some of these magmatic units are coeval with the volcanoclastic deposits of the Viar Basin. The volcanic-related rocks of Viar show a wide compositional range including felsic material (Wagner and Mayoral, 2007;Sierra et al, 2009) which can account for part of the younger zircon population. Hypabyssal or extrusive volcanic rocks are probably also the source of the younger zircons found in the Santa Susana Basin.…”

Section: Late Carboniferous-permian (Late Amalgamation)mentioning

confidence: 99%

“…During most of the Carboniferous, the OMZ was likely elevated relative to the SPZ, and the flysch basins of the SPZ (b 340 Ma) were mainly sourced by the OMZ (Rosas et al, 2008;Jorge et al, 2013). Early Permian tectonic uplift of the OMZ was also postulated for the Viar region (García-Navarro and Fernández, 2004;Sierra et al, 2009). The model of lithospheric delamination promoted by the buckling of the Cantabrian Orocline suggests that the outer arc of that orocline, which includes the CIZ (Gutiérrez-Alonso et al, 2011), should have been strongly uplifted during the late Carboniferous to early Permian times (Weil et al, 2013).…”

Section: Late Carboniferous-permian (Late Amalgamation)mentioning

confidence: 99%

“…Dextral strike slip movement acting along N-S to NW-SE bounding structures is recognised in both the Santa Susana and Viar basins, although on the basis of structural data, it was proposed that the Viar Basin is associated with a younger extensional stage linked with the emplacement of basaltic sills and NW-SE trending dykes (García-Navarro and Fernández, 2004;Sierra et al, 2009). We also assume that the sediment transport systems of the Buçaco and Santa Susana basins were influenced by the basin-bounding dextral shear zones (Fig.…”

Section: Late Carboniferous-permian (Late Amalgamation)mentioning

confidence: 99%

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The transition from Pangea amalgamation to fragmentation: Constraints from detrital zircon geochronology on West Iberia paleogeography and sediment sources

Dinis

Fernandes

Jorge

et al. 2018

Sedimentary Geology

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Detrital zircon U-Pb geochronology data from late Carboniferous to Triassic clastic sedimentary rocks in SW Iberia were used to investigate the regional paleogeography during the transition from Pangea amalgamation to breakup. The major U-Pb zircon age peaks are middle Devonian to Carboniferous (~390-300 Ma), CambrianOrdovician (~530-440 Ma), Cryogenian-Ediacaran (~750-540 Ma), Stenian-Tonian (~1.2-0.9 Ga) and Paleoproterozoic (~2.3-1.8 Ga). Rapid exhumation of Variscan crystalline rocks at the contact between the South Portuguese zone and Ossa Morena Zone, explains the abundance of late Paleozoic ages in the upper Carboniferous-lower Permian continental successions. The U-Pb zircon data constrain the maximum depositional age of the Santa Susana Basin to c. 304 Ma and the Viar Basin to c. 297 Ma. The Triassic sequences, despite being c. 100 Ma younger than the Variscan tectonothermal events, contain low proportions of late Paleozoic zircon. The major peaks in all zircon spectra closely resemble those found in the adjacent basement rocks, indicating small source areas, mainly located near the rift shoulders. Longer travelled fluvial systems are postulated for the eastern portions of the Algarve Basin, which was closer to the westward advancing Tethys Ocean than the rift basins of West Iberia. Sequences that contain significant proportions of~1.2-0.9 Ga zircon are probably recycled from post-collisional Carboniferous-Permian continental deposits that were more extensive than those found today.

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Section: Permian Of the Viar Basinmentioning

confidence: 99%

Section: Permian Of the Viar Basinmentioning

confidence: 99%

Section: Late Carboniferous-permian (Late Amalgamation)mentioning

confidence: 99%

Section: Late Carboniferous-permian (Late Amalgamation)mentioning

confidence: 99%

Section: Late Carboniferous-permian (Late Amalgamation)mentioning

confidence: 99%

See 3 more Smart Citations

The transition from Pangea amalgamation to fragmentation: Constraints from detrital zircon geochronology on West Iberia paleogeography and sediment sources

Dinis

Fernandes

Jorge

et al. 2018

Sedimentary Geology

View full text Add to dashboard Cite

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Volcanism‐induced sedimentation and model: A case study of the Upper Jurassic‐Lower Cretaceous sediments in the Liuhe‐Tonghua Basin, NE China

et al. 2020

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Understanding how the lacustrine environment adapts to volcanism and the relevant products is one of the key goals of volcaniclastic sedimentology. Mixed sediments can be deposited in lacustrine basins during the interaction between volcano and environment. This article is focus on the lithology, lithofacies, association, and sedimentary sequence of the Late Jurassic-Early Cretaceous mixed sediments from the Liuhe-Tonghua Basin, revealing the transportation-accumulation processes of volcanic materials from subaerial eruption into water or subaqueous eruption mingling with terrigenous clasts. Four kinds of mixed-sediment rocks are identified including tuffaceous sandstone, tuff-lapilli tuff, breccia-agglomerate/lava and tuff lava/lava, and six lithofacies associations are identified: (a) base surge and pyroclastic flow, interpreted as the middle-distal end of a mixed-fan delta; (b) base surge-pyroclastic flow and turbidite flow, interpreted as the distal end of a mixed-fan delta; (c) base surge-pyroclastic flow-turbidite flow and mud deposits, interpreted as a mixed subaqueous fan; (d) sand sheet of the base surge and mud deposits, interpreted as a deepwater region; (e) subaerial volcanic edifice, interpreted as a volcanic ventproximal slope; (f) subaqueous volcanic edifice, interpreted as a volcanic slope. These associations may exhibit different spatial occurrences and palaeogeographic distributions, representing the transition from a volcanic to a sedimentary environment in the source to sink system, and an ideal mixed sedimentation model is established based on these associations and relevant mud deposits. These associations also exhibit a typical volcanic-sedimentary sequence including terrigenous lowstand sediments in extensional settings and mixed volcanic and terrigenous transgressivehighstand sediments in trans-extensional settings. This article presents a case of volcaniclastic sedimentation (mixed sedimentation) of Cretaceous volcano-fault basin in Northeast China, which can provide a reference for the lacustrine volcaniclastic deposition in other similar genetic basins around the world.

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Pyroclastic deposition in the Cretaceous Shahezi Formation (Well SK‐2) Songliao Basin, China: Implications for tectonics and volcanism

Cheng

Gao

et al. 2022

Geological Journal

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Well SK‐2 is located in the Songliao Basin. Core samples from this well indicate that the Early Cretaceous Shahezi Formation has a length of 2,359.01 m and is in direct contact with the basin basement of the Middle Triassic, missing the Huoshiling Formation. This paper is focused on the lowest sequence 1 (S1, at the bottom of the Shahezi Formation, interval of 5,450.72–5,695.00 m, a length of 244.28 m) of the Cretaceous basin fills. It was found that the volcanic components contributed important parts in the sequence of basin fills, and the start of the rifting resulted from the combination of regional extensional tectonics and volcanism. Based on the centimetre‐scale description of the continuous core samples, we propose a model to delineate the interaction between tectonics, volcanism, and pyroclastic deposition. The study shows the tectonic‐volcanism in the earliest rifting stages and its control on sedimentary filling. These results also have common sense for the initial rifting process of a continental half‐graben basin. Sequence 1 of the Shahezi Formation in well SK‐2 shows a typical volcanic‐ sedimentary sequence. During the lowstand stage, the weathering‐depositional system was controlled by extension; during the transgressive and highstand stages, the transitional weathering‐depositional system and the mixed volcanic and weathering depositional system were controlled by transtension.

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Stratigraphy, petrography and dispersion of the lower Permian syn-eruptive deposits in the Viar Basin, Spain

Cited by 11 publications

References 90 publications

The transition from Pangea amalgamation to fragmentation: Constraints from detrital zircon geochronology on West Iberia paleogeography and sediment sources

The transition from Pangea amalgamation to fragmentation: Constraints from detrital zircon geochronology on West Iberia paleogeography and sediment sources

Volcanism‐induced sedimentation and model: A case study of the Upper Jurassic‐Lower Cretaceous sediments in the Liuhe‐Tonghua Basin, NE China

Pyroclastic deposition in the Cretaceous Shahezi Formation (Well SK‐2) Songliao Basin, China: Implications for tectonics and volcanism

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