Palynoflora from the Permian Stores Formation (Picos de Europa, Asturias, Northern Spain)

Juncal, Manuel; Diez, Bienvenido; Broutin, Jean; Martínez‐García, Enrique

doi:10.7203/sjp.31.1.17140

Cited by 10 publications

(6 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, this formation includes carbonates that are clearly of continental origin (Mamet and Martínez-García, 1995). Palaeontological data assign a Kungurian age to this formation (Juncal et al, 2016) and the volcanic rocks described at its base (Martínez-García, 1991a) would be part of what is defined in this study as the Acebal Formation (Fig. 18).…”

Section: Accepted Manuscriptmentioning

confidence: 70%

“…For the Permian, only one sample recently yielded a positive result in the Sotres Formation ( Fig. 9), enabling the adscription of a Kungurian age (early Permian) to this formation (Juncal et al, 2016). This association (SO1) is the only one of Permian age described to date in the Cantabrian Mountains.…”

Section: Palynologymentioning

confidence: 85%

“…Their selection was based on preliminary detailed geological mapping and tectonic study to avoid repetitions due to faults and thrusts ( Because of the scarcity of available data, we estimated the age of the studied lithostratigraphical formations according to palaeontological criteria. Nine new pollen assemblages obtained from nine different levels, fossil plants and footprints were collected and analysed, and these were complemented with samples recently examined by members of our research group (Juncal et al, 2016). Palynological samples were processed using HCl-HF-HCl attack techniques as described by Wood et al (1996).…”

Section: Methodsmentioning

confidence: 99%

“…More recently, numerous synthesis studies have been carried out by Martínez-García (1991, 1999, López-Gómez et al (2002), Robles (2004) and Robles and Pujalte (2004). Only few palaeontological data, basically from Permian rocks, are described in Patac (1920), Wagner and Martínez-García (1982), Demathieu and Saiz de Omeñaca (1990), Mamet and Martínez-García (1995), Gand et al (1997), Sopeña et al (2009) and Juncal et al (2016). This scarcity of data led to investigations of tectono-sedimentary relationships in the past century (Julivert, 1971;Alonso et al, 1996;García-Espina, 1997;Pulgar et al, 1999), as weel as in recent active research (Rodríguez-Fernández et al, 2002;Merino-Tomé et al, 2009;Martín-González and Heredia, 2011a, b;Cámara, 2017;Cadenas et al, 2018).…”

Section: Accepted Manuscriptmentioning

confidence: 99%

See 3 more Smart Citations

New lithostratigraphy for the Cantabrian Mountains: A common tectono-stratigraphic evolution for the onset of the Alpine cycle in the W Pyrenean realm, N Spain

López-Gómez

Martín-González

Heredia

et al. 2019

Earth-Science Reviews

Self Cite

View full text Add to dashboard Cite

The Pyrenean-Cantabrian Orogen arose through the collision of the Iberian and Eurasian plates, mostly in Cenozoic times. This orogen comprises two main mountain ranges, the Pyrenees to the east, and the Cantabrian Mountains to the west. To date, the early Alpine tectono-sedimentary phases preserved in the Cantabrian Mountains, of Permian and Triassic age, have been considered independently from the same phases in neighbouring basins of SW Europe, and even from the eastern part of the same orogeny (the Pyrenean orogeny). In consequence, the beginning of the Alpine cycle in the Cantabrian Mountains has been interpreted within a specific geodynamic context, far from the general evolutionary phases of the western Peri-Tethys basins. Through detailed field work, including geological mapping, sedimentology, lithostratigraphy and petrology of volcanic rocks, and new palaeontological data, here we define several new lithostratigraphical formations and five new tectono-sedimentary cycles (TS I-V) for the initial phases of evolution of the Mesozoic Basque-Cantabrian Basin, interrupted by periods of tectonic stability. To complete this information, we include data from an onshore borehole (Villabona Mine) and two offshore boreholes constrained by 2D reflection seismic profiles acquired in the North Iberian continental platform. The main tectono-sedimentary cycles, related to the deposition of five major identified lithostratigraphic units, can be described as follows: TS I (late Gzelian-early Asselian), relating to the late Variscan deformation and preserved in a single outcrop in all the Cantabrian Mountains (San Tirso Formation). This formation is constituted by medium-distal alluvial fan deposits in which humid intervals predominate, forming some thin coal beds. TS II (Asselian-Sakmarian), a post-Variscan extensional phase with associated calcalkaline magmatism, represented by profuse volcanic and volcanosedimentary intercalations in the early Permian sedimentary basins (Acebal Formation) and small plutons in surrounding areas. TS III (Kungurian), or reactivation of the post-Variscan extension leading to alluvial and lacustrine carbonate sedimentation in arid climate conditions, which do not change during the rest of the Permian and Triassic periods (Sotres Formation). A generalized karstification in the basin represents the end of Permian deposition, followed by an interruption in sedimentation longer than 30 Myr. The Permian tectono-sedimentary cycles (TS II and TS III) are contemporary with Variscan belt collapse and the basins are controlled by extensional reactivation of NE-SW and E-W Variscan structures, and NW-SE late Variscan structures. TS IV (late Anisian-middle Carnian), renewed sedimentation in more extensive basins, precursors of the great Mesozoic Basque-Cantabrian Basin. This cycle is represented by fluvial deposits (Cicera Formation, or Buntsandstein facies), which are interrupted by the first Mesozoic marine ingression (Rueda Formation, or Muschelkalk facies).

show abstract

Section: Accepted Manuscriptmentioning

confidence: 70%

Section: Palynologymentioning

confidence: 85%

Section: Methodsmentioning

confidence: 99%

Section: Accepted Manuscriptmentioning

confidence: 99%

See 2 more Smart Citations

New lithostratigraphy for the Cantabrian Mountains: A common tectono-stratigraphic evolution for the onset of the Alpine cycle in the W Pyrenean realm, N Spain

López-Gómez

Martín-González

Heredia

et al. 2019

Earth-Science Reviews

Self Cite

View full text Add to dashboard Cite

show abstract

“…The continental beds of the Sotres Formation are Autunian in age. Macroflora is considered late Gzhelian, Carboniferous after Wagner and Álvarez‐Vázquez (), whereas microflora and detrital zircons indicate a Cisuralian age (Permian; see Pastor‐Galán et al, ; Juncal, Díez, Broutin, & Martínez‐García, ).…”

Section: Resultsmentioning

confidence: 99%

Discovery of aMississippian–earlyBashkirian carbonate platform coeval with condensed cephalopod limestone sedimentation inNW Spain

2018

View full text Add to dashboard Cite

A new Mississippian to early Bashkirian shallow‐water carbonate platform, the Valdediezma Limestone, is identified in the central–eastern part of the Picos de Europa tectonic unit of the Cantabrian Mountains. The oldest beds (probably late Tournaisian or early Viséan) are faulted above middle Cambrian rocks. Biostratigraphy based on conodont and foraminiferal faunas allows to differentiate the Viséan–early Bashkirian Valdediezma Limestone from younger Bashkirian and Moscovian shallow‐water platforms previously described in the same area (Valdeteja and Picos de Europa formations). The Valdediezma Limestone recorded the rapid growth of a carbonate platform contemporaneous to the extended sedimentation of the Mississippian condensed, cephalopod‐bearing, nodular carbonates of the Alba Formation in the adjacent deep‐water basin. The growth of the platform continued during the late Serpukhovian and early Bashkirian, when deep‐water carbonates of the Barcaliente Formation were deposited in a geographically restricted foreland basin, and siliciclastic deposits filled the foredeep in the south‐western margin of the Cantabrian Mountains. A sedimentary hiatus from the early Bashkirian to the late Moscovian occurs above the Valdediezma Limestone. The exhumed and eroded platform was buried by late Moscovian to Kasimovian strata when the Variscan deformation affected the Picos de Europa unit. The Valdediezma Limestone was deposited on an isolated platform that rarely is preserved in South Europe, where contemporary shallow‐water carbonates were eroded and reworked into the synorogenic siliciclastic deposits of flysch‐type facies.

show abstract

Permian-Triassic Rifting Stage

López-Gómez

Alonso-Azcárate

Arché

et al. 2019

Regional Geology Reviews

View full text Add to dashboard Cite

Palynoflora from the Permian Stores Formation (Picos de Europa, Asturias, Northern Spain)

Cited by 10 publications

References 0 publications

New lithostratigraphy for the Cantabrian Mountains: A common tectono-stratigraphic evolution for the onset of the Alpine cycle in the W Pyrenean realm, N Spain

New lithostratigraphy for the Cantabrian Mountains: A common tectono-stratigraphic evolution for the onset of the Alpine cycle in the W Pyrenean realm, N Spain

Discovery of aMississippian–earlyBashkirian carbonate platform coeval with condensed cephalopod limestone sedimentation inNW Spain

Permian-Triassic Rifting Stage

Contact Info

Product

Resources

About