Geologic map of the Valencia del Ventoso Variscan igneous complex (SW Iberian Massif, Spain): an example of multi-stage intrusion building by contrasted magma compositions

Sarrionandia, F.; Carracedo, M.; Eguíluz, Luis; Junguitu, Josu; Lobo, Pedro; Ibarguchi, José Ignacio Gil

doi:10.1080/17445647.2013.820675

Cited by 4 publications

(3 citation statements)

References 9 publications

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“…This magmatic activity is particularly well represented by intrusive bodies (e.g. [3][4][5] ). Nevertheless, the characteristics of associated volcanic eruptions is still poorly known.…”

Section: Objectivementioning

confidence: 99%

Mineral chemistry dataset of the Tournaisian – Lower Viséan submarine basaltic volcanism of the Matachel Basin (SW Iberian Massif).

et al. 2023

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“…This magmatic activity is particularly well represented by intrusive bodies (e.g. [3][4][5] ). Nevertheless, the characteristics of associated volcanic eruptions is still poorly known.…”

Section: Objectivementioning

confidence: 99%

Mineral chemistry dataset of the Tournaisian – Lower Viséan submarine basaltic volcanism of the Matachel Basin (SW Iberian Massif).

et al. 2023

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“…Early Carboniferous magmatism in SW Iberia (including plutonic and volcanic rocks) was voluminous (Castro, 2019; Sánchez‐Carretero et al., 1990; Figure 1b). In the case of intrusive plutonic rocks, this magmatism is represented by meta‐aluminous and peraluminous calc‐alkaline granitoids s.l., with rare alkali terms (Errandonea‐Martin et al., 2019; García Casquero, 1991; Lima et al., 2012; Moita et al., 2009, 2015; Pereira et al., 2009; Pin et al., 2008; Pons, 1982; Santos et al., 1990; Sarrionandia et al., 2013). The volcanic counterparts include meta‐aluminous high‐K calc‐alkaline, peraluminous, N‐MORB‐like, and alkali rocks (Armendáriz et al., 2008; Munhá, 1983; Oliveira et al., 2013; Rosa et al., 2008; Sánchez Carretero et al., 1989; Tornos et al., 2005).…”

Section: Regional Settingmentioning

confidence: 99%

Low–Ti Continental Tholeiite Origin of Magmas With Calc‐Alkaline Signature in Transcurrent Settings: The Mississippian Matachel Volcanic Field (SW Iberian Massif)

Sarrionandia,

Errandonea‐Martin,

Larrondo

et al. 2023

Geochem Geophys Geosyst

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In the Mississippian Matachel small volcanic field of the Ossa‐Morena Zone (southern Iberian Massif) outpoured basic‐intermediate lavas exhibit geochemical characteristics of Low‐Ti continental tholeiites and calc‐alkaline lavas. Low‐Ti continental tholeiites integrate two contrasting groups of rocks: basalts (Mg#: 54 to 70; Ti/Zr: 61–79; LaN/LuN: 1.6–2.9; εNdi: +4.0–+6.6; “Group #1”), and basalts and basaltic andesites (Mg#: 43 to 66; Ti/Zr: 36–58; LaN/LuN: 2.5–5.9; εNdi: −0.2–+3.5; “Group #2”). Primitive Group #1 tholeiitic magmas were generated by partial melting of a garnet‐free lherzolite from an enriched lithospheric mantle, near the lithosphere‐asthenosphere thermal boundary layer (with a very limited asthenosphere melting input). Progressive interaction of these magmas with crustal alkali igneous rocks resulted in the formation of the petrological evolutionary trends observed, to a larger extent in the case of Group #2 Low‐Ti tholeiites. Further assimilation of amphibole‐rich calc‐alkaline metaigneous rocks might have originated the basalts and basaltic andesites with calc‐alkaline signature (Mg#: 33 to 56; Ti/Zr: 25–78; LaN/LuN: 2.0–5.6; εNdi: +2.8–+4.8). These exhibit a “Cordilleran‐type” evolutionary trend, though are unrelated to plate convergence. The magmas with calc‐alkaline signature attest to a closed‐system differentiation process controlled by the fractionation of plagioclase, clinopyroxene, magnetite and ilmenite. It is proposed that Mississippian lithospheric‐scale intra‐continental wrenching, unrelated to coeval mantle plume upwelling, reworked complexly docked mantle domains and triggered mantle melting. Enduring mid‐upper crustal processes (magma storage in mid‐crustal chambers and crustal assimilation) likely shaped the latest petrologic and geochemical aspects of the Matachel Low‐Ti tholeiites and related rocks with calc‐alkaline signature.

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“…However, as a result of the usual complex assemblage of different magma pulses, detailed maps are mandatory for specific researches (e.g. Cobbing, 2000;Díez Fernández, Martín Parra, & Rubio Pascual, 2017;Díez Fernández, Rubio Pascual, & Martín Parra, 2018, in press;Sarrionandia et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

The composite Sierra Bermeja Pluton (southern Iberian Massif): science, heritage and geoconservation

et al. 2018

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The Sierra Bermeja Pluton (∼60 km 2 surface area) exemplifies a type of controversial granites of the Iberian Massif (European Variscan Belt), the cordierite-bearing 'Serie Mixta' (mixed series) monzogranites. The pluton is included almost completely in the Cornalvo Natural Park (Badajoz, Spain), a relevant target area in Roman times. The geological mapping summarised in the presented map at 1:10,000 scale has revealed a complex intrusive assemblage. Three main cordierite-bearing monzogranite types that show local varieties constitute most of the massif. Monzogranite intrusions are younger towards the centre of the pluton and gave rise to outstanding mappable mingling/mixing zones in some areas. A NE-SW trending reduced dyke complex composed by vaugnerite series rocks, lamprophyres, aplites and quartz dykes, completes the lithological assemblage of the pluton. An inventory of Geologic Points of Interest to promote the geological knowledge of this remarkable protected area and its geoconservation is also presented.

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Geologic map of the Valencia del Ventoso Variscan igneous complex (SW Iberian Massif, Spain): an example of multi-stage intrusion building by contrasted magma compositions

Cited by 4 publications

References 9 publications

Mineral chemistry dataset of the Tournaisian – Lower Viséan submarine basaltic volcanism of the Matachel Basin (SW Iberian Massif).

Mineral chemistry dataset of the Tournaisian – Lower Viséan submarine basaltic volcanism of the Matachel Basin (SW Iberian Massif).

Low–Ti Continental Tholeiite Origin of Magmas With Calc‐Alkaline Signature in Transcurrent Settings: The Mississippian Matachel Volcanic Field (SW Iberian Massif)

The composite Sierra Bermeja Pluton (southern Iberian Massif): science, heritage and geoconservation

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