The Central Iberian arc, an orocline centered in the Iberian Massif and some implications for the Variscan belt

Catalán, José R. Martı́nez

doi:10.1007/s00531-011-0715-6

Cited by 108 publications

(78 citation statements)

References 75 publications

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“…Based on these arguments, three competing geometries have been proposed (Pastor-Galán et al, 2015b), which share two features in common: (1) the curvature encloses the center-west of Iberia with Galicia-Tras-os-Montes Zone in the core (Aerden, 2004;Pastor-Galán et al, 2018b) and (2) the change in trend in the outer arc is primarily marked by the outcrops in the Aragonese Branch of the Iberian Range and eastern Central Iberian Zone (Martínez Catalán, 2012).…”

mentioning

confidence: 99%

“…The observations used in support of the Central Iberian curved geometry are: (i) paleocurrents recorded in Ordovician quartzites (Shaw et al, 2012); (ii) fold trends and inclusions in garnets (Aerden, 2004) and (iii) fold trends and aeromagnetic anomalies (Martínez-Catalán et al, 2012).…”

mentioning

confidence: 99%

“…1) correspond with a syn-or post Variscan orogeny orocline formation (e.g. Shaw et al, 2012;Martínez-Catalán, 2012).…”

mentioning

confidence: 99%

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Late Paleozoic Iberian orocline(s) and the missing shortening in the core of Pangea. Paleomagnetism from the Iberian Range.

Pastor‐Galán¹,

Pueyo²,

Diederen³

et al. 2018

Preprint

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Supercontinents are usually interpreted to be single and rigid continental plates. How and when Pangea became a rigid supercontinent is disputed, and age estimations vary from ~330 to ~240 Ma.The Gondwana-Laurussia collision formed the Variscan-Alleghanian belt, the most prominent witness of Pangea's amalgamation. In Iberia, this orogen draws an "S" shape featured by the Once the Cenozoic rotation is restored, the change in structural trend that allegedly evidences the outer arc of the Central Iberian curve disappears. Whereas the Cenozoic rotation is incompatible with a Central Iberian curve, the Late Carboniferous rotation is fully compatible with the Cantabrian Orocline, enlarging the area affected by its counterclockwise rotations and the existence of a non-rigid Pangea until, at least, ~295 M.a.

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confidence: 99%

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Late Paleozoic Iberian orocline(s) and the missing shortening in the core of Pangea. Paleomagnetism from the Iberian Range.

Pastor‐Galán¹,

Pueyo²,

Diederen³

et al. 2018

Preprint

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“…The most significant D2-D3 Hercynian regional shear zones trend ENE-WSW and NW-SE to WNW-ESE [27][28][29]. The late Variscan compressive stresses were also responsible for the tectonic reactivation of early mineralised structures and, consequently, for late enrichments.…”

Section: Geological Settingmentioning

confidence: 99%

Remote Sensing for Mineral Exploration in Central Portugal

et al. 2017

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Central Portugal is well known for the existence of Sn-W and Au-Ag mineral occurrences primarily associated with hydrothermal processes. Despite the economic and strategic importance of such occurrences, the detailed geology of this particular region is poorly known and there is an obvious absence of geological mapping at an adequate scale. Remote sensing techniques were used in order to increase current geological knowledge of the Góis-Castanheira de Pêra area (600 km 2 ) and to guide future exploration stages by targeting and prioritising potential locations. Digital image processing algorithms, such as Red, Green, Blue (RGB) colour composites, digital spatial filters, band ratios and Principal Components Analysis, were applied to Landsat 8 imagery and elevation data. Lineaments were extracted relying on geological photointerpretation criteria, allowing the identification of new geological-structural elements. Fieldwork was carried out in order to validate the remote sensing interpretations. Integration of remote sensing data with other information sources led to the definition of locations possibly suitable for hosting Sn-W and Au-Ag mineral occurrences. These areas were ranked according to their mineral potential. Targeting the most promising locations resulted in a reduction to less than 10% of the original study area (50.5 km 2 ).

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“…The comparison needs to be performed in situ for the large crustal magnetic anomalies variability in the peninsula and other factors like magnetic contamination (Martínez Catalán, 2012). SPT belongs to INTERMAGNET (http://www.…”

Section: Data Comparison Of Moura and Spt Reference Magnetometersmentioning

confidence: 99%

Calibration of QM-MOURA three-axis magnetometer and gradiometer

Díaz-Michelena

Sanz

Cerdán

et al. 2015

Geosci. Instrum. Method. Data Syst.

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Abstract. MOURA instrument is a three-axis magnetometer and gradiometer designed and developed for Mars MetNet Precursor mission.The initial scientific goal of the instrument is to measure the local magnetic field in the surroundings of the lander i.e. to characterize the magnetic environment generated by the remanent magnetization of the crust and the superimposed daily variations of the field produced either by the solar wind incidence or by the thermomagnetic variations. Therefore, the qualification model (QM) will be tested in representative scenarios like magnetic surveys on terrestrial analogues of Mars and monitoring solar events, with the aim to achieve some experience prior to the arrival to Mars.In this work, we present a practical first approach for calibration of the instrument in the laboratory; a finer correction after the comparison of MOURA data with those of a reference magnetometer located in San Pablo de los Montes (SPT) INTERMAGNET Observatory; and a comparative recording of a geomagnetic storm as a demonstration of the compliance of the instrument capabilities with the scientific objectives.

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The Central Iberian arc, an orocline centered in the Iberian Massif and some implications for the Variscan belt

Cited by 108 publications

References 75 publications

Late Paleozoic Iberian orocline(s) and the missing shortening in the core of Pangea. Paleomagnetism from the Iberian Range.

Late Paleozoic Iberian orocline(s) and the missing shortening in the core of Pangea. Paleomagnetism from the Iberian Range.

Remote Sensing for Mineral Exploration in Central Portugal

Calibration of QM-MOURA three-axis magnetometer and gradiometer

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