Teresa Sanchez-Garcia

Teresa Sanchez-Garcia
Instituto Geológico y Minero de España | IGME · Departamento de Investigación en Recursos Geológicos

PhD

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63
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Publications

Publications (63)
Article
Recent reconnaissance geological mapping, identification of unconformities and chronostratigraphic dating of Miaolingian to Ordovician strata in the eastern Alborz Mountains have led to recognition of synsedimentary uplift episodes associated with block tilting and partial erosion of the Cambrian Mila and Ordovician Simeh Kuh, Qumes and Lashkarak f...
Conference Paper
Full-text available
En este trabajo se presenta un estudio geoquímico de roca total con un equipo portátil de fluorescencia de rayos X (pXRF). Esta técnica permite realizar análisis geoquímicos in situ no destructivos sobre muestras de roca sólida. Para realizar este estudio se seleccionó el stock granítico de El Trasquilón. Se trata de un pequeño stock, rico en Sn, L...
Article
Full-text available
A geochemical comparison of early Palaeozoic felsic magmatic episodes throughout the south-western European margin of Gondwana is made and includes (i) Furongian–Early Ordovician (Toledanian) activities recorded in the Central Iberian and Galicia–Trás-os-Montes zones of the Iberian Massif, and (ii) Early–Late Ordovician (Sardic) activities in the E...
Preprint
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Abstract. A geochemical comparison of Early Palaeozoic felsic magmatic episodes throughout the south-western European margin of Gondwana is analysed. The comparison is made between (i) Furongian–Early Ordovician (Toledanian) activies recorded in the Central Iberian and Galicia-Trás-os-Montes Zones of the Iberian Massif, and (ii) Early–Late Ordovici...
Chapter
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In the Pyrenees, the Cambrian-Lower Ordovician strata represent a quiescent time span with no remarkable tectonic activity, followed by a late Early-Mid Ordovician episode of uplift and erosion that led to the formation of the Sardic unconformity. Silurian sedimentation was widespread and transgressive followed by a Devonian succession characterize...
Chapter
A rifting stage initiated the Variscan cycle in NW Gondwana, lasted from Terreneuvian to Early Ordovician times and culminated in opening of the Rheic Ocean. The result of lithospheric stretching was the development of a horst-and-graben structure in the upper crust and formation of basins with sharp variations in thickness and facies of the sedime...
Article
Full-text available
The volcanism hosted by the Ediacaran−Terreneuvian Canaveilles Group of the Eastern Pyrenees displays two distinct geochemical affinities: (i) metabasites of the Nyer and Olette formations reflect the emplacement of a tholeiitic magmatism linked to extensional conditions, whereas (ii) subsequent felsic and calc-alkaline magmatic rocks marking the t...
Conference Paper
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New detailed continuous digitalized maps (1:50.000 scale Geode program of the Spanish Geological Survey: IGME) facilitate an innovative regional approach to the Ordovician unconformities and volcanic rocks interbedded in the sequence (Clariana García et al., online; Villar Alonso et al., online). For this work, these maps have been actualized by up...
Conference Paper
FURONGIAN-LOWER ORDOVICIAN METAVOLCANITES FROM THE TOLEDO MOUNTAINS (SPAIN) AND ITS RELATIONSHIP WITH THE TOLEDANIAN PHASE Teresa Sánchez-García1, Alejandro Díez-Montes2, J. Javier Álvaro3, Emilio J. González-Clavijo2 In: Ordovician Geodynamics: the Sardic Phase in the Pyrenees, Mouthoumet and Montagne Noire massifs (Álvaro, J.J., Casas, J.M., Cla...
Conference Paper
Cryptic Early-to-Main rift-related Cambrian magmatism in Central Iberian and Galiza-Trás-os-Montes zones revealed by U–Pb dating of inherited zircon M. Chichorro1, A.R. Solá2, Cecilio Quesada3, J. J. Álvaro4T. Sánchez-García3, A. Díez Montes5 In: Ordovician Geodynamics: the Sardic Phase in the Pyrenees, Mouthoumet and Montagne Noire massifs (Álvar...
Conference Paper
The Cantabro-Iberian Basin: Insights of the Rift- stage revealed by detrital zircon age distributions M. Chichorro1, A.R. Solá2, J. Javier Álvaro3, T. Sánchez-García4, Cecilio Quesada4, Alejandro Díez Montes4 1 GEOBIOTEC, Departamento de Ciências da Terra, Universidade Nova de Lisboa, Portugal; ma.chichorro@fct.unl.pt 2 LNEG, Unidade de Geologia,...
Conference Paper
Full-text available
Provenance of Ordovician Armorican quartzite in Iberia: the linkage with West African Craton A. Rita Solá1, Martim Chichorro2, J. Javier Álvaro3, Alejandro Díez Montes4 Teresa Sánchez-García4, Cecilio Quesada4, Solá, A.R., Chichorro, M., Álvaro, J. J., Díez Montes, A., Sánchez-García, T., Quesada, C (2017). Provenance of Ordovician Armorican qu...
Conference Paper
The evolution of the rift-drift transition stage in CIZ and GTMZ M. Chichorro1, A.R. Solá2, A. Díez Montes3, J. Javier Álvaro4, T. Sánchez-García3, Cecilio Quesada3, Chichorro, M., Solá, A.R., ., Díez Montes, A., Álvaro, J. J. , Sánchez-García, T., Quesada, C (2017). The evolution of the rift-drift transition stage in CIZ and GTMZ. In: Ordovicia...
Conference Paper
Full-text available
Ordovician magmatism in the Pyrenees JM Casas1, T Sánchez-García2, JJ Álvaro3, C Puddu4, M Liesa5 Casas, JM , Sánchez-García, T,, Álvaro, JJ, Puddu, C., Liesa, M (2017). Ordovician magmatism in the Pyrenees. In: Ordovician Geodynamics: the Sardic Phase in the Pyrenees, Mouthoumet and Montagne Noire massifs (Álvaro, J.J., Casas, J.M., Clausen, S.,...
Article
Full-text available
The El Crispinejo granite forms part of a small, but distinctive late intrusive suite of cordierite-bearing peraluminous granites in the South Portuguese Zone (SPZ). This granite has the best outcrop relationships of the suite. It cross-cuts different members of the Sierra Norte Batholith of the SPZ and the Carboniferous Volcano-Sedimentary Complex...
Data
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The Sierra Norte Batholith records a poorly studied late plutonic event characterized by discrete, cordierite-bearing, peraluminous granitic plutons. The pluton of El Crispinejo presents the best outcrop relationships. It shows intrusive relationships with the Devonian Vulcano-Sedimentary Complex and the igneous rocks that compose Sierra Norte Bath...
Article
Full-text available
The Sierra Norte Batholith records a poorly studied late plutonic event characterized by discrete, cordieritebearing, peraluminous granitic plutons. The pluton of El Crispinejo presents the best outcrop relationships. It shows intrusive relationships with the Devonian Vulcano-Sedimentary Complex and the igneous rocks that compose Sierra Norte Batho...
Article
Finding of ca. 620 Ma old zircons in a volcanic rock of the Loma del Aire unit, one of many structural divisions in the Ossa Morena Zone, some years ago, attracted much attention to this unit, which would contain, if proven, the oldest rocks so far dated not only in Ossa Morena but also in the entire Iberian Massif. In this paper, new field, petrog...
Conference Paper
The Cala area is located in the southern segment of the Iberian Massif that forms the pre-Mesozoic basement in most of the Iberian Peninsula and constitutes the westernmost extent of the European Variscan orogeny. More precisely, it is situated in the south-western limb of the Monesterio Antiform, within the Ossa-Morena Zone (OMZ), which exposes a...
Chapter
The Cala project area is a region ca. 400 km2 in size that comprises several mines and prospects hosted by Palaeozoic rocks. The Cala area is located in the southern segment of the Iberian Massif that forms the pre-Mesozoic basement in most of the Iberian Peninsula and constitutes the westernmost extent of the European Variscan orogeny. More precis...
Chapter
http://www.springer.com/de/book/9783319174273
Chapter
The Río Tinto project area is located in the South Portuguese Zone, in the eastern part of the Iberian Pyrite Belt. The Iberian Pyrite Belt (IPB) is one of the world’s best-known ore provinces hosting volcanogenic massive sulphide deposit, formed in the latest Famennian (ca. 360 Ma) and subsequently folded and metamorphosed during the Variscan orog...
Chapter
Full-text available
The 250 × 20–70 km Iberian Pyrite Belt (IPB) is a Variscan metallogenic province in SW Portugal and Spain hosting the largest concentration of massive sulphide deposits worldwide. The lowermost stratigraphic unit is the early Givetian to late Famennian-Strunian (base unknown) Phyllite-Quartzite Group (PQG), with shales, quartz-sandstones, quartzwac...
Conference Paper
geophysical investigation and the reconstruction of 3D geological area with their sulphide massive ore bodies. Geophysical models of the Río Tinto area are presented here. Application of a 3D geometrical model to the case study can be very useful in geological modelling for structural analysis and resource evaluation.
Article
Full-text available
Two distinct Cambrian magmatic pulses are recognized in the Ossa-Morena Zone (SW Iberia): an early rift-(ER) and a main rift-related event. This Cambrian magmatism is related to intra-continental rifting of North Gondwana that is thought to have culminated in the opening of the Rheic Ocean in Lower Ordovician times. New data of whole-rock geochemis...
Article
U–Pb SHRIMP geochronology on zircon extracted from a granite, a sandstone and a quartzite of the SW Iberian Massif (Ossa-Morena Zone), was used in order to investigate the contribution of Late Neoproterozoic (Cadomian) tectonothermal history to the crustal growth of northern Gondwana. The analysed Cambrian rocks were sampled along the southern marg...
Conference Paper
Full-text available
The Ossa-Morena Zone (SW Iberia) displays a well-preserved record of the history of the northern Gondwana margin in Late Ediacaran-Early Cambrian times. This period of time is marked by the late-stage evolution of the Cadomian magmatic arc and related back-arc basins (c. 590-545 Ma), and the onset of rifting and widespread magmatism (c. 530-500 Ma)...
Article
Full-text available
Two very different periods of magma emplacement in the crust of the Ossa-Morena zone (early and main events) in SW Iberia have been previously interpreted to record a Cambrian/Early Ordovician rifting event that is thought to have culminated in the opening of the Rheic Ocean during the Early Ordovician. New stratigraphic, petrographic, geochemical...
Article
Full-text available
Plagiogranites and albitic rocks belonging to contrasted magmatic associations of different ages and geodynamic environments outcrop in Ossa-Morena (OMZ) and Surportuguese (SPZ) Zones. OMZ plagiogranites are related with Cambrian-Ordovician rifting and represent a part of the felsic members of a bimodal magmatic suite and show oceanic plagiogranite...
Article
Full-text available
The Ossa Morena Zone of SW Iberia represents a continental arc accreted to the Iberian Autochthon during the Late Proterozoic–Early Cambrian Cadomian orogeny. A subsequent Cambrian–Ordovician rifting event is recorded in this zone, which was accompanied by intrusion/eruption of large volumes of igneous rocks. Exposed crustal segments show both volc...
Article
Full-text available
Expresión magmática temprana de un rift intracontinental en el margen de Gondwana durante el Cámbrico Inferior: Zona de Ossa-Morena (SW Macizo Ibérico, Resumen: Se presentan datos de un evento ígneo temprano en el Cámbrico Inferior en la Zona de Ossa-Morena, correlacionándolos en distintas áreas de España y Portugal. Los datos geoquímicos y petroló...
Article
Full-text available
Expresión magmática temprana de un rift intracontinental en el margen de Gondwana durante el Cámbrico Inferior: Zona de Ossa-Morena (SW Macizo Ibérico, Resumen: Se presentan datos de un evento ígneo temprano en el Cámbrico Inferior en la Zona de Ossa-Morena, correlacionándolos en distintas áreas de España y Portugal. Los datos geoquímicos y petroló...
Article
Full-text available
An important rifting event, accompanied by massive igneous activity, is recorded in the Ossa-Morena Zone of the SW Iberian Massif (European Variscan Orogen). It likely culminated in the formation of a new oceanic basin (Rheic ocean?), remnants of which appear presently accreted at the southern margin of the Ossa-Morena Zone. Rifting propagated diac...
Article
The Zafra area is located on the northern limb of the Olivenza-Monesterio antiform, one of the most representative structures of the Ossa-Morena Zone. A study of the Cambrian volcanic rocks in that area is presented in this paper. Volcanic rocks occur interbedded with Cambrian metasediments. These show sedimentary structures and fossil assemblages...
Conference Paper
VARISCAN TRANSPRESSIONALINVERSION OF ALOWER PALEOZOIC RIflED MARGIN (OSSA-MORENA ZONE, SW IBERIA) Teresa S{mchez GGI-cia (1) and Cecilio QUESADA (1) (I) Direcci6n de Geologia y Geofisica, IGME, Rios Rosas 23, 28003 Madrid, Spain Lsanchez@igme.es I c.quesada@igme.es The Variscan orogen has its largest and most complete outcrop in the Iberian Massif,...
Chapter
In this plutono-metamorphic zone a lithostratigraphic reconstTUlion and a tectonic scheme, acc ording to the concept of "ghost stratigraphy" of Pitcher (1 970), has been carried out, based on a detaiJed mapping (E. 1 :20.000). Two different metamorphic grad ients are discerned: the medium pressure metamorphism (M 1), observed in the kinzin~itic min...

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Projects (3)
Project
Project framed in the GeoERA call (https://geoera.eu/) and co-financed by the research and innovation program of the European Union H2020 nº 731166. This project studies the evaluation of the potential of Nb-Ta in Europe, its occurrences and mineralizations and the regions with the greatest potential, to ensure the sustainable supply of the critical raw materials of Nb and Ta.
Archived project