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Autor Villaseca González, Carlos |
Documentos disponibles escritos por este autor (98)
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The rocks at Tenzuela represent the only known outcrop of HP metabasites in the internal sectors of the Iberian Belt, in the vast Central Iberian Zone (CIZ). These rocks appear as lenses of meta-tholeiites of continental affinity intruded within[...]texto impreso
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Relics of HP-MT eclogitic assemblages related to the first metamorphic stage of the Hercynian orogeny in the Sierra de Guadarrama (Spanish Central System, SCS) are preserved as boudins of pre-Ordovician metabasites enclosed by felsic gneisses. T[...]texto impreso
Orejana García, David ; Villaseca González, Carlos ; Merino Martínez, Enrique | Sociedad Geológica de España. | 2016Nuevos datos geoquímicos (elementos mayores, traza e isótopos) y geocronológicos obtenidos en metabasitas intrusivas en las series metasedimentarias y metaígneas pre-Arenigienses del Sistema Central Español confirman la heterogeneidad composicio[...]texto impreso
El macizo de metagranitos de La Cebollera se distingue claramente de los ortogneises glandulares adyacentes de Somosierra (Sistema Central Español) por su carácter masivo, presencia de feldespatos rapakivi y aspecto fuertemente contaminado con a[...]texto impreso
Orejana García, David ; Merino Martínez, Enrique ; Villaseca González, Carlos ; Pérez-Soba Aguilar, Cecilia ; Cuesta, Andrés | John Wiley & Sons, Ltd | 2012U–Th–Pb monazite dating by electron microprobe has been applied to three peraluminous granitic intrusions of the western Montes de Toledo batholith (MTB). Back scattered electron images of monazite crystals reveal a variety of internal textures:[...]texto impreso
Villaseca González, Carlos ; Orejana García, David ; Pin, C. ; López García, José Ángel ; Andonaegui Moreno, Pilar ; Encinas Caudebat, Luis | Sociedad Geológica de España | 2002Basic magmatism in Central Spain occur sporadically during a long period of ca. 140 Ma. The scarce data set of incompatible trace element geochemistry and initial isotopic ratios (Sr, Nd) on mantle-derived basic magmatism shaw that subcontinenta[...]texto impreso
Villaseca González, Carlos ; Orejana García, David ; Pérez-Soba Aguilar, Cecilia ; Reyes Andrés, Jesús | Sociedad Geológica de España | 2005Heat production of outcropping metamorphic and granitic rocks from the Spanish Central System (SCS) is similar to other surface heat production estimates in Paleozoic provinces (average A value 2.64 mWm-3). However, heat flow range in the SCS is[...]texto impreso
Pérez-Soba Aguilar, Cecilia ; Villaseca González, Carlos ; Rivas Ponce, Antonio | Sociedad Geológica de España | 2002Direct evidences or magmatic convective flow in granitic pluton are scarce. The possible complex history of magma cooling in pluton can delele partially or completely this registration. We describe a complex elliptical structure in a porphyritic[...]texto impreso
Villaseca González, Carlos ; López García, José Ángel ; Barbero González, Luis C. | Sociedad Geológica de España | 2005Combined lead, sulphur and oxygen isotopes have been analysed in ore (galena and sphalerite) and associated (quartz, barite) minerals from the Mazarambroz Pb-Zn mineralization. Lead isotopic model ages in galenas cluster around 121 ± 8 Ma in goo[...]texto impreso
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Villaseca González, Carlos ; Pérez-Soba Aguilar, Cecilia ; González del Tánago, José | Sociedad Geológica de España. | 20041- and 5-type granites from the Sierra de Guadarrama (Spanish Central System) display contrasting evolutionary patterns for Th, Y and REE. This chemical contrast is controlled by the behaviour of accessory phases. In felsic I-type granites the l[...]