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Herrero Fernández, María Josefa ; Martín Pérez, Andrea ; Gil Peña, Inmaculada ; Alonso-Zarza, Ana María ; Meléndez Hevia, Alfonso ; Martín García, Rebeca | Sociedad Geológica de España | 2010Detailed petrographic observations of Upper Proterozoic –Lower Cambrian deposits of the Castañar de Ibor allows the characterization of the diagenetic history of these rocks. Graywackes, shales and limestones were deposited during the Upper Prot[...]texto impreso
Rodríguez Berriguete, Álvaro ; Alonso-Zarza, Ana María ; Martín García, Rebeca | Elsevier | 2017-05-12Diagenesis of Miocene-Pliocene continental rocks in extensional Teruel Basin related to deposition of a travertine at surface has been studied. Most of the diagenetic processes described here are in relation tothe travertine deposition, so they [...]texto impreso
Martín Pérez, Andrea ; Martín García, Rebeca ; Alonso-Zarza, Ana María | Società Speleologica Italiana | 2012A drapery speleothem (DRA-1) from Castañar Cave in Spain was subjected to a detailed petrographical study in order to identify its primary and diagenetic features. The drapery’s present day characteristics are the result of the combined effects [...]texto impreso
Alonso-Zarza, Ana María ; Meléndez Hevia, Alfonso ; Martín García, Rebeca ; Herrero Fernández, María Josefa ; Martín Pérez, Andrea | Elsevier Science B.V., Amsterdam | 2012The Upper Miocene (Vallesian–Turolian) Unit II of the Teruel Graben comprises at its top a 25 m-thick sequence of palustrine deposits. Deposition of the entire unit commenced some 9 to 7 Ma ago in a halfgraben basin. Here, via a recent quarry, w[...]texto impreso
Martín Pérez, Andrea ; Alonso-Zarza, Ana María ; La Iglesia, Á. ; Martín García, Rebeca | Sociedad Geológica de España | 2015The speleothems of Castañar Cave are made of a complex mineralogical association including aragonite, dolomite, huntite, hydromagnesite and a small proportion of Mg-rich clays whose mineralogy is difficult to determine. These clays appear as thi[...]texto impreso
Martín García, Rebeca ; Alonso-Zarza, Ana María ; Frisia, Silvia ; Rodríguez Berriguete, Álvaro ; Drysdale, Russell ; Hellstromf, John | Elsevier | 2019-04-01Aragonite speleothems are increasingly being used as high-resolution climate proxies; however, aragonite is unstable and susceptible to diagenetic transformation into calcite leading to mineralogical, textural and geochemical alterations that ha[...]texto impreso
Martín Pérez, Andrea ; Martín García, Rebeca ; Alonso-Zarza, Ana María ; Herrero Fernández, María Josefa | Springer Verlag | 2010In Castaiiar Cave (Caceres, Spain), coatings of red clays cover the walls of the chambers, coexisting with diverse speleothems of aragonite, calcite, huntite and dolomite. The mineralogy of the clays is mainly illite, chlorite, kaolinite, smecti[...]texto impreso
Martín Pérez, Andrea ; Martín García, Rebeca ; Alonso-Zarza, Ana María | Sociedad Geológica de España. | 2008En la cueva de Castañar de Ibor (Cáceres), aparecen una gran variedad de espeleotemas de aragonito, calcita, dolomita, huntita y magnesita. Muchos de estos minerales son de origen primario, pero también se han observado transformaciones diagenét[...]texto impreso
Huerta, Pedro ; Martín Pérez, Andrea ; Martín García, Rebeca ; Rodríguez Berriguete, Álvaro ; La Iglesia, Á. ; Alonso-Zarza, Ana María | Elsevier | 2019-04-01Lava tubes from Lanzarote Island in the Canary Archipelago commonly show white speleothems that stand out from the black basaltic rock. Mineralogical analyses of the speleothems from El Covón and Chifletera lava tubes show that gypsum is the dom[...]texto impreso
Geochemical signals from speleothems are commonly used in the investigation of palaeoenvironments. In most cases, however, little attention is paid to whether or not these signals are primary or altered by diagenesis. The speleothems of the Cast[...]texto impreso
Martín García, Rebeca ; Alonso-Zarza, Ana María ; Martín Pérez, Andrea | Sociedad Geológica de España | 2007-05The aragonite and calcite speleothems of the Castañar de Ibor Cave show white and matt coatings that formed by micritization and dissolution of the initial crystals. These processes are also recognised in the inner part of the speleothems. Eithe[...]texto impreso
Martín García, Rebeca ; Alonso-Zarza, Ana María ; Martín Pérez, Andrea | Sociedad Geológica de España | 2007-05The aragonite and calcite speleothems of the Castañar de Ibor Cave show white and matt coatings that formed by micritization and dissolution of the initial crystals. These processes are also recognised in the inner part of the speleothems. Eithe[...]texto impreso
Alonso-Zarza, Ana María ; Zhao, Z. ; Song, C. H. ; Li, J. J. ; Zhang, J. ; Martín Pérez, Andrea ; Martín García, Rebeca ; Wang, X. X. ; Zhang, Y. ; Zhang, M. H. | Elsevier | 2009The Tianshui Basin in central China contains a thick sedimentary sequence (~1400 m) of continental deposits, Aragonian to Villafranchian (Miocene-Pliocene) in age. Intense Himalayan movements around the Paleogene/Miocene boundary triggered the u[...]texto impreso
Alonso-Zarza, Ana María ; Martín García, Rebeca ; Martín Pérez, Andrea ; Olmeda Zafrilla, Paula ; Fernández Amo, Francisco J. | Sociedad Geológica de España | 2018Las cuevas que forman el Monumento Natural Cuevas de Fuentes de León se desarrollaron en una sucesión cámbrica detrítico-carbonática, que incluye algunas dolomías. Cueva Masero es una de las de mayor tamaño y contiene una amplia variedad de espe[...]texto impreso
Herrero Fernández, María Josefa ; Martín Pérez, Andrea ; Alonso-Zarza, Ana María ; Gil Peña, Inmaculada ; Meléndez Hevia, Alfonso ; Martín García, Rebeca | Elsevier | 2011The Ediacaran deposits (between 635 and 542 Ma) of the Central Zone of the Iberian Massif consist of alternating siliciclastic and carbonate beds. These carbonates are dolostones and magnesites which are interpreted to have been formed by the re[...]
