Results 31 to 40 of about 497 (116)
Durante el Cretácico superior se desarrolló en la Cuenca Vasco-Cantábrica una importante actividad volcánica submarina de naturaleza alcalina. Este vulcanismo estuvo relacionado con el funcionamiento de un rift y/o una falla transformante en corteza ...
M. Carracedo, F. J. Larrea, A. Alonso
doaj +1 more source
Palagonitization of Volcanic Rocks in Polar Climates: The Case of Deception Island (Antarctica)
Abstract A detailed study of palagonitization in rocks from Deception Island—one of Antarctica's most active volcanoes—has been performed to advance our understanding of this alteration process. A detailed petrographic (optical and SEM), mineralogical (XRD), and mineral and glass spot geochemistry (EDS and EMP) characterization has been conducted on ...
Oriol Vilanova‐Pagès +10 more
wiley +1 more source
La erupción volcánica de 1712, de El Charco, es una de las peor conocidas de las 8 erupciones históricas de la isla de La Palma. Fue un evento principalmente estromboliano, con fases hidromagmáticas, durante el cual se abrieron múltiples bocas a lo ...
Nicolás Chicharro +3 more
doaj +1 more source
Evaluation of bricks durability using destructive and nondestructive methods (DT and NDT)
We have studied the physical-mechanical behaviour of solid bricks treated with consolidants and/or water-repellents in accelerated aging tests to determine their durability.
G. Cultrone +3 more
doaj +1 more source
Chemische Gärten sind selbstorganisierte abiotische Strukturen mit „lebensähnlichen” Formen. Hier zeigen wir, dass solche Prozesse auch nach Zugabe konzentrierter Sulfatlösungen zu festen Calciumsalzen ablaufen und sogenannte Gipsgärten ergeben. Die dafür nötigen Bedingungen sind weitgehend kompatibel mit den geochemischen Verhältnissen auf dem frühen ...
Selina Reigl +5 more
wiley +1 more source
En el área entre Pétrola y Pozo Moro (centro-oeste de la provincia de Albacete) afloran depósitos miocenos formados por sucesiones de calcarenitas y areniscas que pueden alcanzar potencias superiores a los 11 metros.
Javier Martínez Martinez +4 more
doaj +1 more source
We have carried out a series of accelerated artificial ageing tests to study the evolution of the silico-organic treatment products applied to calcareous materials of the Catedral of Oviedo.
Rosa M. Esbert +2 more
doaj +1 more source
Abstract Relamination is closely connected to subduction zones. Despite the numerous high‐P metamorphic belts recognized on Earth, relamination remains a poorly documented process. We present a continental subduction zone where the exhuming high‐P rocks became a relaminant under the upper plate.
Rubén Díez Fernández +7 more
wiley +1 more source
The various forms of alteration presented in the monumental sandstones of the “Palacio de Revillagigedo” (Gijón, Spain) are identified, localized and studied.
Luis Valdeón +2 more
doaj +1 more source
Abstract Investigating the evolutionary trajectory of synapsid sensory and cephalic systems is pivotal for understanding the emergence and diversification of mammals. Recent studies using CT‐scanning to analyze the rostral foramina and maxillary canals morphology in fossilized specimens of probainognathian cynodonts have contributed to clarifying the ...
Pedro Henrique Morais Fonseca +7 more
wiley +1 more source

