Results 31 to 40 of about 4,293 (167)
Revisión crítica del ensayo de cristalización de sales
The salt crystallisation test is, for its simplicity and aggressivity, one of the most suitable ageing tests to evaluate the durability of rock materials.
F. J. Alonso +3 more
doaj +1 more source
Distribución de uranio y torio en la apófisis adamellítica de Logrosán (Cáceres, España)
La apófisis de Logrosán (Cáceres, España) está constituida por una adamellita y una microdamellita, ambas de dos micas. Geoquímicamente presenta un carácter marcadamente alcalino, con una tendencia silicosódica clara, y peraluminoso.
J. Guijarro Galiano +4 more
doaj +1 more source
El análisis químico de materiales geológicos
Se presenta una breve discusión sobre las técnicas y el esquema general del análisis químico aplicado en geoquímica de rocas. Además, se incluyen ejemplos sobre la aplicación de Muestras de Referencia Geoquímica en la calibración de nuevas técnicas y en ...
Fernando Velasco Tapia +1 more
doaj +1 more source
El estudio de sistemas geotermales es abordado en la actualidad mediante la utilización de técnicas geotermométricas clásicas de manera interactiva con otras más complejas de modelización termodinámica por ordenador.
J. M. Tena +4 more
doaj +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
A review of some relevant papers about the cutting of ornamental stones with diamond tools is presented here with the aim of being useful to the Natural Stone industries. Due to the length of this paper, it has been divided in two parts: in the first one,
L. M. Suárez del Río +3 more
doaj +1 more source
The Servicio Geológico Colombiano has made available several airborne magnetometry and gamma-ray spectrometry datasets. The information was acquired in 15 blocks that cover approximately 520,000 square kilometers of Colombian territory, representing ...
Ismael Enrique Moyano Nieto +10 more
doaj +1 more source
Reactivity of laser-cleaned stones to a SO2 ageing test
In order to study the reaction or susceptibility of Nd:YAG laser cleaned stones to polluted atmospheres, several types of stone, both cemented (limestone) and crystalline (marble, granite), were exposed to an atmosphere having simulated SO2 pollution ...
F.J. Alonso +3 more
doaj +1 more source
This paper follows another one published in the preceding number of this same journal, that reviewed some scientific papers on the influence of the factors of the cutting equipments (machinery, cutting characteristics, disks, etc) on the efficiency of ...
A. Rodríguez-Rey +3 more
doaj +1 more source
The Evolution of the Cocos‐North America‐Caribbean Triple Junction From Detrital Zircon Analysis
Abstract The tectonic framework and Cenozoic evolution of the Cocos–North America–Caribbean (Co–NA–Ca) triple junction remain subjects of major geological importance due to their complexity and regional impact. New U–Pb zircon geochronology of detrital sediments and detailed structural and geomorphic mapping from southern Chiapas, Mexico, provide ...
Mattia Parolari +7 more
wiley +1 more source

