Results 51 to 60 of about 497 (116)
How the Sima de los Huesos was won
The Anatomical Record, Volume 307, Issue 7, Page 2225-2245, July 2024.Abstract Although the first discovery of a human fossil in the Sima de los Huesos took place in 1976, systematic excavations did not begin there until 1984. Since then, this site has been continuously excavated in month‐long camps. The site is dated by different radiometric techniques to between 430,000 and 300,000 years ago.
Juan‐Luis Arsuaga +10 more
wiley +1 more source
Ornamental granite durability: evaluation of damage caused by salt crystallization
Materiales de Construccion, 2008 The salt crystallization test is used to evaluate damage caused by soluble salts that penetrate stone and subsequently crystallize in its voids (pores or cracks). The present article discusses the findings for four ornamental granites (gris alba, grissal,
F. J. Alonso +3 more
doaj +1 more source
Volcanic Unrest After the 2021 Eruption of La Palma
Geophysical Research Letters, Volume 51, Issue 11, 16 June 2024.Abstract La Palma, Canary Islands, had its largest historical eruption in 2021. From January 2022 to May 2023 there were >2,100 seismic events, primarily at depths ≤20 km, prompting us to update the deformation and modeling study, using interferometric synthetic aperture radar observations and a last generation interpretation tool.
José Fernández +5 more
wiley +1 more source
Revisión crítica del ensayo de cristalización de sales
Materiales de Construccion, 1987 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
Magmatic Storage and Volatile Fluxes of the 2021 La Palma Eruption
Geochemistry, Geophysics, Geosystems, Volume 25, Issue 6, June 2024.Abstract The 2021 La Palma eruption (Tajogaite) was unprecedented in magnitude, duration, and degree of monitoring compared to historical volcanism on La Palma. Here, we provide data on melt inclusions in samples from the beginning and end of the eruption to compare the utility of both melt and fluid inclusions as recorders of magma storage.
K. Dayton +6 more
wiley +1 more source
Estudios Geologicos, 1989 En el Terciario de la Cuenca de Madrid existen dos unidades sedimentarias de carácter yesífero. Ambas unidades están constituidas por yesos con diferentes características, aunque su separación es dificil en diversos afloramientos debido a intensos ...
S. Ordóñez, R. Fort, M. Bustillo
doaj +1 more source
Water Resources Research, Volume 60, Issue 5, May 2024.Abstract Agricultural run‐off exposes recipient water bodies to nitrate (NO3−) pollution. Biological denitrification is a suitable method for removing NO3− in water resources that can be induced by the use of industrial organic liquid waste as an electron donor source.
Alex Abu +7 more
wiley +1 more source
Materiales de Construccion, 1993 This paper describes a study of the penetration capacity of a consolidant frequently used in restoration —ethyl silicate— applied to two monumental stones with different porosities and pore geometries: the Hontoria limestone (Burgos) and the Laspra ...
R. M. Esbert, F. Díaz-Pache
doaj +1 more source
Sedimentología de las facies detríticas de la Unidad Intermedia del Mioceno al sur y este de Madrid
Estudios Geologicos, 1985 Dentro de los niveles correspondientes a la Unidad Intermedia del Mioceno en las áreas al este y sur de Madrid, los depósitos de arenas micáceas constituyen un término característico y ampliamente repartido en las facies "transicionales" entre depósitos ...
A. Lomoschitz, J. P. Calvo, S. Ordóñez
doaj +1 more source
Relaciones entre porosidad, contenido en arcillas y durabilidad de areniscas
Materiales de Construccion, 1985 The petrographical characterization of three spanish sandstones from Villamayor (Salamanca), Somió and Tazones (Asturias) is presented. The significance of the percentage and type of the clay minerals cementing the grains on the pore system geometry, for
R. M. Esbert, J. Ordaz, L. Valdeón
doaj +1 more source