Results 11 to 20 of about 1,016,504 (237)

Clay mineral genesis and chemical evolution in the Miocene sediments of Somosaguas, Madrid Basin, Spain [PDF]

open access: yesClay Minerals, 2007
AbstractA mineralogical and microtextural study of Somosaguas Miocene deposits, located in the Madrid Basin (western Madrid, Spain), was carried out using X-ray diffraction, scanning electron microscopy, transmission electron microscopy and optical microscopy, whereas crystal chemistry data were obtained by analytical electron microscopy-transmission ...
Fesharaki, Omid   +3 more
semanticscholar   +6 more sources

Diagenesis of Late Miocene micritic lacustrine carbonates, Madrid Basin, Spain [PDF]

open access: yesSedimentary Geology, 1997
Mud-grade lacustrine limestones of Miocene age from the Madrid Basin, Spain, reveal varied and complex diagenetic histories. Microporous micrites occur as well as micrites with anhedral mosaics. The micrites have recrystallized from a metastable precursor, in part under sub-oxic meteoric diagenetic conditions probably before extensive karstification in
Wright, V.P.   +3 more
openaire   +5 more sources

Authigenic Mg-Clay Minerals Formation in Lake Margin Deposits (the Cerro de los Batallones, Madrid Basin, Spain)

open access: yesMinerals (Basel, Switzerland), 2018
The Madrid Basin contains large and well developed deposits of Mg-clays of Miocene age. These were developed in an environment controlled by a lacustrine saline-alkaline environment with an arid or semi-arid climate, leading to large deposits of Mg-clays.
Juan Emilio Herranz, M. Pozo
semanticscholar   +3 more sources

Advances in the hydraulic interpretation of water wells using flowmeter logs [PDF]

open access: yesHydrology and Earth System Sciences, 2022
This paper reports on the methodology developed for a new hydraulic interpretation of flowmeter logs, allowing a better characterization of continental hydrological basins.
J. Díaz-Curiel   +4 more
doaj   +1 more source

Correlation of Boreholes through Well Logs: Application to the Western Sector of Madrid

open access: yesSensors, 2023
This study correlates the results obtained from the resistivity and spontaneous potential well logs in six boreholes for water extraction, located in the multilayer siliciclastic basin in the Madrid region, in the center of the Iberian Peninsula.
Jesús Díaz-Curiel   +4 more
doaj   +1 more source

Long‐term evolution of cold air pools over the Madrid basin

open access: yesInternational Journal of Climatology, 2022
Cold air pools (CAPs) are one of the most severe weather conditions experienced across many basins worldwide, related to episodes of extreme cold temperatures, poor air quality, and disruption of transportation networks.
D. Rasilla   +3 more
semanticscholar   +1 more source

Nitrogen Deposition Effects on Soil Properties, Microbial Abundance, and Litter Decomposition Across Three Shrublands Ecosystems From the Mediterranean Basin

open access: yesFrontiers in Environmental Science, 2021
Atmospheric nitrogen (N) inputs in the Mediterranean Basin are projected to increase due to fossil fuel combustion, fertilizer use, and the exacerbation of agricultural production processes.
Mauro Lo Cascio   +18 more
doaj   +1 more source

Geology of the Saline Unit of the Madrid Basin. Mineral resources, geological hazards and salt mineralogenesis

open access: yesBoletín de la Real Sociedad Española de Historia Natural, 2022
The Saline Unit of the Cenozoic Basin of Madrid recognized since prehistoric times for its saline springs, which were object of exploitation to obtain salts and to use the medicinal properties of brines. At the beginning of the 20th century, the old mine
S. Ordóñez
semanticscholar   +1 more source

The Lake Chad transboundary aquifer. Estimation of groundwater fluxes through international borders from regional numerical modeling

open access: yesJournal of Hydrology: Regional Studies, 2021
Study Region: Africa. The Lake Chad transboundary aquifer Study Focus: To understand transboundary groundwater hydrodynamics and estimate quantitative groundwater fluxes values between aquifer-sharing countries.
Guillermo Vaquero   +6 more
doaj   +1 more source

Morphological characterization of 23 Malus domestica Borkh cultivars from central Spain

open access: yesGenetic Resources, 2022
The purpose of this work was to morphologically characterize an apple tree collection composed of 67 individuals from 41 accessions belonging to 23 old Spanish apple cultivars (Malus domestica Borkh) alongside 9 reference cultivars.
Alberto-Rafael Arnal   +2 more
doaj   +1 more source

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