Results 11 to 20 of about 6,103 (222)
Spatial and Annual Temporal Distribution of Ozone Concentrations in the Madrid Basin Using Passive Samplers [PDF]
The Scientific World Journal, 2001 Passive samplers are useful tools for helping to describe the ozone distribution in complex terrain situations. They are also a good complement to continuous monitoring stations.
M.J. Sanz, F. Sanz, G. Sanchez-Peaa
doaj +4 more sources
Soil-landscape and climatic relationships in the middle Miocene of the Madrid Basin [PDF]
Sedimentology, 1992 ABSTRACTThe Miocene alluvial‐lacustrine sequences of the Madrid Basin, Spain, formed in highly varied landscapes. The presence of various types of palaeosols allows assessment of the effects of local and external factors on sedimentation, pedogenesis and geomorphological development.
Ana M Alonso-Zarza +2 more
exaly +5 more sources
Geosciences (Switzerland), 2020 An intra-Vallesian (Upper Miocene) paleokarst developed at the top of the Intermediate Miocene Unit in the continental intracratonic Madrid Basin is recognized.
Juan CARLOS Cañaveras +2 more
exaly +3 more sources
Dolomitization and silicification in low-energy lacustrine carbonates (Paleogene, Madrid Basin, Spain) [PDF]
Sedimentary Geology, 2002 Repetitive sequences of carbonate deposits, occurrence include in the lower part of the Paleogene Carbonate Unit (northeast border of the Madrid Basin), have been studied, defining regressive lacustrine sequences and early diagenetic processes.
Bustillo Revuelta, María Ángeles +2 more
exaly +4 more sources
Moganite in the Chalcedony Varieties of Continental Cherts (Miocene, Madrid Basin, Spain) [PDF]
Spectroscopy Letters, 2012 Varieties of chalcedony (calcedonite, quartzine, and lutecite) and other optical micro- and cryptocrystalline textures of quartz and opal from Miocene silcretes of the Madrid Basin were studied using a Thermo Fisher DXR Raman microscope. The microscope has a point-and-shoot Raman capability of 1 µm spatial resolution and was coupled with a standard ...
Ana M Alonso-Zarza
exaly +4 more sources
Analysis of summer O3 in the Madrid air basin with the LOTOS-EUROS chemical transport model [PDF]
Atmospheric Chemistry and Physics, 2019 Tropospheric O3 remains a major air-quality issue in the Mediterranean region. The combination of large anthropogenic emissions of precursors, transboundary contributions, a warm and dry aestival climate, and topographical features results in severe ...
M. Escudero +9 more
doaj +9 more sources
Structural Achitecture of the Madrid Basin from 3D Gravity Inversion [PDF]
Proceedings, 2015 The Madrid Basin is an intraplate Cenozoic basin located in the central area of the Iberian Peninsula. Basement is characterized by a wide range of lithologies, from meta-sediments to granites. Sedimentary section is associated with a carbonatic platform in Cretaceous time and with continental environments during Tertiary. During the second half of the
Olaiz, A.J. +3 more
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Sedimentology and geochemistry of carbonates from lacustrine sequences in the Madrid Basin, central Spain [PDF]
Chemical Geology, 1995 Lacustrine and alluvial carbonate facies have been investigated in Middle Miocene successions of the western side of the Madrid Basin in order to evaluate paleoenvironments in which carbonates formed. Carbonate facies are varied and include: ( 1) calcrete and dolocrete; (2) pond deposits; (3) lake margin dolostone; (4) mudflat carbonate; and (5) open ...
J P Calvo +2 more
exaly +4 more sources
Diagenesis of Late Miocene micritic lacustrine carbonates, Madrid Basin, Spain [PDF]
Sedimentary 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
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Lacustrine diatomite deposits in the Madrid Basin (Central Spain)
, 1988 La parte superior de la Unidad Intermedia del Mioceno en el sector occidental de la Cuenca de Madrid contiene varios niveles diatomíticos, que consisten tanto en diatomitas casi puras como en calizas y margas con contenido variable en diatomeas. Estos niveles fueron depositados en un ambiente lacustre somero caracterizado por condiciones de salinidad ...
Calvo Sorando, José Pedro +2 more
openaire +4 more sources