José María Redondo Vega

Universidad de León | UNILEON · Department of Geography and Geology

Till macrofabric and grain-size analysis of glacial diamictons and landforms present in several valleys of the Serra da Estrela Mountains in central Portugal were used to interpret till types and to reconstruct the glacial paleoprocess history of this mountainous region. Supraglacial melt-out and flow tills are dominant in this range. Supraglacial...

Air and near-surface ground temperatures were measured using dataloggers over 14 years (2006-2020) in 10 locations at 2262 to 2471 m.a.s.l. in a glacial cirque of the Cantabrian Mountains. These sites exhibit relevant differences in terms of substrate, solar radiation, orientation, and geomorphology. Basal temperature of snow (BTS) measurements and...

During the Late Pleistocene, the main mountain ranges of the Iberian Peninsula were covered by small icefields and cirque and alpine glaciers. The deglaciation triggered paraglacial processes that generated landforms, mostly within the ice-free glacial cirques. In this research we analyse the deglaciation process in the Muxivén Cirque (42°15′N – 6°...

The Montes de León (northwest Spain) include the Aquilanos Mountains (2142 m), the Teleno Mountains (2182 m), and the Sierra de la Cabrera (2121 m), which are Paleozoic mountains with a predominance of slate and quartzite. During the maximum glacial advance, 94 small cirque and valley glaciers (up to 9 km long) occupying c. 116 km² were formed in t...

Knowledge about the glacial geomorphology in the Leonese Cantabrian Mountains is synthesized in this chapter. After the Pyrenees, the Leonese Cantabrian Mountains hosted the largest glaciers in Iberia, with an ice surface extent exceeding 1200 km² and 22 glaciers with ice tongues >10 km. The largest glacier complexes developed in the valleys of the...

Mining activity introduces severe changes in landscapes and, subsequently, in land uses. One of the most singular changes is the existence of pit lakes, which occur in active and, more frequently, abandoned mines. Pit lakes are produced by water table interception when open-pit mines deepen. Their characteristics are highly variable, depending on t...

ABSTRACT The open pit mines produce drastic changes in the relief and in the landscapes where they are located. These changes depend on the size of the exploitations, the exploitation systems and the type of mineral extracted. The gold mining carried out by the Romans in the province of León required the mobilization of large volumes of rock to ext...

p>The structure of the property in Leon's coal mining is based on the existence of smalle mines, a fact that makes the mining space a very fragmented one. This charasteristic, which is a historial fact in the beginning of the coal mining, has developed slowly theroughout the last decades towards a concentration of the properties, with a small numb...

Dam-failure floods typically involve greater peak discharge than the largest meteorological flood at a basin. Determining the geomorphic effectiveness of extreme flooding caused by a breach mechanism provides insight into the role of flood scale on the resulting processes and landforms. Here, we present a geomorphological and hydraulic analysis of...

An active Magellanic penguin (Spheniscus magellanicus) colony has been established on Martillo Island, Beagle Channel (54°54´26” S; 67°22´58” W) since 1976. It is located in remnants of eroded drumlins placed in both ending and joined by gravel terraces of glaciofluvial and marine origin. Forest patches occupy the eastern side of the island while m...

With an extensive and high elevation surface (1800-1900 m a.s.l.), the Sancenas karst massif (Cantabrian Mountains) was home to a small icefield developed during late Pleistocene times. Glacial and karst processes are dominant in this region, generating many glaciokarst landforms which are uncommon in the glaciated mountains of Spain. Well-preserve...

Relict rock glaciers are widespread in the Cantabrian Mountains, with more than 250 lobate, tongued‐shaped and complex landforms identified. Located mostly within glacial cirques, facing north and northeast, these landforms are indicative of the distribution of ancient permafrost. Macro‐fabric analysis allows us to reconstruct the past dynamics of...

Till macrofabric and grain size analysis of glacial diamictons present in several valleys of the Northern Serra do Gerês Mountains in the Iberian Peninsula northwest were used to interpret till types and to reconstruct the glacial paleoprocess history of this mountainous region. Slope deposits, subglacial deformation and supraglacial melt-out tills...

En la provincia de León existen numerosas lagunas de pequeño tamaño localizadas en diversos ámbitos geográficos. En este trabajo, se analizan los principales orígenes que explican su presencia, tanto para aquéllas que son naturales como para las de origen antrópico. Así, en las áreas de montaña son frecuentes las lagunas de origen glaciar, que pued...

Deglaciated mountainous areas are usually affected by a great range of paraglacial processes that involve progressively denudation of glacial imprints. This study focuses on paraglacial processes and glacial landform preservation in six zones located in two catchments of the Cantabrian Mountains (NW Spain). These zones are adjacent but display impo...

Landforms resulting from the interaction between paleo-glaciers and karst are studied by using the Sierra de los Grajos (Cantabrian Mountains) as a model. This area contains glacial landforms that have not interested geomorphologists due to their low altitude (Peña Castillo is about 1857 m a.s.l.), the absence of glacial cirques and the scarcity of...

Till macrofabric and grain-size analysis of glacial diamictons and sequences present in several valleys of the Southern Serra do Gerês Mountains in the Northwestern Iberian Peninsula were used to interpret till types and to reconstruct the glacial paleoprocess history of this mountainous region. Subglacial lodgement and supraglacial melt-out tills...

El estudio de las formas periglaciares es importante porque indica unas condiciones medioambientales en las áreas montañosas a caballo entre el último periodo frío cuaternario y las presentes. Su significado paleo-climático es máximo en un contexto actual de calentamiento global en el que algunas dinámicas residuales aún persisten. En la provincia...

El estudio de las formas periglaciares es importante porque indica unas condiciones medioambientales en las áreas montañosas a caballo entre el último periodo frío cuaternario y las presentes. Su significado paleo-climático es máximo en un contexto actual de calentamiento global en el que algunas dinámicas residuales aún persisten. En la provincia...

The article presents the 1:25,000-scale geomorphological map of the upper reaches of the Curueño River, on the southern slope of the Central Cantabrian Mountains, NW Spain. The study area spans approximately 125 km2 and corresponds to the 1:25,000-scale Spanish National Topographical Map Sheet 104-I of Lugueros. The area is moderately mountainous w...

Link for print: http://www.tandfonline.com/eprint/u9YXWrjahyXNDNXGSuqe/full Till macrofabric and grain-size analysis of glacial diamictons and sequences present in several valleys of the Serra do Gerês Mountains in the Northwestern Iberian Peninsula were used to interpret till types and to reconstruct the glacial paleoprocess history of this mounta...

Changes in land use related to mining in the north-western mountains of Spain are analysed. We studied 15 representative types of mining activity in the Sil River basin (León province), including three types of mineral resources: gravel, roofing slate and coal. We use colour orthopothos of 2014 to calculate areas occupied by dumps, lagoons, open pi...

Our study analyses the current status of the Biosphere Reserves on the Cantabrian Mountains, especially the relationships that they have with other Protected Natural Areas with which very often coincide. These relationships concerns management bodies and one of their main problems that has to do with their negative demographic dynamic that has led...

Los bloques aradores son una de las formas periglaciares más características de las montañas ibéricas, pero los estudios específicos sobre los mismos son muy escasos. En este trabajo se presentan datos de medio centenar de bloques de dos enclaves del noroeste ibérico: el Alto Sil (Cordillera Cantábrica) y el macizo de Vizcodillo (Sierra de la Cabre...

Approximately 180 relict lobate and tongue-shaped rock glaciers are widespread in the Cantabrian Mountains, indicating past permafrost distribution in these mid-latitude mountains. They ere primarily located within glacial cirques, facing north and northeas, at the foot of quarzites and sandstones escarpments and over 1600 m, with some exceptions....

In the Geres Mountains of the northwestern Portugal and northwestern Spain, glacial sediments existed that had been mapped and identified, but not studied sedimentologically. Therefore, the need existed for a sedimentological study. The glacial deposits are being studied using till fabric and grain size analyses. This research will determine the di...

The La Balouta Valley, located in the extreme SW region of the Las Médulas Natural Monument and UNESCO World Heritage Site (León, Spain), is one of the largest gold-mining sites developed by Romans more than 2,000 years ago when excavating a thick series of red Miocene sediments in the area. The main determining feature of the La Balouta Valley, es...

A total of 156 glacial cirques located on two different areas in the Cantabrian Mountains (NW Spain) were identified and measured in order to continue and expand the study of these large-scale erosional forms in European mountains. Environmental variables that may explain cirque distribution (altitude, aspect and lithology), and their most importan...

The combined usage of till-fabric and grain-size analysis in the sedimentological interpretation of glacial diamictons allows the reconstruction of the processes responsible for the genesis of certain moraines. Till-fabric and grain-size data from several late Quaternary moraines present in three glacial valleys of the Serra da Peneda Mountains in...

The combined usage of till-fabric and grain-size analysis in the sedimentological interpretation of glacial diamictons allows the reconstruction of the processes responsible for the genesis of certain moraines. Till-fabric and grain-size data from several late Quaternary moraines present in three glacial valleys of the Serra da Peneda Mountains in...

Se presentan los datos de temperatura del suelo y del aire de varios enclaves en el entorno de dos glaciares rocosos en el circo del Cerro Krund (Tierra del Fuego, Argentina), a altitudes de entre 750 y 885 m. Los datos obtenidos, junto a las observaciones realizadas en la zona y la dinámica observada entre 2004 y 2010 evidencian que el más elevado...

In the Chile-Argentina border (35º55’S-70º22’W), around Cerro Campanario there are several rock glaciers developed over a glacial landscape that are partially fossilized by wind sediments accumulations. This is a striking example of the succession of geomorphic processes and spatial convergence of the resulting landforms, since the structural volca...

RESUMEN En el área de estudio, que va desde el valle del río Pisuerga por el E hasta el del río Burbia por el O, se estudia la localización de un conjunto de formas de relieve y elementos de diverso tamaño de origen glaciar. Estos restos tienen un carácter heredado y son indicios del funcionamiento de sistemas morfo-climáticos de los paleoclimas, i...

Free link to article: http://www.tandfonline.com/eprint/3Dqh9CSTgYXigxpIgK3h/full Fabric and grain-size analysis of eight deposits present in the Upper Sil River Basin palaeoglacial system of northwest Spain were used to interpret till types and to reconstruct the glacial paleoprocess history of this region. They are represented by lodgement, defo...

La distribución de varios restos de origen glaciar a lo largo del valle de Viadangos de Arbás (Norte de León, Cordillera Cantábrica, España) demuestra su ocupación por el hielo al menos durante el último periodo glaciar. Los restos obedecen a distintos mecanismos ejercidos por el flujo del hielo y a procesos yuxtaglaciares (antiguas lagunas) y para...

Several glaciers developed in the Cantabrian Mountains (NW Spain) during the last glacial maximum (LGM). In the last 15 years, several studies of glacial geomorphology have increased the knowledge about the limits of the glaciation, but little data are available about many valleys, especially on the northern slope, due to extensive postglacial eros...

Se presentan nuevos datos acerca de la importancia de la glaciación cuaternaria en el valle de Cardaño, en el norte de la provincia de Palencia. A partir del método AABR (Area Altitude Balance Ratios) se ha estimado que la altitud de la línea de equilibrio glaciar (LEG) durante el máximo avance glaciar se situó a 1840 m. A pesar de ese elevado valo...

Las formas de relieve son el resultado de la acción de un con-junto de procesos que actúan bajo determinadas condiciones ambientales, es decir, bajo diferentes tipos de clima que configuran los sistemas morfoclimá-ticos. A lo largo del tiempo geológico se suceden sobre un mismo espacio diferentes sistemas climáticos cuyo resultado es la superposici...

From 2003 to 2009 it has been tracked snowpatches in Alto Sil, in the Cantabrian Mountains. This work allowed us to locate 8 nivation hollows in this area. Currently 6 of them could be considered as active and 2 of them as inactive. A more detail study around Joyas del Nevadín and Valdeiglesia nivation hollows, allowed us to check the snow erosion...

At the north-western limit of the Mediterranean basin, in the Mediterranean–Oceanic transition zone, the multidisciplinary study of two palaeolakes: Villaseca and La Mata (Province of Leon), provides data on the last deglaciation. The juxtaglacial lakes were formed during a deglaciation phase of the last cold stage (Weichselian/Würm) estimated, fro...

In the southwestern extreme of the León province (Spain), is located the Natural Monument of LaBaña lake. Its main value is constituted, on the one hand, by the clear glacial morphology, characterized by the presence of a large cirque, rock basins and moraines, and, in a second hand and more relevant, the presence of La Baña lake, the biggest lake...

New data about the glacial geomorphology of Cardaño valley (North of Palencia province, Spain) are presented. Using AABR (Area Altitude Balance Ratios) method we have estimated the ELA position in the last maximum advance at 1840 m. Instead of this high altitude, the great surface above this altitude permitted the development of an important glacie...

Se presenta la localización de 173 glaciares rocosos relictos (atendiendo a su forma en planta: de lengua, lobulados y complejos) en seis zonas de la Cordillera Cantábrica, establecidas según factores de tipo morfoestructural y/ o concentración de glaciares rocosos relictos. Se analiza como determinados elementos como la litología, pendiente y orie...

The location of 173 complex, lobate and tongue-shaped relict rock glaciers in the Cantabrian Mountains are presented. Six zones were established based on morphostructural characteristics and/or rock glacier concentration. We analyzed the importance of lithology, slope and aspect, with original relief conditions and rock outcrops characteristics (fr...

For the first time in a sector of the Cantabrian Mountains, the Alto Sil, a detailed avalanche hazard cartography has been carried out. This cartography is based in field observations, inquiries to local people and the use of a Geographic Information System. In a first approach we define areas with suitable slopes, orientations, altitudes and veget...

The hypothesis assumed in this paper tries to explain the origin of a karstified limestone outcrop located on the left bank of the Compuerto Reservoir (Camporredondo de Alba, Palencia). Its peculiarities are both its tower and pinnacle morphology and the existence of siliceous rounded stones accumulated in the karst and its surroundings. This outcr...

This paper presents the main findings of the project entitled “The study and classification of Geosites in the province of Palencia”, funded by the Castile and Leon Regional Government and carried out by a group of experts from the University of Leon. In addition, some of the sites listed in the Project are presented in order to examine their manag...

From 2003 to 2009 it has been tracked snowpatches in Alto Sil, in the Cantabrian Mountains. This work allowed us to locate 8 nivation hollows in this area. Currently 6 of them could be considered as active and 2 of them as inactive. A more detail study around Joyas del Nevadin and Valdeiglesia nivation hollows, allowed us to check the snow erosion...

For the first time in a sector of the Cantabrian Mountains, the Alto Sil, a detailed avalanche hazard cartography has been carried out. This cartography is based in field observations, enquiries to local people and the use of a Geographic Information System. In a first approach we define areas with suitable slopes, orientations, altitudes and veget...

In previous studies we have characterised the relict rock glaciers from the Cantabrian Mountains (Spain) and now we intend to do a similar analysis of the active rock glaciers of a sector from The Andes (Argentina). This comparative analysis will allow us to interpret more accurately the data we have and to reconstruct the paleo-environmental condi...

Ground temperature data obtained from 2002 to 2007 in sites near relict rock glaciers in the Cantabrian Mountains, at altitudes between 1500 and 2300 meters is analysed. Snow cover lasted between 3 and 9 months and had a strong influence on the thermal regime. When snow was present, the soil was normally frozen in the first 5 to 10 cm, but daily fr...

Resumen: En el este trabajo se presenta la Cueva de Valdelajo, una cavidad de origen kárstico de recien-te descubrimiento, situada en el municipio de Sabero (León, España), el cual tiene una fuerte tradición minera. Esta cavidad cuenta con una elevada diversidad de espeleotemas y un magnífico grado de con-servación de los mismos, por lo que posee u...

En el entorno de Páramo del Sil (León-noroeste de España) hemos reconocido la presencia de numerosos bloques erráticos de cuarcita, asentados sobre un sustrato de pizarra. Los bloques se ubican en dos pequeños relieves destacados sobre la cubeta de Páramo. Su tamaño es muy variado, desde pequeños cantos a grandes bloques, teniendo al menos 46 de el...

Los sectores occidentales y centrales de la Montaña Cantábrica Leonesa contienen numerosos conjuntos sedimentarios lacustres vinculados con el último period