A. Lomoschitz

A. Lomoschitz
Universidad de Las Palmas de Gran Canaria | ULPGC · Department of Civil Engineering

PhD Geological Sciences

About

62
Publications
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Introduction
Research interests: • Geology and geomorphology of volcanic islands. • Geology and Geomorphology of large landslides. • Sedimentology and paleogeography of sedimentary layers with fossils: paleoclimate significance. • Geotechnical characterization and behavior of volcanic soils and rocks.
Additional affiliations
January 2011 - present
Universidad de Las Palmas de Gran Canaria
Position
  • Senior Researcher

Publications

Publications (62)
Article
Africa is the most important source of dust in the world today and dust storms from that continent frequently deposit sediment on the nearby Canary Islands. Many investigators have inferred African dust inputs to Canary Islands paleosols based only on the presence of quartz. However, some local rocks do contain this mineral, so quartz alone is insu...
Article
The Canary Islands, east of the North Atlantic Ocean (27°N-29°N), are under the influence of the Canary Current, the descending branch of the North Atlantic Gyre, which is modulated by coastal upwelling off North-West Africa. They constitute strategic sites for palaeoclimatic reconstructions, especially for the Last Interglacial (LIG, 129 to 116 ky...
Article
The Canary Islands offer an outstanding context for paleoclimatic studies because their volcanic nature and the presence of datable lava flows, their antiquity, the existence of marine deposits and their location in the NE Atlantic. New records of Miocene and Pliocene coastal deposits are registered in the eastern Canary Islands, 100 km off the NW...
Article
The study of paleoclimates enables us to improve and better constrain climate models in order to forecast future climate variations. Marine Isotope Stage 11 (MIS11), which began around 425,000 yr BP and lasted about 65,000 yr, is a warm isotope stage of paramount importance, because the astronomical configuration was similar to the one characterizi...
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Fossiliferous bioclastic calcarenites of fluvial-aeolian origin were deposited between 4.3 ± 0.7 Ma and 3.78 ± 0.71 Ma in Lanzarote, Canary Archipelago. Climate was characterized by warm and steppic conditions. The fossil assemblage contains land snail shells that recrystallized into calcite as revealed by Raman spectroscopy. Carbon and oxygen isot...
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Los estudios del cambio climático se abordan hoy desde dos ciencias: 1) la Climatología, que analiza las variaciones del clima actual, a partir de series temporales de datos recientes, atmosféricos y marinos; y 2) la Paleoclimatología (del griego “palaois”, antiguo), que estudia los registros de cambios climáticos ocurridos en tiempos geológicos pa...
Article
The Sahara is the largest warm desert in the world, but its age has been controversial, with estimates ranging from Miocene to Holocene. Mineralogical and geochemical data show that paleosols of Pliocene to mid- Pleistocene age on Fuerteventura and Gran Canaria in the Canary Islands have developed in part from inputs of dust from Africa. These pale...
Article
The eastern coast of Fuerteventura (Canary Islands, Spain) hosts the most complete and representative emergent Holocene marine deposits in the middle latitudes (27ºN to 30ºN) of the eastern Atlantic Ocean. The deposits consist of berms of gravel and foreshore sands which form beach rocks comprising more than 62 bed sets, with each bed set containin...
Article
The recognition of marine vegetation in the fossil record brings useful information about past environmental conditions. The paleo-biogeography of seagrasses is largely unknown, since fossilized materials are rare. In this study, we report the existence of fossil deposits of a seagrass species, Halodule cf., at Gran Canaria Island (28° N, northeast...
Conference Paper
El deslizamiento de Pico de Navas (Burgos, España) fue un movimiento rotacional de gran magnitud, que involucró 50x10 6 m 3 de rocas. Los objetivos de este trabajo han sido: (1) caracterizar el deslizamiento a partir de la geología, los elementos geomorfológicos y los parámetros geotécnicos; y (2) obtener un modelo geomecánico que permita explicar...
Conference Paper
We studied the evolution of different stages of Pajonales landslide (Tirajana Depression, Gran Canaria), based on the geotechnical investigations of both in situ and mobilized volcanic materials. The deposit extends over 560 ha and it has undergone successive reactivations, some during the 20th century. The landslide comprises four large bodies tha...
Article
The recognition of marine vegetation in the fossil record brings useful information about past environmental conditions. The paleo-biogeography of seagrasses is largely unknown, since fossilized materials are rare. In this study, we report the existence of fossil deposits of a seagrass species, Halodule cf., at Gran Canaria Island (28°N, northeaste...
Article
Full-text available
Los dientes fósiles de peces están contenidos en depósitos marinos datados en ca 4.8 Ma de las Islas de Gran Canaria y Fuerteventura (Islas Canarias, España). Estas islas, situadas en el Giro subtropical del Atlántico Norte, pueden considerarse una estación intermedia entre un Mar Caribe que estaba cercano al cierre del Paso de América Central, y e...
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Full-text available
Oxygen and carbon isotope compositions of fossil bird eggshell calcite (δ18Ocalc and δ13Ccalc) are regularly used to reconstruct paleoenvironmental conditions. However, the interpretation of δ18Ocalc values of fossil eggshells has been limited to qualitative variations in local climatic conditions as oxygen isotope fractionations between calcite, b...
Article
The Famara massif, in the north of Lanzarote Island, constitutes the remains of a former island inhabited by the oldest known vertebrate fauna of the Canary archipelago off the coast of Africa. In this study, new ages are offered for the underlying and overlying basaltic lava flows of two paleontological sites. The island’s three major palaeontolog...
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Janthina typica is an extinct, rare, floating species of gastropod from the early Pliocene whose fossils have an unusual geographic distribution, appearing in the eastern North Atlantic archipelagos (Canary, Azores, Madeira and Selvagen Islands), Morocco, and Pacific (New Zealand, Australia and Japan). This study examines the origin of this biogeog...
Article
Full-text available
The Pico de Navas landslide was a large-magnitude rotational movement, affecting 50x106m3 of hard to soft rocks. The objectives of this study were: (1) to characterize the landslide in terms of geology, geomorphological features and geotechnical parameters; and (2) to obtain an adequate geomechanical model to comprehensively explain its rupture, co...
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Introducción En este artículo se muestran diversos deslizamientos que se han producido en Canarias. Se han tomado en consideración, por un lado, los depósitos de deslizamiento antiguos que, a grandes rasgos, abarcan tres grupos: los depósitos de deslizamiento de flanco insular, los depósitos volcánicos tipo debris avalanche y los depósitos gravitac...
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Two new 40Ar/39Ar ages (*) and previously published K/Ar ages of basaltic pillow lava flows are coeval with closely-related fossiliferous marine layers, allowing us to establish the beginning (5.8; 5.0; 4.8 Ma at Ajuí, Fuerteventura Island and 4.8 ± 0.03 Ma (2σ)* at Tamaraceite) and a middle stage (4.20 ± 0.18 Ma (2σ)* at La Esfinge in Gran Canaria...
Conference Paper
I. Menéndez-Pidal; A. Lomoschitz; J.L. Jiménez; E. Sanz. Enseñanza de geología en Ingenieria Civil: retos actuales, Congreso Universitario de Innovación educativa en las enseñanzas técnicas. Valencia. pp. 1 - 15. 2015.
Conference Paper
Alejandro Lomoschitz Mora-Figueroa; Ignacio Menéndez-Pidal de Navascués; Eugenio Sanz Pérez. ISSN 0899-5788 58th AEG Annual Meentig (Association on Enviromental & Engineering Geologists
Conference Paper
I. Menéndez-Pidal; A. Lomoschitz; M.A. Franesqui; J.L. Jiménez; E. Sanz. Didactica en los anejos de Geologia y Geotecnia en los TFT de las titulaciones de Ingenieria Civil: bases metodológicas, Congreso Universitario de Innovacion educativa en las enseñanzas técnicas. Valencia. pp. 1 - 18. 2015.
Article
Full-text available
There are few previous references to fossil crustaceans for the Neogene marine layers of the Canary Islands (Spain). The Mio-Pliocene marine sedimentary layers in the eastern islands (Gran Canaria, Fuerteventura and Lanzarote) were previously characterised by the presence of numerous fossil fauna, mainly anthozoans and molluscs, which correspond to...
Article
Full-text available
Resumen: Los Trabajos Fin de Título (TFT) de las titulaciones de ingeniería civil, en su modalidad de "trabajos de carácter profesional directamente relacionados con los estudios cursados", deben incluir anejos específicos de Geología y Geotecnia, cuya elaboración resulta en ocasiones compleja para los estudiantes: 1º) por el tiempo transcurrido en...
Conference Paper
Ignacio Menéndez-Pidal de Navascués; Eugenio Sanz Pérez; Alejandro Lomoschitz Mora- Figueroa; Andres Sanz Ojeda. "Actas del Congreso ibérico sobre las aguas subterráneas desafíos de la gestión para el siglo XXI". En: Actas del Congreso ibérico sobre las aguas subterráneas desafíos de la gestión para el siglo XXI. pp. 533 - 554. (España): 2014. Disp...
Chapter
Full-text available
More than 20 mega-landslides have been described in the Canary Islands affecting the flanks of the volcanic edifices. Güímar and La Orotava landslides, in Tenerife, are two exceptional cases due to their huge dimensions and outstanding geomorphological features. The estimated volume of these landslides exceed tens of cubic km. Tsunami deposits have...
Conference Paper
Eugenio Sanz Pérez; Ignacio Menéndez-Pidal de Navascués; Alejandro Lomoschitz Mora-Figueroa; Pablo Sanz ojeda. pp. 337 - 350. ISBN 978-84-941407-2-3
Conference Paper
Alejandro Lomoschitz Mora-Figueroa; Ignacio Menéndez-Pidal de Navascués; Eugenio Sanz Pérez; A Cilleros Conde. pp. 715 - 725. ISBN 978-84-941004-9-9
Article
Full-text available
Meco, J., Muhs, D.R., Fontugne, M., Ramos, A.J.G., Lomoschitz, A. & Patterson, D. 2010: Late Pliocene and Quaternary Eurasian locust infestations in the Canary Archipelago. Lethaia, Vol. 44, pp. 440–454. The Canary Archipelago has long been a sensitive location to record climate changes of the past. Interbedded with its basalt lavas are marine depo...
Conference Paper
Full-text available
In the Canary Islands there are hundreds of volcanic eones and extensive blankets of lapilli and civil works are very frequently undertaken in areas containing this material. Furthermore, basic lapilli ( of basaltic, basanitic, or tephritic composition) are common in many volcanic regions of the world. They are small pyroclastic fragments (2 to 64...
Article
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Abundant slide deposits cover the southern ravines of Grand Canary. These are mainly volcanic debris avalanches consisting of rock slides and debris slides. The main course of the Fataga ravine is entrenched 600m into the Phonolite Formation. At Arteara an accumulation of large reddish blocks has been characterised covering the right side of the ra...
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We studied a large debris-avalanche deposit of Pleistocene age in the Tenteniguada Basin, Gran Canaria Island, Spain. This deposit, which is well preserved because it is mostly covered by basanite lava flows, has distinctive matrix and block facies, hummocky topography and internal structures typical of debris avalanches. However, neither synerupti...
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Pruebas de resistividad eléctrica con telurómetro en terrenos volcánicos. Aplicación a subestaciones eléctricas Resumen: La red de puesta a tierra de las subestaciones eléctricas debe ser diseñada según los tipos de terreno y su resistividad eléctrica. Se han realizado ensayos con telurómetro en 8 zonas de Tenerife y Gran Canaria. Los terrenos son...
Article
Several islands in the Canarian archipelago show marine deposits with identical fossil faunas, which are generally assigned to different glacioeustatic marine episodes: mainly Pleistocene episodes in Lanzarote and Fuerteventura, and Mio–Pliocene ones in Gran Canaria.Three fossil species (Saccostrea chili, Nerita emiliana and Strombus coronatus) cha...
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Basaltic lapilli have been extensively used in the Canary Islands in the construction industry and their abundance encourages an understanding of their properties as aggregate. They are small pyroclastic fragments, dark colored, with 8.5 to 33 percent of interconnected voids. This high porosity is the cause of low unit weights; dry unit weight rang...
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Successive sedimentary sequences were observed in the Canary Islands. The warm phases are documented by marine terraces and their warm fauna; they are in intercalated between humid episodes documented by fossiliferous paleosols and arid episodes documented by polygonal soils and calcretes. The arid phases are testified to by heavy eolian deposition...
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Evidence of the warmest Pleistocene climatic changes is preserved in the eastern Canary Islands. Although the existence of raised fossiliferous marine deposits in northern Gran Canaria has been known since the 19th century, their chronology and significance with regard to past sea levels and temperatures have remained uncertain. Here, we show three...
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The Barranco de Tirajana (BdT), located on the island of Gran Canaria (Spain), has some specific features that differentiate it from the ravines of other volcanic islands in the Atlantic Ocean. The origin of this unusually wide upper basin (35 km2) has been under discussion over the last century although its erosional origin is nowadays widely acce...
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 The origin and development of erosion-modified, erosion-transformed, and erosion-induced depressions in volcanic terrains are reviewed and systematized. A proposed classification, addressing terminology issues, considers structural, geomorphic, and climatic factors that contribute to the topographic modification of summit or flank depressions on v...
Article
The Rosiana landslide of 1956 (Gran Canaria) is the largest movement known in Canary Islands. It is located at the bottom of the Tirajana depression. This is a complex site where many old landslides are present and it has been renently studied. From historical information, field work and the analysis of the movement we conclude that it is a transla...
Article
The Rosiana landslide of 1956 (Gran Canaria) is the largest historic movement known in the Canary Islands. It is located at the bottom of the Tirajana Depression. This is a complex site where many old landslides are present and it has been studied recently (Lomoschitz, 1995). From historical information, field work and the analysis of the movement...
Article
The evolution of the Barranco de Tirajana has followed different stages. We conclude that it was already active in upper Miocene although the main development ocurred in the Quaternary, 0.6 m.y. to 125.000 years ago. In this period Tirajana's Depression was originated, which is nowadays the upper basin, due to the triggering of large landslides in...
Article
Full-text available
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 arcósicos asociados a los bordes de cuenca y depósitos carbonatados-lutíticos de posiciones más...

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