Estructura del Complejo Alpujárride y observaciones hidrogeológicas al NO de Sierra Tejeda (provincias de Granada y Málaga, Zona Interna Bética)

Abstract

Al NO de Sierra Tejeda solo se pueden diferenciar dos unidades tectónicas alpujárrides, la de Almijara y, sobre ella, la de Robledal, simplificando divisiones previas. 
 Datos hidrogeológicos avalan esta interpretación ya que apuntan a la posible conexión hidráulica entre dos áreas ocupadas por mármoles (sectores de Tejeda y Rodaderos) que previamente han sido consideradas como unidades tectónicas diferentes lo que lo hace improbable. En la unidad Robledal la presencia de gneises en la parte inferior de la secuencia litológica permite su correlación con otras unidades del grupo Guájares-Jubrique/ Los Reales (grupo superior de unidades del Complejo Alpujárride). Deformaciones extensionales se superponen al cabalgamiento de unidades, pero a las que no damos la enorme importancia atribuida en previos modelos, pues no permiten, al menos en esta área, la diferenciación de nuevas unidades tectónicas. Se muestran, además, nuevas fallas E-O situadas al N de Sierra Tejeda, que facilitaron el desplazamiento hacia el oeste de la Zona Interna Bética.

Catalogue, distribution, taxonomic notes, and conservation of the Western Palearctic endemic hunchback beetles (Tenebrionidae, Misolampus)

“…(60% of records below 1000 m of altitude); in Mallorca it is also found at low altitude, 14–398 m a.s.l. Lithological substrates of its area of occupancy are very diverse, due to the high geostructural complexity of the Betic Mountain ranges, but are mainly dolomites, limestones, slates, phyllites, mycaschists, and, very locally, plutonic rocks ( Sanz de Galdeano 1997 ; Vera 2004 ; Oliveira and Quesada 2019a , 2019b ). It inhabits usually the thermo- and meso-Mediterranean bioclimatic levels, and very locally at the supra-Mediterranean, with ombrotypes from semiarid to subhumid ( Rivas-Martínez 1987 ; Rivas-Martínez et al 2002 ; Valle 2003 ; Valle et al 2004 ).…”

“…(with 61% of its records above 800 m). Geological substrates along its distribution area are diverse, both acid and basic, including mainly sandstones, limestones, dolomites, slates, gneisses, schists and mycaschists ( Sanz de Galdeano 1997 ; Vera 2004 ; Oliveira and Quesada 2019a , 2019b ). Misolampus subglaber occupies mostly the thermo- and meso-Mediterranean thermoclimatic belts and locally supra-Mediterranean, in areas with ombrotype semiarid, dry, subhumid and, exceptionally, humid ( Rivas-Martínez 1987 ; Rivas-Martínez et al 2002 ; Valle 2003 ; Rivas-Martínez 2007 ).…”

A possible 5 km wide impact structure with associated 22 km wide exterior collapse terrain in the Alhabia–Tabernas Basin, southeastern Spain

“…The proposed crater rim (red solid semicircle in Figure 9a) is defined by the presence of an escarpment with a height that can be estimated at a minimum of 220 m, although in some areas, it can reach 350 m (Figure 10), and by the overturning of strata described by Sanz de Galdeano (1985) in the area of Cerro del Cuchillo and Cabezo Mesa Contrata (Figure 9b). Target strata in reversed order are also visible at the western rim (Figure 10) along the gravel road leading to localities B30 and B31 (Figure 9a).…”

“…In the profile by Sanz de Galdeano (1985) in Figure 9b, there are a set of seemingly upthrusted blocks in the size order of half a kilometer wide and a couple of kilometers long. They occur between the rear escarpment of the "slump scar" and the northwestern end of the profile (i.e., between the suggested crater rim and the central uplift in Figure 9a).…”

“…Sierra de Gádor is a large antiform made up of Paleozoic to Triassic Betic basement rocks and trending E–W to ENE–WSW (Voermans, Baena, Martínez, et al., 1983). Previous studies of this area describe the so‐called Felix and Gádor nappes, that is, the stacking of tectonic units that form the north‐eastern flank of Sierra de Gádor (Martín, 2006; Sanz de Galdeano, 1985; Sola et al., 2018; Voermans, Baena, Ewert, et al., 1983). The lithological succession in this area of the Alpujárride nappes (Felix and Gádor nappes) includes phyllites, quartzites, and gypsum, at the base, followed by carbonaceous schists and dolostones (in many cases as intraformational breccias), with minor limestones, altogether >600 m in thickness.…”