A5035869123- Geological and Geophysical Studies Worldwide
- earthquake and tectonic studies
- Geological and Geochemical Analysis
- Archaeological and Historical Studies
- Karst Systems and Hydrogeology
- Geophysical and Geoelectrical Methods
- Hydrology and Watershed Management Studies
- Geological Modeling and Analysis
- Archaeological and Geological Studies
- Geological and Tectonic Studies in Latin America
- Hydrology and Sediment Transport Processes
- Geological formations and processes
- Geology and Paleoclimatology Research
- Geophysical Methods and Applications
- Mediterranean and Iberian flora and fauna
- Seismic Waves and Analysis
- Soil erosion and sediment transport
- Groundwater and Isotope Geochemistry
- Infectious Diseases and Tuberculosis
- Water Resource Management and Quality
- Cryospheric studies and observations
- Methane Hydrates and Related Phenomena
- Medieval Architecture and Archaeology
- 3D Modeling in Geospatial Applications
- Historical Studies of Medieval Iberia
Instituto Geológico y Minero de España
2012-2024
Consejo Superior de Investigaciones Científicas
2023
[1] We analyze focal mechanisms of shallow-intermediate earthquakes in a NW-SE transect along the western Betic Cordillera and Alboran Sea, deep located central Betics to constrain state stress at Gibraltar Arc slow convergence area. Shallow (< 40 km) are preferably clustered mountain front. A general horizontal compression is compatible with convergence, NW plunging axes agreement frontal thrust activity. Toward Sea progressively deeper, reaching intermediate depths (40–120 near coast...
Mélange rocks outcrop widely in the central and western frontal sectors of Betic Cordillera, as many other collisional orogens where they form part accretionary wedges. Extrusion Triassic plastic clays evaporites was favored by progressive accretion External Zones, mixing different provenance forming a synorogenic mélange unit. MT data coupled with gravity are valid combined methodology to characterize geometry these units, since characterization is usually uncertain using seismic...
The most recent tectonic structures of the central-eastern Internal Zones Betic Cordillera (from 3.1ºW to 1.7ºW and south 37.525ºN) include fault folds developed from Late Miocene onwards, which are related N-S/NW-SE directed continental collision moderate thickening a crust that is relatively hot at depth. In this setting, E-W WSW-ENE folds, with locally associated transpressive right-lateral reverse faults, favoured emersion northern Alborán basin palaeomargin progressive intramontane...
Abstract The Neogene-Quaternary Almería-Níjar basin includes the Carboneras Fault, which constitutes a major left-lateral feature of Betic Cordilleras. New gravity data help to determine geometry sedimentary infill. region underwent NE-SW extension during Tortonian and local NW-SE compression first stages Sierra Alhamilla uplift. During Messinian, sinistral strike-slip motion along Fault Zone, dextral NW-SE-oriented faults, development large folds such as antiform, suggest clockwise rotation...
New magnetotelluric and receiver transfer function studies provide insights from the upper to lower crust of eastern Betic Cordillera, which is deformed by large folds, normal faults, a major transcurrent left‐lateral fault, Carboneras Fault Zone (CFZ). Receiver analysis determines NNW dipping Moho reaching 20° that increases in depth, 20 km south CFZ up 34 Sierra de Los Filabres. In addition, seismic discontinuities determined are interpreted as contacts between metamorphic complexes...
Abstract A new magnetotelluric (MT) survey, along with topographic parametric sonar (TOPAS) profiles and geological field observations, were carried out on the Deception Island active volcano. 3-D resistivity models reveal an ENE–WSW elongated conductor located at a depth between two ten kilometres beneath south-eastern part of island, which we interpret as combination partial melt hot fluids. The emplacement in upper crust occurs oriented, SSE dipping regional normal fault zone, facilitates...
New structural, borehole, and time domain electromagnetic data allow us to reconstruct the 3‐D geometry of Estepa range (External Zones Western Betic Cordillera), which constitutes an isolated curved fold‐and‐thrust made up Jurassic shallow marine carbonates Cretaceous Paleocene marls marly limestones. Contraction rising load linked accretion Subbetic nappe enhanced expulsion Triassic evaporites overpressured clays during early middle Miocene, finally forming part a highly deformed mélange...
[1] We examine the late Tortonian to present-day deformation of an active seismic sector eastern Iberian foreland basement Betic Cordillera, in southern Spain. Transpressive faults affecting Paleozoic offset up Triassic rocks. Late clays and evaporites constitute a décollement level decoupling rocks ~100 m thick cover Jurassic carbonates. Monoclines trending NE-SW ENE-WSW deform driven by propagation high-angle transpressive right-lateral faults. They favor migration toward propagated fault...
The Campo de Dalias is an area with relevant seismicity associated to the active tectonic deformations of southern boundary Betic Cordillera. A non-permanent GPS network was installed monitor, for first time, fault- and fold-related activity. In addition, two high precision levelling profiles were measured twice over a one-year period across Balanegra Fault, one most faults recognized in area. absence significant movement main fault surface suggests seismogenic behaviour. possible recurrence...