Accidents transverses et coulissages longitudinaux dextres dans la partie N de l'arc de Gibraltar (Cordilleres betiques occidentales-espagne)

Didon, Jean

doi:10.2113/gssgfbull.s7-xv.2.121

Cited by 12 publications

(6 citation statements)

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“…The Flysch Trough units are represented by two main units. The Aljibe unit (Didon, 1973) is formed by a Paleogene sequence composed of claystones including calciturbidite levels, overlaid by an Aquitanian quartzite formation with marly levels (Esteras et al, 1995). The Algeciras unit shows a similar Paleogene sequence but including Late Oligocene-Lower Miocene turbiditic greywackes.…”

Section: Geological and Morphostructural Traits Of The Ronda Basin Areamentioning

confidence: 99%

The role of strain partitioning on intermontane basin inception and isolation, External Western Gibraltar Arc

Jiménez‐Bonilla

Expósito

Balanyá

et al. 2015

Journal of Geodynamics

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Section: Geological and Morphostructural Traits Of The Ronda Basin Areamentioning

confidence: 99%

The role of strain partitioning on intermontane basin inception and isolation, External Western Gibraltar Arc

Jiménez‐Bonilla

Expósito

Balanyá

et al. 2015

Journal of Geodynamics

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“…However, it must be considered as being almost as important as the other two, to which it appears to be closely related. The Gibraltar trend is clearly evident in the Rif area and in Southern Spain, where some relevant lineaments, within the Betic chain, indicate an horizontal movement (Didon, 1973). One of these elements is the boundary between the Betic chain and the Iberian foreland, known as the Guadalquivir line.…”

Section: Gibraltar Trend (E-w)mentioning

confidence: 99%

“…The analysis of Landsat imagery allowed the identification of belts of regional importance, most likely corresponding to crustal faults, the effects of which are recognizable on the cover. In the marine areas, geophysical and bathymetric information was used (Galdeano, 1977;Selli, 1974;CNR-Modello Strutturale d'Italia, 1975;CNR-Carta Tettonica d'Italia, 1979).…”

Section: The Regmatic System Of the Western Mediterraneanmentioning

confidence: 99%

THE RECENT (MIOCENE‐QUATERNARY) REGMATIC SYSTEM OF THE WESTERN MEDITERRANEAN REGION: A New Model of Ensialic Geodynamic Evolution, in a Context of Plastic/Rigid Deformation

Boccaletti

Conedera²,

Dainelli³

et al. 1982

Journal of Petroleum Geology

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By comparing the features observed on Landsat images with the known geological data, a regmatic system that controlled the entire Neogene to Recent structural evolution of the Western Mediterranean area has been recognized. The system consists of two principal conjugated shear trends, reactivating old fractures, the NE‐SW, or Moulouya, and the NW‐SE, or Gafsa. With these, an E‐W trend of prevailing shear character (Gibraltar) and a N‐S trend with mostly tensional movements (Tyrrhenian), are associated. The trends that characterize the system are always present in all the segments of the circum‐Mediterranean chains and continue in the forelands and in the marine areas, although some may prevail. The orientation and the relative movements of the fractures of the system are consistent with the slip‐line field that develops in a plastic‐rigid mobile area, when this is placed between two non parallel converging rigid blocks. The system evolves according to a monoclinic scheme, which is in turn complicated by the variations of the crustal thickness in the deformed zone and by some pre‐existing discontinuities. A progressive migration in time of the major deformations towards the SE is also observed. Mechanisms of intracontinental subduction induced by the shear system are then postulated. The new proposed model may open up new leads for the identification of prospects in the exploration for hydrocarbons, particularly along the orogenic belts.

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“…El espesor de este tramo es de unos mil metros. Su edad es Oligoceno pero puede alcanzar hasta el Aquitaniense (Didon, 1973).…”

Section: Introductionunclassified

“…El espesor de este tramo es de unos mil metros. Su edad es Oligoceno pero puede alcanzar hasta el Aquitaniense (Didon, 1973).Existen buenos atloramientos naturales en los acantilados costeros, especialmente en Punta Carnero y playa de El Rinconcillo y también en taludes artificiales en las pistas militares que recorren la rona litoral entre Tarifa y Algeciras.Se han efectuado seis cortes en materiales pertenecientes a esta unidad que, aunque a grandes rasgos presentan la misma secuencia estratigráfica, …”

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Jiménez¹,

Cruz²

1988

Estud. geol.

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RESUMENEste trabajo completa el estudio de la unidad de Algeciras, iniciado anteriormente (Ruiz Cruz et al., 1987), con el estudio de la serie tipo El Rinconcillo. Se analizan los resultados obtenidos en la serie tipo Punta Tarifa, se comparan con los anteriores y se exponen las conclusiones relativas a la unidad de Algeciras.La serie tipo Punta Tarifa se caracteriza por el porcentaje alto de interestratificados I-Y, I-E, I.Y-E, CI-I, ricos en láminas de ilita, Y la presencia bastante constante de cloritas con orígenes diversos. Las diferencias entre las series tipo estudiadas vienen dadas especialmente por el diferente contenido en determinados minerales, especialmente esmectitas, paligorskita, caolinita y clorita, que es debido fundamentalmente a diferencias en el medio químico durante el dep6sito y la diagénesis y, en cierta medida, al diferente grado de alteración de los minerales detríticos.Palabras clave: Interestratificados, cloritas, esmeetitas, unidad de Algeciras. ABSTRACfThe study of Algelciras unit, iniciated with the seríes of Rinconcillo (Ruiz Cruz et al., 1987), is now completed. The mineralogical results of the Punta Tarifa series are analyzed, and are compared witb tbe former studies, and, also conclusions relative to tbe Algeciras unit are exposed.Tbe Punta Tarifa series is characterized by tbe high content of illite-rich interestratified cIay minerals (illite-vermiculite; illite-smectite, illite-vermiculite-smectite, illite-chlorite) and the constant presence of chlorites of variable genesis. Tbe ditrerences between tbese series come from the ditrerent content in cIay minerals, specially, smectite, palygorskite, kaolinite and chlorite. DitIerences are reIated witb chemical characteristics of depositional and/or diagenetic environment and, also, witb ditrerent alteration degree of detrític minerals.Key words: Interstratified clay minerals, cbJorite, smectite, Algeciras unit. IntroducciónLa unidad de Algeciras definida por Didon (1960), está caracterizada por un potente tlysch margo-areniscoso-micáceo o tlysch de Algeciras. La serie general está constituida de muro a techo por los siguientes tramos: a) Arcillas rojas y verdes con bancos de hasta un metro de espesor de calcarenitas con convoluted, granoclasificación y huellas de muro. Su edad es Cretácico Superior-Paleoceno. b) FIysch calcáreo, en el que alternan en bancos decimétricos arcillas rojas y calcarenitas grises. Su edad es Eoceno y alcanza cien metros de potencia. c) Arcillas rojas con niveles arenosos. Su potencia es de cincuenta a cien metros y su edad es Eoceno superior-Oligoceno. d) FIysch margo-areniscoso-micáceo. Constituido por una alternancia de areniscas micáceas en bancos gruesos con arcillas grises y pardas. El espesor de este tramo es de unos mil metros. Su edad es Oligoceno pero puede alcanzar hasta el Aquitaniense (Didon, 1973).Existen buenos atloramientos naturales en los acantilados costeros, especialmente en Punta Carnero y playa de El Rinconcillo y también en taludes artificiales en las pistas militares que recorren l...

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Accidents transverses et coulissages longitudinaux dextres dans la partie N de l'arc de Gibraltar (Cordilleres betiques occidentales-espagne)

Cited by 12 publications

References 0 publications

The role of strain partitioning on intermontane basin inception and isolation, External Western Gibraltar Arc

The role of strain partitioning on intermontane basin inception and isolation, External Western Gibraltar Arc

THE RECENT (MIOCENE‐QUATERNARY) REGMATIC SYSTEM OF THE WESTERN MEDITERRANEAN REGION: A New Model of Ensialic Geodynamic Evolution, in a Context of Plastic/Rigid Deformation

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