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Mediano

ID #066
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General Information

Structure type
Deformed/Undeformed
Geological Setting ,
Outcropping/buried
Evaporite unit/s name
Evaporite unit/s age
Evaporite unit/s origin
Classif. (Hudec and Jackson, 2009) ,
Classif. (Jackson and Talbot, 1986)
Age of evaporite flow or deformation (when deformed)
Other comments The great thickness of the Triassic section in the anticline core is interpreted as the result of intra-Triassic duplexes and superposition of several detachment levels (see Cámara and Flinch, 2017).

Location

Location

Map (detail)

Location
Location

Geological map

Location

Cross section

Location

Structure type (Hudec and Jackson, 2009)

Location

Regional Stratigraphy

Location

Other maps 1

Location

Other maps 2

Generic Data

Unique ID 66
Name Mediano
Structure type Evaporite-cored anticline
Deformed/Undeformed Deformed
Buried/Outcropping Outcropping
Geological setting Southern Pyrenees
Geological Regional Setting South Pyrenees Central Unit (Sierras Marginales; Gavarnie thrust sheet)
Evaporite unit/s name El Pont de Suert Fm. (Middle Muschelkalk and Keuper Facies)
Evaporite unit/s age Upper Anisian and Carnian-Rhaetian (Middle-Upper Triassic)
Evaporite unit/s era Mesozoic
Evaporite unit/s origin Marine
Evaporite unit/s composition Shale-Marlstone-Gypsum-Anhydrite
Post-kinematic unit/s (or post-evaporite units when evaporites are undeformed) Priabonian-Oligocene (Campodarbe Fm., sandstones and claystones) ; Oligocene (Graus Fm., conglomerates) ; Quaternary (alluvial and colluvial detrital deposits)
Post-kinematic unit/s age (or post-evaporite units when evaporites are undeformed) Priabonian-Holocene
Classification (Hudec and Jackson, 2009) Thrust piercement / Ductile piercement
Classification (Jackson and Talbot, 1986) Salt anticline
Mining activity? Y
Mining activity start –
Mining activity end –
Mining galleries? –
Mining products Sandstone
Mining sub-products –
Evaporite flow? Y
Age of evaporite flow Lutetian-Bartonian
Flow or deformation triggering mechanisms Clockwise rotation of the structures as a consequence of the differential and larger southern displacement of the South Pyrenean thrust sheets located further to the east where the Triassic evaporitic section was thicker (see Cámara & Klimowitz, 1985; Mochales et al., 2012)
Flow-linked structures? Y
Halokinetic structures Thrust faults / thickness variations / joints / progressive unconformities
Post-evaporite and pre-kinematic unit/s (overbuden) Upper Cenomanian-Lower Santonian («Calcaires des Canyons», limestones) ; Upper Santonian-Maastrichtian (limestones and calcarenites) ; Palaeocene (Garumnian, shales, mudstones, limestones) ; Illerdian (Alveolinid Limestone) ; Lower Eocene ((illaris, Metils, and Yeba Fms., marlstones and limestones)
Syn-kinematic unit/s Early-Middle Lutetian (San Vicente Fm., shales, marlstones, sandstones, brecchias) ; Middle-Late Lutetian (Sobrarbe Fm., mudstones, shales and sandstones ) ; Late Lutetian-Bartonian (Escanilla Fm., sandstones and conglomerates)
Available seismic profiles JAT-88 / SP-67 / ND-115 / SP-65 / JAT-98 / SP-68 / JAT-86 / ND-163 / SP-67 / SP-3 / SP-14 / JAT-88 / JAT-90 / JAT-86 / SP-84-18 / SP-84-17 / SP-84-23 / JAT-98 / SP-68 / SP-19 / SP-84-10
Available boreholes Surpirineica-1 / Campanue-1
Additional comments The great thickness of the Triassic section in the anticline core is interpreted as the result of intra-Triassic duplexes and superposition of several detachment levels (see Cámara and Flinch, 2017).

Mining Data

UNIQUE_ID 66
Minning exploitations within <2km? Y
Historical/Active Active
Exploitation name #1 AINSA
Exploitation ID (Spanish National Mining Cadastre) #1 186
Municipality #1 Aínsa-Sobrarbe
Province #1 HUESCA
Company #1 EXCAVACIONES ACB SL
Main minning Products #1 Sandstone
Exploitation name #2
Exploitation ID (Spanish National Mining Cadastre) #2
Municipality #2
Province #2
Company #2
Main minning Products #2
Exploitation name #3
Exploitation ID (Spanish National Mining Cadastre) #3
Municipality #3
Province #3
Company #3
Main minning Products #3

Quantitative Data

UNIQUE_ID 66
Outcropping area (km2) 17.80004
Horizontal intersection area (km2) (when buried) Not buried
Depth of intersection area (km2) (when buried) Not buried
Max. Width (Km) 14.8031398
Max. Length (Km) 3.6072143
Max. Evaporites thickness (km) 3.5
Max. Deformation age (Ma) 47
Min. Deformation age (Ma) 37
Deformation stages 1

Reference Data

UNIQUE_ID 66
Section source Muñoz, J. A., Beamud, E., Fernández, O., Arbués, P., Dinarès‐Turell, J., Poblet, J., 2013. The Ainsa Fold and thrust oblique zone of the central Pyrenees: Kinematics of a curved contractional system from paleomagnetic and structural data. Tectonics, 32(5), 1142-1175. [link]
Well / Borehole availability #1 Cámara, P., Flinch, J. F., 2017. The southern Pyrenees: a salt-based fold-and-thrust belt. In Permo-Triassic Salt Provinces of Europe, North Africa and the Atlantic Margins (pp. 395-415). Elsevier. [link]
Well / Borehole availability #2 Muñoz, J. A., Mencos, J., Roca, E., Carrera, N., Gratacós, O., Ferrer, O., Fernández, O., 2018. The structure of the South-Central-Pyrenean fold and thrust belt as constrained by subsurface data. Geologica Acta, 16(4), 439-460. [link]
Available data (Stratigraphy) #1 Muñoz, J. A., Beamud, E., Fernández, O., Arbués, P., Dinarès‐Turell, J., Poblet, J., 2013. The Ainsa Fold and thrust oblique zone of the central Pyrenees: Kinematics of a curved contractional system from paleomagnetic and structural data. Tectonics, 32(5), 1142-1175. [link]
Available data (Stratigraphy) #2 Bayliss, N. J., Pickering, K. T., 2015. Deep-marine structurally confined channelised sandy fans: middle eocene morillo system, Ainsa basin, Spanish pyrenees. Earth-Science Reviews, 144, 82-106. [link]
Available data (Stratigraphy) #3 Holl, J. E., Anastasio, D. J., 1993. Paleomagnetically derived folding rates, southern Pyrenees, Spain. Geology, 21(3), 271-274. [link]
Available data (Stratigraphy) #4 Mochales, T., 2011. Chronostratigraphy, vertical axis rotations and AMS in the Boltaña anticline (Southern Pyrenees): kinematic implications [Ph.D. thesis]: Universidad de Zaragoza, 304pp. [link]
Available data (Stratigraphy) #5 Mochales, T., Barnolas, A., Pueyo, E. L., Serra-Kiel, J., Casas, A. M., Samsó, J. M., …, Sanjuán, J., 2012. Chronostratigraphy of the Boltaña anticline and the Ainsa Basin (southern Pyrenees). GSA Bulletin, 124(7-8), 1229-1250. [link]
Available data (Stratigraphy) #6 Beamud, E., Garcés, M., Cabrera, L., Muñoz, J. A., Almar, Y., 2003. A new middle to late Eocene continental chronostratigraphy from NE Spain. Earth and Planetary Science Letters, 216(4), 501-514. [link]
Regional Stratigraphy Cantalejo, B., Pickering, K. T., McNiocaill, C., Bown, P., Johansen, K., Grant, M., 2021. A revised age-model for the Eocene deep-marine siliciclastic systems, Aínsa Basin, Spanish Pyrenees. Journal of the Geological Society, 178(1). [link]
Seismic data availability #1 Muñoz, J. A., Mencos, J., Roca, E., Carrera, N., Gratacós, O., Ferrer, O., Fernández, O., 2018. The structure of the South-Central-Pyrenean fold and thrust belt as constrained by subsurface data. Geologica Acta, 16(4), 439-460. [link]
Seismic data availability #2 Santolaria, P., Casas-Sainz, A. M., Soto, R., Casas, A., 2017. Gravity modelling to assess salt tectonics in the western end of the South Pyrenean Central Unit. Journal of the Geological Society, 174(2), 269-288. [link]
Seismic data availability #3 Fernández, O., Muñoz, J. A., Arbués, P., Falivene, O., 2012. 3D structure and evolution of an oblique system of relaying folds: the Ainsa basin (Spanish Pyrenees). Journal of the Geological Society, 169(5), 545-559. [link]
Available data (Structure) #1 Poblet, J., Muñoz, J. A., Travé, A., Serra-Kiel, J., 1998. Quantifying the kinematics of detachment folds using three-dimensional geometry: Application to the Mediano anticline (Pyrenees, Spain). Geological Society of America Bulletin, 110(1), 111-125. [link]
Available data (Structure) #2 Muñoz, J. A., Beamud, E., Fernández, O., Arbués, P., Dinarès‐Turell, J., Poblet, J., 2013. The Ainsa Fold and thrust oblique zone of the central Pyrenees: Kinematics of a curved contractional system from paleomagnetic and structural data. Tectonics, 32(5), 1142-1175. [link]
Available data (Structure) #3 Santolaria, P., Casas-Sainz, A. M., Soto, R., Casas, A., 2017. Gravity modelling to assess salt tectonics in the western end of the South Pyrenean Central Unit. Journal of the Geological Society, 174(2), 269-288. [link]
Available data (Structure) #4 Salvini, F., Storti, F., 2002. Three-dimensional architecture of growth strata associated to fault-bend, fault-propagation, and décollement anticlines in non-erosional environments. Sedimentary Geology, 146(1-2), 57-73. [link]
Available data (Structure) #5 Muñoz, J. A., Mencos, J., Roca, E., Carrera, N., Gratacós, O., Ferrer, O., Fernández, O., 2018. The structure of the South-Central-Pyrenean fold and thrust belt as constrained by subsurface data. Geologica Acta, 16(4), 439-460. [link]
Available data (Structure) #6 Cámara, P., Flinch, J. F., 2017. The southern Pyrenees: a salt-based fold-and-thrust belt. In Permo-Triassic Salt Provinces of Europe, North Africa and the Atlantic Margins (pp. 395-415). Elsevier. [link]
Available data (Analogue modelling) #1 n.a.
Available data (Analogue modelling) #2 n.a.
Available data (Analogue modelling) #3 n.a.
Available data (Gravimetry – Tomography) #1 Santolaria, P., Casas-Sainz, A. M., Soto, R., Casas, A., 2017. Gravity modelling to assess salt tectonics in the western end of the South Pyrenean Central Unit. Journal of the Geological Society, 174(2), 269-288. [link]
Available data (Gravimetry – Tomography) #2 Calvín, P., Santolaria, P., Casas, A. M., Pueyo, E. L., 2018. Detachment fold vs. ramp anticline: a gravity survey in the southern Pyrenean front (External Sierras). Geological Journal, 53(1), 178-190. [link]
Available data (Gravimetry – Tomography) #3 Ayala, C., Bohoyo, F., Maestro, A., Reguera, M. I., Torne, M., Rubio, F., Fernández, M., García-Lobón, J. L., 2016. Updated Bouguer anomalies of the Iberian Peninsula: a new perspective to interpret the regional geology. Journal of Maps, 12(5), 1089-1092. [link]
Available data (Geochemistry) #1 Thomson, K. D., Stockli, D. F., Clark, J. D., Puigdefàbregas, C., Fildani, A., 2017. Detrital zircon (U‐Th)/(He‐Pb) double‐dating constraints on provenance and foreland basin evolution of the Ainsa Basin, south‐central Pyrenees, Spain. Tectonics, 36(7), 1352-1375. [link]
Available data (Geochemistry) #2 n.a.
Available data (Geochemistry) #3 n.a.
Available data (Geochemistry) #4 n.a.
Available data (Petrophysics) #1 Santolaria, P., Casas-Sainz, A. M., Soto, R., Casas, A., 2017. Gravity modelling to assess salt tectonics in the western end of the South Pyrenean Central Unit. Journal of the Geological Society, 174(2), 269-288. [link]
Available data (Petrophysics) #2 Muñoz, J. A., Beamud, E., Fernández, O., Arbués, P., Dinarès‐Turell, J., Poblet, J., 2013. The Ainsa Fold and thrust oblique zone of the central Pyrenees: Kinematics of a curved contractional system from paleomagnetic and structural data. Tectonics, 32(5), 1142-1175. [link]
IGME Geological Map (MAGNA50) Sheet number 212-Campo. [link]
Other Maps #1 (source) Muñoz, J. A., Mencos, J., Roca, E., Carrera, N., Gratacós, O., Ferrer, O., Fernández, O., 2018. The structure of the South-Central-Pyrenean fold and thrust belt as constrained by subsurface data. Geologica Acta, 16(4), 439-460. [link]
Other Maps #2 (source) Santolaria, P., Casas-Sainz, A. M., Soto, R., Casas, A., 2017. Gravity modelling to assess salt tectonics in the western end of the South Pyrenean Central Unit. Journal of the Geological Society, 174(2), 269-288. [link]
Other related references #1 Teixell, A., Barnolas, A., 1995. Significado de la discordancia de Mediano en relación con las estructuras adyacentes (Eoceno, Pirineo Central). Geogaceta, 18, 34-37. [link]
Other related references #2 Poblet, J., 2020. Cartographic pattern of terminations of simple, parallel fault-bend folds, fault-propagation folds and detachment folds. Journal of Structural Geology, 138, 104135. [link]
Other related references #3 Cosma, M., Finotello, A., Ielpi, A., Ventra, D., Oms, O., D’Alpaos, A., Ghinassi, M., 2020. Piracy-controlled geometry of tide-dominated point bars: Combined evidence from ancient sedimentary successions and modern channel networks. Geomorphology, 370, 107402. [link]
Other related references #4 Izquierdo‐Llavall, E., Casas‐Sainz, A. M., Oliva‐Urcia, B., Villalaín, J. J., Pueyo, E., Scholger, R., 2018. Rotational kinematics of basement antiformal stacks: Paleomagnetic study of the western Nogueras Zone (Central Pyrenees). Tectonics, 37(10), 3456-3478. [link]