Imaging the crustal structure of the Central Iberian Zone (Variscan Belt): The ALCUDIA deep seismic reflection transect

Tectonics

Volumn 31, Issue 3, 2012, Pages

  Martinez Poyatos D ^a   Carbonell, R ^b   Palomeras, I ^b,c   Simancas, J F ^a   Ayarza, P ^d   Marti D ^b   Azor, A ^a   Jabaloy, A ^a   Gonzalez Cuadra P ^e   Tejero, R ^f   Martin Parra L M ^e   Matas, J ^e   Gonzalez Lodeiro F ^a   Perez Estaun A ^b   Garcia Lobon J L ^e   Mansilla, L ^g  

^a UNIVERSITY OF GRANADA   (Spain)

^b INSTITUTE OF EARTH SCIENCES JAUME ALMERA   (Spain)

^c RICE UNIVERSITY   (United States)

^d UNIVERSITY OF SALAMANCA   (Spain)

^e INSTITUTO GEOLÓGICO Y MINERO DE ESPAÑA   (Spain)

^f UNIVERSIDAD COMPLUTENSE DE MADRID   (Spain)

^g UNIVERSITY OF CASTILLA LA MANCHA   (Spain)

Author keywords

[No Author keywords available]

Indexed keywords

REFLECTION;

ACQUISITION PARAMETERS; CRUSTAL STRUCTURE; DEEP SEISMIC REFLECTIONS; HIGH RESOLUTION; LOWER CRUST; OROGENIC CRUST; PROCESSED IMAGES; SEISMIC IMAGE; SEISMIC REFLECTIONS; STRUCTURAL STYLES; UPPER CRUST; VARISCAN; VARISCAN BELT; VARISCAN OROGEN;

SEISMIC WAVES;

CRUSTAL STRUCTURE; DEFORMATION; FAULT ZONE; HERCYNIAN OROGENY; LOWER CRUST; MANTLE; MOHO; SEISMIC REFLECTION; TECTONIC WEDGE; THRUST; TRANSECT; UPPER CRUST;

CENTRAL IBERIAN ZONE; SPAIN;

EID: 84862578729     PISSN: 02787407     EISSN: None     Source Type: Journal    
DOI: 10.1029/2011TC002995     Document Type: Article

References (74)

1. Allmendinger, R. W., T. A. Hauge, E. Hauser, C. J. Potter, S. L. Klemperer, K. D. Nelson, P. Knuepfer, and J. Oliver (1987), Overview of the COCORP 40°N Transect, western United States: The fabric of an orogenic belt, Geol. Soc. Am. Bull., 98(3), 308-319, doi:10.1130/0016-7606(1987) 98<308:OOTCNT>2.0.CO;2.
2. Andonaegui, P. (1990), Geoquímica y geocronología de los granitoides al sur de Toledo, PhD thesis, 357 pp, Univ. Complutense, Madrid. Arenas, R., J. R. Martínez Catalán, S. Martínez Sánchez, J. Fernández Suárez,
3. P. Andonaegui, and J. A. Pearce (2007), The Vila de Cruces ophiolite: A remnant of the early Rheic Ocean in the Variscan suture of Galicia (northwest Iberian Massif), J. Geol., 115(2), 129-148, doi:10.1086/510645.
4. Ayarza, P., J. R. Martínez Catalán, J. Gallart, J. A. Pulgar, and J. J. Dañobeitia (1998), Estudio Sísmico de la Corteza Ibérica Norte 3.3: A seismic image of the Variscan crust in the hinterland of the NW Iberian Massif, Tectonics, 17(2), 171-186, doi:10.1029/97TC03411.
5. Ayarza, P., J. R. Martínez Catalán, J. Alvarez- Marrón, H. Zeyen, and C. Juhlin (2004), Geophysical constraints on the deep structure of a limited ocean-continent subduction zone at the North Iberian Margin, Tectonics, 23, TC1010, doi:10.1029/2002TC001487.
6. Azor, A., F. González Lodeiro, and J. F. Simancas (1994), Tectonic evolution of the boundary between the Central Iberian and Ossa-Morena zones (Variscan Belt, SW Spain), Tectonics, 13, 45-61, doi:10.1029/93TC02724.
7. Azor, A., D. Rubatto, J. F. Simancas, F. González Lodeiro, D. Martínez Poyatos, L. M. Martín Parra, and J. Matas (2008), Rheic Ocean ophiolitic remnants in Southern Iberia questioned by SHRIMP U-Pb zircon ages on the Beja-Acebuches amphibolites, Tectonics, 27, TC5006, doi:10.1029/2008TC002306.
8. Barbero, L. (1995), Granulite-facies metamorphism in the Anatectic Complex of Toledo, Spain: Late hercynian tectonic evolution by crustal extension, J. Geol. Soc., 152(2), 365-382, doi:10.1144/gsjgs.152.2.0365.
9. Braid, J. A., J. B. Murphy, C. Quesada, and J. Mortensen (2011), Tectonic escape of a crustal fragment during the closure of the Rheic Ocean: U-Pb detrital zircon data from the Late Palaeozoic Pulo do Lobo and South Portuguese zones, southern Iberia, J. Geol. Soc., 168, 383-392, doi:10.1144/0016-76492010- 104.
10. Brown, L. D., C. J. Ando, S. L. Klemperer, J. E. Oliver, S. Kaufman, B. L. Walsh, T. Czuchra, and Y. W. Isachsen (1983), Adirondack-Appalachian Crustal Structure: The COCORP Northeast Traverse, Geol. Soc. Am. Bull., 94, 1173-1184, doi:10.1130/0016-7606(1983)94<1173:ACSTCN>2.0. CO;2.
11. Brun, J.-P. (2002), Deformation of the continental lithosphere: Insights from brittle-ductile models, in Deformation Mechanisms, Rheology and Tectonics: Current Status and Future Perspectives, edited by S. De Meer et al., Geol. Soc. Spec. Publ., 200, 355-370, doi:10.1144/GSL. SP.2001.200.01.20.
12. Burg, J.-P., M. Iglesias, P. Laurent, P. Matte, and A. Ribeiro (1981), Variscan intracontinental deformation: The Coimbra-Córdoba Shear Zone (SW Iberian Peninsula), Tectonophysics, 78, 161-177, doi:10.1016/0040-1951(81) 90012-3.
13. Burg, J.-P., P. Davy, and J. Martinod (1994), Shortening of analogue models of the continental lithosphere: New hypothesis for the formation of the Tibetan plateau, Tectonics, 13(2), 475-483, doi:10.1029/93TC02738.
14. Carbonell, R., A. Pérez-Estaún, J. Gallart, J. Díaz, S. Kashubin, J. Mechie, R. Stadtlander, A. Schulze, J. H. Knapp, and A. Morozov (1996), Crustal root beneath the Urals: wide-angle seismic evidence, Science, 274, 222-224, doi:10.1126/science.274.5285.222.
15. Carbonell, R., D. Lecerf, M. Itzin, J. Gallart, and D. Brown (1998), Mapping the Moho beneath the Southern Urals with wide-angle reflections, Geophys. Res. Lett., 25(22), 4229-4232, doi:10.1029/1998GL900107.
16. Carbonell, R., J. Gallart, A. Pérez-Estaún, J. Díaz, S. Kashubin, J. Mechie, F. Wenzel, and J. H. Knapp (2000), Seismic wide-angle constraints on the crust of the southern Urals, J. Geophys. Res., 105(B6), 13,755-13,777, doi:10.1029/2000JB900048.
17. Carbonell, R., J. Gallart, and A. Pérez-Estaún (2002), Modelling and imaging the Moho transition: The case of the southern Urals, Geophys. J. Int., 149, 134-148, doi:10.1046/j.1365-246X.2002.01623.x.
18. Carbonell, R., J. F. Simancas, C. Juhlin, J. Pous, A. Pérez-Estaún, F. González Lodeiro, G. Muñoz, W. Heise, and P. Ayarza (2004), Geophysical evidence of a mantle derived intrusion in SW Iberia, Geophys. Res. Lett., 31, L11601, doi:10.1029/2004GL019684.
19. Cook, F. A. (2002), Fine structure of the continental reflection Moho, Geol. Soc. Am. Bull., 114(1), 64-79, doi:10.1130/0016-7606(2002)114<0064: FSOTCR>2.0.CO;2.
20. Cook, F. A., D. S. Albaugh, L. D. Brown, S. Kaufman, J. E. Oliver, and R. D. Hatcher (1979), Thin skinned tectonics in the crystalline southern Appalachians. COCORP Seismic Reflection profiling of the Blue Ridge and Piedmont, Geology, 7(12), 563-567, doi:10.1130/0091-7613(1979) 7<563:TTITCS>2.0.CO;2.
21. Cook, F. A., A. J. van der Velden, and K. W. Hall (1999), Frozen subduction in Canada's Northwest Territories: Lithoprobe deep lithospheric reflection profiling of the western Canadian Shield, Tectonics, 18, 1-24, doi:10.1029/1998TC900016.
22. Cook, F. A., D. J. White, A. G. Jones, D. W. S. Eaton, J. Hall, and R. M. Clowes (2010), How the crust meets the mantle: Lithoprobe perspectives on the Mohorovicic discontinuity and crust-mantle transition, Can. J. Earth Sci., 47(4), 315-351, doi:10.1139/EE09-076.
23. Culshaw, N. G., C. Beaumont, and R. A. Jamieson (2006), The orogenic suprastructure-infraestructure concept: Revisited, quantified and revived, Geology, 34, 733-737, doi:10.1130/G22793.1.
24. Davy, P., and P. Cobbold (1991), Experiments on shortening of a 4-layer model of the continental lithosphere, Tectonophysics, 188, 1-25, doi:10.1016/0040-1951(91)90311-F.
25. DEKORP Research Group (1985), First results and preliminary interpretation of deep-reflection seismic recording along profile DEKORP 2-South, J. Geophys., 57, 137-165.
26. DEKORP Research Group (1988), Results of the DEKORP 4/KTB Oberpfalz deep seismic reflection investigations, J. Geophys., 62, 69-101.
27. Díez Balda, M. A., R. Vegas, and F. González Lodeiro (1990), Central-Iberian Zone. Autochthonous Sequences. Structure, in Pre-Mesozoic Geology of Iberia, edited by R. D. Dallmeyer and E. Martínez García, pp. 172-188, Springer, Berlin.
28. Echtler, H. P., M. Stiller, F. Steinhoff, C. Krawczyk, A. Suleimanov, V. Spiridonov, J. H. Knapp, Y. Menshikov, J. Álvarez-Marrón, and N. Yunusov (1996), Preserved collisional crustal structures of the Southern Urals revealed by vibroseis profiling, Science, 274, 224-226, doi:10.1126/science.274. 5285.224.
29. ECORS Pyrenean Team (1988), The ECORS deep reflection seismic survey across the Pyrenees, Nature, 331, 508-511, doi:10.1038/331508a0.
30. Franke, W. (2000), The mid-European segment of the Variscides: Tectonostratigraphic units, terrane boundaries and plate tectonic evolution, in Orogenic Processes: Quantification and Modelling in the Variscan Belt, edited by W. Franke et al., Geol. Soc. Spec. Publ., 179, 35-61, doi:10.1144/GSL.SP.2000. 179.01.05.
31. Freeman, B., S. L. Klemperer, and R. W. Hobbs (1988), The deep structure of the northern England and the Iapetus suture zone from BIRPS deep seismic reflection profiling, J. Geol. Soc., 145, 727-740, doi:10.1144/gsjgs.145.5.0727.
32. Friberg, M., D. Juhlin, M. Beckholmen, G. A. Petrov, and A. G. Green (2002), Palaeozoic tectonic evolution of the Middle Urals in the light of the ESRU seismic experiments, J. Geol. Soc., 159(3), 295-306, doi:10.1144/0016- 764900-189.
33. Gebrande, H., E. Lüschen, B. Lammerer, and O. Oncken (2001), European orogenic processes-research transects the Eastern Alps, Eos Trans. AGU, 82(40), 453, doi:10.1029/01EO00269.
34. Gómez-Pugnaire, M. T., A. Azor, J. M. Fernández Soler, and V. López Sánchez-Vizcaíno (2003), The amphibolites from the Ossa-Morena/Central Iberian Variscan suture (southwestern Iberian Massif): Geochemistry and tectonic interpretation, Lithos, 68(1-2), 23-42, doi:10.1016/S0024-4937(03)00018-5.
35. Griffin, W. L., and S. Y. O'Reilly (1987), Is the continental Moho the crustmantle boundary?, Geology, 15(3), 241-244, doi:10.1130/0091-7613 (1987)15<241:ITCMTC>2.0.CO;2.
36. Hammer, P. T. C., and R. N. Clowes (1997), Moho reflectivity patterns-A comparison of Canadian LITHOPROBE transects, Tectonophysics, 269(3-4), 179-198, doi:10.1016/S0040-1951(96)00164-3.
37. Hernández Enrile, J. L. (1991), Extensional tectonics of the Toledo ductilebrittle sheaar zone, central Iberian Massif, Tectonophysics, 191(3-4), 311-324, doi:10.1016/0040-1951(91)90064-Y.
38. Hynes, A., and D. B. Snyder (1995), Deep-crustal mineral assemblages and potential for crustal rocks below the Moho in the Scottish Caledonides, Geophys. J. Int., 123(2), 323-339, doi:10.1111/j.1365-246X.1995. tb06857.x.
39. Juhlin, C., M. Friberg, H. P. Echtler, T. Hismatulin, A. Rybalka, A. G. Green, and J. Ansorge (1998), Crustal structure of the Middle Urals: results from the ESRU experiments, Tectonics, 17(5), 710-725, doi:10.1029/98TC02762.
40. Julivert, M., M. Fontboté, A. Ribeiro, and L. E. Conde (1972), Mapa y Memoria Explicativa del Mapa Tectónico de la Península Ibérica y Baleares, scale 1:1,000,000, 113 pp., Inst. Geol. y Min. de Esp., Madrid.
41. Julivert, M., J. M. Vegas, J. M. Roiz, and A. Martínez Rius (1983), La estructura de la parte SE de la Zona Centroibérica, con metamorfismo de bajo grado, in Geología de España, Libro Jubilar de J. M. Ríos, edited by J. A. Comba, pp. 477-489, Inst. Geol. y Min. de Esp., Madrid.
42. Klemperer, S. L., and D. H. Matthews (1987), Iapetus Suture located beneath the North Sea by BIRPS deep seismic reflection profiling, Geology, 15, 195-198, doi:10.1130/0091-7613(1987)15<195:ISLBTN>2.0.CO;2.
43. Klemperer, S. L., T. A. Hauge, E. C. Hauser, J. E. Oliver, and C. J. Potter (1986), The Moho in the northern Basin and Range Province, Nevada, along the COCORP 40°N seismic-reflection transect, Geol. Soc. Am. Bull., 97, 603-618, doi:10.1130/0016-7606(1986)97<603:TMITNB>2.0.CO;2.
44. Lotze, F. (1945), Zur gliederung der Variszichen der lberischen Meseta, Geotekton. Forsch., 6, 78-92.
45. Martínez Catalán, J. R., et al. (1995), Results from the ESCI-N3.3 marine deep seismic profile along the Cantabrian continental margin, Rev. Soc. Geol. Esp., 8, 341-354.
46. Martínez Poyatos, D. (2002), Estructura del borde meridional de la Zona Centroibérica y su relación con el contacto entre las Zonas Centroibérica y de Ossa-Morena, Lab. Xeol. Laxe, Ser. Nova Terra, vol. 18, 295 pp., Do Castro, Coruña, Spain.
47. Martínez Poyatos, D., J. F. Simancas, A. Azor, and F. González Lodeiro (1998), Evolution of a Carboniferous piggyback basin in the southern Central Iberian Zone (Variscan Belt, SE Spain), Bull. Soc. Geol. Fr., 169, 573-578.
48. Martínez Poyatos, D., F. González Lodeiro, A. Azor, and J. F. Simancas (2001a), La estructura de la Zona Centroibérica en la región de Los Pedroches (Macizo Ibérico meridional), Rev. Soc. Geol. Esp., 14, 147-160.
49. Martínez Poyatos, D., F. Nieto, A. Azor, and J. F. Simancas (2001b), Relationships between very low-grade metamorphism and tectonic deformation: Examples from the southern Central Iberian Zone (Iberian Massif, Variscan Belt), J. Geol. Soc., 158, 953-968, doi:10.1144/0016-764900-206.
50. Martín Parra, L. M., F. González Lodeiro, D. Martínez Poyatos, and J. Matas (2006), The Puente Genave-Castelo de Vide shear zone (southern Central Iberian Zone, Iberian Massif): geometry, kinematics and regional implications, Bull. Soc. Geol. Fr., 177(4), 191-202, doi:10.2113/gssgfbull.177.4.191.
51. Matte, P. (2001), The Variscan collage and orogeny (480-290 Ma) and the tectonic definition of the Amorica microplate: A review, Terra Nova, 13, 122-128, doi:10.1046/j.1365-3121.2001.00327.x.
52. McCarthy, J., and G. A. Thompson (1988), Seismic imaging of extended crust with emphasis on the western United States, Geol. Soc. Am. Bull., 100(9), 1361-1374, doi:10.1130/0016-7606(1988)100<1361:SIOECW>2.3.CO;2.
53. Meissner, R. (1999), Terrane accumulation and collapse in central Europe: Seismic and rheological constraints, Tectonophysics, 305(1-3), 93-107, doi:10.1016/S0040-1951(99)00016-5.
54. Mooney, W. D., and R. Meissner (1992), Multi-genetic origin of crustal reflectivity: A review of seismic reflection profiling of the continental lower crust and Moho, in Continental Lower Crust, edited by D. M. Fountain, R. Arculus, and R. W. Kay, pp. 179-200, Elsevier, Amsterdam.
55. Onken, O., A. Plesh, J. Weber, W. Ricken, and S. Schrader (2000), Passive margin detachment during arc-continent collision (central European Variscides), in Orogenic Processes: Quantification and Modelling in the Variscan Belt, edited by W. Franke et al., Geol. Soc. Spec. Publ., 179, 9-20.
56. Ordóñez Casado, B. (1998), Geochronological studies of the Pre-Mesozoic basement of the Iberian Massif: The Ossa-Morena Zone and the Allochthonous Complexes within the Central Iberian Zone, PhD thesis, 235 pp., ETH Zurich, Zurich, Switzerland.
57. Ortega Gironés, E. (1986), Geology and metallogeny of the Almadén area, Centro-Iberian Zone, Spain, in Remote Sensing in Mineral Exploration, edited by V. Wambeke, EEC. Rep. 11317, pp. 147-173, Eur. Econ. Comm., Brussels.
58. Palomeras, I., R. Carbonell, I. Flecha, J. F. Simancas, P. Ayarza, J. Matas, D. Martínez Poyatos, A. Azor, F. González Lodeiro, and A. Pérez-Estaún (2009), Nature the lithosphere across the Variscan orogen of SW Iberia: Dense wide-angle seismic reflection data, J. Geophys. Res., 114, B02302, doi:10.1029/2007JB005050.
59. Palomeras, I., R. Carbonell, P. Ayarza, D. Martí, D. Brown, and J. F. Simancas (2011), Shear wave modeling and Poisson's ratio in the Variscan Belt of SW Iberia, Geochem. Geophys. Geosyst., 12, Q07008, doi:10.1029/ 2011GC003577.
60. Pereira, M. F., J. B. Silva, K. Drost, M. Chichorro, and A. Apraiz (2010), Relative timing of transcurrent displacements in northern Gondwana: U-Pb laser ablation ICP-MS zircon and monazite chronology of gneisses and sheared granites from the western Iberian Massif (Portugal), Gondwana Res., 17, 461-481, doi:10.1016/j.gr.2009.08.006.
61. Pérez-Estaún, A., J. R. Martínez Catalán, and F. Bastida (1991), Crustal thickenning and deformation sequence in the football to the suture of the Hercynian Belt of NW Spain, Tectonophysics, 191, 243-253, doi:10.1016/0040-1951(91)90060-6.
62. Pérez-Estaún, A., J. A. Pulgar, E. Banda, J. Álvarez-Marrón, and the ESCI-N Research Group (1994), Crustal structure of the external variscides in northern Spain from deep seismic reflection profiling, Tectonophysics, 232, 91-118, doi:10.1016/0040-1951(94) 90078-7.
63. Pérez-Estaún, A., J. A. Pulgar, J. Álvarez- Marrón, and the ESCI-N Group (1995), Crustal structure of the Cantabrian Zone: Seismic image of a Variscan foreland thrust and fold belt (NW Spain), Rev. Soc. Geol. Esp., 8, 307-320.
64. Pous, J., et al. (2011), Constraints on the crustal structure of the internal Variscan Belt in SW Europe: A magnetotelluric transect along the eastern part of Central Iberian Zone, Iberian Massif, J. Geophys. Res., 116, B02103, doi:10.1029/2010JB007538.
65. Pulgar, J. A., A. Pérez-Estaún, J. Gallart, J. Álvarez-Marrón, J. Gallastegui, J. L. Alonso, and the ESCI-N Group (1995), The ESCIN-2 deep seismic reflection profile: A traverse across the Cantabrian Mountains and adjacent Duero basin, Rev. Soc. Geol. Esp., 8, 383-394.
66. Robardet, M. (2002), Alternative approach to the Variscan Belt in southwestern Europe: Preorogenic paleobiogeographical constraints, in Variscan-Appalachian Dynamics: The building of the Late Paleozoic Basement, edited by J. R. Martínez Catalán et al., Spec. Pap. Geol. Soc. Am., 364, 1-15.
67. Rodríguez-Alonso, M. D., M. Peinado, M. López-Plaza, P. Franco, A. Carnicero, and J. C. Gonzalo (2004), Neoproterozoic-Cambrian synsedimentary magmatism in the Central Iberian Zone (Spain): geology, petrology and geodynamic significance, Int. J. Earth Sci., 93(5), 897-920, doi:10.1007/s00531-004-0425-4.
68. Schmelzbach, C., C. Juhlin, R. Carbonell, and J. F. Simancas (2007), Prestack and poststack migration of crooked-line seismic reflection data: A case study from the South Portuguese Zone fold belt, southwestern Iberia, Geophysics, 72(2), 9-18, doi:10.1190/1.2407267.
69. Simancas, J. F., et al. (2003), The crustal structure of the transpresional Variscan Orogen of the SW Iberia: The IBERSEIS Deep Seismic Reflection Profile, Tectonics, 22(6), 1062, doi:10.1029/2002TC001479.
70. Smithson, S. B. (1989), Contrasting types of lower crust, in Properties and Processes of Earth's Lower Crust, Geophys. Monogr. Ser, vol. 51, edited by R. F. Mereu, S. Mueller, and D. M. Fountain, pp. 53-63, AGU, Washington, D. C., doi:10.1029/GM051p0053.
71. Tait, J., M. Schätz, V. Bachtadse, and H. Soffel (2000), Palaeomagnetism and Palaeozoic palaeogeography of Gondwana and European terranes, in Orogenic Processes: Quantification and Modelling in the Variscan Belt, edited by W. Franke et al., Geol. Soc. Spec. Publ., 179, 21-34, doi:10.1144/GSL.SP.2000.179.01.04.
72. Tryggvason, A., D. Brown, and A. Pérez-Estaún (2001), Crustal architecture of the southern Uralides from true amplitude processing of the URSEIS vibroseis profile, Tectonics, 20, 1040-1052, doi:10.1029/ 2001TC900020.
73. Vidal, G., S. Jensen, and T. Palacios (1994), Neoproterozoic (Vendian) ichnofossils from Lower Alcudian strata in central Spain, Geol. Mag., 131, 169-179, doi:10.1017/S0016756800010700.
74. Yilmaz, O. (2001), Seismic Data Analysis, Invest. Geophys., vol. 10, edited by S. M. Doherty, 2027 pp., Soc. of Explor. Geophys., Tulsa, Okla.