Geochemical and geochronological cross section of the deep Variscan crust: The Cabo Ortegal high-pressure nappe (northwestern Spain)

Tectonophysics

Volumn 177, Issue 1-3, 1990, Pages 263-292

  Peucat, J J ^a   Bernard Griffiths, J ^a   Ibarguchi, J I Gil ^b   Dallmeyer, R D ^c   Menot, R P ^d   Cornichet, J ^a   De Leon, M Iglesias Ponce ^a  

^a CNRS   (France)

^b UNIVERSITY OF THE BASQUE COUNTRY UPV EHU   (Spain)

^c UNIVERSITY OF GEORGIA   (United States)

^d UNIVERSITÉ JEAN MONNET   (France)

Author keywords

[No Author keywords available]

Indexed keywords

CRUST; GEOCHEMISTRY; GEOCHRONOLOGY; HIGH PRESSURE METAMORPHISM; VARISCAN;

SPAIN, GALICIA, CABO ORTEGAL COMPLEX;

EID: 0025224285     PISSN: 00401951     EISSN: None     Source Type: Journal    
DOI: 10.1016/0040-1951(90)90285-G     Document Type: Article

References (86)

1. Etude pétrographique et structurale des régions du Morais — Bragança (NE Portugal)
2. Evolucion petrologica y geoquimica de la unidad aloctona inferior del complejo metamorfico basicoultrabasico de Cabo Ortegal (Unidad de Moeche) y del Silurico paraautoctono, Cadena Hercinica Ibérica (NW de Espana)
3. Tectonostratigraphic units in the complexes with mafic and related rocks of the NW of the Iberian Massif
4. Le métamorphisme éclogitique dans la nappe hercynienne de Champtoceaux (Massif Armoricain)
5. Reversal of Fe-Mg partitioning between garnet and staurolite in eclogite-facies metapelites from the Champtoceaux nappe (Brittany France)
6. Evolucion metamórfica de lasrocas pelíticas y semipelíticas de las formaciones “banded gneisses” y “gneises de Cariño” (Cabo Ortegal, NW España)
7. Is the mafic-ultramafic massif of Cabo Ortegal (northwest Spain) a nappe emplaced during a Variscan obudction? a new gravity interpretation
8. Les péridotites de Bay of Islands (Terre Neuve) et de Cap Ortegal (Espagne): approche pétrostructurale
9. U-Pb, Nd isotope and REE geochemistry in eclogites from the Cabo Ortegal Complex, Galicia, Spain: an example of REE immobility conserving MORB-like patterns during high-grade metamorphism
10. Petrogenesis of Hercynian leucogranites from the southern Armorican Massif: contribution of REE and isotopic (Sr. Nd, Pb and O) geochemical data to the study of source rock characteristics and ages
11. Relations entre les comportements contrastés de l'alumine et du fer dans la différenciation des séries tholéiites et calcoalcalines
12. Geochemistry of ophiolites from the Chamrousse complex (Belledonne massif Alps)
13. Les métabasites de la série de Marvejols: témoins d'un magmatisme tholéïtique d'arrière arc
14. Diversité géochimique des métabasites des groupes leptynoamphiboliques du Rouergue et de Marvejols (Massif Central). Origine et implications
15. Absolute isotopic abundance ratios of common equal-atom and radiogenic lead isotope standards
16. Uranium-lead isotope ages from the southern Sierra Nevada Batholith and adjacent areas, California
17. 39Ar mineral ages
18. 39Ar dating using the geological Survey TRIGA reactor: U.S.
19. Neodymium Isotope Geochemistry: An Introduction
20. Closure temperature in cooling geochronological and petrological systems
21. The geochemistry of high-pressure gneisses from Cabo Ortegal (NW Spain): residues of deep anatexis
22. Datation en Montagne Noire d'un témoin d'une phase majeure d'amincissement crustal caractéristique de l'Europe pré-varisque
23. The Karoo igneous province—a problem area for inferring tectonic setting from basalt geochemistry
24. The catazonal polymetamorphic rocks of Cabo Ortegal (NW Spain): a structural and petrofabric study
25. U-Pb zircon and Rb-Sr whole rock dating of low-grade metasediments. Example: Montagne Noire (Southern France)
26. U-Pb zircon and Rb-Sr mineral dating of eclogues and their country rocks. Example: Münchberg gneiss massif, Northeast Bavaria
27. Archaean zircons in a retrograded, Caledonian eclogite of Gotthard Massif (Central Alps, Switzerland)
28. Eclogites and granulites in the Cabo Ortegal Complex (Northwestern Spain)
29. Geochemistry of Leptyno-amphibolite complex from Haut-Allier (French Massif Central)
30. Age of the Archean Talga-Talga subgroup, Pilbara Block, Western Australia and early evolution of the mantle: new Sm-Nd isotopic evidence
31. Archéen et Protérozoïque dans la chaîne ouest-européenne: géochimie isotopique (Sr-Nd-Pb) et géochronologie U-Pb sur zircons
32. Archean protoliths within lower Proterozoic granulitic crust of the West European Hercynian belt possible relics of the West African craton
33. 40Ar in hornblende
34. Nd and Sr isotopic study of the Bay of Islands ophiolite complex and the evolution of the source of mid-ocean ridge basalts
35. Introduction to geochronology
36. Caractérisation et signification géodynamique des orthogneiss calco-alcalins d'âge ordovicien de Bretagne méridionale
37. Patterns of U-Pb zircon and monazite ages in polymetamorphic units of the Swiss Central Alps
38. A low contamination method for decomposition of zircon and the extraction of U and Pb for isotopic age determinations
39. Improved accuracy of U-Pb zircon ages by creation of more concordant systems using an air abrasion technique
40. U-Pb systematics and the petrogenetic evolution of infracrustal rocks in the Paleozoic basement of western Galicia (NW Spain)
41. Late Archaean-Early Proterozoic source ages of zircons in rocks from the Palaeozoic Orogen of Western Galicia, NW Spain
42. Radiochronologie U-Pb de Porthogneiss alcalin de Pedroso (Alto Alentejo, Portugal) et évolution anté-hercynienne de l'Europe occidentale
43. Chemical petrology of polymetamorphic ultramafic rocks from Galicia, NW Spain
44. Tectonics and plate tectonics model for the Variscan belt of Europe
45. Seismic signature and tectoniccross section of the Variscan crust in Western France
46. Les rapports tectoniques entre le Précambrien ancien et le Paléozoïque dans le Nord-Ouest de la Péninsule Ibérique: grandes nappes ou extrusions?
47. A neodymium, strontium and oxygen isotopic study of the Cretaceous Samail ophiolite and implications for the petrogenesis and seawater-hydrothermal alteration of oceanic crust
48. 496 Ma age of plagiogranites in the Chamrousse ophiolite complex (external crystalline massifs in the French Alps) evidence of a lower Paleozoic oceanization
49. Les associations magmatiques acide-basique paléozoïques et les complexes leptyno-amphiboliques. Les corrélations hasardeuses. Exemple du massif de Belledonne (Alpes occidentales)
50. Nd isotopes in French shales: external vs internal aspects of crustal evolution
51. Comportement des systèmes isotopiques U-Pb et Sm-Nd dans le métamorphisme éclogitique. Chaîne hercynienne et chaîne alpine
52. The relationship between major element chemistry and tectonic setting of basic and intermediate volcanic rocks
53. Behaviour of Rb-Sr whole rock and U-Pb zircon systems during partial melting as shown in migrnatitic gneisses from the St Malo massif, NE Brittany, France
54. Rb-Sr and U-Pb dating of the blueschists of the Ile de Groix
55. Precambrian U-Pb zircon ages in eclogites and garnet pyroxenites from South Brittany (France): an old oceanic crust in the West European Hercynian belt?
56. Continental crust formation seen through the Sr and Nd isotope systematics of S-type granites in the Hercynian belt of Western France
57. Sr, Nd and Pb isotopic systematics in the Archean low-to-high-grade transition zone of southern India: synaccretion vs. post accretion granulites
58. L'origine des amphibolites: approches géochimiques et mathématiques. Application aux amphibolites du Massif Central français
59. U-Pb dating of an early Paleozoic bimodal magmatism in the French Massif Central and its further metamorphic evolution
60. A Sm-Nd isotopic study of 500 Ma old oceanic crust in the Variscan belt of Western Europe: the Chamrousse ophiolitic complex, Western Alps (France)
61. Granulites and related rocks in Variscan median Europe: a dualistic interpretation
62. K-Ar ages on rock-forming minerals from the Central Alps
63. 39Ar and Rb-Sr age determinations on Quaternary volcanic rocks
64. Sur la structure de Tras-os-Montes (Nord-Est du Portugal)
65. Structure of Centro-Iberian allochthon in northern Portugal
66. Catazonal complexes of North-West Spain and North Portugal remnants of a Hercynian thrust plate
67. Radiogenic argon diffusion in muscovite under hydrothermal conditions
68. 39Ar dating: a discussion
69. 39Ar analysis
70. The rare earth element
71. Subcommission on geochronology convention on the use of decay constants in geoand cosmochronology
72. Continental flood basalts…arachnids rule OK?
73. A mantle-plume model interpretation for the Paleozoic geology of Galicia with emphasis on the Cabo Ortegal area (NW Spain)
74. Geochemistry of the polymetamorphic mafic-ultramafic complex at Cabo Ortegal (NW Spain)
75. Isotopic dating of older elements (including the Cabo Ortegal mafic-ultramafic complex) in the Hercynian Orogen of NW Spain: Manifestations of a presumed Early Paleozoic mantle-plume
76. The Palaeozoic strata near Moeche in Galicia, NW Spain
77. A gravity investigation of the catazonal rock complex at Cabo Ortegal (NW Spain)
78. Experimental determination of the fluid-absent melting relations in the pelitic system. Consequences for crustal differentiation
79. Petrology of an eclogite and pyrigarnet bearing polymetamorphic rock complex at Cabo Ortegal, NW Spain
80. Radiometric evidence for a Precambrian metamorphic event in NW Spain
81. Cooling ages derived by apatite fission tracks and mica Rb-Sr and K-Ar dating: the uplift and cooling history of Central Alps
82. Hf-Nd-Sr isotopes and incompatible element abundances in island arcs: implication for magma origins and crust-mantle evolution
83. The geochemistry of ophiolitic mafic rocks from the polymetamorphic Ordenes complex Spain
84. Least square fitting of a straight line with correlated errors