138-121 Ma asthenospheric magmatism prior to continental break-up in the North Atlantic and geodynamic implications

Earth and Planetary Science Letters

Volumn 181, Issue 4, 2000, Pages 555-572

  Schärer, Urs ^a   Girardeau, Jacques ^b   Cornen, Guy ^b   Boillot, Gilbert ^c  

^a UNIVERSITÉ PARIS DESCARTES   (France)

^b UNIVERSITÉ DE NANTES   (France)

^c LABORATOIRE D OCÉANOGRAPHIE DE VILLEFRANCHE   (France)

Author keywords

Absolute age; Continental margin; Hafnium; Isotopes; Magmatism; North Atlantic; Rifting; U Pb

Indexed keywords

ASTHENOSPHERE; CONTINENTAL BREAKUP; GEODYNAMICS; MESOZOIC; TECTONIC RECONSTRUCTION;

(NORTH); ATLANTIC OCEAN;

EID: 0033784774     PISSN: 0012821X     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0012-821X(00)00220-X     Document Type: Article

References (53)

1. The formation of passive margins: Constraints from the crustal structure and segmentation of the deep Galicia margin, Spain
2. Sampling and observation of mantle and crust on Gorringe Bank
3. Structure and kinematics of emplacement of peridotites uplifted during continental rifting results of the Galinaute dives on Galicia margin (Spain)
4. Structure de la transition continent-ocean d'une marge passive: Sismique reflexion multitrace dans la Plaine Abyssale Iberique (Portugal)
5. The rifting of the Galicia margin: Crustal thinning and emplacement of mantle rocks on the sea floor
6. Undercrusting by serpentinite beneath rifted margins
7. A lithospheric syn-rift shear zone at the Ocean-Continent transition: Preliminary results of the Galinaute II cruise (Nautile dives on the Galicia Bank, Spain)
8. Intraoceanic tectonism of the Gorringe Bank: Observation by submersible
9. Gabbro and related rock emplacement beneath rifting continental crust: Galicia passive margin, Spain
10. Plagioclase bearing ultramafic tectonites from the Galicia margin (Leg 103 Site 637): Comparison of their origin and evolution with low-pressure ultramafic bodies in Western Europe
11. Iberia Abyssal plain
12. Interaction entre lithosphere et asthenosphere au cours de l'ouverture oceanique: Donnees isotopiques preliminaires sur la marge passive de Galice (Atlantique-Nord)
13. Extensional tectonics in the Gorringe Bank rocks. Eastern Atlantic Ocean witness of an oceanic ultra slow mantellic accreting center
14. Petrologic characteristics of the ultramafic rocks from the Ocean-Continent transition in the Iberia Abyssal Plain
15. C. Basalts, underplated gabbros and pyroxenites record the rifting process of the West Iberian margin
16. Geochemistry of metamorphosed cumulate gabbros from Hole 900A, Iberia Abyssal Plain
17. 39Ar ages for the alkaline volcanism and basement of the Gorringe Bank, North Atlantic Ocean
18. Petrology of the alkaline volcanism of Gorringe Bank (Southwest Portugal)
19. Continental lithospheric contribution to alkaline magmatism: Isotopic (Nd, Sr, Pb) and geochemical (REE) evidence from Serra de Monchique and Mount Ormonde complexes
20. Iberia Abyssal plain
21. Serpentinized peridotite breccia and olistostrome upon basement highs of the Iberia Abyssal Plain: Implication in tectonic margin evolution
22. Petrology and mineralogy of dredged gabbro from Gettysburg Bank, Eastern Atlantic
23. Le metamorphisme dans la croute oceanique: Apport de la petrologie a la comprehension des phenomenes de circulation hydrothermale et de deformation
24. New data on the structure of the Gorringe ridge in the North Atlantic
25. The origin of oceanic plagiogranites from the Karmoy ophiolite, Western Norway
26. Les basaltes de la marge de Galice (NO de la Peninsule Iberique): Heterogeneite des spectres de terres rares la transition Continent-Ocean. Donnees geochimiques preliminaires
27. Gorringe Bank: Site 120
28. Lower Cretaceous foraminifera fauna from Gorringe Bank, Eastern North Atlantic
29. K-Ar data for the age and evolution of Gettysburg Bank, North Atlantic Ocean
30. 39Ar dating of the basement and alkaline volcanism of the Gorringe Bank (Atlantic Ocean)
31. A note on the geochronology of the Iberian Alkaline Province
32. 39Ar dating of gabbros from the Ocean-continent transition of the West Iberia margin: Preliminary results
33. 39Ar de la mise en place des peridotites bordant la marge de Galice (Espagne)
34. 39Ar dating experiments
35. Improved accuracy of U-Pb zircon ages by the creation of more concordant system using air abrasion technique
36. An improved micro-capsule for zircon dissolution in U-Pb geochronology
37. 205Pb for U-Pb geochronology
38. Plumbotectonics - the model
39. 235U
40. Subcomission on geochronology, convention on the use of decay constants in geo- and cosmochronology
41. A routine high-precision method for Lu-Hf isotope geochemistry and chronology
42. The Lu-Hf isotope geochemistry of chondrites and the evolution of the mantle-crust system
43. Separation of Hf and Lu for high-precision isotope analysis of rock samples by magnetic sector-multiple collector ICP-MS
44. Age and petrogenesis of two late Archean magmatic suites, northwestern superior province, Canada zircon U-Pb and Lu-Hf relations
45. U-Pb and Lu-Hf isotopes in baddeleyite and zircon megacrysts from the Mbuji-Mayi kimberlite: Constraints on the subcontinental mantle
46. La cinematique de la plaque Iberique
47. High precision Hf isotope measurements of MORB and OIB by thermal ionization mass spectrometry: Insights into the depleted mantle
48. Genesis of the southern Abitibi Greenstonebelt, superior province, Canada: Evidence from zircon Hf isotopeanalysis using a single filament technique
49. Evolution of continental crust and mantle heterogeneity: Evidence from Hf isotopes
50. 176Lu by γ-γ coincidence measurements
51. A Mesozoic time scale
52. Mantle exhumation at passive margins