238U230Th226Ra fractionation in historical lavas from the Azores: Long-lived source heterogeneity vs. metasomatism fingerprints

Chemical Geology

Volumn 176, Issue 1-4, 2001, Pages 295-310

  Claude Ivanaj, C ^a   Joron, J L ^a   Allegre C J ^a  

^a MAX PLANCK INSTITUTE FOR CHEMISTRY   (Germany)

Author keywords

Azores; Mantle metasomatism

Indexed keywords

ISOTOPIC FRACTIONATION; LAVA FLOW; METASOMATISM; RADIUM; THORIUM; URANIUM;

AZORES;

EID: 0034966480     PISSN: 00092541     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0009-2541(00)00406-X     Document Type: Article

References (45)

1. Basalt genesis and mantle structure studied trough Th-isotopic geochemistry
2. Uranium-thorium disequilibria and partitioning on melting of garnet peridotite
3. The generation of uranium series disequilibria by partial melting of spinel peridotite: Constraints from partitioning studies
4. K. Rb. Sr isotope analysis: Application to Rb-Sr chronology
5. Prediction of crystal-melt partition coefficients from elastic moduli
6. Mechanisms of mantle metasomatism-geochemical evidence from the Lherz orogenic peridotite
7. Ridge-Hotspot interaction along the Mid-Atlantic ridge between 37°30 and 40°30 N: The U-Th disequilibrium evidence
8. 230Th disequilibrium data
9. Ra-Th-Sr isotope systematics in Grande Comore island: A case study of plume-lithosphere interaction
10. Melting rates beneath Hawaii: Evidence from uranium series isotopes in recent lavas
11. 238U radioactive disequilibria in tholeiites from the FAMOUS zone (Mid-Atlantic Ridge, 36°50°N): Th and Sr isotopic geochemistry
12. U-Th-Ra radioactive disequilibria and magmatic processes
13. Geochemical structure of the mid Atlantic ridge between 10° and 41°N
14. Isotopic variations within a single oceanic island: The Terceira case
15. Fractionation of U and Th during mantle melting: A reprise
16. Rare earth and other trace elements in historic Azorean lavas
17. Short lived radioactivity and magma genesis
18. Nickel partitioning between olivine and silicate melt
19. 86Sr and incompatible element variations in calc-alkaline andesites and plateau lavas from South America
20. A possible role for garnet pyroxenite in the origin of the garnet signature in MORB
21. Mantle plumes from ancient crust
22. Separation and preconcentration of Sr from biological, environmental and nuclear wast samples by extraction chromatography using a crown ether
23. A review of experimental studies of crystal/liquid trace element partitioning
24. A chemical classification of volcanic rocks based on the total alkali-silica diagram
25. Trace element partitioning between amphibole, phlogopite, and basanite melt
26. Investigating solid upwelling beneath mid-ocean ridges using U-series disequilibria: II. A local study at 33°S Mid-Atlantic ridge
27. Sub-volcanic crystallization at Sete Citades Volcano, Sao Miguel, Azores, inferred from mafic and ultramafic plutonic nodules
28. 238U disequilibrium and the melting processes beneath ridge
29. Helium and lead isotope geochemistry in the Azores
30. Lead isotopic composition and uranium decay series disequilibrium in recent volcanic rocks
31. Azores mantle blob: Rare earth evidence
32. Petrologic and geochemical variations along the Mid-Atlantic Ridge from 29°N to 73°N
33. Systematics of U-series nuclides in primitive lavas from the 1730-36 eruption in lanzarote, canary Islands, and implications for the role of garnet pyroxenites during oceanic basalt formations
34. Consequences of melt transport for uranium series disequilibrium in young lavas
35. Melt generation beneath ocean islands: A U-Th-Ra isotope study from Lanzarote in the Canary islands
36. U-Th disequilibria and ocean island basalt generation in the Azores
37. U-decay series and Sr isotope systematics in the 1978 eruption of Ardoukoba. Rep. of Djibouti: Timescale of magma crystallization
38. The origin of ocean island basalt end-member compositions: Trace element and isotopic constraints
39. The nature and origin of geochemical variation in Mid-Atlantic ridge basalts from the Central North Atlantic
40. Evidence for the Azores mantle plume from strontium isotope geochemistry of the Central North Atlantic
41. Processes and timescales in the evolution of a chemically zoned trachyte: Fogo A, Sao Miguel, Azores
42. Th-Sr-Nd-Pb isotope and trace element evidence for the origin of Sao Miguel, Azores, enriched mantle source
43. Effects of partial melting on the uranium decay series