Complex Sm-Nd and Lu-Hf isotope systematics in metamorphic garnets from the Isua supracrustal belt, West Greenland

Geochimica et Cosmochimica Acta

Volumn 65, Issue 18, 2001, Pages 3177-3189

  Blichert Toft, Janne ^a   Frei, Robert ^b,c  

^a UNIVERSITÉ DE LYON   (France)

^b UNIVERSITY OF COPENHAGEN   (Denmark)

^c DANISH LITHOSPHERE CENTRE   (Denmark)

Author keywords

[No Author keywords available]

Indexed keywords

ARCHEAN; DATING METHOD; GARNET; HAFNIUM; LUTETIUM; METAMORPHIC ROCK; SAMARIUM-NEODYMIUM DATING;

GREENLAND;

EID: 0034780862     PISSN: 00167037     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0016-7037(01)00680-9     Document Type: Article

References (67)

1. Abundances of elements: Meteoritic and solar
2. Recognizable primary volcanic and sedimentary features in a low-strain domain of the highly deformed, oldest known (∼3.7-3.8 Gyr) Greenstone Belt, Isua, West Greenland
3. Mineral isotopic age relationships in the polymetamorphic Amîtsoq Gneiss, Godthaab district, West Greenland
4. U-Pb isotope systematics on minerals from the gneiss complex at Isukasia, West Greenland
5. A late Archean pegmatite dyke swarm from the Isuakasia area, Southern West Greenland
6. Geochronology and isotopic variation of the early Archean Amîtsoq gneisses of the Isuakasia area, Southern West Greenland
7. Alteration and metamorphism of Amîtsoq gneisses from the Isukasia area, West Greenland: Recommendations for isotope studies of the early crust
8. Discrete metamorphic events in the Limpopo belt, Southern Africa: Implications for the application of P-T paths in complex metamorphic terrains
9. Separation of Hf and Lu for high-precision isotope analysis of rock samples by magnetic sector-multiple collector ICP-MS
10. The Nd and Hf isotopic evolution of the mantle through the Archean. Results from the Isua supracrustals, West Greenland, and from the Birimian terranes of West Africa
11. Lu-Hf isotope systematics of garnet pyroxenites from Beni Bousera, Morocco: Implications for basalt origin
12. Field work on the very early Precambrian rocks of the Isua area, Southern West Greenland
13. High resolution garnet chronometry and the rates of metamorphic processes
14. 176Lu nucleus
15. Step-leach Pb-Pb dating of inclusion- bearing garnet and staurolite; with implications for Early Proterozoic tectonism in the Black Hills collisional orogen, South Dakota, United States
16. Dating the Indian continental subduction and collisional thickening in the Northwest Himalaya: Multichronology of the Tso Morari eclogites
17. The role of inclusions in U-Pb and Sm-Nd garnet chronology: Stepwise dissolution experiments and trace uranium mapping by fission track analysis
18. The Lu-Hf dating of garnets and the ages of the Alpine high-pressure metamorphism
19. Single mineral dating by the Pb-Pb step-leaching method: Assessing the mechanisms
20. Unraveling the tectono-metamorphic history in the Isua supracrustals (West Greenland): Mineral Pb stepwise leaching evidence for early- and late Archean metasomatic-metamorphic events
21. A pre-3.74 Ga old tectono-metamorphic event in the outer Isua (West Greenland) supracrustal belt: Evidence from Pb stepwise leaching of sulfide-bearing quartz-tourmaline veins
22. Controversial Pb-Pb and Sm-Nd isotope results in the early Archean Isua (West Greenland) oxide iron formation: Preservation of primary signatures versus secondary disturbances
23. The least radiogenic terrestrial leads: Implications for the early Archean crustal evolution and hydrothermal-metasomatic processes in the Isua supracrustal Belt (West Greenland)
24. Hydrothermal-metasomatic and tectono-metamorphic processes in the Isua supracrustal belt (West Greenland): A multi-isotopic investigation of their effects on the Earth's oldest oceanic crustal sequence
25. Resetting of Sm-Nd systematics during metamorphism of >3.7-Ga rocks: Implications for isotopic models of early earth differentiation
26. Proterozoic transpressive deformation in the Northern marginal zone, Limpopo Belt, Zimbabwe
27. U-Pb dating of major and accessory phases formed during metamorphism
28. Fractionation of rare-earth elements in allanite and monazite as related to geology of the Mt. Wheeler mine area, Nevada
29. ISOPLOT for MS-DOS - A plotting and regression program for radiogenic isotope data, for IBM-PC compatible computers, version 2.03
30. U-Pb garnet, sphene, monazite, and rutile ages: Implications for the duration of high-grade metamorphism and cooling histories, Adirondack Mts. New York
31. 87Sr geochronology of enstatite meteorites
32. Re-appraisal of the age of the oldest water-lain sediments, West Greenland: Significance for the existence of life on the early Archean Earth
33. Vestiges of life in the oldest Greenland rocks? A review of early Archean geology in the Godthåbsfjord region, and reappraisal of field evidence for >3850 Ma life on Akilia
34. Protoliths of the 3.8-3.7 Ga Isua greenstone belt, West Greenland
35. 176Lu
36. The early Archean to Proterozoic history of the Isuakasia area, Southern West Greenland
37. The Itsaq Gneiss complex of Southern West Greenland: The world's most extensive record of early crustal evolution (3900-3600 Ma)
38. ∼ 3710 and ≥ 3790 Ma volcanic sequences in the Isua (Greenland) supracrustal belt; structural and Nd isotope implications
39. The early Archean Itsaq Gneiss. Complex of Southern West Greenland: The importance of field observations in interpreting age and isotopic constraints for early terrestrial evolution
40. Lu-Hf and Ar-Ar chronometry supports extreme rate of subduction zone metamorphism deduced from geospeedometry
41. Geochemistry and neodymium and strontium isotope systematics of the 3.7-3.8 Ga pillow basalts from the Isua Greenstone Belt, Southwest Greenland
42. Comparison of laser ablation ICP-MS and isotope dilution REE analyses - Implications for Sm-Nd garnet geochronology
43. Bearing of rare earth patterns of apatites from igneous and metamorphic rocks
44. Age of the "least radiogenic" galenas at Isua, West Greenland
45. The origin of metacarbonate rocks in the Archean Isua supracrustal belt, West Greenland
46. Earliest part of earth's stratigraphic record: A reappraisal of the ≥3.7 Ga Isua (West Greenland) supracrustal sequence
47. 13C-depleted carbon microparticles in >3700-Ma sea-floor sedimentary rocks from West Greenland
48. Pb stepwise leaching (PbSL) dating of garnet -Addressing the inclusion problem
49. Lu-Hf garnet geochronology: Closure temperature relative to the Sm-Nd system and the effects of trace mineral inclusions
50. 176Lu determined by calibration against the U-Pb system in the Phalaborwa carbonatite
51. 176Lu decay constant against U-Pb ages in a carbonatite and a gadolinite
52. New advances in Lu-Hf geochronology
53. 176Lu by γ-γ coincidence measurement
54. Sources of iron-formations in the Archean Isua and Malene supracrustals, West Greenland: Evidence from La-Ce and Sm-Nd isotopic data and REE abundances
55. Metamorphic pressure-temperature-time paths
56. U-Pb and Lu-Hf systematics of Antarctic meteorites
57. Some new aspects of dating eclogites in orogenic belts: Sm-Nd, Rb-Sr and Pb-Pb isotopic results from the austroalpine Saualpe and Koralpe type locality (Carinthia/Styria, Southeastern Austria)
58. Garnet Sm-Nd data from the Saualpe and the Koralpe (Eastern Alps, Austria): Chronological and P-T constraints on the thermal and tectonic history
59. 205Pb double spike
60. Extensional versus compressional settings for metamorphism: Garnet chronometry and P-T-t histories in the Moine Supergroup, Northwest Scotland
61. The influence of high U-Th inclusions on the U-Th-Pb systematics of almandine-pyrope garnet: Results on a combined bulk dissolution, stepwise-leaching and SEM study
62. The timing of prograde metamorphism in the Zanskar Himalaya
63. Evolution of the depleted mantle: Hf isotope evidence from juvenile rocks through time
64. Age significance of U-Th-Pb zircon data from early Archaean rocks of West Greenland -A reassessment based on combined ion-microprobe and imaging studies
65. Evidence from detrital zircons for the existence of continental crust and oceans on the earth 4.4 Gyr ago
66. Rare earth elements in the accessory minerals of gneisses in the Ukrainian crystalline shield
67. Inherited Sm/Nd isotope components preserved in monazite inclusions within garnets in leucogneiss from East Antarctica and implications for closure temperature studies