Extraction of Pb with artificially too-old ages during stepwise dissolution experiments on Archean zircon

Lithos

Volumn 53, Issue 3-4, 2000, Pages 279-291

  Corfu, Fernando ^a  

^a UNIVERSITY OF OSLO   (Norway)

Author keywords

Absolute age; Archean; Superior Province; U Pb; Zircon

Indexed keywords

ARCHEAN; URANIUM-LEAD DATING; ZIRCON;

CANADA;

EID: 0033829554     PISSN: 00244937     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0024-4937(00)00030-X     Document Type: Article

References (47)

1. Use of zircon U-Pb ages of felsic intrusive and extrusive rocks in eastern Wabigoon subprovince, Ontario, to place constraints on base metal and gold mineralization
2. The difficulties of dating mafic dykes: An Antarctic example
3. Precambrian geology, Oliver and Ware townships
4. The geochemical characteristics of Neoarchean alkalic magmatism in central Superior Province, Ontario
5. Isotopic evidence for the Precambrian provenance and Caledonian metamorphism of high-grade paragneisses from the Seve Nappes, Scandinavian Caledonides. I. Conventional U-Pb zircon and Sm-Nd whole rock data
6. U-Pb ages and genetic significance of heterogeneous zircon populations in rocks from the Favourable Lake area, northwestern Ontario
7. Igneous and tectonic evolution of the Batchawana greenstone belt, Superior Province: A zircon and titanite study
8. The Shebandowan greenstone belt, western Superior Province. U-Pb ages, tectonic implications and correlations
9. U-Pb zircon systematics at Gruinard Bay, northwest Scotland: Implications for the early orogenic evolution of the Lewisian complex
10. Optimum linear regression and error estimation applied to U-Pb data
11. U-Pb age patterns for detrital zircons from the western Superior Province: Witnesses to orogeny
12. 234U and radiogenic Pb from alpha-recoil damaged sites in zircon: Implications for thermal histories and Pb isotopic fractionation in the near surface environment
13. The age and provenance of metasedimentary rocks in the Quetico subprovince, Ontario, from single zircon analyses: Implications for sedimentation and tectonics in the Superior Province
14. Evolution of an Archean subprovince boundary: A sedimentological and structural study of part of the Wabigoon-Quetico boundary in northern Ontario
15. 238U
16. 206Pb-age investigations on single zircon using a double filament thermal ion source
17. Precambrian geology, Northern Long Lake area
18. Precambrian geology, Seagram Lake area
19. A low contamination method for hydrothermal decomposition of zircon and extraction of U-Pb for isotopic age determinations
20. Improved accuracy of U-Pb zircon ages by the creation of more concordant systems using an air abrasion technique
21. Improved accuracy of U-Pb zircon dating by selection of more concordant fractions using a high gradient magnetic separation technique
22. High precision U-Pb ages for granulite metamorphism and deformation in the Archean Kapuskasing structural zone, Ontario: Implications for structure and development of the lower crust
23. Alteration in zircons with discordant U-Pb ages
24. Alteration in zircons and differential dissolution of altered and metamict zircon
25. Two high precision U-Pb zircon ages for the Sudbury Nickel Irruptive
26. A study of inherited and newly formed zircons from paragneisses and granitised sediments of the Strona-Ceneri Zone (Southern Alps)
27. U-Pb reverse discordance in zircons: The role of fine-scale oscillatory zoning and sub-microscopic transport of Pb
28. A study of complex discordance in zircons using step-wise dissolution techniques
29. Analysis of zircon by multi-step partial dissolutions: The good, the bad, and the ugly
30. The microstructure of zircon and its influence on the age determination from U-Pb isotopic ratios measured by ion microprobe
31. 207Pb in zircon from a granitic pegmatite: Implications for interpretation of discordant U-Pb data
32. Proterozoic zircon growth in Archean lower crustal xenoliths, southern superior craton -a consequence of Matachewan ocean opening
33. Late Archean Quetico accretionary complex, Superior Province, Canada
34. Geochronology of Archaean gneisses and tonalites from north of the Frederiksabs isblink, S.W. Greenland
35. Internal structure of zircons from Archean granites from the Darling Range batholith: Implications for zircon stability and the interpretation of zircon U-Pb ages
36. Uranium-lead system in fragments of a single zircon grain
37. Uranium-lead isotope variations in zircon: A case study
38. Approximation of terrestrial lead isotope evolution by a two-stage model
39. 238 systems
40. U-Pb investigations on zircons from pre-Variscan gneisses - I. A study of the Schwarzwald, West Germany
41. Geochemistry and assemblage accretion of metavolcanic rocks in the Beardmore-Geraldton greenstone belt, Superior Province
42. Rb-Sr and U-Pb ages of volcanism and granite emplacement in the Michipicoten belt - Wawa, Ontario
43. Internal morphology, habit and U-Th-Pb microanalysis of amphibolite-to-granulite facies zircons: Geochronology of the Ivrea zone (Southern Alps)
44. An example of reverse discordance during ion microprobe zircon dating: An artifact of enhanced ion yields from a radiogenic labile Pb
45. Unsupported radiogenic Pb in zircon: A cause of anomalous high Pb-Pb, U-Pb and Th-Pb ages
46. Geological evolution of the Manitouwadge greenstone belt and Wawa-Quetico subprovince boundary, Superior Province, Ontario, constrained by U-Pb zircon dates of supracrustal and plutonic rocks