Improved U-Th-total Pb dating of zircons by electron microprobe using a simple new background modeling procedure and Ca as a chemical criterion of fluid-induced U-Th-Pb discordance in zircon

Chemical Geology

Volumn 163, Issue 1-4, 2000, Pages 269-285

  Geisler, Thorsten ^a   Schleicher, Helmut ^a  

^a UNIVERSITY OF HAMBURG   (Germany)

Author keywords

Electron microprobe; Geochronology; Metamictization; U Th total Pb dating; Zircon

Indexed keywords

CALCIUM; GEOCHRONOLOGY; ISOTOPIC COMPOSITION; URANIUM SERIES DATING; ZIRCON;

EID: 0034048944     PISSN: 00092541     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0009-2541(99)00099-6     Document Type: Article

References (58)

1. Ahrens L.H. Some observations on the uranium and thorium distributions in accessory zircon from granitic rocks. Geochim. Cosmochim. Acta. 29:1965;711-716.
2. Aines R.D., Rossman G.R. Relationships between radiation damage and trace water in zircon, quartz and topaz. Am. Mineral. 71:1986;1186-1193.
3. Åmli R., Griffin W.L. Microprobe analysis of REE minerals using empirical correction factors. Am. Mineral. 60:1975;599-606.
4. August H.-J. Calculation of depth distribution functions for characteristic and for continuous radiation. Mikrochim. Acta. 12:1992;139-146. Suppl.
5. Benisek A., Finger C. Factors controlling the development of prism faces in granite zircons: a microprobe study. Contrib. Mineral. Petrol. 114:1993;441-451.
6. Bessette D., Vellmer C., Schleicher H. Petrogenese von Granitoiden der südlichen Eastern Desert, gypten: Bedeutung für die Krustenentwicklung des Nubisch-Arabischen Schildes. Beih. z. Eur. J. Mineral. 8:1996;19. Abstract.
7. Black L.P. Recent Pb loss in zircons: a natural or laboratory-induced phenomenon. Chem. Geol. 65:1987;25-33.
8. Black L.P., Williams I.S., Compston W. Four zircon ages from one rock: the history of a 3930 Ma-old granulite from Mount Sones, Enderby Land, Antarctica. Contrib. Mineral. Petrol. 94:1986;427-437.
9. Bowles J.F.W. Age dating of individual grains of uraninite in rocks from electron microprobe analyses. Chem. Geol. 83:1990;47-53.
10. Brueckner H.K. Interpretation of Rb-Sr ages from the Precambrian and Paleozoic rocks of southern Norway. Am. J. Sci. 272:1972;334-358.
11. Caruba R., Baumer A., Ganteaume M., Iacconi P. An experimental study of hydroxyl groups and water in synthetic and natural zircons: a model of the metamict state. Am. Mineral. 70:1985;1224-1231.
12. Chakoumakos B.C., Murakami T., Lumpkin G.R., Ewing R.C. Alpha-decay-induced fracturing in zircon: the transition from the crystalline to the metamict state. Science. 236:1987;1556-1559.
13. Cocherie A., Legendre O., Peucat J.J., Koumelan A. In situ Th-U-Pb dating using an electron microprobe: a powerful tool for complex polygenic monazites. Terra Nova. 9:1997;441. Abstract suppl. 1.
14. El-Gaby, S., List, F.K., Tehrani, R., 1987. Geology, evolution and metallogenesis of the Pan-African belt in Egypt. In: El-Gaby, S., Greiling, R.O. (Eds.), The Pan-African Belt of Northeastern Africa and Adjacent Areas. Friedr. Vieweg & Sohn, Braunschweig, pp. 17-68.
15. Exley R.A. Microprobe studies of REE-rich accessory minerals. Implications for Skye granite petrogenesis and REE mobility in hydrothermal systems. Earth Planet. Sci. Lett. 48:1980;97-110.
16. Gebauer D., Grünenfelder M. U-Pb zircon and Rb-Sr whole rock dating of low-grade metasediments. Example: Montagne Noire (Southern France). Contrib. Mineral. Petrol. 59:1976;13-32.
17. Gebauer, D., Grünenfelder, M., 1979. U-Th-Pb dating of minerals. In: Jäger, A., Hunziker, J. (Eds.), Lectures in Isotope Geology. Springer-Verlag, Berlin, pp. 105-131.
18. Geisler T., Schleicher H. Routine Th-U-Pb dating of zircons in thin-sections by electron microprobe. Beih. Z. Eur. J. Mineral. 9:1997;116. Abstract.
19. Geisler, T., Schleicher, H., 1999. Composition and U-Th-total Pb model ages of polygenetic zircons from the anorogenic Vånga granite, south Sweden: an electron microprobe study. Geol. Foeren. Stockholm Foerh., submitted for publication.
20. Goldich, S.S., Mudrey, Jr., 1972. Dilatancy model of discordant U-Pb ages. Contribution to Recent Geochemistry and Analytical Chemistry (Vinogradov volume). Nauka, Moskow, 415-418.
21. Grauert B., Seitz M.G., Soptrajanova G. Uranium and lead gain of detritical zircon studied by isotopic analyses and fission track mapping. Earth Planet. Sci. Lett. 21:1974;389-399.
22. Hansen B.T., Friderichsen J.D. The influence of recent lead loss on the interpretation of disturbed U-Pb systems in zircons from igneous rocks in East Greenland. Lithos. 23:1989;209-223.
23. Jarl L.-G., Johansson Å. U-Pb zircon ages of granitoids from Småland-Värmland granite-porphyry belt, southern and central Sweden. Geol. Foeren. Stockholm Foerh. 110:1988;21-28.
24. Jezek P.A., Noble D.C. Natural hydration and ion exchange of obsidian: an electron microprobe study. Am. Mineral. 63:1978;266-273.
25. Kinny P.D., Compston W., Williams I.S. A reconnaissance ion-probe study of hafnium isotopes in zircons. Geochim. Cosmochim. Acta. 55:1991;849-859.
26. Köppel V., Sommerauer J. Trace elements and the behaviour of the U-Pb system in inherited and newly formed zircons. Contrib. Mineral. Petrol. 43:1974;71-82.
27. Krogh T.E., Davis G.L. Alteration in zircons differential dissolution of altered and metamict zircon. Carnegie Inst. Washington, Yearbook. 74:1975;619-623.
28. Lee J.K., Tromp J. Self-induced fracture generation in zircon. J. Geophys. Res. 100(B9):1995;753-770.
29. Medenbach, O., 1976. Geochemie der Elemente in Zirkonen und ihre räumliche Verteilung - Eine Untersuchung mit der Elektronenmikrostrahlsonde. PhD Dissertation. Ruprecht-Karl-Universität Heidelberg.
30. Mezger K., Krogstad E.J. Interpretation of discordant U-Pb zircon ages: an evaluation. J. Metamorph. Geol. 15:1997;127-140.
31. Montel J.-M., Veschambre M., Nicollet C. Datation de la monazite à la microsonde électronique. C.R. Acad. Sci. Paris. 318(II):1993;1489-1495.
32. Montel J.-M., Foret S., Veschambre M., Nicollet C., Provost A. Electron Microprobe dating of Monozite. Chem. Geol. 131:1996;37-53.
33. Mumpton F.A., Roy R. Hydrothermal stability studies of the zircon-thorite group. Geochim. Cosmochim. Acta. 21:1961;217-238.
34. Murakami T., Chakoumakos B.C., Ewing R.C., Lumkin G.R., Weber R.W.J. Alpha-decay event damage in zircon. Am. Mineral. 76:1991;1510-1532.
35. Nemchin A.A., Pidgeon R.T. Evolution of the Darling Range Batholith, Yilgarn craton, Western Australia: a SHRIMP zircon study. J. Petrol. 38:1997;625-649.
36. Pidgeon R.T., Compston W. A SHRIMP ion microprobe study of inherited and magmatic zircons from four Scottish Caledonian granites. Trans. R. Soc. Edinburgh: Earth Sci. 83:1992;473-483.
37. Pidgeon R.T., O'Neil R.J., Silver L.T. Observations on the crystallinity and the U-Pb isotopic system of a metamict Ceylon zircon under hydrothermal conditions. Fortschr. Mineral. 50:1973;118.
38. Pouchou J.L., Pichoir F. A new model for quantitative X-ray microanalysis: Part I. Application to the analysis of homogeneous samples. Rech. Aerosp. 3:1984;13-38.
39. Priem H.N.A., Boelrijk N.A.I.M., Hebeda E.H., Verdurmen E.A.TH., Verschure R.H. Rb-Sr investigations on Precambrian granites, granitic gneisses and acidic metavolcanics in central Telemark: metamorphic resetting of Rb-Sr whole rock systems. Norges Geol. Unders. 289:1973;37-53.
40. Rhede D., Wendt I., Förster H.-J. A three-dimensional method for calculating independent chemical U/Pb- and Th/Pb-ages of accessory minerals. Chem. Geol. 130:1996;247-253.
41. Shannon R.D., Prewitt C.T. Effective ionic radii in oxides and fluorides. Acta Crystallogr. 25:1969;925-946.
42. Sinha A.K., Wayne D.M., Hewitt D.A. The hydrothermal stability of zircon: preliminary experimental and isotopic studies. Geochim. Cosmochim. Acta. 56:1992;3551-3560.
43. Small J.A., Leigh S.D., Newbury D.E., Myklebust R.L. Modeling of the bremsstrahlung radiation produced in pure-element targets by 10-40 keV electrons. J. Appl. Phys. 61:1987;459-469.
44. Smith D.G.W., De St. Jorre L., Reed S.J.B., Long J.V.P. Zonally metamictized and other zircons from Thor Lake, Northwest Territories. Can. Mineral. 29:1991;301-309.
45. Sommerauer, J., 1976. Die chemisch-physikalische Stabilität natürlicher Zirkone und ihr U-(Th)-Pb System. PhD Dissertation. Eidgenössische Technische Hochschule, Zürich.
46. Speer, J.A., 1980. Zircon. In: Ribbe, P.H. (Ed.), Reviews in Mineralogy 5, Mineral. Soc. Am., 76-112.
47. Steiger R.H., Jäger E. Subcommission on geochronology: convention on the use of decay constants in geo- and cosmo-chronology. Earth Planet. Sci. Lett. 36:1977;359-362.
48. Stephens M.B., Wahlgren C.-H., Annertz K. U-Pb ages in two younger suites of Palaeoproterozoic intrusions Karlskoga area, south-central Sweden. Sver. Geol. Unders., Ser. C. 823:1993;46-59.
49. Stern T.W., Goldich S.S., Newell M.F. Effects of weathering on the U/Pb ages of zircon from the Morton Gneiss, Minnesota. Earth Planet. Sci. Lett. 1:1966;369-371.
50. Suominen V. The chronostratigraphy of southwestern Finland with special reference to Postjotnian and Subjotnian diabases. Geol. Surv. Finl., Bull. 356:1991;1-100.
51. Suzuki K., Adachi M.J. Precambrian Provenance and Silurian metamorphism of the Tsubunosawa paragneiss in South Kitakami terrane, Northeast Japan, revealed by the chemical Th-U-total Pb isochron ages of monazite, zircon and xenotime. Geochem. J. 25:1991;357-376.
52. Suzuki K., Adachi M.J. The chemical Th-U-total Pb isochron ages of zircon and monazite from the Gray granite of the Hida Terrane, Japan. Earth Sci. Nagoya Univ. 38:1991;11-37.
53. Ware N.G., Reed S.J.B. Background corrections for quantitative electron microprobe analysis using a lithium drifted silicon X-ray detector. J. Phys. E: Sci. Instrum. 6:1973;286-288.
54. Wayne D.M., Sinha A.K. Physical and chemical response of zircon deformation. Contrib. Mineral. Petrol. 98:1988;109-121.
55. Welin E., Kähr A.-M. The Rb-Sr and U-Pb ages of Proterozoic gneissic granitoids in central Värmland, western Sweden. Sver. Geol. Unders., Ser. C. 777:1980;24-28.
56. Woodhead J.A., Rossman G.R., Silver L.T. The metamictization of zircon: radiation dose-dependent structural characteristics. Am. Mineral. 76:1991;74-82.
57. York D. Least squares fitting of a straight line with correlated errors. Earth Planet. Sci. Lett. 5:1969;320-324.
58. Zielinski R.A., Lipman P.W., Millard H.T. Jr. Minor-element abundances in obsidian, perlite, and felsite in calc-alkalic rhyolites. Am. Mineral. 62:1977;426-437.