Resolving high precision U-Pb ages from Tertiary plutons with complex zircon systematics

Geochimica et Cosmochimica Acta

Volumn 60, Issue 20, 1996, Pages 3955-3965

  McClelland, William C ^a   Mattinson, James M ^a  

^a UNIVERSITY OF CALIFORNIA   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

AGE DETERMINATION; IGNEOUS ROCK; TERTIARY; URANIUM/LEAD DATING; ZIRCON;

EID: 0030424203     PISSN: 00167037     EISSN: None     Source Type: Journal    
DOI: 10.1016/0016-7037(96)00214-1     Document Type: Article

References (25)

1. Brew D. A. (1988) Latest Mesozoic and Cenozoic igneous rocks of southeastern Alaska - A synopsis. USGS Open-file Rept. 88-405.
2. Brew D. A. and Ford A. B. (1981) The Coast plutonic complex sill, southeastern Alaska. In The U.S. Geological Survey in Alaska: Accomplishments during 1979 (ed. N. R. D. Albert and T. L. Hudson); USGS Circ. 823-B, pp. B96-B98.
3. Chen J. H. and Moore J. G. (1982) Uranium-lead isotopic ages from the Sierra Nevada batholith, California. J. Geophys. Res. 87, 4761-4784.
4. Corfu F. and Davis D. W. (1991) Comment on "Archean hydrothermal zircon in the Abitibi greenstone belt: constraints on the timing of gold mineralization" by J. C. Claoué-Long, R. W. King, and R. Kerrich. Earth Planet. Sci. Lett. 104, 545-552.
5. Crawford M. L. and Crawford W. A. (1991) Magma emplacement in a convergent tectonic orogen, southern Revillagigedo Island, southeastern Alaska. Canadian J. Earth Sci. 28, 929-938.
6. Gehrels G. E. and Berg H. C. (1992) Geologic map of southeastern Alaska. USGS Misc. Investigations Series Map I-1867, scale 1:600,000.
7. Gehrels G. E., McClelland W. C., Samson S. D., Patchett P. J., and Jackson J. L. (1990) Ancient continental margin assemblage in the northern Coast Mountains, southeast Alaska and northwest Canada. Geology 18, 208-211.
8. Gehrels G. E., McClelland W. C., Samson S. D., Patchett P. J., and Brew D. A. (1991) U-Pb geochronology of Late Cretaceous and early Tertiary plutons in the northern Coast Mountains batholith. Canadian J. Earth Sci. 28, 899-911.
9. Gehrels G. E., McClelland W. C., Samson S. D., Patchett P. J., and Orchard M. J. (1992) Geologic and tectonic relations along the western flank of the Coast Mountains batholith between Cape Fanshaw and Taku Inlet, southeastern Alaska. Tectonics 11, 567-585.
10. James E. W. (1992) Cretaceous metamorphism and plutonism in the Santa Cruz Mountains, Salinian block, California, and correlation with the southernmost Sierra Nevada. GSA Bull. 104, 1326-1339.
11. Krogh T. E. (1973) A low contamination method for hydrothermal decomposition of zircon and extraction of U and Pb for isotopic age determinations. Geochim. Cosmochim. Acta 37, 488-494.
12. Krogh T. E. (1982) Improved accuracy of U-Pb zircon ages by the creation of more concordant systems using an air abrasion technique. Geochim. Cosmochim. Acta 46, 637-649.
13. Ludwig K. R. (1991) PBDAT: A computer program for processing Pb-U-Th isotope data, version 1.20. USGS Open-file Rep. 88-542.
14. Mattinson J. M. (1973) Anomalous isotopic composition of lead in young zircons. Carnegie Institution Yearbook 72, 613-616.
15. Mattinson J. M. (1987) U-Pb ages of zircons: a basic examination of error propagation. Chem. Geol. 66, 151-162.
16. Mattinson J. M. (1994) A study of complex discordance in zircons using step-wise dissolution techniques. Contrib. Mineral. Petrol. 116, 117-129.
17. McClelland W. C. and Mattinson J. M. (1996) Cretaceous-Tertiary evolution of the western Coast Mountains, central southeastern Alaska. GSA Special Paper (in review).
18. McClelland W. C., Gehrels G. E., Samson S. D., and Patchett P. J. (1992a) Protolith relations of the Gravina belt and Yukon-Tanana terrane in central southeastern Alaska. J. Geol. 100, 107-123.
19. McClelland W. C., Gehrels G. E., Samson S. D., and Patchett P. J. (1992b) Structural and geochronologic relations along the western flank of the Coast Mountains batholith: Stikine River to Cape Fanshaw, central southeastern Alaska. J. Struct. Geol. 14, 475-489.
20. Parrish R. R. (1990) U-Pb dating of monazite and its application to geological problems. Canadian J. Earth Sci. 27, 1431-1450.
21. 230Th disequilibrium in young U-Pb ages: the Makalu case, Himalaya. Earth Planet. Sci. Lett. 67, 191-204.
22. Stacey J. S. and Kramers J. D. (1975) Approximation of terrestrial lead isotope evolution by a two-stage model. Earth Planet. Sci. Lett. 26, 207-221.
23. Steiger R. H., Bickel R. A., and Meier M. (1993) Conventional U-Pb dating of single fragments of zircon for petrogenetic studies of Phanerozoic granitoids. Earth Planet. Sci. Lett. 115, 197-209.
24. Wheeler J. O. and McFeely P. (1991) Tectonic assemblage map of the Canadian Cordillera. Geological Survey Canada Map 1712A, scale 1:2,000,000.
25. Williams I. S. (1992) Some observations on the use of zircon U-Pb geochronology in the study of granitic rocks. Trans. Roy. Soc. Edinburgh: Earth Sci. 83, 447-458.