Early Archaean U/Pb fractionation and timing of late Archaean high-grade metamorphism in the Saglek-Hebron segment of the North Atlantic Craton

Precambrian Research

Volumn 93, Issue 4, 1999, Pages 281-297

  Wendt, J I ^a   Collerson, K D ^a  

^a UNIVERSITY OF QUEENSLAND   (Australia)

Author keywords

Cooling rates; Early Archaean crustal evolution; High grade metamorphism; Inherited inclusions; North Atlantic Craton; Pb isotopes; Sm Nd systematics

Indexed keywords

ARCHEAN; COOLING; CRUSTAL EVOLUTION; GRANULITE FACIES; METAMORPHISM;

CANADA;

EID: 0032828137     PISSN: 03019268     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0301-9268(98)00093-X     Document Type: Article

References (49)

1. Baadsgaard H., Collerson K.D., Bridgwater D. The Archæan gneiss complex of northern Labrador. 1. Preliminary U-Th-Pb geochronology. Can. J. Earth Sci. 16:1979;951-961.
2. Arndt N.T., Jenner G.A. Crustally contaminated komatiites and basalts from Kambalda, Western Australia. Chem. Geol. 56:1986;229-255.
3. Cameron A.E., Smith D.H., Walker R.L. Mass spectrometry of nanogram-size samples of lead. Anal. Chem. 41:1967;525-526.
4. Cameron A.E., Collerson K.D., Compston W., Morton R. The statistical analysis and interpretation of imperfectly fitted isochrons from polymetamorphic terrains. Geochim. Cosmochim. Acta. 45:1981;1089-1097.
5. Campbell, L.M., 1991. Petrology and Geochemistry of two Archæan ultramafic suites from northern labrador: implications for early mantle evolution. MSc thesis, University of California, Santa Cruz, unpubl., p. 130.
6. Chauvel C., Durpé B., Jenner G.A. The Sm-Nd age of Kambalda volcanics is 500 Ma too old! Earth Planet. Sci. Lett. 74:1985;315-324.
7. Cohen A.S., O'Nions R.K., Siegenthaler R., Griffin W.L. Chronology of the pressure-temperature history recorded by a granulite terrain. Contrib. Mineral. Petrol. 98:1988;303-311.
8. Collerson, K.D., 1983a. Ion microprobe zircon geochronology of the Uivak gneisses: implications for the evolution of early terrestrial crust in the North Atlantic Craton. Houston, Texas, Lunar and Planetary Institute Technical Report 83-03, pp. 28-33.
9. Collerson K.D. The Archæan gneiss complex of northern Labrador. 2. Mineral ages, secondary isochrons, and diffusion of strontium during polymetamorphism of the Uivak gneisses. Can. J. Earth Sci. 16:1983;707-718.
10. Collerson, K.D., Bridgwater, D., 1979. Metamorphic development of early Archæan tonalitic and trondhjemitic gneisses: Saglek area, Labrador. In: Barker, F. (Ed.), Trondhjemites, Dacites and Related Rocks. Elsevier, Amsterdam, pp. 205-273.
11. Collerson K.D., Kerr A., Compston W. Geochronology and evolution of late Archæan gneisses in northern Labrador: an example of reworked sialic crust. Second International Archæan Symposium Volume, Geological Society of Australia, Special publication. 7:1981;205-222.
12. Collerson K.D., Kerr A., Vocke R.D., Hanson G. Reworking of sialic crust as represented in late Archæan-age gneisses, northern Labrador. Geology. 10:1982;202-208.
13. Collerson, K.D., McCulloch, M.T., 1982. The origin and evolution of Archæan crust as inferred from Nd, Sr and Pb isotopic studies in Labrador. 5th International Conference on Geochronology, Cosmochronology and Isotope Geology, Extended Abstracts, pp. 61-62.
14. Collerson K.D., McCulloch M.T., Nutman A.P. Sr and Nd isotope systematics of polymetamorphic Archæan gneiss from southern west Greenland and northern Labrador. Can. J. Earth Sci. 26:1989;446-466.
15. Collerson K.D., Campbell L.M., Weaver B.L., Palacz Z.A. Evidence for extreme mantle fractionation in early Archæan ultramafic rocks from northern Labrador. Nature. 349:1991;209-214.
16. Collerson K.D., Regelous M. Evolution of early Archæan lithosphere: new data from the North Atlantic Craton. Terra Nova. 7:1995;98. (abstract).
17. DeWolf C.P., Zeissler C.J., Halliday A.N., Mezger K., Essene E.J. The role of inclusions in U-Pb and Sm-Nd garnet geochronology: stepwise dissolution experiments and trace uranium mapping by fission track analysis. Geochim. Cosmochim. Acta. 60(1):1996;121-134.
18. Dupré B., Arndt N.T. Pb isotopic compositions of Archæan komatiites and sulfides. Chem. Geol. 85:1990;35-36.
19. Frei R., Kamber B.S. Single mineral Pb-Pb dating. Earth Planet. Sci. Lett. 129:1995;261-268.
20. Frei R., Villa I.M., Nägler T.F., Kramers J.D., Przybylowizc W.J., Prozesky V.M., Hoffmann B.A., Kamber B.S. Single mineral dating by the Pb-Pb step-leaching method: assessing the mechanisms. Geochim. Cosmochim. Acta. 61(2):1997;393-414.
21. Friend C.R.L., Nutman A.P., McGregor V.R. Late Archæan terrane accretion in the Gothåb region, southern west Greenland. Nature. 335:1988;535-538.
22. Friend C.R.L., Nutman A.P. Two Archæan granulite facies events in the Nuuk-Maniitsoq region, southern west Greenland: correlation with the the Saglek block, Labrador. J. Geol. Soc. Lond. 151:1994;421-424.
23. Friend C.R.L., Nutman A.P., Baadsgaard H., Kinny P.D., McGregor V.R. Timing of late Archæan terrane assembly, crustal thickening and granite emplacement in the Nuuk region, southern west Greenland. Earth Planet. Sci. Lett. 142:1996;353-365.
24. Harrison W.J., Wood B.J. An experimental investigation of the partitioning of REE between garnet and liquid with reference of the role of defect equilibria. Contrib. Mineral. Petrol. 72:1980;145-155.
25. Hawkesworth, C.J., Erlank, A.J., Marsh, J.S., Menzies, M.A., van Calsteren, P., 1983. Evolution of the continental lithosphere: evidence from volcanics and xenoliths in southern Africa. In: Hawkesworth, C.J., Norry, M.J. (Eds.), Continental Basalts and Mantle Xenoliths. Shiva, Cambridge, MA, pp. 111-138.
26. Hegner E., Kröner A., Hofman A.W. Age and isotope geochemistry of the Archæan Pongola and Ushushwana suites in Swaziland, southern Africa: a case for crustal contamination of mantle-derived magma. Earth Planet. Sci. Lett. 70:1984;267-279.
27. Henson B.J., Zhou B. Retention of isotopic memory in garnets partially broken down during an overprinting granulite-facies metamorphism: implications for Sm-Nd closure temperature. Geology. 23:1995;225-228.
28. Humphries W.J., Cliff R.A. Sm-Nd dating and cooling history of Scourian granulites, Sutherland, NW Scotland. Nature. 295:1982;515-517.
29. Hurst R.W., Bridgwater D., Collerson K.D., Wetherhill G.W. 3600 my Pb-Sr ages from very early Archæan gneisses from Saglek Bay, Labrador. Earth Planet. Sci. Lett. 27:1975;393-403.
30. Jagoutz E. Nd and Sr systematic in an eclogite xenolith from Tanzania: evidence for frozen mineral equilibria in the continental lithosphere. Geochim. Cosmochim. Acta. 52:1988;1285-1293.
31. Kamber B.S., Frei R., Gibb A.J. Pitfalls and new approaches in granulite chronometry an example from the Limpopo Belt, Zimbabwe. Prec. Res. 91:1998;269-285.
32. Kramers J.D., Tolstikhin I.N. Two terrestrial lead isotope paradoxes, forward transport modeling, core formation and the history of the continental crust. Chem. Geol. 139:1997;75-110.
33. McGregor V.R., Mason B. Petrogenesis and geochemistry of metabasic and metasedimentary enclaves in the Amîtsoq gneisses, west Greenland. Am. Mineralogist. 62:1977;887-904.
34. Mezger K., Hanson G.N., Bohlen S.R. U-Pb systematics of garnet: dating the growth of garnet in the late Archæan Pikwitonei granulite domain at Cauchon and Natawahunan Lakes, Manitoba, Canada. Contrib. Mineral. Petrol. 101:1989;136-148.
35. Mezger K., Essene E.J., Halliday A.N. Closure temperatures of the Sm-Nd system in metamorphic garnets. Earth Planet. Sci. Lett. 113:1992;397-409.
36. Moorbath S., O'Nions R.K., Pankhurst R.J. Early Archæan age of the Isua Iron Formation, west Greenland. Nature. 245:1973;138-139.
37. Moorbath, S., Taylor, P.N., 1981. Isotopic evidence for continental growth in the Precambrian. In: KrÖner, A. (ed.), Precambrian Plate Tectonics. Elsevier, Amsterdam, pp. 491-525.
38. Moorbath S., Taylor P.N., Jones N.W. Dating of the oldest terrestical rocks fact and fiction. Chem. Geol. 57:1986;63-86.
39. Niu Y., Batiza R. Trace element evidence from seamounts for recycled oceanic crust in the Eastern Pacific mantle. Earth Planet. Sci. Lett. 148:1997;471-483.
40. Nutman A.P., Collerson K.D. Very early Archæan crustal-accretion complexes preserved in the North Atlantic Craton. Geology. 19:1991;791-794.
41. Nutman A.P., McGregor V.R., Friend C.R.L., Bennett V.C., Kinny P.D. The Itsaq Gneiss Complex of southern west Greenland; the world's most extensive record of early crustal evolution (3900-3600 Ma). Prec. Res. 78:1996;1-39.
42. 144Nd , a natural tracer: an application to natural basalts Earth Planet. Sci. Lett. 31:1976;269-273.
43. Ryan, A.B., 1977. Progressive structural reworking of the Uivak gneisses, Jerusalem Harbour, northern Labrador. MSc thesis, Memorial University of Newfoundland, unpubl., p. 203.
44. Schiøtte, L., Bridgwater, D., Collerson, K.D., Nutman, A.P., Ryan, A.B., 1986. Chemical and isotopic effects of late Archæan high-grade metamorphism and granite injection on early Archæan gneisses, Saglek-Hebron, northern Labrador. In: Dawson, J.B., Carswell, D.A., Hall, J., Wedepohl, H.H. (Eds.), The Nature of the Lower Continental Crust. Geol. Soc., Spec. Publ., 24, pp. 261-273.
45. Schiøtte L., Compston W., Bridgwater D. Ion probe U-Th-Pb zircon dating of polymetamorphic orthogneisses from northern Labrador, Canada. Can. J. Earth Sci. 26:1989;1533-1556.
46. Steiger E.H., Jäger E. Subcommission on geochronology, convention of the use of decay constants in geo- and cosmochronology. Earth Planet. Sci. Lett. 19:1977;321-329.
47. Tilton G.R. Isotopic lead ages of chondritic meteorites. Earth Planet. Sci. Lett. 19:1973;321-329.
48. York D. Least squared fitting of a straight line with correlated errors. Earth Planet. Sci. Lett. 5:1969;320-324.
49. Zhou B., Henson B.J. Inherited Sm/Nd isotope components preserved in monazite inclusions within garnets in leucogneiss from east Antarctica and implications for closure temperature studies. Chem. Geol. 121:1995;317-326.