Zircon detrital

Fig. 2. SEM-BSE images of phosphate minerals in massive sulfides, (a) detrital monazite grain with a metamorphic rim, (b) detrital zircon grain with a xenotime rim, (o) complex zonation of a xenotime mass, and (d) apatite mass with a syntaxial overgrowth...

Wilde S.A., Valley J.W., Peck W.H., and Graham G.M. (2001) Evidence from detrital zircons for the existence of continental crust and oceans on the Earth 4.4 Gyr ago. Nature 409, 175-178. 

The evidence for the oldest zircons, and their interaction with water, is described in S. A. Wilde, J. W. Valley, W. H. Peck, and C. M. Graham, Evidence from Detrital Zircons for the Existence of Continental Crust and Oceans on the Earth 4.4 Gyr Ago , Nature, 409 (2001), 175, and S. J. Mojzsls, T. M. Harrison, and R. T. Pidgeon, Oxygen-Isotope Evidence from Ancient Zircons for... 

Nature of the Earth s earliest crust from hafnium isotopes in single detrital zircons. Nature 399, 252-255. 

Mojzsis S. J., HarrisonT. M., and Pidgeon R. T. (2001) Oxygen isotope evidence from ancient zircons for liquid water at the Earth s surface 4300 Myr ago Jack Hills, evidence for more very old detrital zircons in Western Australia. Nature 409, 178-181. 

Figure 4 Initial snf values of >3.9 Ga detrital zircons from the Jack Hills, Western Australia (Amelin et al., 1999) and Early Archean Itsaq complex gneisses (Vervoort and Blichert-Toft, 1999). The same data have been recalculated using two recently proposed revisions to the Lu decay constant the closed symbols use the decay constant proposed by Bizzarro et al. (2003). The open samples are calculated using the 6% lower decay constant proposed by Scherer et al. (2001). The present-day chondrite parameters used are Hf/ Hf = 0.282772 and Lu/ Hf = 0.0332 (Blichert-Toft and Albarede, 1997).

Amelin Y., Lee D. C., and Halliday A. N. (1999) Nature of the Earth s earliest crust from hafnium isotopes in single detrital zircons. Nature 399, 252-255. 

Stevenson R. K. and Patchett P. J. (1990) Implications for the evolution of continental crust from Hf isotope systematics of Archean detrital zircons. Geochim. Cosmochim. Acta 54, 1683-1697. 

Brandon M. T. and Vance J. A. (1992) Fission-track ages of detrital zircon grains implications for the tectonic evolution of the Cenozoic Olympic subduction complex. Am. J. Sci. 292, 565-636. 

Garver J. 1. and Brandon M. T. (1994) Erosional exhumation of the British Columbia coast ranges as determined from fission-track ages of detrital zircon from the Tofino basin, Olympic Peninsula, Washington. Geol. Soc. Am. Bull. 106, 1398-1412. 

Garver J. 1., Brandon M. T., Roden-Tice M., and Kamp P. J. J. (1999) Erosional exhumation determined by fission-track ages of detrital apatite and zircon. In Exhumation Processes Normal Faulting, Ductile Flow, and Erosion, Special Publication 154 (eds. U. Ring, M. T. Brandon, G. S. Lister, and S. D. Willett). Geological Society of London, London, pp. 283-304. 

Gray M. B. and Zeitler P. K. (1997) Comparison of clastic wedge provenance in the Appalachian foreland using U/Pb ages of detrital zircons. Tectonics 16, 151-160. 

Hurford A. J., Fitch F. J., and Clarke A. (1984) Resolution of the age structure of detrital zircon populations of two lower Cretaceous sandstones from the Weald of England by fission track dating. Geol. Mag. 121, 285-317. 

Kosler J., Fonneland H., Sylvester P., Tubrett M., and Pedersen R. B. (2002) U—Pb dating of detrital zircons for sediment provenance studies a comparison of laser ablation ICPMS and SIMS techniques. Chem. Geol. 182(2—4), 605-618. 

Figure 1 U-Pb Concordia diagram showing the results of an analysis of a detrital zircon crystal by ion microprobe (SHRIMP) followed by analysis of the same crystal using TIMS. Both error ellipses are plotted at 2a. The best estimate of the age of crystallization of the zircon is identical for both techniques however, the TIMS analysis is an order of magnitude more precise than that obtained using the ion microprobe (source Samson et aL, 2003).

Amelin Y. V. (1998) Geochronology of the Jack Hills detrital zircons by precise U-Pb isotope dilution analysis of crystal fragments. Chem. Geol. 146, 25—38. 

Pemandez-Suarez J., Gutierrez A. G., Jenner G. A., and Tubrett M. N. (1999) Crustal sources in lower Paleozoic rocks from NW Iberia insights from laser-ablation U—Pb ages of detrital zircons. J. Geol. Soc. London 156, 1065—1068. 

Knudsen T.-E., Griffin W. E., Hartz E. H., Andersen A., and Jackson S. E. (2001) In-situ hafnium and lead isotope analyses of detrital zircons from the Devonian sedimentary basin of NE Greenland a record of repeated crustal reworking. Contrib. Mineral. Petrol. 141, 83-94. 

Kober B., Pidgeon R. T., and Lippolt H. J. (1989) Single-zircon dating by stepwise Pb-evaporation constrains the Archean history of detrital zircons from the Jack HiUs, Western Austrdia. Earth Planet. Sci. Lett. 91, 286-296. 

Maas R., Kinny P. D., Wilhams 1. S., Froude D. O., and Compston W. (1992) The Earth s oldest known crust a geochronological and geochemical smdy of 3,900-4,200 Ma old detrital zircons from Mt. Narryer and Jack Hills, Western Australia. Geocliim. Cosmochim. Acta 56, 1281-1300. 

Suzuki K. and Adachi M. (1994) Middle Precambrian detrital monazite and zircon from the Hida gneiss on Oki-Dogo Island, Japan their origin and implications for the correlation of basement gneiss of southwest Japan and Korea. Tectonophysics 235, 277-292. 

---