Opal as a U-Pb geochronometer: Search for a standard

Chemical Geology

Volumn 232, Issue 1-2, 2006, Pages 67-86

  Amelin, Yuri ^a   Back, Malcolm ^b  

^a GEOLOGICAL SURVEY OF CANADA   (Canada)

^b DEPARTMENT OF NATURAL HISTORY   (Canada)

Author keywords

Chalcedony; Opal; Silica; U Pb; U series disequilibrium; XRD

Indexed keywords

CHALCEDONY; GEOCHRONOLOGY; ISOTOPIC COMPOSITION; OPAL; URANIUM-LEAD DATING; X-RAY DIFFRACTION;

EID: 33746438978     PISSN: 00092541     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.chemgeo.2006.02.018     Document Type: Article

References (25)

1. Amelin Y., and Zaitsev A. Precise geochronology of phoscorites and carbonatites: the critical role of U-series disequilibrium in age interpretations. Geochim. Cosmochim. Acta 66 (2002) 2399-2419
2. Amelin Y., Ritsk E.Y., and Neymark L.A. Geochronological and Nd-Sr-Pb isotopic study of the relationships between mafic magmatites and ultramafic tectonites in the Chaya massif, Baikal-Muya ophiolite belt. Earth Planet. Sci. Lett. 148 (1997) 299-316
3. Bustillo M.A., and Martinez-Frias J. Green opals in hydrothermalized basalts (Tenerife Island, Spain): alteration and aging of silica pseudoglass. J. Non-Cryst. Solids 323 (2003) 27-33
4. Cheng H., Edwards R.L., Hoff J., Gallup C.D., Richards D.A., and Asmerom Y. The half-lives of uranium-234 and thorium-230. Chem. Geol. 169 (2000) 17-33
5. Flörke O.W., Flörke U., and Giese U. Moganite: a new microcrystalline silica-mineral. Neues Jahrb. Mineral. Abh. 149 (1984) 325-336
6. Gaillardet J., Viers J., and Dupre B. Trace elements in river waters. Treatise on Geochemistry. Surface and Ground Water, Weathering, and Soils vol. 5 (2003) 225-272
7. Gerstenberger H., and Haase G. A highly effective emitter substance for mass spectrometric Pb isotope ratio determinations. Chem. Geol. 136 (1997) 309-312
8. Graetsch H. Structural characteristics of opaline and microcrystalline silica minerals. Silica. Reviews in Mineralogy vol. 29 (1994), Mineralogical Society of America 209-232
9. Herdianita N., Browne P.R.L., Rodgers K.A., and Campbell K.A. Mineralogical and textural changes accompanying ageing of silica sinter. Miner. Depos. 35 (2000) 48-62
10. Kramers J.D., and Tolstikhin I.N. Two terrestrial lead isotope paradoxes, forward transport modelling, core formation and the history of the continental crust. Chem. Geol. 139 (1997) 75-110
11. Ludwig K.R. Isoplot-Ex version 3.00, a geochronological toolkit for Microsoft Excel. Berkeley Geochronology Center Special Publication vol. 4 (2003) May 30, 2003. 70 pp.
12. Ludwig K.R., Lindsey D.A., Zielinski R.A., and Simmons K.R. U-Pb ages of uraniferous opal and implication for the history of beryllium, fluorine, and uranium mineralization at Spor Mountain, Utah. Earth Planet. Sci. Lett. 46 (1980) 221-232
13. Miehe G., and Graetsch H. Crystal structure of moganite: a new structure type of silica. Eur. J. Mineral. 4 (1992) 693-706
14. Nemchin A.A., Neymark L.A., and Simons S.L. U-Pb SHRIMP dating of uraniferous opals. Chem. Geol. 227 (2006) 113-132
15. Neymark L.A., and Amelin Y. Extreme U-Th-Pb fractionation among hydrogenic fracture-coating minerals in felsic tuffs at Yucca Mountain, Nevada, USA: implications for geochronology. Geochim. Cosmochim. Acta 66 15A (2002) A552 (abstr.)
16. 230Th/U dating of Quaternary opals, Yucca Mountain, NV, USA. Chem. Geol. 164 (2000) 143-160
17. 235U geochronology of Quaternary opal, Yucca Mountain, Nevada. Geochim. Cosmochim. Acta 64 (2000) 2913-2928
18. Neymark L.A., Amelin Y., Paces J.B., and Peterman Z.E. U-Pb ages of secondary silica at Yucca Mountain, Nevada: implications for the paleohydrology of the unsaturated zone. Appl. Geochem. 17 (2002) 709-734
19. Paces J.B., Neymark L.A., Persing H.M., and Wooden J.L. Demonstrating slow growth rates in opal from Yucca Mountain, Nevada, using microdigestion and ion-probe uranium-series dating, Programs with Abstracts. GSA Annual Meeting, Reno, NV (2000) A-259
20. Paces J.B., Neymark L.A., Wooden J.L., and Persing H.M. Improved spatial resolution for U-series dating of opal at Yucca Mountain, Nevada, USA, using ion-microprobe and in-situ microdigestion methods. Geochim. Cosmochim. Acta 68 (2004) 1591-1606
21. Rodgers K.A., Browne P.R.L., Buddle T.F., Cook K.L., Greatrex R.A., Hampton W.A., Herdianita N.R., Holland G.R., Lynne B.Y., Martin R., Newton Z., Pastars D., Sannazarro K.L., and Teece C.I.A. Silica phases in sinters and residues from geothermal fields of New Zealand. Earth-Sci. Rev. 66 (2004) 1-61
22. Stacey J.S., and Kramers J.D. Approximation of terrestrial lead isotope evolution by a two-stage model. Earth Planet. Sci. Lett. 26 (1975) 207-221
23. 230Th isotopic analysis using laser ablation multiple-collector ICPMS. Geochim. Cosmochim. Acta 64 (2000) 3737-3750
24. Wilson N.S.F., Cline J.S., and Amelin Y.V. Origin, timing, and temperature of secondary calcite-silica mineral formation at Yucca Mountain, Nevada. Geochim. Cosmochim. Acta 67 (2003) 1145-1176
25. Zielinski R.A. Uraniferous opal, Virgin Valley, Nevada: conditions of formation and implications for uranium exploration. J. Geochem. Explor. 16 (1982) 197-216