Deutsch
 
Datenschutzhinweis Impressum
  DetailsucheBrowse

Datensatz

DATENSATZ AKTIONENEXPORT

Freigegeben

Zeitschriftenartikel

A New Appraisal of Sri Lankan BB Zircon as a Reference Material for LA-ICP-MS U-Pb Geochronology and Lu-Hf Isotope Tracing

Urheber*innen

Santos,  Maristella M.
External Organizations;

Lana,  Cristiano
External Organizations;

Scholz,  Ricardo
External Organizations;

Buick,  Ian
External Organizations;

Schmitz,  Mark D.
External Organizations;

Kamo,  Sandra L.
External Organizations;

Gerdes,  Axel
External Organizations;

Corfu,  Fernando
External Organizations;

Tapster,  Simon
External Organizations;

Lancaster,  Penelope
External Organizations;

Storey,  Craig D.
External Organizations;

Basei,  Miguel A.S.
External Organizations;

Tohver,  Eric
External Organizations;

Alkmim,  Ana
External Organizations;

Nalini,  Herminio
External Organizations;

Krambrock,  Klaus
External Organizations;

Fantini,  Cristiano
External Organizations;

/persons/resource/michawi

Wiedenbeck,  Michael
3.1 Inorganic and Isotope Geochemistry, 3.0 Geochemistry, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

Externe Ressourcen
Es sind keine externen Ressourcen hinterlegt
Volltexte (frei zugänglich)
Es sind keine frei zugänglichen Volltexte in GFZpublic verfügbar
Ergänzendes Material (frei zugänglich)
Es sind keine frei zugänglichen Ergänzenden Materialien verfügbar
Zitation

Santos, M. M., Lana, C., Scholz, R., Buick, I., Schmitz, M. D., Kamo, S. L., Gerdes, A., Corfu, F., Tapster, S., Lancaster, P., Storey, C. D., Basei, M. A., Tohver, E., Alkmim, A., Nalini, H., Krambrock, K., Fantini, C., Wiedenbeck, M. (2017): A New Appraisal of Sri Lankan BB Zircon as a Reference Material for LA-ICP-MS U-Pb Geochronology and Lu-Hf Isotope Tracing. - Geostandards and Geoanalytical Research, 41, 3, 335-358.
https://doi.org/10.1111/ggr.12167


Zitierlink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_2632950
Zusammenfassung
A potential zircon reference material (BB zircon) for laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) U-Pb geochronology and Hf isotope geochemistry is described. A batch of twenty zircon megacrysts (0.5–1.5 cm3) from Sri Lanka was studied. Within-grain rare earth element (REE) compositions are largely homogeneous, albeit with some variation seen between fractured and homogeneous domains. Excluding fractured cathodoluminescence bright domains, the variation in U content for all analysed crystals ranged from 227 to 368 μg g−1 and the average Th/U ratios were between 0.20 and 0.47. The Hf isotope composition (0.56–0.84 g/100 g Hf) is homogeneous within and between the grains – mean 176Hf/177Hf of 0.281674 ± 0.000018 (2s). The calculated alpha dose of 0.59 × 1018 g−1 for a number of BB grains falls within the trend of previously studied, untreated zircon samples from Sri Lanka. Aliquots of the same crystal (analysed by ID-TIMS in four different laboratories) gave consistent U-Pb ages with excellent measurement reproducibility (0.1–0.4% RSD). Interlaboratory assessment (by LA-ICP-MS) from individual crystals returned results that are within uncertainty equivalent to the TIMS ages. Finally, we report on within- and between-grain homogeneity of the oxygen isotope systematic of four BB crystals (13.16‰ VSMOW).