Response to the comment by Z.F. Zhao and T.S. Gao (2007) on "Paleozoic ages and excess 40Ar in garnets from the Bixiling eclogite in dabieshan, China: New insights from 40Ar/39Ar dating by stepwise crushing"

Hua Ning Qiu*, J. R. Wijbrans

*Corresponding author for this work

    Research output: Contribution to JournalArticleAcademicpeer-review

    Abstract

    In our paper we supposed that the Paleozoic ages of the Bixiling eclogitic garnets by 40Ar/39Ar crushing in vacuo were related to the UHP metamorphism. Zhao and Gao [Zhao Z.-F. and Gao T.-S. (2007) Comment on "Paleozoic ages and excess 40Ar in garnets from the Bixiling eclogite in Dabieshan, China:Newinsights from 40Ar/39Ar dating by stepwise crushing" by Qiu and Wijbrans (2006). Geochim. Cosmochim. Acta 71(24), 6046-6050] dispute our conclusions and re-interpret them as "the age of garnet growth by low-T/HP blueschist/eclogite-facies metamorphism of the UHP eclogite precursor during arc-continent collision in the early Paleozoic" without presenting any new petrological evidence. Based on our present understanding of 40Ar/39Ar crushing technique and petrological observations, we do not agree with their re-interpretation and still prefer our original interpretation.

    Original languageEnglish
    Pages (from-to)6051-6052
    Number of pages2
    JournalGeochimica et Cosmochimica Acta
    Volume71
    Issue number24
    DOIs
    Publication statusPublished - 15 Dec 2007

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