国际地层表说明

[1] Foreword: Chronostratigraphic standards: How are they defined and when should they be changed?[J] . Jürgen Remane.Quaternary International . 1997

[2] A biostratigraphically well-constrained K-bentonite U-Pb zircon age of the lowerm ost Darriwilian stage(m iddle Ordovician)from the Argentine Precordillera .2 HuffW D,DavisD,Bergstr m S M,KrekelerM P S,Kolata D R,Cingolani C. Episodes . 1997

[1] Foreword: Chronostratigraphic standards: How are they defined and when should they be changed?[J] . Jürgen Remane.Quaternary International . 1997

[2] A biostratigraphically well-constrained K-bentonite U-Pb zircon age of the lowerm ost Darriwilian stage(m iddle Ordovician)from the Argentine Precordillera .2 HuffW D,DavisD,Bergstr m S M,KrekelerM P S,Kolata D R,Cingolani C. Episodes . 1997