%0 Journal Aritcle %T Redox conditions across the Cambrian–Ordovician boundary: Elemental and isotopic signatures retained in the GSSP carbonates %A Azmy, Karem %A Kendall, Brian %A Brand, Uwe %A Stouge, Svend %A Gordon, Gwyneth W. %D 2015 %I UWSpace %F Azmy, Karem2015 %U http://hdl.handle.net/10012/13775