Neoproterozoic giant ooids as novel proxies for Tonian and Cryogenian
seawater. Dr. Lizzy Trower, University of Colorado Boulder, Virtual
Seminars in Precambrian Geology, Febraury 11, 2022
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Yours,

Paul H.

"The past is never dead. It's not even past."
William Faulkner, Act 1, Scene III, Requiem for a Nun (1951)