Oceanic and Atmospheric Changes at the End of the Ordovician: Geochemical Enigmas or the End of a Beautiful Hypothesis?

J. D. Marshall and P. J. Brenchley
Earth Sciences Department, University of Liverpool, P.O. Box 147, Liverpool, L69 3BX, UK

Mineralogical Magazine; 1998 v. 62A; no. 2; p. 951-952; DOI: 10.1180/minmag.1998.62A.2.166
© 1998, The Mineralogical Society
Mineralogical Society (www.minersoc.org)