On Silica Activity and Serpentinization: Errata

JOURNAL OF PETROLOGY VOLUME 49 NUMBER 6 PAGE 1253 2008 doi:10.1093/petrology/egn026 Erratum On Silica Activity and Serpentinization: Errata B. RONALD FROST1 AND JAMES S. BEARD2 1 VIRGINIA MUSEUM OF NATURAL HISTORY, 21 STARLING AVENUE, MARTINSVILLE, VA 24112, USA ADVANCE ACCESS PUBLICATION MAY 7, 2008 We want to thank Bernard Evans, who alerted us that some of our figures in Frost & Beard (2007) violate Schreinermakers’ laws. Reactions (10), (11), (12) and (13) are the reactions of the invariant points and should not be shown as vertical continuous lines in Figs 3, 4c and 5b. We drew them on these figures as vertical lines to let the reader visualize the temperatures at which the dehydration reactions occur and obviously did not think of the consequences to the phase diagram. Fortunately, this error has no effect on our arguments, but still it is embarrassing to include something in our paper that is not PC (petrologically correct) and we thank Bernard for pointing this out. In Fig. 1 we include revised versions of Figs 3, 4c, and 5b that are PC. (a) 0.0 −1.0 −2.0 −3.0 −4.0 200 400 600 800 T°C (b) −2.0 −3.0 −4.0 −5.0 100 200 300 400 300 400 T°C (c) 0 −1 −2 −3 −4 −5 100 200 T°C Fig. 1. Correct topologies for figures from Frost & Beard (2007). (a) Fig. 3; Per, periclase; (b) Fig. 4c; (c) Fig. 5b. ß The Author 2008. Published by Oxford University Press. All rights reserved. For Permissions, please e-mail: journals.permissions@ oxfordjournals.org DEPARTMENT OF GEOLOGY AND GEOPHYSICS, UNIVERSITY OF WYOMING, LARAMIE, WY 82072, USA 2  (...truncated)