gsminmag Mineralogical Magazine Mineralogical Magazine 0026-461X Mineralogical Society 10.1180/minmag.1998.62A.1.296 Palaeoenvironmental Signals and Growth Rates of Rhodoliths — a Geochemical Approach Halfar J. Dept. of Geological and Environmental Sciences, Stanford University, Stanford, CA, 94305-2115, USA Zack T. Mineralogisch-Petrologisches Institut, Universität Göttingen, Goldschmidtstr. 1, D-370 Göttingen, Germany Kronz A. Geochemisches Institut, Universität Göttingen, Goldschmidtstr. 1, D-37077 Göttingen, Germany Zachos J. C. Earth Sciences Department, University of California, Santa Cruz, CA, USA 1998 62A 1 559 560 Copyright © 1998, The Mineralogical Society 1998