Appendix Table AT1 from Volume Chapter 3 gives dimensional characteristics of serpentinite clasts for Hole 1200A. Columns include Clast number, Long axis measurement (L) (in millimeters), Middle axis measurement (M) (in millimeters), Short axis measurement (S) (in millimeters), Carver/Krumbein roundness, Krumbein plot (M/L), and Krumbein plot (S/M). This table is available in ASCII format.