Appendix A. Participants in 1977 Geological Society of America “Penrose Conference” on “Tectonic Significance of Metamorphic Core Complexes,” held in Tucson, Arizona.

T.H. Anderson, R.L. Armstrong, N. Banks, M.C. Blake, D. Brew, R.L. Brown, R.L. Bruhn, R.B. Campbell, M.R. Cole, R.B. Chase, J. Christie, R.R. Compton, P.J. Coney, M. Corbett, M.D. Crittenden, Jr., P.E. Damon, G.A. Davis, G.H. Davis, J.H. Dover, H.D. Drewes, I. Duncan, W. Elston, H. Foster, K. Fox, E. Frost, F.O. Guierrez, W. Hamilton, J. Harrison, R.D. Hatcher, G. Haxel, L.F. Hintze, P.F. Hoffmn, K. Howard, D.W. Hyndman, L.P. James, S. Keith, P.B. King, R.W. Kistler, M.D. Kleinkopf, T. Labotka, D.R. Mabey, E.B. Mayo, E.H. McKee, A.E. Miles, D. Miller, M. Millholland, P. Misch, S.L. Montgomery, R.B. Nelson, K.C. Nielsen, R. Nielson, A.V. Okulitch, S.D. Olmore, R.R. Parrish, L. Pigage, R. Powell, R.A. Price, J.E. Reesor, W.A. Rehrig, J.S. Reid, R.R. Reid, S. Reynolds, G.A. Salas, R.A. Schweickert, T.J. Shackelford, D. Shakel, D.R. Shawe, L.T. Silver, P.S. Simony, R.K. Smith, S. Snelson, A.W. Snoke, G.L. Snyder, H. Taylor, D. Templeman-Kluit, C.H. Thorman, V. Todd, C.J. Vitaliano, R.H. Wheeler, L. Woodward, R.E. Zartman.