Annotated record of the detailed examination of ferromanganese crusts from the Galapagos Ridge area - Moore, Willard S; Vogt, Peter R (In supplement to: Moore, WS; Vogt, PR (1976): Hydrothermal manganese crusts from two sites near the Galapagos spreading axis. Earth and Planetary Science Letters, 29(2), 349-356, https://doi.org/10.1016/0012-821X(76)90139-4, 1976)