Hurd, David C (1973): (Appendix A 9) Physical, chemical and geological properties related to solution and diffusion in sediment core Hurd_98. PANGAEA, https://doi.org/10.1594/PANGAEA.64440, In supplement to: Hurd, DC (1973): Interactions of biogenic opal, sediment and seawater in the Central Equatorial Pacific. Geochimica et Cosmochimica Acta, 37(10), 2257-2266, https://doi.org/10.1016/0016-7037(73)90103-8