Geochemistry of fluid phases and sediments: Relevance to hydrothermal circulation in Middle Valley, ODP Legs 139 and 169 - Gieskes, J.; Simoneit, Bernd; Shanks III, Wayne; Goodfellow, W.D.; James, R.H.; Baker, P.A.; Ishibashi, J.-I. (Applied Geochemistry, 2002)