The carbonate cements found in Sites 717-719 of ODP Leg 116 correspond to the precipitation of inorganic calcite due to circulation of hot fluid associated with intraplate deformation in the central Indian Ocean. A first burst of hydrothermal activity may have occurred 7.5-9 Ma and a second burst less than 0.5 Ma. These fluids were probably derived from the basaltic basement and the immediately overlying sediments.

Supplement to: Boulègue, Jacques; Mariotti, Andre (1990): Carbonate cements and fluid circulation in intraplate deformation. In: Cochran, JR; Stow, DAV; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 116, 135-139