Stable carbon and oxygen isotope ratios of carbonates of ODP Site 103-639, supplement to: Loreau, Jean-Paul; Cros, Pierre (1988): Limestone diagenesis and dolomitization of tithonian carbonates at ODP Site 639 (Atlantic Ocean, west of Spain). In: Boillot, G; Winterer, EL; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 103, 105-143

Jean-Paul Loreau & Pierre Cros
A Tithonian sequence of shallow-water limestones, intercalated with siliciclastics and overlain by dolomite, was recovered during drilling at ODP Site 639 on the edge of a tilted fault block. The carbonates were strongly affected by fracturing, dolomitization, dedolomitization, and compaction. The chronology and nature of the fractures, fracture infilling, and diagenesis of the host rock are established and correlated for both the limestone and the dolomite.A first phase of dolomitization affected limestone that was already,...
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