(a) Illustrative vertical profile of the ophiolite (modified from Legeay et al., 2019). (b, c) Type I ophicalcite constituting serpentinite clasts several decimeters in size, taken in massive serpentine with different degrees of carbonation. (d) Type II ophicalcite with serpentinite clasts surrounded by a matrix of calcite and serpentine. (e) Type III ophicalcite containing different rounded clasts surrounded by calcite. cal: calcite; spt: serpentine.