Figure F10. A. Close-up photograph showing authigenic carbonate nodule from interval 202-1235A-9H-5, 64-77 cm. B. Diffractogram of the X-ray diffraction (XRD) measurement made on a sample taken from one of the nodules (interval 202-1235B-2H-6, 4-5 cm). The major peaks correspond to dolomite.

Figure F10. A. Close-up photograph showing authigenic carbonate nodule from interval 202-1235A-9H-5, 64-77 cm. B. Diffractogram of the X-ray diffraction (XRD) measurement made on a sample taken from one of the nodules (interval 202-1235B-2H-6, 4-5 cm). The major peaks correspond to dolomite.