Figure F68. Formation MicroScanner (FMS) images from 985 to 1030 mbsf in Hole 1150B showing alternating beds of silty claystone and diatomaceous siltstone in an ~10-m cycle with fine stratifications. The sedimentary cycles can be correlated well with natural gamma radiation. See Figure F67 for an explanation of the FMS display. Note that Caliper 1 (north-south) shows a constant diameter of 25 cm throughout the section and is close to the bit size, whereas Caliper 2 (east-west) varies from 30 to 35 cm. gAPI = gamma-ray American Petroleum Institute.