WITSML - Geology Interval Component Schema The type of lithology declaration. An interpreted type will specify one lithology for the whole interval (i.e., the percentage is 100%). A cuttings or core type may specify one or more lithologies for the interval based on a visual inspection of the cuttings or core and a relative percentage will be assigned to each lithology. Measured depth at top of interval. Measured depth at base of interval. A point interval should be indicated by setting mdTop=mdBottom. Date and time the information is related to. The time refers to the top of the interval. True vertical depth at top of the section. True vertical depth at base of interval. Average rate of penetration through Interval. Minimum rate of penetration through Interval. Maximum rate of penetration through Interval. Surface weight on bit - average through interval. Average torque through interval. Average current through interval. This is the raw measurement from which the average torque could be calculated. Average turn rate through interval (commonly in rpm). Average mud density in through interval. Average effective circulating density at TD through Interval. Average drilling exponent through Interval. Set of lithology records for the Interval. Show record through the Interval. Chromatographic break down for the interval. Total gas readings associated with this interval. Sample bulk density for the interval. Shale density for the interval. Calcimetry calcite percentage. Calcimetry dolomite percentage. Cuttings cationic exchange capacity. Fluorescence as measured using a device licensed for the Quantitative Fluorescence Technique. Calcimetry stabilized percentage. Name of formation penetrated. Name of formation, regionally dependent. Chronostratigraphic classification. Minimum size. Maximum size. Plug length. Description of item and details. Sample treatment : cutting fluid. Sample treatment : cleaning method. Sample treatment : drying method. Comments and remarks. Unique identifier for the geology interval.