-- Name -- Vertical extent type -- Definition -- Vertical dimensional property consisting of an absolute measure or range of measures referenced to a well-defined vertical reference level which is commonly taken as origin (ground level, mean sea level, etc.).
-- Name -- Vertical extent range type -- Definition -- Value indicating the upper and lower bounds of the height/depth range. -- Description -- In the case of depth, the range between the deepest (lower bound) and most shallow (upper bound) aspect of the deposit body, where the depth is true vertical depth below a chosen vertical reference level.