Borehole A narrow shaft bored into the ground, either vertically or horizontally. A borehole includes the hole cavity and walls surrounding that cavity. SamplingCurve Example from OGC Observations & Measurements, but listed as Sample Type in SESAR Term retrived from OGC Observations & Measurements (e.g., see https://www.seegrid.csiro.au/wiki/AppSchemas/ObservationsAndSampling#Sampling_model). Parts of the definition came from Wikipedia (see http://en.wikipedia.org/wiki/Borehole). SamplingFeatureType ODM2 Working Group A vocabulary for describing the type of SamplingFeature. Many different SamplingFeature types can be represented in ODM2. SamplingFeatures of type Site and Specimen will be the most common, but many different types of varying levels of complexity can be used.