API gamma ray units: Standardized measure of natural gamma radiation in geophysical well logging. The API unit is calibrated to a standard test pit at University of Houston. Used for lithology identification and correlation. Expressed in gAPI (gamma API units).
<complexType name="APIGammaRayMeasureType"><annotation><documentation>API gamma ray units: Standardized measure of natural gamma radiation in geophysical well logging. The API unit is calibrated to a standard test pit at University of Houston. Used for lithology identification and correlation. Expressed in gAPI (gamma API units).</documentation></annotation><simpleContent><extension base="diggs:DescriptorValueType"><attribute name="uom" type="diggs:APIGammaRayUomEnumType"><annotation><documentation>The unit of measure for api gamma ray units.</documentation></annotation></attribute></extension></simpleContent></complexType>
<attribute name="uom" type="diggs:APIGammaRayUomEnumType"><annotation><documentation>The unit of measure for api gamma ray units.</documentation></annotation></attribute>