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RT_GEO_UNIT_TYPE is the classification or category for the units in RT_GEO_UNIT. RT_GEO_UNIT_TYPE might be described as Generalized Hydrostratigraphy, Hydrostratigraphy, Geologic Epoch, Horizons, and MODFLOW Layers in the below example.
An example of Hydrostratigraphy and Soil Horizons in relevant fields of the populated RT_GEO_UNIT_TYPE, RT_GEOLOGIC_UNIT, and AT_GEO_UNIT tables are:
RT_GEO_UNIT_TYPE
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RT_GEOLOGIC_UNIT
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AT_GEO_UNIT
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RT_GEO_UNIT_TYPE.GEO_UNIT_NUMBER field corresponds to the GEO_UNIT_CODE_1 through _5 fields in DT_LITHOLOGY, as shown here:
For ease of use with third-party interfaces, renaming the RT_GEO_UNIT_TYPE.GEO_UNIT_TYPE fields (e.g. "GEOLOGICUNIT1") is not recommended. The GEO_UNIT_TYPE_DESC fields may be changed instead to add descriptions of each type as needed.
The DT_LITHOLOGY.GEO_UNIT_CODE fields are designed to store additional types of geologic data and are populated by RT_GEOLOGIC_UNIT. Several geology-based third-party interfaces, such as EQuIS for EVS and Rockworks make use of these additional layer types.
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