This feature class represents overlays for texture, lithology, provenance, or other attributes of interest. The polygons are build from Overlay_line.
| Field Name | Field Alias | Length (text fields) |
Field Type | Field Value | Default | Allow Nulls? | Attributes / Examples | Description / Notes |
|---|---|---|---|---|---|---|---|---|
| FGDC_code | " | 16 | String | variable | [null] | TRUE | 30.3.12 | FGDC geologic symbol reference number. |
| OverlayID | " | 50 | String | variable | [null] | TRUE | QTsf-axial | |
| Label | " | 50 | String | variable | [null] | TRUE | QTsf-axial? | includes queries |
| OvrlyClass | OverlayClass | 50 | String | variable | [null] | TRUE | unspecified, textural, provenance, depo-system, quarry, mine, crater, etc | Basis for overlay |
| OvrlyType | OverlayType | 50 | String | variable | [null] | TRUE | texture: rounded, subrounded, subangular, angular; lithology: e.g. bioherm bed, etc; depo-system: nearshore, basin floor, etc; provenance: San Juan Mtns, Latir vf, etc. | |
| OverSubTyp | OverlaySubType | 50 | String | variable | [null] | TRUE | texture: cobble, pebble, sand, clay (?); lith: secondary lith?; depo-system: upper? Lower? Etc.; provenance: ? | |
| Confidence | " | 16 | String | CVD | [null] | TRUE | unspecified, certain, probable, uncertain | confidence regarding feature level ID |
| General_ID | Generalized_ID | 50 | String | variable | [null] | TRUE | axial gravels | How to Generalize this polygon. |
| SourceID | " | 128 | String | variable | [null] | unknown; unspecified; Smith, 2006b [variable] | Feature level metadata (who mapped this); related to bibliographic detail | |
| Descriptn | Description | 255 | String | variable | [null] | TRUE | Description of area of polygon (feature level) |