This feature class records the location of samples or non-oriented point data that are not uniquely mappable (such as field collected provenance, grain-size, or permeametry measurements). These points may coincide with point data in other feature classes and will be related by StationID. This feature class is intended to represent just the location of data points and should be linked to a user-defined external data table (or the images table) that contains details on the samples. For multiple samples from a single area (e.g. paleocurrent data from a single outcrop), all data that should not be displayed on the map can have the DisplayScale set to 0 (zero).
| 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. |
| StationID | " | 50 | String | variable | [null] | TRUE | ASR-99 | Station ID to link to notes, photos, etc. Could be basis of many-to-one relationships with other point data for multiple measurements (non-attitude) |
| StatnClass | StationClass | 50 | String | CVD | [null] | TRUE | [sample] location, [station] location, [measurement] location | Main purpose of recording information |
| StatnType | StationType | 50 | String | variable | [null] | TRUE | [null], unspecified, rock sample, soil sample, water sample, sketch, notes, soil pit, permeametry, clast count, joint populations, grain size measurements, provenance, photographs, etc. | Type of recorded information of specified class. |
| SampleID | " | 50 | String | variable | [null] | TRUE | [null], ARR-05-99 | Probably will be the same as Station ID, but non-null value indicates sample was taken. |
| PhotoID | " | 50 | String | variable | [null] | TRUE | [null], frame 25 | linked to image table |
| LargerFtr | LargerFeature | 50 | String | variable | [null] | TRUE | related faults, ash beds, marker layers, or other features | Plaintext related larger features/geologic units. |
| LocAccType | LocAccuracyType | 50 | String | variable | [null] | TRUE | precision gps, handheld gps, good topo, poor topo, planimetric, survey, map and compass, triangulation, distinctive feature | Accuracy of position. |
| LocAccMeas | LocAccuracyMeasure | 16 | String | variable | [null] | TRUE | EPE(m), PDOP | Criteria for deterimining accuracy of position. |
| LocAccVal | LocAccuracyValue | Single | variable | [null] | TRUE | 15 | Numeric measurement of locataion accuracy | |
| DsplyScale | DisplayScale | Long Integer | CVD | 24000 | TRUE | see: DisplayScale | Denominator of display scale: display feature at scales larger than number specified (=< denominator). Zero indicates data that should never be displayed. | |
| SourceID | " | 128 | String | variable | [null] | unknown; unspecified; Smith, 2006b [variable] | Feature level metadata (who mapped this); related to bibliographic detail | |
| Comments | " | 255 | String | variable | [null] | TRUE | description | Comments about this particular sample. |