Alaska DGGS
39,096 structural measurements in the Atlas come from Alaska DGGS, harvested across 46 published maps and data releases and reconciled into the Atlas schema.
Show only this source on the map
- 39,096Measurements
- 46Published maps
- 5%Of the Atlas
- 1%Convention stated
1% of this source's records state their own azimuth convention in the published data. Where a convention is not stated the Atlas infers it from the source's documented practice and records that it did so — which is why every row keeps a link back to the map it came from, and why a measurement that matters should be checked against that map.
What it contains
| Measurement type | Geometry | Measurements | Share |
|---|---|---|---|
| Foliation | Planar — strike and dip | 19,679 | 50% |
| Bedding | Planar — strike and dip | 8,615 | 22% |
| Joint | Planar — strike and dip | 3,334 | 9% |
| Other | Planar — strike and dip | 2,755 | 7% |
| Lineation (mineral, stretching) | Linear — trend and plunge | 1,794 | 5% |
| Cleavage | Planar — strike and dip | 839 | 2% |
| Fold hinge / axis | Linear — trend and plunge | 720 | 2% |
| Vein / dike | Planar — strike and dip | 661 | 2% |
| Fault plane | Planar — strike and dip | 519 | 1% |
| Slickenline | Linear — trend and plunge | 180 | <1% |
Where it is
| State | Measurements | Share |
|---|---|---|
| Alaska | 39,075 | 100% |
Most-measured published maps
Most-measured map units
| Map unit | Age | Lithology | Measurements |
|---|---|---|---|
| Dvs | — | — | 254 |
| pMa | — | — | 220 |
| pMsg | — | — | 208 |
| Dnr | — | — | 201 |
| Tg | — | — | 170 |
| KJp | — | — | 169 |
| pMlp | — | — | 168 |
| Tvc | — | — | 161 |
| Kg | — | — | 154 |
| MDlo | — | — | 144 |
| Kn | — | — | 138 |
| KJa | — | — | 128 |
Other sources
- NGMDB legacy quads206,427
- NPS GRI parks127,001
- USGS NGMDB GeMS91,167
- Washington Geol. Survey66,351
- USGS data releases · MRDS47,492
- USGS SIM quads (NE)38,482
- South Dakota SDGS34,897
- Oregon DOGAMI (OGDC-8)29,982
- Idaho Geol. Survey23,888
- Virginia DGMR18,661
- Vermont Geol. Survey18,478
- Montana MBMG14,434
- Pennsylvania Geol. Survey11,355
- Maine Geol. Survey6,872
- Wyoming WSGS6,824
- Oklahoma Geol. Survey6,506
- Connecticut Geol. Survey5,345
- Wisconsin WGNHS2,871
- Kentucky Geol. Survey2,048
- Maryland Geol. Survey1,481