Connecticut strike and dip data
11,563 structural measurements in Connecticut, digitized from 16 published geologic maps across 4 sources. Every row carries its azimuth, inclination, measurement type, location confidence and the citation of the map it came from.
- 11,563Measurements
- 16Published maps
- 8,789Foliation
- 4Sources
What kinds of measurement
The Atlas separates planar structures, recorded as a strike and dip, from linear ones, recorded as a trend and plunge. This is what Connecticut holds:
| Measurement type | Geometry | Measurements | Share |
|---|---|---|---|
| Foliation | Planar — strike and dip | 8,789 | 76% |
| Other | Planar — strike and dip | 1,000 | 9% |
| Joint | Planar — strike and dip | 672 | 6% |
| Lineation (mineral, stretching) | Linear — trend and plunge | 489 | 4% |
| Bedding | Planar — strike and dip | 362 | 3% |
| Fold hinge / axis | Linear — trend and plunge | 198 | 2% |
| Cleavage | Planar — strike and dip | 45 | <1% |
| Vein / dike | Planar — strike and dip | 8 | <1% |
Where the data comes from
Each source is a survey, agency or program whose published mapping was harvested and reconciled into one schema. Rows are published only where the source's terms permit redistribution.
| Source | Measurements | Share |
|---|---|---|
| NGMDB legacy quads | 5,993 | 52% |
| Connecticut Geol. Survey | 5,321 | 46% |
| NPS GRI parks | 240 | 2% |
| USGS data releases · MRDS | 9 | <1% |
Most-measured published maps
The individual quadrangles and data releases contributing the most measurements in Connecticut. The full
citation for every map behind a selection ships in the sources.csv of any export.
Most-measured map units
Where a source recorded the geologic unit a measurement was taken on, the Atlas keeps it. These are the units carrying the most measurements in Connecticut.
| Map unit | Age | Lithology | Measurements |
|---|---|---|---|
| SDhus | — | — | 477 |
| Ye | — | — | 473 |
| Yd | — | — | 384 |
| Or | — | — | 361 |
| Ota | — | — | 279 |
| OCr | — | — | 249 |
| SOh | — | — | 247 |
| Om | — | — | 235 |
| Yb | — | — | 223 |
| Obr | — | — | 199 |
| Cmcgr | — | — | 199 |
| DSt | — | — | 163 |
Other states
- California97,406
- Washington71,801
- Colorado52,728
- Montana48,678
- Alaska48,016
- Idaho44,711
- Virginia42,037
- Oregon40,354
- South Dakota37,339
- Vermont34,205
- Arizona30,474
- Pennsylvania29,970
- Maine26,897
- New Hampshire26,822
- North Carolina18,758
- Wyoming17,904
- Nevada12,581
- Utah9,589
- Wisconsin8,802
- Massachusetts8,162
- New Jersey7,797
- New York7,202
- Maryland7,019
- Oklahoma6,682
- All states →