Minnekahta, Fall River Co., South Dakota, USA
| Latitude & Longitude (WGS84): | 43° 25' 53'' North , 103° 41' 20'' West |
|---|---|
| Latitude & Longitude (decimal): | 43.43160,-103.68908 |
| GeoHash: | G#: 9xwr06rzm |
| Köppen climate type: | BSk : Cold semi-arid (steppe) climate |
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Select Mineral List Type
Standard Detailed Strunz Dana Chemical ElementsMineral List
Mineral list contains entries from the region specified including sub-localities1 valid mineral.
Detailed Mineral List:
| ⓘ 'Petrified Wood' |
| ⓘ Quartz Formula: SiO2 |
| ⓘ Quartz var: Agate |
| ⓘ Quartz var: Chalcedony Formula: SiO2 |
List of minerals arranged by Strunz 10th Edition classification
| Group 4 - Oxides and Hydroxides | |||
|---|---|---|---|
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| ⓘ | var: Agate | 4.DA.05 | SiO2 |
| ⓘ | var: Chalcedony | 4.DA.05 | SiO2 |
| Unclassified Minerals, Rocks, etc. | |||
| ⓘ | Petrified Wood | - | |
List of minerals arranged by Dana 8th Edition classification
| Group 75 - TECTOSILICATES Si Tetrahedral Frameworks | |||
|---|---|---|---|
| Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si | |||
| ⓘ | Quartz | 75.1.3.1 | SiO2 |
| Unclassified Minerals, Rocks, etc. | |||
| ⓘ | 'Petrified Wood' | - | |
| ⓘ | Quartz var: Agate | - | SiO2 |
| ⓘ | var: Chalcedony | - | SiO2 |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Quartz (var: Chalcedony) | SiO2 |
| O | ⓘ Quartz | SiO2 |
| Si | Silicon | |
| Si | ⓘ Quartz (var: Chalcedony) | SiO2 |
| Si | ⓘ Quartz | SiO2 |
Regional Geology
This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.
Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org
| Late Cretaceous 66 - 100.5 Ma ID: 3188050 | Mesozoic sedimentary rocks Age: Late Cretaceous (66 - 100.5 Ma) Lithology: Siltstone,shale,sandstone Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154] |
| Early Triassic - Lopingian 247.2 - 259.1 Ma ID: 2968792 | Spearfish Formation Age: Phanerozoic (247.2 - 259.1 Ma) Stratigraphic Name: Spearfish Formation Description: Red sandy shale, siltstone, sandstone, and minor limestone. Interbedded with abundant gypsum. Thickness 328-559 ft (100-170 m). Comments: Original map source: Martin, J.E., Sawyer, J.F., Fahrenbach, M.D., Tomhave, D.W., and Schulz, L.D., 2004, Geologic Map of South Dakota: South Dakota Geological Survey, GM 10, scale 1:500,000. Lithology: Major:{shale,siltstone,sandstone}, Minor:{gypsum,limestone} Reference: Horton, J.D., C.A. San Juan, and D.B. Stoeser. The State Geologic Map Compilation (SGMC) geodatabase of the conterminous United States. doi: 10.3133/ds1052. U.S. Geological Survey Data Series 1052. [133] |
Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License
Localities in this RegionShow map
- South Dakota
- Fall River Co.
- Minnekahta
- Fall River Co.
Cycad National Monument, Minnekahta, Fall River Co., South Dakota, USA