Baldwin Mines, Jackson Co., Iowa, USA
| Latitude & Longitude (WGS84): | 42° 3' 46'' North , 90° 53' 31'' West |
|---|---|
| Latitude & Longitude (decimal): | 42.06279,-90.89207 |
| GeoHash: | G#: 9zrr79q3t |
| Locality type: | Group of Mines |
| Köppen climate type: | Dfa : Hot-summer humid continental climate |
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Mineral List
4 valid minerals.
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
| Paleozoic 252.17 - 541 Ma ID: 3187973 | Paleozoic sedimentary rocks Age: Paleozoic (252.17 - 541 Ma) Lithology: Sedimentary rocks 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] |
| Wenlock - Telychian 427.4 - 438.5 Ma ID: 2162488 | Scotch Grove Formation Age: Silurian (427.4 - 438.5 Ma) Stratigraphic Name: Scotch Grove Formation Description: Formation includes Welton, Buck Creek Quarry, Waubeek, Palisades-Kepler, Johns Creek Quarry members; Palisades-Kepler and Johns Creek Quarry members contain carbonate mound facies. Erosionally beveled and truncated beneath Dw. Primarily Lithologies: dolomite, porous, fossil-moldic to vuggy, part very crinoidal (includes Welton Mbr); dolomite, cherty to very cherty, dense (Buck Creek Quarry Mbr). Secondary Lithologies: dolomite, sparsely fossil-moldic, dense, part vuggy (includes Waubeek Mbr); dolomite, coarsely crystalline, part very crinoidal (within Johns Creek Quarry, Palisades-Kepler mbrs); dolomite mudstone, dense. Minor: dolomite, slightly argillaceous; quartz druse, chalcedony, silicified fossils. Maximum thicknesses: 94-240 ft (29-73 m); may reach thicknesses to 300 ft (90 m); beveled and truncated beneath Dw. Reference: Witzke, B.J., R.R. Anderson, J.P. Pope. Iowa Bedrock Geologic Map. Iowa Geological and Water Survey, DNR. [26] |
| Sheinwoodian - Telychian 430.5 - 438.5 Ma ID: 2831340 | Scotch Grove Formation Age: Silurian (430.5 - 438.5 Ma) Stratigraphic Name: Scotch Grove Formation Description: Formation includes Welton, Buck Creek Quarry, Waubeek, Palisades-Kepler, Johns Creek Quarry members; Palisades-Kepler and Johns Creek Quarry members contain carbonate mound facies. Erosionally beveled and truncated beneath Dw. Primarily Lithologies: dolomite, porous, fossil-moldic to vuggy, part very crinoidal (includes Welton Mbr); dolomite, cherty to very cherty, dense (Buck Creek Quarry Mbr). Secondary Lithologies: dolomite, sparsely fossil-moldic, dense, part vuggy (includes Waubeek Mbr); dolomite, coarsely crystalline, part very crinoidal (within Johns Creek Quarry, Palisades-Kepler mbrs); dolomite mudstone, dense. Minor: dolomite, slightly argillaceous; quartz druse, chalcedony, silicified fossils. Maximum thicknesses: 94-240 ft (29-73 m); may reach thicknesses to 300 ft (90 m); beveled and truncated beneath Dw. Lithology: Major:{dolostone}, Minor:{mudstone} 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] |
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