Montpelier, Muscatine Co., Iowa, USA
Latitude & Longitude (WGS84): | 41° 27' 33'' North , 90° 48' 25'' West |
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Latitude & Longitude (decimal): | 41.45920,-90.80709 |
GeoHash: | G#: 9zr7vekm3 |
Köppen climate type: | Dfa : Hot-summer humid continental climate |
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Mineral List
1 valid mineral.
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] |
Frasnian - Givetian 372.2 - 387.7 Ma ID: 3024678 | Cedar Valley Group Age: Devonian (372.2 - 387.7 Ma) Stratigraphic Name: Cedar Valley Group Description: Interval includes Little Cedar, Coralville, Lithograph City, and Shell Rock formations; Shell Rock Fm in northern Iowa only. Primary Lithologies: limestone, fossiliferous, variably argillaceous, part biostromal; dolomite, part fossil-moldic to vuggy, variably argillaceous. Secondary Lithologies: limestone, dense, “sublithographic”; dolomite/limestone breccia (evaporite collapse); limestone, sparse to unfossiliferous, argillaceous to shaly; shale, gray to green-gray, dolomitic. Minor: anhydrite/gypsum (outcrop belt only in Grundy, Tama, Poweshiek counties; extensive in subsurface of central and southern Iowa); chert; glauconite; sandy limestone/sandstone. Maximum thicknesses in outcrop belt: southeast Iowa, 80-135 ft (24-41 m); east-central Iowa 130-210 ft (40-64 m); northern Iowa 250-350 ft (76-107 m). Cedar Valley Group thins and is overstepped by Dl westward in Winnebago County. Lithology: Major:{limestone,dolostone}, Minor:{sedimentary breccia,shale}, Incidental:{anhydrite, chert} 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] |
Frasnian - Givetian 372.2 - 387.7 Ma ID: 2162504 | Cedar Valley Group Age: Devonian (372.2 - 387.7 Ma) Stratigraphic Name: Cedar Valley Group Description: Interval includes Little Cedar, Coralville, Lithograph City, and Shell Rock formations; Shell Rock Fm in northern Iowa only. Primary Lithologies: limestone, fossiliferous, variably argillaceous, part biostromal; dolomite, part fossil-moldic to vuggy, variably argillaceous. Secondary Lithologies: limestone, dense, "sublithographic"; dolomite/limestone breccia (evaporite collapse); limestone, sparse to unfossiliferous, argillaceous to shaly; shale, gray to green-gray, dolomitic. Minor: anhydrite/gypsum (outcrop belt only in Grundy, Tama, Poweshiek counties; extensive in subsurface of central and southern Iowa); chert; glauconite; sandy limestone/sandstone. Maximum thicknesses in outcrop belt: southeast Iowa, 80-135 ft (24-41 m); east-central Iowa 130-210 ft (40-64 m); northern Iowa 250-350 ft (76-107 m). Cedar Valley Group thins and is overstepped by Dl westward in Winnebago County. Reference: Witzke, B.J., R.R. Anderson, J.P. Pope. Iowa Bedrock Geologic Map. Iowa Geological and Water Survey, DNR. [26] |
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