Hawarden, Sioux Co., Iowa, USA
Latitude & Longitude (WGS84): | 42° 59' 46'' North , 96° 29' 21'' West |
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Latitude & Longitude (decimal): | 42.99638,-96.48920 |
Köppen climate type: | Dfa : Hot-summer humid continental climate |
South of town on State 12
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
Turonian - Cenomanian 89.8 - 100.5 Ma ID: 2161371 | Fort Benton Group Age: Late Cretaceous (89.8 - 100.5 Ma) Description: Interval includes "Graneros" Shale, Greenhorn Formation, Carlile Shale. Primary Lithologies: shale, medium to dark gray, variably silty, calcareous to very calcareous. Secondary lithologies: chalk, marl, argillaceous limestone, with skeletal (inoceramid) packstones; shale, gray, silty, noncalcareous. Minor: siltstone; calcite and siderite concretions. Maximum thickness 265 ft (80 m). Reference: Witzke, B.J., R.R. Anderson, J.P. Pope. Iowa Bedrock Geologic Map. Iowa Geological and Water Survey, DNR. [26] |
Turonian - Cenomanian 89.8 - 100.5 Ma ID: 2833739 | Fort Benton Group Age: Late Cretaceous (89.8 - 100.5 Ma) Stratigraphic Name: Fort Benton Group Description: Interval includes “Graneros” Shale, Greenhorn Formation, Carlile Shale. Primary Lithologies: shale, medium to dark gray, variably silty, calcareous to very calcareous. Secondary lithologies: chalk, marl, argillaceous limestone, with skeletal (inoceramid) packstones; shale, gray, silty, noncalcareous. Minor: siltstone; calcite and siderite concretions. Maximum thickness 265 ft (80 m). Lithology: Major:{shale}, Minor:{carbonate}, Incidental:{siltstone} 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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