Bedrock geology at a coordinate from Macrostrat - geologic unit, stratigraphic n...

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{ "example": { "count": 4, "lat": 43.07, "lon": -89.4, "source": "Macrostrat geologic map database (CC BY 4.0)", "units": [ { "age_bottom_ma": 497.5, "age_top_ma": 493.575, "description": "Quartz sandstone, medium grained, brownish yellow to white, with medium- to large-scale cross bedding commonly seen in outcrop. Reaches a maximum thickness of 165 feet (50 m) in the subsurface. Part of Elk Mound Group.", "lithology": null, "map_scale": "large", "map_source": null, "name": "Wonewoc Formation (Cw)", "oldest_interval": "Cambrian", "strat_name": "Wonewoc Formation", "youngest_interval": "Cambrian" }, { "age_bottom_ma": 496.8, "age_top_ma": 492.5, "description": "Sandstone with some dolomite and shale, undivided; includes Trempealeau, Tunnel City, and Elk Mound Formations", "lithology": "Major:{sandstone}, Minor:{dolostone,shale}", "map_scale": "medium", "map_source": null, "name": "Cambrian, undivided", "oldest_interval": "Cambrian", "strat_name": "Trempealeau Formation; Tunnel City Formation; Elk Mound Formation", "youngest_interval": "Cambrian" }, { "age_bottom_ma": 541, "age_top_ma": 485.4, "description": "", "lithology": "sedimentary", "map_scale": "small", "map_source": null, "name": "Cambrian sedimentary", "oldest_interval": "Cambrian", "strat_name": null, "youngest_interval": "Cambrian" }, { "age_bottom_ma": 541, "age_top_ma": 251.902, "description": "", "lithology": "sedimentary rocks", "map_scale": "tiny", "map_source": null, "name": "Paleozoic sedimentary rocks", "oldest_interval": "Paleozoic", "strat_name": null, "youngest_interval": "Paleozoic" } ] }, "type": "json" }