The Millfield plate. Relief from Copernicus GLO-30; rivers and lakes from USGS NHD; watersheds from the USGS Watershed Boundary Dataset; roads and city limits from Census TIGER 2024.
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79° on Nov. 11, 2020, the hottest reading for this week of the year since 1896. Next is 75° in 2002.
Millfield’s center stands about 670 ft above sea level. Within three miles the land runs from 660 ft to 1,020 ft, a difference of 360 ft: rolling country. The highest named summit within 15 miles is Bloemer Berg, about 1,040 ft, 5 miles south.
Under the town center the state geologic map shows Allegheny and Pottsville Groups, Undivided (shale, siltstone), from the Carboniferous, 299 to 324 million years old.
The section below crosses 3 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 41×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Shale, siltstone, mudstone. Age: Carboniferous, 299 to 324 million years old. About 18 mi of the line.
Shale, siltstone, mudstone. Age: Carboniferous, 299 to 324 million years old. About 5 mi of the line.
Shale, siltstone. Age: Carboniferous, 299 to 324 million years old. About 2 mi of the line.
From the USGS State Geologic Map Compilation (Horton and others, 2017), the states’ geologic maps joined at a common scale.
Heights from Copernicus GLO-90 (a surface model: it includes buildings and tree canopy); summits from USGS GNIS; rivers from USGS NHDPlus HR; rock from the USGS State Geologic Map Compilation.
A raindrop that lands in Millfield reaches the Gulf of America by way of Sunday Creek, the Hocking, the Ohio and the Mississippi: about 1,790 river miles.
970 miles of the trip are on the Mississippi.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Millfield; river miles along the main stem, rounded.
Millfield has a hot-summer humid continental climate. Summer afternoons average 84° in July; winter nights fall to about 19° in January. About 43 inches of rain fall in a normal year.
Normals 1991–2020 and records since 1896 at Logan, 17 miles west-northwest. NOAA, through RCC-ACIS.
