The Sharon 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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70° on Nov. 11, 2020, the hottest reading for this week of the year since 1884. Next is 67° in 1993.
Sharon’s center stands about 720 ft above sea level. Within three miles the land runs from 490 ft to 1,280 ft, a difference of 790 ft: hilly country. The highest named summit within 15 miles is Mount Frissell, about 2,440 ft, 12 miles north.
Under the town center the state geologic map shows Unit c [of Stockbridge Marble], from the Cambrian, 487 to 497 million years old.
The section below crosses 13 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 10×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Schist, phyllite. Age: Cambrian, 487 to 542 million years old. About 5 mi of the line.
Marble. Age: Cambrian, 487 to 497 million years old. About 4 mi of the line.
Schist, phyllite. Age: Middle Ordovician, 459 to 471 million years old. About 3 mi of the line.
Gneiss, amphibolite. Age: Mesoproterozoic, 1 to 1.6 billion years old. About 3 mi of the line.
Gneiss. Age: Mesoproterozoic, 1 to 1.6 billion years old. About 2 mi of the line.
Marble. Age: Early Ordovician, 471 to 487 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. 7 smaller units along the line are not listed.
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 Sharon reaches Long Island Sound and the Atlantic Ocean by way of Mill Brook, Webatuck Creek, the Tenmile and the Housatonic: about 80 river miles.
50 miles of the trip are on the Housatonic.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Sharon; river miles along the main stem, rounded.
Sharon has a warm-summer humid continental climate. Summer afternoons average 78° in July; winter nights fall to about 14° in January. A normal year brings about 75 inches of snow; with the rain, that comes to about 53 inches of water.
On November 14 Sharon normally reaches 46° and falls to 31°. The record high is 64°, in 1964; the record low 10°, in 2019. The most rain on this date, 0.92 in, fell in 1988.
Normals 1991–2020 and records since 1884 at Norfolk 2 SW, 15 miles east-northeast, 620 ft higher. NOAA, through RCC-ACIS.
