The Blaine 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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Blaine’s center stands about 530 ft above sea level. Within three miles the land runs from 390 ft to 1,060 ft, a difference of 670 ft: hilly country. The highest named summit within 15 miles is Mars Hill, about 1,730 ft, 3 miles east-northeast.
Under the town center the state geologic map shows Silurian - Ordovician Carys Mills Formation (siltstone, limestone), from the Late Ordovician to Silurian, 434 to 459 million years old.
The section below crosses 6 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 15×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Siltstone, limestone. Age: Late Ordovician to Silurian, 434 to 459 million years old. About 6 mi of the line.
Graywacke, slate. Age: Ordovician, 445 to 487 million years old. About 4 mi of the line.
Mudstone, sandstone. Age: Silurian, 422 to 445 million years old. About 3 mi of the line.
Conglomerate. Age: Ordovician to Silurian, 422 to 487 million years old. About 2 mi of the line.
Mudstone. Age: Silurian, 422 to 445 million years old. About 1 mi of the line.
Mudstone. Age: Ordovician to Silurian, 422 to 487 million years old. About 0.5 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 Blaine reaches the Bay of Fundy and the Atlantic Ocean by way of the Prestile Stream and the Saint John: about 170 river miles.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Blaine; river miles along the main stem, rounded.
