The Masardis 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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Masardis’s center stands about 560 ft above sea level. Within three miles the land runs from 540 ft to 820 ft, a difference of 280 ft: rolling country. The highest named summit within 15 miles is Scopan Mountain, about 1,470 ft, 11 miles northeast.
Under the town center the state geologic map shows Devonian Seboomook Formation (mudstone, sandstone), from the Early Devonian, 410 to 414 million years old.
The section below crosses 5 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 40×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Mudstone, sandstone. Age: Early Devonian, 410 to 414 million years old. About 17 mi of the line.
Mudstone. Age: Devonian, 359 to 422 million years old. About 3 mi of the line.
Felsic-volcanic, mafic-volcanic. Age: Early Devonian, 394 to 422 million years old. About 2 mi of the line.
Mudstone, sandstone. Age: Devonian, 359 to 422 million years old. About 1 mi of the line.
Sandstone. Age: Devonian, 359 to 422 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 Masardis reaches the Bay of Fundy and the Atlantic Ocean by way of the Aroostook and the Saint John: about 260 river miles.
190 miles of the trip are on the Saint John.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Masardis; river miles along the main stem, rounded.
