Counties, states, countries, continents, or oceans | |
Nelson | county |
Virginia | state |
United States | country |
North America | continent |
Land | continent |
Map quadrangles, from USGS or Canadian NTS | |
Montebello | quadrangle 1:24,000 scale |
Buena Vista | quadrangle 1:100,000 scale |
Roanoke | quadrangle 1:250,000 scale |
Watershed boundaries (USGS hydrologic units) | |
Middle James-Buffalo | hydrologic unit |
James | hydrologic accounting unit |
Lower Chesapeake | hydrologic subregion |
Mid Atlantic | hydrologic region |
Unit | State | Lithology |
---|---|---|
Leucocratic Granulite and Gneiss | VA | Proterozoic Y |
Megacrystic Charnockite | VA | Proterozoic Y |
ID | Data type | Description |
---|---|---|
Roanoke Quad. | M-Dz | Roanoke Quad. 11265 line km with spacing 0.80 km over parts of VA |
Roanoke | M/R-D | Roanoke 2784 line km with spacing 9.60 km over parts of VA |
Domain | Crust type | Region |
---|---|---|
Laurentides | Passive margin | Southeastern Laurentia and Appalachians |
SCAB | Extensional accretionary orogen | Southeastern Laurentia and Appalachians |
Site ID | Land Cover | Secondary land cover |
---|---|---|
7324 | Forested Upland | Mixed Forest |