Mineral Resources On-Line Spatial Data
Mineral Resources > Online Spatial Data > Geology > by state > Virginia Geology
Geologic units in Falls Church City, Virginia
- Sykesville Formation (Cambrian) at surface, covers 72 % of this area
Sykesville Formation - Metasedimentary melange
- Miocene Sand and Gravel (Tertiary) at surface, covers 6 % of this area
Miocene Sand and Gravel - Sandy gravel, sand, silt, and clay.
- Falls Church Intrusive Suite (Cambrian-Ordovician) at surface, covers 22 % of this area
Falls Church Intrusive Suite - Tonalite, granodiorite, monzogranite, and trondhjemite.