Bull Run Mountains

Geobox|Range
name=Bull Run Mountains


image_caption=
country=United States
state=Virginia
parent=Blue Ridge Mountains
geology=| border=| orogeny=
length_imperial=| length_orientation=
width_imperial=| width_orientation=
highest=
highest_elevation_imperial=1329
highest_lat_d=|highest_lat_m=|highest_lat_s=|highest_lat_NS=N
highest_long_d=|highest_long_m=|highest_long_s=|highest_long_EW=W


map_caption=The Bull Run Mountains are a mountain range of the Blue Ridge Mountains in northern Virginia in the United States. Together with Catoctin Mountain in Virginia and Maryland, the ranges make up the easternmost front of the Blue Ridge.

They are home to the Bull Run Mountains Conservancy Area, and to residents within Bull Run Mountain Estates.

Interstate 66 and the John Marshall Highway (Virginia Route 55) pass through the mountain at Thoroughfare Gap.

Geography

The range extends approximately sixteen miles from Aldie in Loudoun County, through western Prince William County to New Baltimore in Fauquier County. In the north, from Aldie to the headwaters of Bull Run Creek, the range is entirely within Loudoun County and serves as the eastern border of the southern Loudoun Valley. South of Bull Run Creek, the watershed of the range forms the western border of Prince William with Fauquier and thus the eastern slopes are in the former county, while the western slopes are in the latter.

Geology

The Bull Run Mountains are a geological extension of the same formation that makes up the Catoctin Mountain. This formation consist mainly of Catoctin greenstone interspersed with white quartz and Precambrian metamorphosed basalt flows. The lower ridges on the eastern front also contain Jurassic basalt flows. [Frye, Keith. "Roadside Geology of Virginia." Mountain Press Publishing Company; Missoula, 1986.]

History

The Battle of Thoroughfare Gap was fought on the mountain prior to the Second Battle of Manassas during the American Civil War.

Notes

External links

* [http://www.dcr.state.va.us/dnh/bullrun.htm Bull Run Mountains Natural Area Preserve]
* [http://www.fobr.org/ Bull Run Mountains Conservancy, Inc. (BRMC)]
* [http://www.pwconserve.org/ Prince William Conservation Alliance]