Summary of Citation

GEOLEX database

Geologic Unit: Buckland

Publication:
Lindholm, R.C., 1979, Geologic history and stratigraphy of the 
   Triassic-Jurassic Culpeper basin, Virginia: Geological Society 
   of America Bulletin, v. 90, no. 11, pts. 1-2, p. 995-997 
   (summary), 1702-1736 (microfiche).

Usage in Publication:
Buckland Formation

Modifications:	Geologic Province:	Dominant Lithology:
Named	Culpeper basin Piedmont-Blue Ridge province	Basalt Sandstone Mudstone Shale

Summary:
The Buckland Formation of the Culpeper Group, here named for exposures near Buckland, Prince William Co., VA, consists of basalt flows and interbedded sandstone, mudstone, and shale units. The basaltic flow units are designated I through V, with I being the oldest, and the sedimentary units are designated by the flows between which they occur, I-II through IV-V. The basalt is locally pegmatitic and columnar jointed. The Buckland crops out in an arcuate belt on the west side of the Culpeper basin, from the Rappahannock River north to near Leesburg. Overlies the Bull Run Formation; underlies the Waterfall Formation. Thickness is 1,670 m (5,480 feet). Age is Early Jurassic.
Source: GNU records (USGS DDS-6; Reston GNULEX).

Publication:
Lee, K.Y., and Froelich, A.J., 1989, Triassic-Jurassic stratigraphy 
   of the Culpeper and Barboursville basins, Virginia and 
   Maryland: U.S. Geological Survey Professional Paper, 1472, 
   52 p.

Usage in Publication:
Buckland Formation†

Modifications:	Geologic Province:	Dominant Lithology:
Abandoned	Culpeper basin Piedmont-Blue Ridge province

Summary:
The Buckland Formation of Lindholm (1979) is here abandoned. It is replaced by the Mount Zion Church Basalt, Midland Formation, Hickory Grove Basalt, Turkey Run Formation, and Sander Basalt of the Culpeper Group.
Source: GNU records (USGS DDS-6; Reston GNULEX).