Online PDF files of USGS Publications, i.e. Jeptha Knob, Sierra Madera, Etc.

Dear Friends,

Free PDF and other files of United States Geological Survey 
can found online and downloaded from the “USGS Publications 
Warehouse” at: 

http://pubs.er.usgs.gov/

Examples of the USGS publications with PDF files that can be 
downloaded from this site are:

Cressman, E. R., 1981, Surface geology of the Jeptha Knob 
cryptoexplosion structure, Shelby County, Kentucky.
Professional Paper no. 1151-B. United States Geological
Survey, Reston, Virginia. 16 pp.

PDF file at http://pubs.usgs.gov/pp/1151b/report.pdf
Plate 1 at http://pubs.usgs.gov/pp/1151b/plate-1.pdf
http://ngmdb.usgs.gov/Prodesc/proddesc_4735.htm

Wilshire, H. G., T. W. Offield, K. A. Howard, and D. Cummings,
1972, Geology of the Sierra Madera cryptoexplosion structure, 
Pecos County, Texas. Professional Paper no. 599-H. United 
States Geological Survey, Reston, Virginia. 41 pp.

PDF file at http://pubs.usgs.gov/pp/0599h/report.pdf
Plate 1 at http://pubs.usgs.gov/pp/0599h/plate-1.pdf
Plate 2 at http://pubs.usgs.gov/pp/0599h/plate-2.pdf
Plate 3 at http://pubs.usgs.gov/pp/0599h/plate-3.pdf
Plate 4 at http://pubs.usgs.gov/pp/0599h/plate-4.pdf

Geologic maps can be found in the National Geologic
Map Database at:

http://ngmdb.usgs.gov/ngmdb/ngmdb_home.html
http://ngmdb.usgs.gov/ngmdb/ngm_catalog.ora.html
http://ngmdb.usgs.gov/ngmdb/ngm_quicksearch.html

Yours,

Paul H.