|contact, approx. located||Contact whose position is not precisely located|
|contact, certain||Observed contact|
|fault, approx. located||Fault whose position is not precisely known|
|fault, concealed||Concealed fault whose position is inferred|
|fault, concealed, queried||Concealed fault whose position is questionable|
|map boundary, certain||Boundary of mapped area|
|scratch boundary||Location of scratch boundary|
|scratch boundary, approx. located||Scratch boundary whose position is not exact|
|f.a., anticline, approx. located||Anticlinal fold axis whose position is not precisely known|
|Range of values|
|Range of values|
R. H. Campbell, Reston, VA assisted in field interpretations and compilation; P. K. Showalter and C. M. Wentworth supplied critical custom programming; and S. E. Graham updated supporting files for completeness and consistency and prepared this report.
To provide to the public a digital geologic map database of the Van Nuys 7.5' quadrangle, southern California
Are there legal restrictions on access or use of the data?
This report is preliminary and has not been reviewed for conformity with U. S. Geological Survey editorial standards or with the North American Stratigraphic Code. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U. S. Government.
This database, identified as "Preliminary Geologic Map of the Van Nuys 7.5' Quadrangle, southern California: A Digital Database," has been approved for release and publication by the Director of the USGS. Although this database has been reviewed and is substantially complete, the USGS reserves the right to revise the data pursuant to further analysis and review. This database is released on condition that neither the USGS nor the U. S. Government may be held liable for any damages resulting from its use.
ARC/INFO export files Description of coverage vn-geol.e00 Depositional contacts, faults, and unit labels vn-strc.e00 Strike and dip information, fold axes vn-wells.e00 Exploratory oil wells vn-topo.e00 Topographic base map taken from a scan of a composite negative of the Van Nuys 7.5 minute quadrangle (contour interval = 20 ft.)in format ARCE (version 7.x) Size: 12.6