|conglomerate||location of conglomerate|
|contact, approx. located||Contact whose position is not precisely located|
|contact, certain||Observed contact|
|contact, inferred||Contact whose position is inferred|
|fault, approx. located||Fault whose position is not precisely known|
|fault, certain||Observed fault|
|fault, concealed||Concealed fault whose position is inferred|
|map boundary, certain||Boundary of mapped area|
|thrust fault, approx. located||Thrust fault whose position is not precisely known|
|tuff||Location of tuff deposit|
|f.a., anticline, approx. located||Anticlinal fold axis whose position is not precisely known|
|f.a., anticline, concealed||Concealed anticlinal fold axis whose position is inferred|
|f.a., anticline, overturned||Overturned anticlinal fold axis|
|f.a., anticline, overturned, approx.||Overturned anticlinal fold axis whose position is not precisely known|
|f.a., syncline, approx. located||Synclinal fold axis whose position is not precisely known|
|f.a., syncline, concealed||Concealed synclinal fold axis whose position is inferred|
|ot bedding||orientation of overturned bedding|
|vert bedding||Vertical bedding orientation|
|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 database of the Los Angeles 7.5' quadrangle.
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 Los Angeles 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 an-geol.e00 Depositional contacts, faults, and unit labels an-strc.e00 Strike and dip information, fold axes an-pts.e00 Exploratory oil wells and fossil localities an-topo.e00 Topographic base map taken from a scan of a composite negative of the Los Angeles 7.5 minute quadrangle (contour interval = 20 ft.)in format ARCE (version 7.x) Size: 18