### Open-File Report 98-795



#### Preliminary Geologic Map of the San Jose 30 X 60 Minute Quadrangle,California: A Digital Database



#### by Carl M. Wentworth, M. Clark Blake, Jr., Robert J. McLaughlin, and Russell W. Graymer

View the revision list as an unformatted, text-only file: of98-795_1a.txt (6 kB)



#### DATABASE DESCRIPTION

Download the database explanation pamphlet as a formattedPostScript plot file: of98-795_2b.ps (152 kB)

View the database explanation pamphlet as a formatted PDF file:of98-795_2c.pdf (35 kB)



#### GEOLOGIC DESCRIPTION

Download the geologic explanation pamphlet as a formattedPostScript plot file: of98-795_3b.ps (1.1 MB)

View the geologic explanation pamphlet as a formatted PDF file:of98-795_3c.pdf (256 kB)



#### DATA

Digital databases are available for GIS users in ARC/INFO Exportand ARCVIEW shapefile formats. Those who download digital data should also download the descriptivepamphlet.

Some of the ARC/INFO Export files have been compressed with gzip.  The ARCVIEW shapefiles have been packaged in tar files and in some cases, compressed with gzip. File sizes (in parentheses) are for the gzip-compressed download file,followed by the size of the file when uncompressed.

##### GEOLOGIC DATABASE

- Geology (6 MB, 32 MB) of98-795_4a.e00.gz
- Blocks (152 KB) of98-795_4b.e00
- Annotation (1.2 MB) of98-795_4c.e00  ARCVIEW Shapefiles
- Geology (20 MB, 30 MB) of98-795_4d.tar.gz
- Blocks (79 KB) of98-795_4e.tar
- Annotation (648 KB) of98-795_4f.tar

##### QUADRANGLE INDEX DATABASE

- Geology (128 KB) of98-795_5a.e00  ARCVIEW Shapefiles
- Geology (90 KB) of98-795_5b.tar

##### TOPOGRAPHIC BASE LAYERS

- Drainage (14.2 MB) of98-795_6a.e00
- Index Contours (3.8 MB) of98-795_6b.e00
- Intermediate Contours (14.9 MB) of98-795_6c.e00
- Culture (19 MB) of98-795_6d.e00
- Land Lines (1 MB) of98-795_6e.e00  ARCVIEW Shapefiles
- Drainage (8.8 MB) of98-795_6f.tar
- Index Contours (2.3 MB) of98-795_6g.tar
- Intermediate Contours (8.8 MB) of98-795_6h.tar
- Culture (15 MB) of98-795_6i.tar
- Land Lines (800 KB) of98-795_6j.tar

##### DATABASE PACKAGES

- Geologic map layers (of98-795_4), and the quadrangle index (of98-795_5) packaged together in a single gzip compressed tar file in ARC/INFO exportformat (7 MB, 36 MB) of98-795_10a.tar.gz
- Geologic map layers (of98-795_4), and the quadrangle index (of98-795_5) packaged together in a single gzip compressed tar file in ARCVIEW shapefileformat (21 MB, 33 MB) of98-795_10b.tar.gz

#### PLOTFILES

Plotfiles are available for those who wish to produce paper copies ofmaps prepared from the digital data. These maps have been edited to conformas much as possible to standard U.S. Geological Survey format for geologicmaps. The plotfiles are in PostScript and PDF formats. Note that these plotfilesare formatted to plot on 29 x 17 inch or larger sheets, so a large formatcolor plotter is required to produce a paper map. Alternatively, some softwarecan import PostScript files, allowing the user to manipulate the map imageas desired. Those who download plotfiles should also download the descriptivepamphlet.

To download one of the plotfile packages in PostScript format (compressed with gzip - compressed size is listed first), select one of the following:

- Geologic Map (18.1 MB, 96 MB) of98-795_7a.ps.gz
- Correlation Diagram (1.5 MB) of98-795_8a.ps
- Postscript plotfile package - both of the above files (19 MB, 99 MB) of98-795_11a.tar.gz

To download one of the plotfile packages in PDF format (not compressed), select one of the following:

- Geologic Map (17.6 MB) of98-795_7b.pdf
- Correlation Diagram (472 KB) of98-795_8b.pdf
- PDF plotfile package - both of the above files (19 MB) of98-795_11b.tar

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