USGS Geoscience Data Catalog
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Clark, Joseph C. , Dupre, William R. , and Rosenberg, Lewis I. , 1997, Geologic Map of the Monterey and Seaside 7.5-minute Quadrangles, Monterey County, California: A Digital Database: U.S. Geological Survey Open-File Report 97-30.Online Links:
This is a vector data set.
Planar coordinates are encoded using coordinate pair
Planar coordinates are specified in meters
The horizontal datum used is NAD27.
The ellipsoid used is Clarke 1866.
The semi-major axis of the ellipsoid used is 6378206.
The flattening of the ellipsoid used is 1/294.98.
| Value | Definition |
|---|---|
| air photo attitude | Attitude of bedding determined from air photo |
| anti arrow | Anticline arrow |
| approx bedding | Bedding whose orientation is not exact |
| bedding | Bedding orientation |
| fault ss rl | Right-lateral strike-slip fault orientation |
| flat bedding | Bedding whose dip is near horizontal |
| syn arrow | Syncline arrow |
| traingle | triangle orientation |
| vert bedding | Bedding whose dip is vertical |
| circle | Circle orientation |
| Dip direction from distant view | Dip of bedding taken from a distance (not precise) |
| ot bedding | Overturned bedding |
| Spring | Spring location |
| Range of values | |
|---|---|
| Minimum: | 0 |
| Maximum: | 90 |
| Units: | degrees |
| Resolution: | 1 |
| Range of values | |
|---|---|
| Minimum: | 0 |
| Maximum: | 359 |
| Units: | degrees |
| Resolution: | 1 |
| Value | Definition |
|---|---|
| arrow, certain | Location of arrow on geological map |
| contact, certain | Location of contact on geological map |
| (blank) | unknown |
| Value | Definition |
|---|---|
| f.a., anticline, certain | Anticlinal fold axis whose position was observed |
| f.a., anticline, concealed | Concealed anticlinal fold-axis whose position is inferred |
| f.a., anticline, inferred | Anticlinal fold axis whose position is inferred |
| f.a., syncline, concealed | Concealed syncline fold axis whose position is inferred |
| f.a., syncline, inferred | Synclinal fold axis whose position is inferred |
| Value | Definition |
|---|---|
| contact, approx. located | Contact whose position is not precise |
| contact, certain | Observed contact |
| contact, concealed | Concealed contact whose position is inferred |
| contact, inferred | Contact whose position is inferred |
| contact, inferred, queried | Contact whose position is inferred and questionable |
| contact, sag pond, approx. location | Contact of sag pond whose position is not precisely known |
| contact, sag pond, certain | Observed sag pond contact |
| contact, sag pond, inferred, queried | Sag pond contact whose position is inferred and questionable |
| fault, certain | Observed fault |
| fault, concealed | Concealed fault whose position is inferred |
| fault, concealed, queried | Concealed fault whose position is inferred and questionable |
| fault, inferred | Fault whose position is inferred |
| fault, inferred, queried | Fault whose position is inferred and questionable |
| map boundary, | Location of map boundary |
| scratch boundary | Location of scratch boundary |
| thrust fault, certain | Observed thrust fault |
| thrust fault, concealed | Concealed thrust fault whose position is inferred |
| thrust fault, inferred | Thrust fault whose position is inferred |
| thrust fault, inferred, queried | Thrust fault whose position is inferred and questionable |
The present study was initiated as part of a regional study of the earthquake hazards of the San Francisco Bay region and is part of the National Earthquake Hazards Reduction Program (NEHRP) of the U.S. Geological Survey. Earl E. Brabb (USGS) established this project, provided base maps, aerial photographs, and other materials, and helped to obtain funding for much of the field work. Partial funding was provided by USGS NEHRP award number 1434-94-G-2443 to Rosenberg and Clark. Supplemental funding was provided by the Monterey County Planning Department under the supervision of Catherine S. West. We are also grateful to the USGS Volunteer Scientist Program for sponsoring Clark and Rosenberg.
Many people gave freely of their time and resources. John C. Tinsley (USGS) and Earl E. Brabb helped by visiting the study area and sharing their opinions. H. Gary Greene (Moss Landing Marine Laboratories), Joseph W. Oliver (Monterey Peninsula Water Management District), Oliver E. Bowen (consulting geologist), and John Logan (consulting geologist) provided unpublished data from their files. Kristin McDougall (USGS) identified and interpreted Miocene foraminifers. Michael P. Bohan (IUP) digitized the geologic contacts, and Carl M. Wentworth (USGS) and Russell W. Graymer (USGS) assisted with developing the digital map. The Explanation of Units sheet was created by Zenon C. Valin (USGS) with assistance from Karen Wheeler (USGS). Carolyn Randolph prepared this booklet announcing the release of the database in Open Files. Special thanks go to Thomas W. Dibblee, Jr., who participated with Clark in the earlier field mapping and shared his unique perspective of the regional geology, and to Richard R. Thorup for sharing his extensive knowledge of the local geology.
615-974-0739 (voice)
jclark1@usgs.gov
To provide to the public a digital geologic map database of the Monterey and Seaside 7.5' quadrangles.
Clark, J.C., Dibblee, T.W., Jr., Greene, H.G., and Bowen, O.E., Jr, 1974, Preliminary geologic map of the Monterey and Seaside 7.5-minute quadrangles, Monterey County Calif., with emphasis on active faults: U.S. Geological Survey Miscellaneous Field Studies Map MF-577.
Rosenberg, L.I., and Clark, J.C., 1994, Quaternary faulting of the greater Monterey area, California: U.S. Geological Survey Open-File Report 1434-94-G-2443.
This map is intended to be of general use to engineers and land-use planners; however, its small scale does not provide sufficient detail for site development purposes. In addition, this map does not take the place of fault-rupture hazard zones designated by the California State Geologist (Hart, 1992).
This digital map database updates a previously published map (Clark and others, 1974) and other published and unpublished data (see Sources of Data in mo-se.ps2) with substantial new mapping by the authors. Together with the accompanying text file (mo-se_geo.txt or mo-se_geo.ps), it provides current information on the stratigraphy and structural geology of the area.
Are there legal restrictions on access or use of the data?
- Access_Constraints: none
- Use_Constraints: none
1-888-ASK-USGS (voice)
1-303-202-4695 (FAX)
infoservices@usgs.gov
US Geological Survey Open-File Report 97-30
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 "Geologic map of the Monterey and Seaside 7.5-minute quadrangles, Monterey County, California: a digital database," has been approved for release and publication by the Director of the USGS. Although this database has been subjected to rigorous review and is substantially complete, the USGS reserves the right to revise the data pursuant to further analysis and review. Furthermore, it is released on the condition that neither the USGS nor the United States Government may be held liable for any damages resulting from its authorized or unauthorized use.
| Data format: |
ARC/INFO export files Description of coverage Monterey 7.5' quadrangle: mobase_utm.e00 Vectorized topographic base map for the Monterey quadrangle mo_geol.e00 Geologic map mo_strc.e00 Strike and dip symbols and fold arrow markers mo_anno.e00 Fault names, U/D, locality numbers, and dip numbers mo_fold.e00 Fold axes mo_arws.e00 Landslide arrows Seaside 7.5' quadrangle: sebase_utm.e00 Vectorized topographic base map for the Seaside quadrangle se_geol.e00 Geologic map se_strc.e00 Strike and dip symbols and fold arrow markers se_anno.e00 Fault names, U/D, locality numbers, and dip numbers se_fold.e00 Fold axes se_arws.e00 Landslide arrowsin format ArcInfo export (version 7.x) Size: 68 megabytes |
|---|---|
| Network links: |
<http://pubs.usgs.gov/of/1997/of97-30/mo-se_g1.tar.Z> |
A compressed tar file of the geologic map database and related files can be obtained by sending a tape with request and return address to:
Monterey-Seaside Geology PostScript Plotfiles c/o Database Coordinator US Geological Survey 345 Middlefield Road, M/S 975 Menlo Park, CA 94025Do not omit any part of this address!
The compressed tar file will be returned on the tape. The acceptable tape types are: 1/4 inch, 150 MB cartridge tape, 2.3 or 5.0 GB, 8 mm Exabyte tape.
703-648-6974 (voice)
703-648-6560 (FAX)
pschweitzer@usgs.gov
U.S. Department of the Interior |
U.S. Geological Survey
URL: http://geo-nsdi.er.usgs.gov/metadata/open-file/97-30/metadata.faq.html
Page Contact Information: Peter Schweitzer
Page Last Modified: Monday, 10-Nov-2008 12:19:50 EST
