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ARC/INFO export file Description of coverage ch_sp-py.e00 Faults, depositional contacts, and rock units in Santa Clara County in the Chittenden quadrangle mp_sp-py.e00 Ditto for Mariposa Peak quadrangle sf_sp-py.e00 Ditto for San Felipe quadrangle ts_sp-py.e00 Ditto for Three Sisters quadrangle we_sp-py.e00 Ditto for Watsonville East quadrangle ch_sp-sr.e00 Strike and dip information and fold axes in Santa Clara County in the Chittenden quadrangle sf_sp-sr.e00 Ditto for San Felipe quadrangle ts_sp-sr.e00 Ditto for Three Sisters quadrangle we_sp-sr.e00 Ditto for Watsonville East quadrangle ssc_quad.e00 Index map of quadrangles in southernmost Santa Clara County scc_sp-flt.e00 Index map of faults in southernmost Santa Clara County with annotation showing the names of major faults ssc_corr.e00 Correlation table for the units in this map database ssc_sp-dr.e00 Drainage base map (from 1:100,000 scale original) ssc_sp-cu.e00 Cultural base map (from 1:100,000 scale original) ssc_sp-topo.e00 Topographic contours base map (from 1:100,000 scale original)
| Value | Definition |
|---|---|
| af | Artificial Fill (Historic) |
| alf | Artificial Levee Fill (Historic) |
| Qhasc | Artificial Stream Channels (Historic) |
| Qhsc | Stream Channel Deposits (Holocene) |
| Qhl | Natural Levee Deposits (Holocene) |
| Qhfp | Floodplain deposits (Holocene) |
| Qhb | Basin Deposits (Holocene) |
| Qhaf | Alluvial Fan and Fluvial Deposits (Holocene) |
| Qls | Landslide deposits (Pleistocene and/or Holocene) |
| Qpaf | Alluvial Fans and Fluvial Deposits (Pleistocene) |
| Qpaf1 | Alluvial Terrace Deposits (Pleistocene) |
| Qpaf2 | Pleistocene alluvial terraces |
| Qpoaf | Older Alluvial Fan deposits (Pleistocene) |
| Tsc | Conglomerate, sandstone, and siltstone of Sargent Hills (Pliocene) |
| Tscm | pebble and cobble conglomerate - Sargent Hills (Pliocene) |
| Tscn | quartz-lithic sandstone - Sargent Hills (Pliocene) |
| Tps | Siliceous shale and sandstone of Mount Pajaro (Oligocene and/or Miocene) |
| Tmss | Sandstone of Mount Madonna (Eocene) |
| Tws | Shale of Whitehurst Road (Paleocene and/or Eocene) |
| Tus | Unnamed sandstone and conglomerate (Miocene) |
| Kcg | Unnamed conglomerate (Cretaceous?) |
| sp | Serpentinite |
| fm | Melange |
| Tms | Monterey Formation (Miocene) |
| Kfps | Sandstone - Permanente Terrane (Cretaceous) |
| Kfpl | Limestone and chert - Permanente Terrane (Cretaceous) |
| Kfpg | Greenstone agglomerate - Permanente Terrane (Cretaceous) |
| Kfms | Sandstone - Marin Headlands Terrane (Cretaceous) |
| KJfmc | Chert - Marin Headlands Terrane (Jurassic and Cretaceous) |
| QTp | Packwood Gravels of Crittenden (1951) (Pliocene and Pleistocene) |
| QTv | Unnamed volcanic rocks (Pliocene and/or Pleistocene) |
| Tgs | Glauconitic sandstone (Paleocene and/or Eocene) |
| Kcu | Sandstone, mudstone, and conglomerate (Late Cretaceous) |
| Tia | Intrusive andesite - Quien Sabe Volcanic Field (late Miocene) |
| Tid | Intrusive dacite - Quien Sabe Volcanic Field (late Miocene) |
| Tva | Extrusive andesite - Quien Sabe Volcanic Field (late Miocene) |
| Tvb | Extrusive basalt - Quien Sabe Volcanic Field (late Miocene) |
| Tud | Undivided dacite - Quien Sabe Volcanic Field (late Miocene) |
| Khu | Unnamed sandstone, shale, and conglomerate - Quien Sabe Volcanic Field (Cretaceous) |
| KJfm | Melange (Late Jurassic and/or Early Cretaceous) |
| KJfy | Yolla Bolly Terrane (Middle to Late Jurassic and Early Cretaceous(?)) |
| H2O | Areas of water |
| Value | Definition |
|---|---|
| contact, certain | Observed contact |
| contact, concealed | Concealed contact whose position is inferred |
| contact, approx. located | Contact whose position is not precisely known |
| contact, inferred | Contact whose position is inferred |
| fault, certain | Observed fault |
| fault, concealed | Concealed fault whose position is inferred |
| Fault, concealed, querited | Concealed fault whose position is inferred and questionable |
| fault, approx. located | Fault whose position is not precisely known |
| fault, inferred | Fault whose position is inferred |
| water boundary | Boundary of a body of water |
| map boundary | Extent of mapped area |
| Value | Definition |
|---|---|
| f.a., syncline, certain | Observed synclinal fold-axis |
| f.a., anticline, certain | Observed anticlinal fold-axis |
| Value | Definition |
|---|---|
| bedding | bedding plane orientation |
| bedding w/ tops | bedding plane orientation with tops |
| foliation | foliation orientation |
| foliation and bedding | foliation and bedding orientation |
| ot bedding | Overturned bedding |
| vert bedding | Vertical bedding |
| vert foliation and bedding | Vertical foliation and bedding orientations |
| Range of values | |
|---|---|
| Minimum: | 5 |
| Maximum: | 90 |
| Units: | degrees |
| Resolution: | 1 |
| Range of values | |
|---|---|
| Minimum: | 10 |
| Maximum: | 356 |
| Units: | degrees |
| Resolution: | 1 |
I would like to thank Carolyn Randolph and Tom May who did initial scanning and editing of maps in the Chittenden, Mariposa Peak, and Watsonville East quadrangles. I am also grateful to Dave Jones, Earl Brabb, Robert McLaughlin, and Carl Wentworth who offered helpful advice and information both in the field and office, as well as Dave Wagner of Calif. Div. Mines and Geology for unpublished data on Three Sisters quadrangle and advice in the field.
To provide a digital database of the southernmost part of Santa Clara County, California to the public.
Are there legal restrictions on access or use of the data?Access_Constraints: none
Use_Constraints: none
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 "Geology of the southernmost part of Santa Clara 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 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: | Faults, depositional contacts, and rock units with base map information in format ARCE (version 7.x) Size: 2.3 |
|---|---|
| Network links: |
http://pubs.usgs.gov/of/1997/of97-710/ssc_g1.tar.gz |