Geologic Database: a. of98-795_4a.e00.gz -- Geology (ARC export coverage) b. of98-795_4b.e00 -- Tectonic blocks (ARC export coverage) c. of98-795_4c.e00 -- Annotation (ARC export coverage) d. of97-744_4d.tar.gz -- Geology (ARCVIEW shape files) e. of97-744_4e.tar -- Tectonic blocks (ARCVIEW shape files) f. of97-744_4f.tar -- Annotation (ARCVIEW shape files) Quadrangle Index Database: a. of98-795_5a.e00 -- ARC export coverage b. of98-795_5b.tar -- ARCVIEW shape files Topographic Base Database: a. of98-795_6a.e00 -- Drainage (ARC export coverage) b. of98-795_6b.e00 -- Index contours (ARC export coverage) c. of98-795_6c.e00 -- Intermediate contours (ARC export coverage) d. of98-795_6d.e00 -- Culture (ARC export coverage) e. of98-795_6e.e00 -- Land (ARC export coverage) f. of98-795_6f.tar -- Drainage (ARCVIEW shape files) g. of98-795_6g.tar -- Index contours (ARCVIEW shape files) h. of98-795_6h.tar -- Intermediate contours (ARCVIEW shape files) i. of98-795_6i.tar -- Culture (ARCVIEW shape files) j. of98-795_6j.tar -- Land (ARCVIEW shape files) Plot File of Geologic Map: a. of98-795_7a.ps -- PostScript file b. of98-795_7b.pdf -- PDF file Plot File of Correlation Diagram: a. of98-795_8a.ps -- PostScript file b. of98-795_8b.pdf -- PDF file
Online Links:
| Value | Definition |
|---|---|
| af | Artificial fill (Modern) |
| Qhc | Stream channel deposits (Holocene) |
| Qha | Alluvium (Holocene) |
| Qls | Landslide deposits (Quaternary) |
| Qa | Alluvium, undivided (Quaternary) |
| Qc | Colluvium (Quaternary) |
| Qt | Stream terrace deposits (Quaternary) |
| Qpa | Alluvium (upper Pleistocene) |
| Qoa | Older alluvium (lower-middle Pleistocene?) |
| Qmt | Marine terrace deposits (Pleistocene) |
| Qar | Aromas Sand (Pleistocene) |
| QTn | Nonmarine deposits (Pleistocene and Pliocene?) |
| PP | Percolation pond (Modern) |
| GP | gravel pit (Modern) |
| Qhbm | Bay Mud (Holocene) |
| Qhb | Basin deposits (Holocene) |
| Qhfp | Flood plain deposits (Holocene) |
| Qhl | Levee deposits (Holocene) |
| Qhc | Stream channel deposits (Holocene) |
| Qht | Stream terrace deposits (Holocene) |
| Qhf1 | Younger Alluvial fan deposits (Holocene) |
| Qhf2 | Older Alluvial fan deposits (Holocene) |
| Qpf | Alluvial fan deposits (Upper Pleistocene) |
| Qof | Alluvial fan deposits (middle to upper Pleistocene) |
| Qhc | Stream channel deposits (Holocene) |
| Qhcj | Channel deposits of the San Joaquin River (Holocene) |
| Qhb | Basin deposits of the San Joaquin River (Holocene) |
| Qhlj | Levee deposits of the San Joaquin River (Holocene) |
| Qhr | Basin rim and distal fan deposits (Holocene) |
| Qap | Alluvium of Patterson (upper Holocene) |
| Qfc | Alluvial fan complex (Holocene and upper Pleistocene) |
| Qsu | Upper member, Alluvial fan complex (Holocene and upper Pleistocene) |
| Qsl | Lower member, Alluvial fan complex (Holocene and upper Pleistocene) |
| Qlu | Upper member, Alluvium of Los Banos (upper and middle Pleistocene) |
| Qlm | Middle member, Alluvium of Los Banos (upper and middle Pleistocene) |
| Qll | Lower member, Alluvium of Los Banos (upper and middle Pleistocene) |
| Tp | Purisima Formation (Pliocene and Upper Miocene) |
| Tsc | Santa Cruz Mudstone (Upper Miocene) |
| Tsm | Santa Margarita Sandstone (Upper Miocene) |
| Tm | Monterey Formation (Middle Miocene) |
| Tlo | Lompico Sandstone (Middle and Lower Miocene) |
| Tla | Lambert Shale (Lower Miocene) |
| Tvq | Vaqueros Sandstone and volcanic rocks (Lower Miocene and Oligocene) |
| Tvz | Zayante Sandstone (Lower Miocene and Oligocene) |
| Tvb | Basalt, probably equivalent to basalt west of the map area dated at 23.7 Ma (Tuerner, 197; Fox and others, 1984) |
| Tsr | Rices Mudstone Member, San Lorenzo Formation (Oligocene and Eocene) |
| Tst | Twobar Shale Member, San Lorenzo Formation (Oligocene and Eocene) |
| Tbu | Sandstone and mudstone, undivided, Butano Sandstone (Eocene) |
| Tbc | Conglomerate, Butano Sandstone (Eocene) |
| Kgr | Granitic and Metamorphic Rocks (Cretaceous and older) |
| sc | Silica-carbonate rock (Miocene?) |
| Tme | Shale and sandstone of Highland Way (lower Miocene to lower Eocene) |
| Tls | Sandstone and mudstone, Sandstone and shale of Loma Chiquita Ridge (Eocene) |
| Tcm | Mottled mudstone and sandstone of Mount Chual (lower Eocene), Sandstone and shale of Loma Chiquita Ridge (Eocene) |
| Kus | Sandstone and shale (Upper Cretaceous) |
| Kuc | Conglomerate (Upper Cretaceous) |
| KJs | Mudstone (Lower Cretaceous and Upper Jurassic) |
| Jsl | Slate of Loma Prieta Peak (Jurassic?) |
| Jbk | Basalt, andesite, and quartz keratophyre (Upper to Middle Jurassic) |
| Jic | Intrusive complex (Upper Jurassic?) |
| Jdw | Cumulate rocks (Jurassic) |
| QTsc | Santa Clara Formation (Pleistocene and Pliocene) |
| sc | Silica Carbonate rock (Miocene?) |
| Tms | Monterey Shale (Middle to Lower Miocene) |
| Tus | Sandstone, Monterey Shale (Middle to Lower Miocene) |
| Tts | Temblor Sandstone (Middle Miocene to Oligocene?) |
| Ttv | Dacitic volcanic and intrusive rocks (middle Miocene) |
| Jsp | Serpentinized ultramafic rocks (Jurassic) |
| fm | Melange of the Central Belt, Franciscan Complex (Lower Tertiary? and Upper Cretaceous) |
| fpl | Foraminiferal Limestone (Upper to Lower Cretaceous) |
| fpv | Basaltic volcanic rocks (Lower Cretaceous) |
| fms | Graywacke of the Marin Headlands terrane (Lower Cretaceous) |
| fmc | Radiolarian chert of the Marin Headlands terrane (Lower Cretaceous to Lower Jurassic) |
| fmv | Basaltic volcanic rocks of the Marin Headlands terrane (Lower Jurassic) |
| QTp | Packwood Gravels of Crittenden (1951) (Pleistocene? and Pliocene) |
| Tsg | Silver Creek Gravels of Graymer and DeVito (1993) (Pliocene) |
| Tba | Basalt of Anderson and Coyote Reservoirs (Pliocene) |
| Tvo | Andesite of Silver Creek (Miocene) |
| Tso | Sandstone of Silver Creek (Miocene) |
| sc | Silica-carbonate rock (Miocene?) |
| KJk | Knoxville Formation (Lower Cretaceous and Upper Jurassic) |
| Jsp | Serpentinite, Coast Range Ophiolite (Jurassic) |
| Tbr | Briones Formation (upper Miocene) |
| Tcc | Claremont Formation (upper to middle Miocene) |
| Tts | Temblor Sandstone (middle to lower Miocene) |
| Tbm | Brown-weathering mudstone (Eocene) |
| Tgs | Glauconitic sandstone and red mudstone (lower Eocene and/or upper Paleocene) |
| Kcu | Sandstone, mudstone, and conglomerate (Cretaceous) |
| QTi | Irvington Gravels of Savage (1951) (Pleistocene and Pliocene?) |
| Tor | Orinda Formation (upper Miocene) |
| Torv | Basalt and andesite of the Orinda Formation (upper Miocene) |
| Kbs | Sandstone and mudstone, Berryessa Formation (Cretaceous) |
| Kbc | Conglomerate, Berryessa Formation (Cretaceous) |
| Kau | Sandstone, mudstone, and conglomerate of the Berryessa Formation (Upper Cretaceous) |
| Jbk | Basalt, keratophyre, and quartz keratophyre, Coast Range Ophiolite (Jurassic) |
| Jic | Intrusive diabase, diorite, and gabbro, Coast Range Ophiolite (Jurassic) |
| Tsl | Basalt of San Luis Reservoir (upper Miocene) |
| Tqs | Quien Sabe Volcanics (upper Miocene) |
| Tqi | Intrusive Phase, Quien Sabe Volcanics (upper Miocene) |
| Tv | Volcanic rocks, undivided (upper Miocene?) |
| Tlt | Siltstone and sandstone (upper to middle Miocene) |
| Tts | Temblor Sandstone (middle Miocene) |
| bl | Blueschist block, Eastern Belt, Franciscan complex (Cretaceous and Jurassic) |
| fb1 | Lower Unit, Burnt Hills terrane (Upper Cretaceous) |
| fb2 | Middle Unit, Burnt Hills terrane (Upper Cretaceous) |
| fb3 | Upper Unit, Burnt Hills terrane (Upper Cretaceous) |
| fy1 | Lower Unit, Yolla Bolly terrane (Cretaceous? and Jurassic) |
| fy2 | Middle Unit, Yolla Bolly terrane (Cretaceous? and Jurassic) |
| fy3 | Upper Unit, Yolla Bolly terrane (Cretaceous? and Jurassic) |
| fys | Metagraywacke, undivided, Yolla Bolly terrane (Cretaceous? and Jurassic) |
| fyu | Yolla Bolly terrane, undivided, Yolla Bolly terrane (Cretaceous? and Jurassic) |
| fws | Ward Creek (?) terrane, Yolla Bolly terrane (Cretaceous? and Jurassic) |
| QTt | Tulare Formation (Pleistocene and Pliocene?) |
| Tfn | Fanglomerate (lower Pliocene? and upper Miocene) |
| Tvs | Valley Springs Formation (lower Miocene and upper Oligocene) |
| Tpf | Poverty Flat Sandstone (upper and middle Eocene) |
| Tkr | Kreyenhagen Shale (middle Eocene) |
| Tds | Domengine Sandstone (middle Eocene) |
| Tte | Sandstone and siltstone, Tesla Formation (Eocene and Paleocene) |
| Ttq | Quartzose sandstone, Tesla Formation (Eocene and Paleocene) |
| Kmm | Shale, Moreno Formation (Upper Cretaceous) |
| Kms | Sandstone, Moreno Formation (Upper Cretaceous) |
| Kps | Sandstone, Panoche Formation (Upper Cretaceous) |
| Kpc | Conglomerate, Panoche Formation (Upper Cretaceous) |
| Kpm | Mudstone, Panoche Formation (Upper Cretaceous) |
| Km | Mudstone (Upper Cretaceous) |
| Ksh | Shale (Lower Cretaceous) |
| KJm | Mudstone, including Hawk Shale (Lower Cretaceous and Upper Jurassic) |
| Klc | Conglomerate (Lower Cretaceous) |
| Jlc | Lotta Creek Formation (Upper Jurassic) |
| Jbk | Basalt, keratophyre, and quartz keratophyre, Coast Range Ophioline (Jurassic) |
| Jic | Intrusive diabase, diorite, and gabbro, Coast Range Ophioline (Jurassic) |
| Jdw | Dunite-wehrlite, Coast Range Ophiolite (Jurassic) |
| as | Antigorite schist, Coast Range Ophioline (Jurassic) |
| Value | Definition |
|---|---|
| contact, approx. located | unfaulted depositional or intrusive boundary between map units, relatively confident identification, location approximate |
| contact, certain | unfaulted depositional or intrusive boundary between map units, confident identification and location |
| contact, concealed | unfaulted depositional or intrusive boundary between map units, concealed beneath overlying map unit, identification and location dependant on adjacent control |
| contact, inferred | unfaulted depositional or intrusive boundary between map units, identification inferred, location approximate |
| contact, inferred, queried | unfaulted depositional or intrusive boundary between map units, identification inferred, location uncertain |
| fault, approx. located | fault showing mappable disruption of map units or separating coherent Franciscan rock from melange, relatively confident identification, location approximate |
| fault, certain | fault showing mappable disruption of map units or separating coherent Franciscan rock from melange, confident identification and location |
| fault, concealed | fault showing mappable disruption of map units or separating coherent Franciscan rock from melange, concealed beneath overlying map unit, identification and location dependant on adjacent control |
| fault, concealed, queried | fault showing mappable disruption of map units or separating coherent Franciscan rock from melange, concealed beneath overlying map unit, identification and/or location uncertain |
| fault, inferred | fault showing mappable disruption of map units or separating coherent Franciscan rock from melange, identification inferred, location uncertain |
| fault, inferred, queried | fault showing mappable disruption of map units or separating coherent Franciscan rock from melange, identification inferred, location uncertain |
| map boundary | boundary of San Jose 30 X 60-minute quadrangle |
| scratch boundary | boundary without geologic attribute, here used bto close otherwise incomplete unit boundaries (largely narrow stream channels - Qa), assign no line symbol in plotting |
| water boundary | boundary of open water from 1:100,000 base |
| Value | Definition |
|---|---|
| a | amphibolite, garnet amphibolite |
| b | blueschist |
| e | eclogite |
| h | highgrade, undifferentiated |
| m | mica schist |
| t | greenschist |
| y | grayblack schist, Ward Creek terrane? |
| Value | Definition |
|---|---|
| landsline arrow | landslide arrow, points down slope |
| leader | leader, connects unit label annotation with unit polygon |
| contact, certain | Observed contact |
| Value | Definition |
|---|---|
| quadboundarys | boundary of 7.5-minute quadrangle, exclusive of outer boundary of 1:100,000 quadrangle |
| sheetboundary | Outside boundary of mapped area |
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 'Preliminary geologic map of the San Jose 30 X 60-minute quadrangle, 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.
| Data format: |
ARC/INFO export files
of98-795_4a.e00.gz sj-geol Geology: compressed ARC export coverage containing both lines and polygons of98-795_4b.e00 sj-blks Tectonic blocks: ARC export coverage containing points of98-795_4c.e00 sj-anno Annotation: ARC export coverage containing lines (leaders and landslide arrows) and several labels of98-795_5a.e00 sj-qdgrid Quadrangle Index: ARC export coverage containing lines, polygons, and annotation of98-795_6a.e00 sj-drain Drainage: ARC export coverage containing lines of98-795_6b.e00 sj-index Index contours: ARC export coverage containing lines of98-795_6c.e00 sj-inter Land: ARC export coverage containing linesin format ARCE (version 7.2.1) Size: 7 |
|---|---|
| Network links: |
http://pubs.usgs.gov/of/1998/of98-795/of98-795_10a.tar.gz |
| Data format: |
ARCVIEW shapefiles
of97-744_4d.tar.gz Geology: ARCVIEW line and polygon Shape files bundled as one compressed tar file of97-744_4e.tar Tectonic blocks: ARCVIEW point Shape files bundled as one tar file of97-744_4f.tar Annotation: ARCVIEW line Shape files bundled as one tar file of98-795_5b.tar Quadrangle Index: ARCVIEW line and polygon shape files bundled as one tar file of98-795_6f.tar Drainage: ARCVIEW line Shape files bundled as one tar file of98-795_6g.tar Index contours: ARCVIEW line Shape files bundled as one tar file of98-795_6h.tar Intermediate contours: ARCVIEW line Shape files bundled as one tar file of98-795_6i.tar Culture: ARCVIEW line Shape files bundled as one tar file of98-795_6j.tar Land: ARCVIEW line Shape files bundled as one tar filein format Shapefile (version 1.0) Size: 21 |
|---|---|
| Network links: |
http://pubs.usgs.gov/of/1998/of98-795/of98-795_10b.tar.gz |