General distribution of geologic materials in the southern San Francisco Bay region, California: A digital map database

General distribution of geologic materials in the southern San Francisco Bay region, California: A digital map database

Online link	https://geo-nsdi.er.usgs.gov/metadata/open-file/93-693/metadata.faq.html
Description	The ssfb_m1 digital map database, which is compiled from 1970's vintage sources, represents the general distribution and identity of geologic materials in the southern San Francisco Bay region, California, west of the Calaveras fault. It is not a geol
Originators	Wentworth, Carl M.
Publication	U.S. Geological Survey Open-File Report 93-693

Related topics

Bedrock geologic units, Geologic maps, Geology, Geospatial datasets, Surficial geologic units, GeoscientificInformation

States or counties

Alameda, Contra Costa, Marin, Napa, San Mateo, Santa Clara, Santa Cruz, Solano, Sonoma

alphstat.shp, endvstat.shp, ocnsstat.shp, seaxstat.shp, ny_stats.shp

shapefiles

Label	Definition
`STATION`	Station identification label
`LONGITUDE`	x location of station
`LATITUDE`	y location of station
`CRUISE`	cruise number to identify on what cruise station was occupied
`DEPTH (METERS)`	water depth at station location
`UTC`	UTC is Universal Time Code that records Julian Day and Time adjusted to Greenwich Mean Time.
`YEAR`	The year in which station was occupied
`PHOTOGRAPH`	Informs whether or not pictures were taken at this station
`VIDEO TAKEN`	Informs whether or not video was taken at this station
`SAMPLE TAKEN`	Informs whether or not a sediment sample was taken at this station
`FILE PATH`	The file path used by the hotlink to locate the index.htm file for that station.

alphseds.shp, endvseds.shp, ocnsseds.shp, seaxseds.shp, ny_seds.shp

shapefiles

Label	Definition
`STATION`	Station identification label
`LONGITUDE`	x location of station
`LATITUDE`	y location of station
`CRUISE`	cruise number to identify on what cruise station was occupied
`DEPTH (METERS)`	water depth at station location
`JD_TIME`	UTC is Universal Time Code that records Julian Day and Time adjusted to Greenwich Mean Time.
`YEAR`	The year in which station was occupied
`MASS (GRAMS)`	Total weight of sediment sample in grams
`PERCENT SAND`	Percent of sample consisting of sand
`PERCENT GRAVEL`	Percent of sample consisting of gravel
`PERCENT SILT`	Percent of sample consisting of silt
`PERCENT CLAY`	Percentage of sample consisting of clay
`CLASS`	Classification of grain size measurements
`MEDIAN`	Median grain size of sample
`MEAN`	mean grain size of sample
`STANDARD DEVIATION`	Standard deviation of grain size from a sample mean, this is a measure of sorting.
`SKEW`	Skewness is a measure of assymetry within a sediment sample.
`KURTOSIS`	Kurtosis is a measure of peakedness in a curve representing a sediment sample.

alphpics.shp, endvpics.shp, ocnspics.shp, seaxpics.shp, ny_pics.shp

shapefiles

Label	Definition
`STATION`	Station identification label
`CRUISE`	cruise number to identify on what cruise station was occupied
`LONGITUDE`	x location of station
`LATITUDE`	y location of station
`DEPTH (METERS)`	water depth at station location
`JD_TIME`	UTC is Universal Time Code that records Julian Day and Time adjusted to Greenwich Mean Time.

alphvid.shp, endvvid.shp, ocnsvid.shp, seaxvid.shp, ny_vid.shp, alvidst.shp, envidst.shp, ocvidst.shp, nyvstart.shp

shapefiles

Label	Definition
`STATION`	Station identification label
`LONGITUDE`	x location of station
`LATITUDE`	y location of station
`CRUISE`	cruise number to identify on what cruise station was occupied
`YEAR`	The year in which station was occupied
`MONTH`	The month in which video was taken
`DAY`	The day on which video was taken
`HOUR`	The hour in which station was occupied
`MINUTE`	The minute in which video position was taken
`SECOND`	The second in which video position was taken

movlendv.shp, movsendv.shp, movlocns.shp, movsocns.shp, movlocl.shp, movlocs.shp

shapefiles

Label	Definition
`LATITUDE`	y location of station
`LONGITUDE`	x location of station
`FILE PATH`	The file path used by the hotlink to locate the index.htm file for that station.

nymoors.shp

shapefile

Label	Definition
`SITE__`	Labels assigned to mooring sites.
`MOORING_TY`	Type of mooring used
`MOORING_`	used to identify the type of instrumentation used.
`SITE_NAME`	name of research location
`DEC__LATIT`	lattitude in decimal degrees
`DEC__LONGT`	longitude in decimal degrees
`LATITUDE`	latitude in degrees and decimal minutes
`LONGITUDE`	longitude in degrees and decimal minutes
`DATE_IN`	date instrument was placed in water
`DATE_OUT`	date instrumentation was taken out of water
`WATER_DEPT`	depth of water in which mooring was placed
`INST_DEPTH`	depth of instumentation placed on mooring