Geologic map and digital database of the Conejo Well 7.5 minute quadrangle, Riverside County, California

Online link https://geo-nsdi.er.usgs.gov/metadata/open-file/01-31/metadata.faq.html
Description This data set maps and describes the geology of the Conejo Well 7.5 minute quadrangle, Riverside County, southern California. The quadrangle, situated in Joshua Tree National Park in the eastern Transverse Ranges physiographic and structural province, enc
Originators Powell, Robert E. and Cossette, Pamela M.
Publication U.S. Geological Survey Open-File Report 01-31

Related topics

States or counties

Overview of attributes

The geologic map and digital database of the Conejo Well
7.5 minute quadrangle includes five geospatial datasets as
ARC/INFO coverages: cwell_geo (geology), cwell_dk (dikes),
cwell_str (structural point data), cwell_orn (structural
line ornamentation), and cwell_ldr (annotation leaders).
Geospatial entities in ARC/INFO coverages have the
following software-defined attributes: <cover>.pat contains
AREA, PERIMETER, cover#, and cover-ID; <cover>.aat contains
FNODE#, TNODE#, LPOLY#, RPOLY#, LENGTH, cover#, and
cover-ID. User-defined attributes are described in detail
below.
(1) The coverage cwell_geo includes the following feature
attribute tables: (a) a polygon attribute table
(cwell_geo.pat) that describes the geospatial distribution
of rock units represented in the Postscript (.ps) and
Portable Document Format (.pdf) plotfiles of the geologic
maps; (b)region subclass attribute tables
(cwell_geo.patmetunit, cwell_geo.patpedunit,
cwell_geo.patplutunit, cwell_geo.patsedunit,
cwell_geo.patveinunit, cwell_geo.patvolcunit,
cwell_geo.hydaltunit) that describe all geologic units
contained in the database; and (c) an arc attribute table
(cwell_geo.aat) that describes the contacts and faults that
bound rock-unit polygons.  For display purposes in the .ps
and .pdf geologic maps, the geology coverage includes one
annotation subclass (anno.geo) which contains unit labels
derived from the coded item PLABL.
(2) The coverage cwell_dk includes an arc attribute
table (cwell_dk.aat) that describes hypabyssal dikes.
Dikes are planar intrusive features that intersect
the Earth's surface as linear features; they are
represented as lines where their surface widths are
too narrow to be represented as polygons at a scale
of 1:24,000.
(3) The coverage cwell_str includes a point attribute
table (cwell_str.pat) that describes geologic
structural point data, including the types and
orientation of bedding, foliation, and lineation. An
annotation subclass (anno.value) displays the dip or
plunge values associated with point data.
(4) The coverage cwell_orn includes a point
attribute table (cwell_orn.pat) that describes
structural line ornamentation. An annotation subclass
(anno.line) displays the sense of movement on a fault.
(5) The coverage cwell_ldr includes an arc
attribute table (cwell_ldr.pat) that describes
annotation leaders. Unit symbols that are placed
outside the perimeter of a particular polygon
identify that polygon with annotation leaders.

http://pubs.usgs.gov/of/2001/of01-031/cwell_pamph.pdf

cwell_geo.pat

Geologic units shown on geologic map in Postscript (.ps) and Portable Document Format (.pdf) files

Label Definition
LABL Geologic map unit label. Plain text is substituted for conventional geologic age symbols (Pr for Proterozoic; Tr for Triassic) and unit label subscripts as shown on map
PLABL Coded geologic map unit label used to generate plot label.
SHDPS Coded integer that relates polygon to color in shadeset scamp2.shd
SHDFIL Coded integer that relates polygon to fill pattern in shadeset geology2.shd
NAME Geologic name of map unit (see list under LABL attribute)

cwell_geo.patmetunit

Metamorphic units contained in the database

Label Definition
LABL Metamorphic unit label
PARENT Label for metamorphic unit of next higher stratigraphic rank than that of unit indicated in LABL
CHILD Labels for metamorphic units of lower stratigraphic rank than that of unit indicated in LABL
UTYPE Class of geologic unit
NAME Name of metamorphic unit
AGE Age of metamorphic unit
PLABL Coded geologic map unit label used to generate plot label.
SHDPS Coded integer that relates polygon to color in shadeset scamp2.shd
SHDFIL Coded integer that relates polygon to fill pattern in shadeset geology2.shd

cwell_geo.patpedunit

Pedogenic units contained in the database

Label Definition
LABL Pedogenic unit label
PARENT Label for pedogenic unit of next higher stratigraphic rank than that of unit indicated in LABL
CHILD Labels for pedogenic units of lower stratigraphic rank than that of unit indicated in LABL
UTYPE Class of geologic unit
NAME Name of pedogenic unit
AGE Age of pedogenic unit
PLABL Coded geologic map unit label used to generate plot label.
SHDPS Coded integer that relates polygon to color in shadeset scamp2.shd
SHDFIL Coded integer that relates polygon to fill pattern in shadeset geology2.shd

cwell_geo.patplutunit

Plutonic units contained in the database

Label Definition
LABL Plutonic unit label
PARENT Label for plutonic unit of next higher stratigraphic rank than that of unit indicated in LABL
CHILD Labels for plutonic units of lower stratigraphic rank than that of unit indicated in LABL
UTYPE Class of geologic unit
NAME Name of plutonic unit
AGE Age of plutonic unit
PLABL Coded geologic map unit label used to generate plot label.
SHDPS Coded integer that relates polygon to color in shadeset scamp2.shd
SHDFIL Coded integer that relates polygon to fill pattern in shadeset geology2.shd

cwell_geo.patsedunit

Sedimentary units contained in the database

Label Definition
LABL Sedimentary unit label
PARENT Label for sedimentary unit of next higher stratigraphic rank than that of unit indicated in LABL
CHILD Labels for sedimentary units of lower stratigraphic rank than that of unit indicated in LABL
UTYPE Class of geologic unit
NAME Name of sedimentary unit
AGE Age of sedimentary unit
PLABL Coded geologic map unit label used to generate plot label.
SHDPS Coded integer that relates polygon to color in shadeset scamp2.shd
SHDFIL Coded integer that relates polygon to fill pattern in shadeset geology2.shd

cwell_geo.patveinunit

Hydrothermal vein units contained in the database

Label Definition
LABL Hydrothermal vein unit label
PARENT Label for hydrothermal vein unit of next higher stratigraphic rank than that of unit indicated in LABL
CHILD Labels for hydrothermal vein units of lower stratigraphic rank than that of unit indicated in LABL
UTYPE Class of geologic unit
NAME Name of hydrothermal vein unit
AGE Age of hydrothermal vein unit
PLABL Coded geologic map unit label used to generate plot label.
SHDPS Coded integer that relates polygon to color in shadeset scamp2.shd
SHDFIL Coded integer that relates polygon to fill pattern in shadeset geology2.shd

cwell_geo.patvolcunit

Volcanic and hypabyssal units contained in the database

Label Definition
LABL Volcanic or hypabyssal unit label
PARENT Label for volcanic or hypabyssal unit of next higher stratigraphic rank than that of unit indicated in LABL
CHILD Labels for volcanic or hypabyssal units of lower stratigraphic rank than that of unit indicated in LABL
UTYPE Class of geologic unit
NAME Name of volcanic or hypabyssal unit
AGE Age of volcanic or hypabyssal unit
PLABL Coded geologic map unit label used to generate plot label.
SHDPS Coded integer that relates polygon to color in shadeset scamp2.shd
SHDFIL Coded integer that relates polygon to fill pattern in shadeset geology2.shd

cwell_geo.aat

Geologic contacts and faults that bound rock-unit polygons

Label Definition
L-TAG Coded alpha-numerical symbol that relates arc to definition of line type in dictionary look-up table (lines.rel). For description of attributes in line classification dictionary, refer to USGS Open-File Report 97-861 (see Entity_and_Attribute_Detail_Citation)
L-SYMB Coded integer symbol that relates arc to cartographic line symbol in lineset look-up table (geoscamp2.lin)

cwell_dk.aat

Dikes

Label Definition
LTYPE Linear feature type
LABL Geologic map unit labels, in plain text
L-SYMB Coded integer symbol that relates arc to cartographic line symbol in lineset look-up table (geoscamp2.lin)
NAME Lithologic name of dike

cwell_str.pat

Structural point data

Label Definition
P-TAG Coded alpha-numerical symbol that relates point to definition of point type in dictionary INFO table, points.rel. For description of attributes in point classification dictionary, refer to USGS Open-File Report 97-859 (see Entity_and_Attribute_Detail_Citation)
P-SYMB Coded integer symbol that relates point to cartographic point symbol in markerset look-up table (geoscamp2.mrk)
P-STRIKE Azimuthal strike of planar feature
P-DIP Dip of planar feature
P-DIPDIR Azimuthal direction of dip of planar feature
P-PLUNGE Plunge of linear feature
P-BEARING Azimuthal direction of plunge of linear feature
P-SOURCE Source of data
PTTYPE Structural point datum type

cwell_orn.pat

Line ornamentation

Label Definition
P-TAG Coded alpha-numerical symbol that relates point to definition of point type in dictionary INFO table, points.rel. For description of attributes in point classification dictionary, refer to USGS Open-File Report 97-859 (see Entity_and_Attribute_Detail_Citation)
P-SYMB Coded integer symbol that relates point to cartographic point symbol in markerset look-up table (geoscamp2.mrk)
PTTYPE Line ornamentation type

cwell_ldr.aat

Annotation leader

Label Definition
L-SYMB Coded integer symbol (1) that relates arcs to cartographic line symbol in lineset geoscamp2.lin