Geologic map and digital database of the San Bernardino Wash 7.5 minute quadrangle, Riverside County, California

Online link https://geo-nsdi.er.usgs.gov/metadata/open-file/02-498/metadata.faq.html
Description This data set maps and describes the geology of the San Bernardino Wash 7.5 minute quadrangle, Riverside County, southern California. The quadrangle, situated in Joshua Tree National Park in the eastern Transverse Ranges physiographic and structural prov
Originators Powell, Robert E.
Publication U.S. Geological Survey Open-File Report 02-498

Related topics

States or counties

Overview of attributes

The Geologic Map and Digital Database of the San Bernardino Wash 7.5 minute
quadrangle includes five double precision ARCINFO coverages: sbwash_geo (geology);
sbwash_flt (faults and structural line ornamentation); sbwash_dike (dikes);
sbw_structure, (structural point data); and sbwash_carto (cartographic elements,
geologic unit annotation and 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 sbwash_geo includes the following feature tables: (a) A polygon
attribute table (sbwash_geo.pat) that lists labels for the geological
characteristics and identifies plot labels for the rock units represented in the
Postscript (.ps) and Portable Document Format (.pdf) plotfiles of the geologic
maps; (b) Region subclass attribute tables that describe the geospatial
distribution of rock units represented in the Postscript (.ps) and Portable
Document Format (.pdf) plotfiles of the geologic maps (sbwash_geo.patrockunit), the
hierarchical array of stratigraphic parents of rock units in the crystalline
basement (sbwash_geo.patbasement1, sbwash_geo.patbasement2,
sbwash_geo.patbasement3, sbwash_geo.patbasement4), the hierarchical array of
stratigraphic parents of rock units in sedimentary and volcanic cover to the
basement rocks (sbwash_geo.patcover2), and the hierarchical array of stratigraphic
parents of surficial units (sbwash_geo.patsurficial1, sbwash_geo.patsurficial2,
sbwash_geo.patsurficial3, sbwash_geo.patsurficial4, sbwash_geo.patsurficial5).
This hierarchy of stratigraphic units can be related in ArcInfo, ArcMap or ArcView
to display or plot more generalized, derivative geologic maps than that represented
in Postscript (.ps) or Portable Document Format (.pdf) files.  (c) A region
subclass attribute table that describes surface units (veneers)
(sbwash_geo.patsurfunit). (d) A region subclass attribute table that shows those
areas where unit identification is uncertain (sbwash_geo.patident).  (e) An arc
attribute table (sbwash_geo.aat) that describes the contacts that bound rock-unit
polygons.
(2) The coverage sbwash_flt contains and displays the complete distribution of
fault features within the extent of the San Bernardino Wash quadrangle.  Structural
line ornamentation is included in this layer as point data.  Faults are
characterized in two route attribute tables (sbwash_flt.ratsegment and
sbwash_flt.ratfault).
(3) The coverage sbwash_dike includes an arc attribute table (sbwash_dike.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 areal features at a scale of
1:24,000.
(4) The coverages sbw_structure includes a point attribute tables
(sbw_structure.pat) that describe geologic structural point data, including the
types and orientation of bedding and foliation. An annotation subclass (anno.dip -
planar data) displays the dip values associated with each point datum.
(5) The coverage sbwash_carto includes both geologic unit symbol annotation and an
arc attribute table (sbwash_carto.aat) that displays annotation leaders.  Unit
symbols placed outside the perimeter of a particular polygon are identified by
annotation leaders.

http://pubs.usgs.gov/of/2002/0498/pdf/sbwash_pamph.pdf

sbwash_geo.pat

Polygon attribute table that stores alphanumeric symbols for units that characterize lithologic type, surface veneer, landform, and age of earth materials represented by each polygon. In addition, the table stores coded stratigraphic unit symbols.

Label Definition
POLY_LABEL List of alphanumeric symbols that describe geologic characteristics of earth materials represented by each polygon: this attribute is used for data entry. Map units are described in region feature subclasses.
SURF_LABEL Alphanumeric symbol for surface material represented by polygon (unique in this dataset).
ROCK_LABEL Alphanumeric symbol for rock unit represented by polygon (unique in this dataset)
POLY_IDENT An expression of confidence that a map unit represented by a particular polygon has been correctly identified (certain, likely, or questionable)
GMPH_LABEL Alphanumeric symbol for geomorphic unit represented by polygon (unique in this dataset).
PLOT_LABEL Coded symbols used to plot label of geologic units shown on geologic map in Postscript (.ps) and Portable Document Format (.pdf) files. Item can be related to data table, display.plt.

sbwash_geo.patrockunit

Geologic units contained in the database that are displayed on the geologic map in the Postscript (.ps) and Portable Document Format (.pdf) files

Label Definition
UNIT_LABEL Rock-unit label

sbwash_geo.patbasement1

First-order stratigraphic parents of crystalline basement rock units

Label Definition
UNIT_LABEL Rock-unit label

sbwash_geo.patbasement2

Second-order stratigraphic parents of crystalline basement rock units

Label Definition
UNIT_LABEL Rock-unit label

sbwash_geo.patbasement3

Third-order stratigraphic parents of crystalline basement rock units

Label Definition
ROCK_LABEL Rock-unit label

sbwas_geo.patbasement4

Fourth-order stratigraphic parents of crystalline basement rock units

Label Definition
UNIT_LABEL Rock-unit label

sbwash_geo.patsurficial1

First-order stratigraphic parents of surficial rock units

Label Definition
UNIT_LABEL Rock-unit label

sbwash_geo.patsurficial2

Second-order stratigraphic parents of surficial rock units

Label Definition
UNIT_LABEL Rock-unit label

sbwash_geo.patsurficial3

Third-order stratigraphic parents of surficial rock units

Label Definition
UNIT_LABEL Rock-unit label

sbwash_geo.patsurficial4

Fourth-order stratigraphic parents of surficial rock units

Label Definition
UNIT_LABEL Rock-unit label

sbwash_geo.patsurficial5

Fifth-order stratigraphic parents of surficial rock units

Label Definition
UNIT_LABEL Rock-unit label

sbwash_geo.patcover2

Second-order stratigraphic parents of cover rock units

Label Definition
UNIT_LABEL Rock-unit label

sbwash_geo.patsurfunit

Surface units (veneers)

Label Definition
UNIT_LABEL Surface unit label

sbwash_geo.patident

Confidence in rock-unit identification

Label Definition
UNIT_IDENT An expression of confidence that the rock unit areas encompassed by the region have been identified correctly.

sbwash_geo.aat

Geologic contacts, including fault contacts, that bound rock-unit polygons and map boundary

Label Definition
CLASS_TYPE Classification of contact by type
CLASS_ORIG Classification of contact by origin
MOD_SEQ Sequence of processes by which contact has been modified
CLASS_ALT Alternative classifiction of type of contact
AGE_PREF Preferred age of contact
AGE_LINEAGE Hierarchical age list of linear feature
DESCRIPTION Contact description
SYMB Coded integer symbol that relates arc to cartographic line symbol in lineset (geoscamp2.lin)
DEFINITION Degree to which contact is discrete
EXPOSURE An expression of how well a contact is represented by a line (discrete or nondiscrete)
SOURCE_DATA Data source for contact

sbwash_flt.aat

Faults

Label Definition
CLASS_TYPE Classification of line by type (fault)
CLASS_ALT Alternative classification of fault
EXPOSURE Degree to which fault is exposed
LOCATION Accuracy of horizontal position of fault on input base map
SYMB Coded integer symbol that relates arc to cartographic line symbol in lineset (geoscamp2.lin)

sbwash_flt.ratsegment

Fault segments: Arcs between or extending from fault intersections

Label Definition
FLT_SEG Unique identification of fault segment
ANGLE Classification by angle of dip
SEPARATION Classification by separation on fault segments
SLIP Classification by slip on fault segment
AGE Age interval during which movement has occurred along fault segment
BASIS Basis for representation of fault segment
CONFIDENCE An expression of confidence that a fault segment has been correctly identified
SOURCE Data source for fault segment

sbwash_flt.ratfault

Faults, fault strands, fault zones, fault systems, and fault groups

Label Definition
SEPARATION Classification by separation on fault, fault strand, fault zone, fault system or fault group
SLIP Classification by slip on fault, fault strand, fault zone, fault system or fault group
AGE Age interval during which movement occurred on fault, fault strand, fault zone, fault system or fault group
FLTNAME Name of fault, fault strand, fault zone, fault system or fault group
MECH_REG Classification of fault by mechanical regime
KINEM_REG Classification of fault by kinematic regime
TECT_GEN Genetic classification of fault by tectonic system
FLT_DESC Description of fault, fault strand, fault zone, fault system or fault group

sbwash_dike.aat

Dikes

Label Definition
SYMB Coded integer symbol that relates arc to cartographic line symbol in lineset (geoscamp2.lin)
UNIT_LABL Rock-unit label

sbw_structure.pat

Planar structural point data showing bedding and foliation orientation (strike, dip, direction of dip)

Label Definition

ru_summ.dsc

INFO table that summarizes name, age, origin, and lithology of rock units.

Label Definition
UNIT_LABEL Alphanumeric symbol
UNIT_NAME Name of rock unit
AGEPAR_LS List of age names in parent lineage of rock unit stratigraphic age indicated in unit label
AGE_LABEL Name of stratigraphic age of rock unit indicated in unit label
AGECHLD_LS List of names in child lineage of rock unit stratigraphic age indicated in unit label
ARCH_LEVEL Present-day architectural level of rock unit (crystalline basement, cover, surficial deposit, surface veneer)
ENVIR_ORIG Hierarchical list of classification terms for origin and environment of formation of rock unit
UNIT_TYPE Type of rock unit
ROCK_FORM Form or landform of rock unit body
LITH_GROUP List of parent lithologic groups to which rock unit belongs
LITH_PRINC Principal lithologic components of rock unit
LTH_SUBORD Subordinate lithologic components of rock unit
LITH_MINOR Minor lithologic components of rock unit

display.plt

Data table that stores display criteria and data (rock unit colors/SHD, patterns/SHDFIL) to facilitate plotting of derivative maps. Symbolsets are: scamp2.shd (colors), geology2.shd (patterns).

Label Definition

overlay.lut

Data (lookup) table that stores symbols that allow surface veneers to be represented as pattern overlays.

Label Definition

sbwash_carto.aat

Annotation leaders and rock_unit labels derived from sbwash_geo.pat, plot_label

Label Definition