Geologic map of the Lakeview 7.5' quadrangle, Riverside County, California

Online link https://geo-nsdi.er.usgs.gov/metadata/open-file/01-174/metadata.faq.html
Description This data set maps and describes the geology of the Lakeview 7.5' quadrangle, Riverside County, California. The quadrangle encompasses part of the northern Peninsular Ranges Province. Tonalitic granitic rocks of the Cretaceous Peninsular Range batholith
Originators Morton, Douglas M. and Matti, Jonathan C.
Publication U.S. Geological Survey Open-File Report 01-174

Related topics

States or counties

Overview of attributes

Version 1.0 of the Lakeview 7.5' quadrangle comprises three ARC/INFO coverages, of which two
contain geologic data and one contains cartographic features: lkvw_geo (geology), lkvw_pts
(structural point data), and lkvw_anno (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.Two INFO tables, lines.rel and points.rel provide a full description of each of the
geologic line and point features in the database.  Full source citations are provided in the
Entity_and Attribute_Detail_Citation section of this metadata document.
1) The coverage lkvw_geo includes a polygon feature attribute table (lkvw_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 and an arc feature attribute
table (lkvw_geo.aat) that describes the contacts and faults that bound rock-unit polygons.
Line and point identity data are recorded in the .aat and .pat using a system of identity
codes.  Two INFO tables, lines.rel and points.rel, provide a full description of each of the
geological line and point codes in the database.  For display purposes in the .ps and .pdf
geologic maps, the geology coverage includes one annotation subclass: anno.fault, which
contains formal fault names.  In addition, the item TAG allows the user to access (relate to)
a series of INFO data tables that contain additional, detailed, coded geologic data. A
complete description of the polygon, line, and point data coding schemes is available in U.S.
Geological Survey Open-File Reports 97-859, OFR 97-860, and OFR 97-861 (full source citations
follow).
Five INFO data tables are included in the Lakeview database: lakeview_genesis.rel provides
data summarizing the genesis of each of the major rock types that occur within a particular
map rock unit, lakeview_summary.rel provides general information about a rock unit,
lakeview_lithology.rel contains lithologic attributes for the main and secondary lithologic
types in the geologic-map unit, lakeview_protolith.rel describes rock type protoliths, and
lakeview_structure.rel contains geologic structural data.  The tables have identical
architecture.  The item TAG serves as the relate item and there are five additional feature
attribute items, LITH1...LITH5, that represent the major rock types within a rock unit.
Lakeview_structure.rel contains an item STRHIST that contains attributes that describe the
structural history of a particular unit.
2) The coverage lkvw_pts includes a point attribute table (lkvw_pts.pat) that describes both
the types and orientation of bedding, foliation, and lineation.  An annotation subclass
displays the dip or plunge values associated with the point data.
3) The coverage lkvw_anno includes an arc attribute table (lkvw_ldr.pat) that describes
annotation leaders and one annotation subclass, anno.geo, which contains unit labels derived
from PLABL.  Unit symbols that are placed outside the perimeter of a particular polygon
identify that polygon with annotation leaders.

A complete description of the polygon, line, and point data coding schemes is available in the following U.S. Geological Survey Open-File Reports: Matti, J.C., Miller, F.K., Powell, R.E., Kennedy, S.A., Bunyapanasarn, T.P., Koukladas, Catherine, Hauser, R.M., and Cossette, P.M., 1997b, Geologic-point attributes for digital geologic-map databases produced by the Southern California Areal Mapping Project (SCAMP), Version 1.0: U.S.Geological Survey Open-File Report 97-859 Matti, J.C., Miller, F.K., Powell, R.E., Kennedy, S.A., and Cossette, P.M., 1997c, Geologic-polygon attributes for digital geologic-map databases produced by the Southern California Areal Mapping Project (SCAMP), Version 1.0: U.S.Geological Survey Open-File Report 97-860 Matti, J.C., Powell, R.E., Miller, F.K., Kennedy, S.A., Ruppert, K.R., Morton, G.L., and Cossette, P.M., 1997a, Geologic-line attributes for digital geologic-map databases produced by the Southern California Areal Mapping Project (SCAMP), Version 1.0: U.S.Geological Survey Open-File Report 97-861

LKVW_GEO.PAT

Geologic map units

Label Definition
LABL Geologic map unit label. Plain text is substituted for conventional geologic age symbols (Pz for Paleozoic) and unit label subscripts as annotated on map
PLABL Coded geologic map unit label used to generate plot label. Subscripted characters indicate lithologies within the overall unit.
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)
TAG A reference label for subgroups of polygons of the geologic-map unit identified by LABL. Each polygon subgroup has certain attributes in common with all other polygons of the map unit. However, each subgroup may have unique, distinguishing attributes which warrant recognition in the database although those distinguishing characteristics do not warrant recognition as new map units. TAG is defined as LABL followed by an upper-case letter, e.g., QwA, QwB, or QwC, etc. Map units in the Lakeview quadrangle are assigned an A tag designation except for Qyv (QyvA, QyvB and QyvC) and Qyf (QyfA, QyfB and QyfC). TAG serves one additional purpose: it functions as the relate item that associates each polygon with its attributes stored in the five polygon-attribute data tables identified in the overview description.

LKVW_GEO.AAT

Geologic contacts and faults that bound rock-unit polygons

Label Definition
L-SYMB Coded integer symbol that relates arc to cartographic line symbol in lineset geoscamp2.lin
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-NAME Formal name of linear geologic feature

LKVW_PTS.PAT

Structural point data

Label Definition
P-DIP Dip of planar feature
P-STRIKE Azimuthal strike of planar feature
P-SYMB Coded integer symbol that relates point to cartographic point symbol in markerset (geoscamp2.mrk)
P-TAG Coded alpha-numerical symbol that relates point to definition of point type in dictionary look-up 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-DIPDIR Azimuthal direction of dip of planar feature
P-PLUNGE Plunge of linear feature
P-BEARING Azimuthal direction of plunge of linear feature

LKVW_ANNO.AAT

Annotation leaders and unit labels

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