Landslide initiation locations in Entre Ríos quadrangle, Guatemala

Online link https://geo-nsdi.er.usgs.gov/metadata/open-file/01-443/Entre_Rios/ip24621.faq.html
Description This cover contains initiation location of landslides formed during Hurricane Mitch in October - November 1998. Locations were identified by manually selecting the upslope location of the landslides in the cover ls23622.
Originators Bucknam, Robert C.; Coe, Jeffrey A.; Mota, Manuel Antonio; Godt, Jonathan W.; Tarr, Arthur C.; Bradley, Lee-Ann; Rafferty, Sharon A.; Hancock, Dean; Dart, Richard L.; and Johnson, Margo L.
Publication U.S. Geological Survey Open-File Report 01-443

Related topics

States or counties

Overview of attributes

>The geologic unit polygons in the CONTX coverage
>was filled with colors from the colornames.shd shadeset in
>Arc/Info.  A lookup table was created in Arc/Info to fill the
>polygons.  The lookup table contains the items CODE and SYMBOL.
>Here is the content of the lookup table:
>Record  CODE       SYMBOL
>     1  Dg         110
>     2  Dkg        113
>     3  Dp         119
>     4  Sp          19
>     5  Spp         60
>     6  Srb         95
>     7  Srcs        47
>     8  Srfg        93
>     9  Srg         96
>    10  Srgt       101
>    11  Srlg        49
>    12  Srq         84
>    13  Srr         79
>    14  Srrt        81
>    15  Srs         85
>
>The following is a brief description of the ARC/INFO coverages.
>GEOLOGIC COVERAGES:
>CONTX coverage:
> Item CODE in CONTX.PAT contains the map unit designators.
>     (Srb, Dkg, etc.)
> Item LBLTXT in CONTX.PAT is used for selective plotting of code
>      labels; valid entry is 'n' or item is left blank.
> Item TYPE is a general category of rock type:
>      m=metamorphic and p=plutonic
> Item LINTYPE in CONTX.AAT is used for plotting different line types.
>      Valid entries are "concealed" where contacts are under water,
>      or item is left blank.
>      Concealed plotted as dotted line.
>      Blank plotted as solid line.
> Look-up table CONTX.LUT contains the following items:
>     CODE = map unit designator
>     AGE_SORT = a relative number used to sort the units by age
>     FORMATION = the formation name
>     AGE = geologic age of the map unit
>     MAP_UNIT = simplified description of rock type(s)
>                (Complete description is in the accompanying text)
> Lithology attribute table CONTX.LITH contains the following items:
>     CODE = map unit designator
>     SURF_BED = surficial or bedrock unit
>     LITHPRI = primary lithology in the map unit
>     LITHSEC = secondary lithology in the map unit
>     FORM = formation name
>     ROCKCLASS = rock type
>     AGE = geologic age of the map unit
>     FOSSIL
>     COLOR
>     MINPRI = most characteristic minerals
>     MINSEC = additional common minerals
>     MINOTH = accessory minerals
>     CONTUP
>     CONTLOW
>     FOLPRI = dominant generation of foliation in the rock
>     FOLSEC = subordinate generation of foliation in the rock
>     RMPM = regional prograde-metamorphic minerals
>     RMRM = regional retrograde-metamorphic minerals
>     DEFORMAGE = age of deformation
> After importing the CONTX.E00 file you will find the look-up table
> and the lithology attribute table in the INFO directory.  If you are
> using ArcView you can add the tables to the project by navigating to
> the INFO directory, specifying the INFO file type, and selecting the
> desired table.  If you are using Arc/Info you can access the data in
> the two tables using either the JOINITEM or RELATE operations and the
> INFO item CODE.
>
>Structural geology point coverages POINT and STRUX:
>Coverage POINT contains all of the structural data points and the
>points in the database are located within the polygons in the outcrop
>coverage -- the point locations are the original mapped locations.
>Coverages STRUX contains structural data used for cartography on
>Plate 1.  The locations of the points in STRUX have been moved from
>the original locations in POINT for plotting purposes only.
>Any spatial analysis should use the POINT coverage data.
>The STRUX coverage contains annotation for dip and plunge values.
>The annotation is not present in the POINT coverage.
>The PAT files for the point coverages contain the following
>user-defined items:
>
>ITEM NAME
>STATION     number of field station
>POSFMT      position format from PLGR+96 GPS unit
>ZONE        UTM zone from PLGR+96 GPS unit
>HDATUM      horizontal datum from PLGR+96 GPS unit
>HRZERR      horizontal error from PLGR+96 GPS unit
>ELEV        elevation from PLGR+96 GPS unit
>VDATUM      vertical datum from PLGR+96 GPS unit
>ELEVUNIT    elevation unit from PLGR+96 GPS unit
>Note on HRZERR --
>	The database includes the horizontal accuracy of point
>	features as measured and recorded by the PLGR+96 GPS unit.
>	The stated accuracy of the PLGR+96 is +/- 16 meters.
>Note on POSFMT through ELEVUNIT --
>	These fields are recorded by the PLGR+96 GPS unit.  In the
>	PAT files, some points do not have entries in these fields.
>	These points have been located without the use of GPS.
>The following items are described in more detail below:
>TYPE
>SUB_TYPE
>STRIKE      units in degrees
>DIP         units in degrees
>DIPDIR      units in degrees
>REL_AGE
>SYMBOL
>SYMBOL_ANG  units in degrees
>ROTATION
>SPACING     units in meters
>WIDTH       units in meters
>APERTURE    units in meters
>MIN1
>MIN2
>MIN3
>CODE        relate item for dikes, same as code in CONTX.PAT and LUT
>TOPOFEAT
>NO_MSMT     number of multiple measurements for some brittle features
>
>Here is the detailed  explanation of some of the items:
> DIP = dip value (planar data) or plunge value (linear data)
> STRIKE = measured from north in right-hand rule (planar data)
> DIPDIR = Direction of dip (planar data) or trend (linear data)
>          measured from north
>For STRIKE and DIPDIR:
>                                               0
>        North = 0                              |
>        East = 90                     270 -----|----- 90
>        South = 180                            |
>        West = 270                            180
>
>SYMBOL_ANG  = refers to a standard cartesian angle measured
>   from EAST:
>                                              90
>        North = 90                            |
>        East = 0                     180 -----|----- 0
>        South = 270                           |
>        West = 180                           270
>
>   SYMBOL_ANG is used for symbol rotation.
>   In ARC/INFO calculate pseudo item $angle = symbol_ang
>   Planar symbols with symbol_ang = 0 look like this:
>                            __________
>                                \/
>   Linear symbols with symbol_ang = 0 look like this:
>                                 ----->
>SYMBOL refers to a pattern number in GEOLOGY.MRK.
>ROTATION refers to the rotation sense of minor folds as viewed
>down plunge or offset on minor faults.  Valid entries are:
>     clockwise (right-lateral) = cw
>     counterclockwise (left-lateral) = cc
>REL_AGE refers to the relative age of fabrics.
>Valid entries are: n-1, n, n+1, n+2, etc.
>TYPE refers to the general type of geologic structure.
>Valid entries are: planar, linear, or other
>SUB_TYPE refers to the specific geologic structure.
>Valid entries used in this report arranged by TYPE:
>Record  CASE# FREQUENCY TYPE       SUB_TYPE
>     1      1     4     linear     elongation
>     2      2    76     linear     fold axis
>     3      3    14     linear     glacial grooves
>     4      4     6     linear     intersection lineation
>     5      5     5     linear     mineral lineation
>     6      6     1     linear     refolded fold axis
>     7      7    13     linear     slickensides
>     8      8     1     other      spring
>     9      9    79     planar     axial surface
>    10     10    28     planar     bedding
>    11     11    22     planar     cleavage
>    12     12    11     planar     deformed schistosity
>    13     13    76     planar     dike
>    14     14     2     planar     fault
>    15     15    22     planar     foliation
>    16     16     4     planar     graded bedding
>    17     17    17     planar     igneous flow foliation
>    18     18  1579     planar     joint
>    19     19    17     planar     joint set
>    20     20    24     planar     joint zone
>    21     21    76     planar     layer parallel schistosity
>    22     22     3     planar     mylonite
>    23     23    13     planar     normal fault
>    24     24     4     planar     overturned bedding
>    25     25     1     planar     refolded axial surface
>    26     26     1     planar     reverse fault
>    27     27   599     planar     schistosity
>    28     28    24     planar     vein
>The following are also used in the POINT coverage:
>SPACING	spacing of joints in joint sets in meters
>WIDTH		width of joint zone or thickness of dike in meters
>APERTURE	aperture of joint openings in meters
>The following are used in the POINT coverage to describe minerals
>on joint surfaces and in veins:
>MIN1		primary mineral
>MIN2		secondary mineral
>MIN3		tertiary mineral
>The following values are used in the report, some were modified
>after Kretz (1983):
>ank   ankerite
>dol   dolomite
>hem   hematite
>lm    limonite
>ms    muscovite
>pyl   pyrolusite
>qtz   quartz
>sil   sillimanite
>sul   sulfides
>tur   tourmaline
>Kretz, R., 1983, Symbols for rock-forming minerals: American
>Mineralogist, v. 68, nos. 1-2, p. 277-279.
>
>TOPOFEAT	topographic feature parallel to geologic structure
>Values used in this report include:
>cliff
>stream
>joint face
>
>Line coverage FAULT contains the following item:
>  TYPE = type of fault (normal, reverse, thrust, etc.)
>
>Line coverage LINES contains the following item:
>  TYPE = type of geologic line (axial traces, folds, isograds, cross-section lines, etc.)
>
>Polygon coverage NEAT represents the neat line boundary of the Hubbard Brook Experimental Forest project area
>
>Polygon coverage OUTCX represents the location of bedrock outcrops within the Hubbard Brook Experimental Forest project area
>
>BASE MAP COVERAGES:
>Polygon coverage BOUNDS represents the political boundary of the Hubbard Brook Experimental Forest
>
>Line and polygon coverage HYDRO represents the surface water hydrography within the Hubbard Brook Experimental Forest
>
>Line coverage ROADS contains the following items:
>  GRANITID = GRANIT-assigned feature number
>  CLASS = GRANIT-assigned feature number
>
>Line coverage TOPO contains the following items:
>  ELEV = elevation in feet above mean sea level
>  CI = contour interval (in feet) used for plotting
>  SYMBOL = line symbol used for plotting
>
>Point coverage WELLS contains the following items:
>  ROCKTYPE = Lower Rangeley (lr), Upper Rangeley (ur), and Concord Granite (cg)
>  SYMB = symbol value used for rplotting
>  PTYPE = point type (well)

http://pubs.usgs.gov/of/2000/of00-045/of0045pm.pdf