Bedrock geologic map of the Hubbard Brook Experimental Forest, Grafton County, New Hampshire

Online link https://geo-nsdi.er.usgs.gov/metadata/open-file/00-45/metadata.faq.html
Description The bedrock geology of the Hubbard Brook Experimental Forest, Grafton County, New Hampshire is described in this report of new field investigation. The database includes contacts of bedrock geologic units, faults, folds, and other structural geologic inf
Originators Burton, William C.; Walsh, Gregory J.; and Armstrong, Thomas R.
Publication U.S. Geological Survey Open-File Report 00-45

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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