Hydrostructural Maps of the Death Valley Regional Flow System, Nevada and California--Map A: Structural Framework, Neogene Basins, and Potentiometric Surface; Map B: Structural Framework, Earthquake Epicenters, and Potential Zones of Enhanced Hydraulic Conductivity

COLUMN--ITEM_NAME----------WIDTH-----OUTPUT-----TYPE---#_DECIMALS
1-------FNODE#---------------4----------5---------B---------\
5-------TNODE#---------------4----------5---------B---------\
9-------LPOLY#---------------4----------5---------B---------\
13------RPOLY#---------------4----------5---------B---------\
17------LENGTH---------------8---------18---------F---------5
25------<cover>#-------------4----------5---------B---------\
29------<cover>-ID-----------4----------5---------B---------\

COLUMN--ITEM_NAME----------WIDTH-----OUTPUT-----TYPE---#_DECIMALS
1-------AREA-----------------8---------18---------F---------5
9-------PERIMETER------------8---------18---------F---------5
17------<cover>#-------------4----------5---------B---------\
21------<cover>-ID-----------4----------5---------B---------\
****The following coverages were used in both Map A and Map B****
COVERAGE--------ENTITIES---------DESCRIPTION
dvrfspoly-------lines/polygons---base map
halo_bd---------lines------------flow model boundary
hstruc2---------lines------------faults; attributed with ITEM h_code as follows:
ITEM: h_code           DESCRIPTION              SYMBOL
      1                Normal fault             1 (color.lin)
      2                Strike-slip fault        2 (color.lin)
      3                Detachment fault         83 (geoscamp1.lin)
      4                Caldera Boundary         83 (geoscamp1.lin)
      5                Transverse fault         5 (color.lin)
      6                Thrust fault             27 (geology.lin)
      7                Thrust fault (inferred)  37 (geology.lin)
hydrostruc_bb---lines------------displacement symbols on faults
dvrfs_rd--------lines------------roads (minor and major)
dvrfs_hptxt-----points-----------text labels for physiographic features,
                                   including town names.
county_100k-----lines------------county boundaries
nts_outline-----lines------------boundary of Nevada Test Site
nvca------------lines------------State line boundary between California
                                   and Nevada.
stipplebuffer---polygons---------stippled area on faults that have
                                   measurable late Pleistocene or younger
                                   displacement.
townpts---------points-----------locations of towns
pot_cont--------lines------------potentiometric contours with elevations
                                   posted on each contour line.
cald_txt--------points-----------text lables for calderas
flt_txt---------points-----------text lables for faults
****The following coverages are used on Map A only****
hueb, satb, valb-----------------color shaded-relief map, composited from
                                   83-m DEM data from the following USGS
                                   1:250,000-scale quadrangles:  Tonapah,
                                   Lund, Las Vegas, Death Valley,
                                   Caliente, Goldfield, Kingman, and Trona
                                   and include depth to pre-Tertiary
                                   surface.
coldsprgs-------points-----------locations of cold springs
springreg-------points-----------locations of regional springs (24 degrees
                                   C to 35 degrees C).
****The following coverages are used on Map B only****
red, green, blue-----------------color shaded-relief map, composited from
                                   83-m DEM data from the following USGS
                                   1:250,000-scale quadrangles: Tonapah,
                                   Lund, Las Vegas, Death Valley,
                                   Caliente, Goldfield, Kingman, and
                                   Trona.
polybuffer------polygons---------zones that have special geologic
                                   characteristics, as well as seismicity
                                   clusters, that may be consistent with
                                   relatively large hydraulic
                                   conductivities.
polynums--------points-----------roman numeral values used to label the
                                   "polybuffer" cover.
eq78to86--------points-----------earthquake epicenter locations.  Four (4)
                                   ITEMS from this cover were used:
                                   magnitude, date, x-coord and y-coord.
                                   The date values that fell in the range
                                   of 1978 to 1986 were used for this map.