Isostatic Gravity Map of the Death Valley Ground-Water Model Area, Nevada and California

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Description An isostatic gravity map of the Death Valley groundwater model area was prepared from over 40,0000 gravity stations as part of an interagency effort by the U.S. Geological Survey and the U.S. Department of Energy to help characterize the geology and hydro
Originators Ponce, David A.; Blakely, Richard J.; Morin, Robert L.; and Mankinen, Edward A.
Publication U.S. Geological Survey Miscellaneous Field Studies Map MF-2381-C

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Overview of attributes

The databases described in this report were compiled in ARC/INFO, a commercial Geographic Information System by Environmental Systems Research Institute.  Almost all the attributes in the various attribute tables of the coverages included in the report are set or calculated by ARC/INFO.  The exceptions being <COVER>-ID, LINETYPE, UNIT, POINTTYPE, STRIKE, and DIP.  LINETYPE, UNIT and POINTTYPE are author added aspects of the coverages added to the PAT or AAT and are used to describe the type of line(LINETYPE), area (UNIT), point or arcmarker (POINTTYPE).  LINETYPE and POINTTYPE are each defined with WIDTH 35, OUTPUT 35, and TYPE C (character).  UNIT is defined with WIDTH 5, OUTPUT 5, and TYPE C.  STRIKE and DIP are only present in HRSPOINT.PAT, because they describe bedding orientation of point objects.  Each is defined with WIDTH and OUTPUT of 3,and TYPE I (integer).

This report combined with hrsmap.eps, hrsmap.pdf, hrsgeo.doc, hrsgeo.txt or hrsgeo.pdf


attribute table of HRSPOLY

Label Definition
UNIT Geologic unit label
PATTERN definition of graphical pattern fill for polygons


Attribute table of HRSPOLY

Label Definition
LINETYPE Type of geologic or geographic feature denoted by a line in the database.
NAME Feature name for annotation
POINTTYPE arc marker point type


Attribute table of HRSFOLD

Label Definition
LINETYPE Type of geologic or geographic feature denoted by a line in the database.
POINTTYPE Arc marker point type


Attribute table of HRSPOINT

Label Definition
POINTTYPE The type of planar feature which was observed and the orientation of which was measured at this point.
DIP The inclination of planar structures measured in degrees down from horizontal.
STRIKE The orientation of a horizontal line in an inclined planar structure measured in degrees clockwise from north.
NAME Name of geographic point feature, used only if necessary