Online link | https://geo-nsdi.er.usgs.gov/metadata/map-mf/2381/a/metadata.faq.html |
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Description | This digital geologic and tectonic database of the Death Valley ground-water model area, as well as its accompanying geophysical maps, are compiled at 1:250,000 scale. The map compilation presents new polygon, line, and point vector data for the Death Va |
Originators | Workman, Jeremiah B.; Menges, Christopher M.; Page, William R.; Taylor, Emily M.; Ekren, E. Bartlett; Rowley, Peter D.; Dixon, Gary L.; Thompson, Ren A.; and Wright, Laren A. |
Publication | U.S. Geological Survey Miscellaneous Field Studies Map MF-2381-A |
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, LTYPE, PTYPE, PTTYPE, PATTERN, STRIKE, and DIP. LTYPE, PTYPE and PTTYPE are author added aspects of the coverages added to the PAT or AAT and are used to describe the type of line (LTYPE), area (PTYPE), point or arcmarker (PTTYPE). LTYPE and PTTYPE are each defined with WIDTH 35, OUTPUT 35, and TYPE C (character). PTYPE is defined with WIDTH 5, OUTPUT 5, and TYPE C. STRIKE and DIP are only present in HR_DIP.PAT, because they describe bedding orientation of point objects. Each is defined with WIDTH and OUTPUT of 3, and TYPE I (integer). PATTERN was another author-added attribute only in HR_POLY.PAT, and is defined by WIDTH 3, OUTPUT 3, and TYPE I. The data in PATTERN correlates directly with specific values in the PTYPE field. One coverage not described is HR_ANNO. This coverage contains only annotations, and leader placement. There are no defined attributes for this coverage.
The report combined with hrmap.eps, hrmap.pdf, hrgeo.doc, hrgeo.txt or hrgeo.pdf
attribute table of hr_poly
Label | Definition |
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PTYPE | Geologic unit label |
PATTERN | Graphic fill pattern |
attribute table of hr_poly
Label | Definition |
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LTYPE | Type of geologic or geographic feature denoted by a line in the database. |
PTTYPE | arc marker point type |
Attribute table of HR_FOLD
Label | Definition |
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LTYPE | Type of geologic or geographic feature denoted by a line in the database. |
PTTYPE | Arc marker point type |
PLUNGE | The inclination of a fold axis if obviously tilted in one or many directions |
Attribute table of HR_DIP
Label | Definition |
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PTTYPE | 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. |