The complete geologic map database comprises four
component ArcINFO coverages (jsp24k, jsppnt, jspcontrol,
and jspcontour).  The jsp24k coverage contains all contact
lines and label points for each of the map polygons. The
jsppnt coverage includes point data that represents bedding
attitude and descriptive symbology for the jsp24k coverage
fault lines.  The jspcontrol coverage contains point data
that represents elevation control points used by the geologist
during field mapping.  The jspcontour coverage contains
elevations of the base of the Boone Formation.
>DATABASE STRUCTURE - ARC/INFO ====================================
>
>Jasper Geology Coverage (jsp24k)
>
>AAT
>
>The arc attribute table contains two user-defined items:
>
>Item name	width   output 	type
>DESCRIPTION  	25       25	c
>LINECODE      	 5        5 	n
>
>The item 'LINECODE' contains the number that corresponds to
>a line symbol in ArcInfo lineset carto.lin
>
>contact = 1
>quad boundary = 1
>cross-section = 18
>exposed fault = 102
>inferred fault = 110
>concealed fault = 149
>
>PAT
>
>The polygon attribute table contains four user-defined items:
>
>Item name	width   	output   	type
>GEOLOGY      	10       	10       	C
>COLOR	      	 3        	 3       	N
>HATCH	     	10       	10       	I
>SPECGEO		10  	  	10 		C
>
>The item 'geology' corresponds to the geologic code (ex: Qty,
>   Qto)
>The item 'color' corresponds to the appropriate number in the
>   shadeset wpgcmykg.shd
>The item 'hatch' is used to specify the hatch marks required
>   to plot Mbs units.  The item 'hatch' has a value of 29 for Mbs
>   (corresponding to an appropriate hatch symbol in the shadeset
>   plotter.shd) and a value of zero for every other geologic unit.
>The aml used to plot this map will shade the polygons using the
>   item 'color' and the shadeset wpgcmykg.shd; selected polygons will
>   be shaded a second time using the item 'hatch' and the
>   shadeset plotter.shd.
>The item 'specgeo' is used to specify special geologic
>   characters associated with the age of the lithologic units
>   (ex: Pennsylvanian). These are plotted using font 027.
>
>Qty	Younger terrace and alluvium deposits (Holocene and late Pleistocene)
>Qto	Older terrace and alluvium deposits (Quaternary)
>Qc	Colluvial deposits (Quaternary)
>Pbu	Upper part of Bloyd Formation (Pennsylvannian)
>Pbl	Lower part of Bloyd Formation (Pennsylvanian)
>Phg	Prarie Grove Member of Hale Formation (Pennsylvanian)
>Phc	Cane Hill Member of Hale Formation (Pennsylvanian)
>Mp	Pitkin Limestone (Mississippian)
>Mf	Main body of Fayetteville Shale (Mississippian)
>Mfw	Wedington Sandstone Member(Mississippian)
>Mbv	Batesville Sandstone(Mississippian)
>Mb	Main body of Boone Formation (Mississippian)
>Mbs	St. Joe Limestone Member (Mississippian)
>Of	Fernvale Limestone (Ordovician)
>Oe	Everton Formation (Ordovician)
>Op	Powell Dolomite (Ordovician)
>
>Jasper Strike-Dip Coverage (jsppnt)
>
>PAT
>
>The point attribute table contains 8 user defined items:
>
>Item name  	width   	output   	type
>DIP      	10	 	10      	I
>AZIMUTH      	8        	8      		I
>MARKER		10	 	10	   	I
>DESCRIPTION  	20		20		C
>ARROWAZ		4		4		I
>DIAMAZ		4		4		I
>ARROWDIP   	4 		4		I
>DIAMDIP		4		4		I
>
>The item 'dip' is the angle that the bed dips from the horizontal.
>The item 'azimuth' is the direction of strike of the bed using azimuthal
>   measurements (N = 0, E = 90, S = 180, W = 270)
>The item 'marker' is used to specify the symbol from
>   geoscamp1.mrk used for plotting.
>The item 'description' provides a brief explanation of the
>   symbol type.
>The item 'arrowaz' is used to specify the azimuth of a fault
>   dip.
>The item 'diamaz' is used to specify the azimuth of a fault rake.
>The item 'arrowdip' is used to specify the angle associated
>   with a fault dip arrow symbol.
>The item 'diamdip' is used to specify the angle associated
>   with a fault rake diamond symbol.
>
>
>Jasper Control Point Coverage (jspcontrol)
>
>PAT
>
>The point attribute table contains 2 user defined items:
>
>Item name  		width   	output   	type
>VALUE      		10	 	10      	I
>BOONE_FORM		10		10		C
>
>The item 'value' is used to specify the elevation of the control
>   point in feet.
>The item 'boone_form' specifies either the top or bottom of the
>   Boone Formation.
>
>
>Jasper Structure Contour Coverage (jspcontour)
>
>AAT
>
>The arc attribute table contains one user defined item:
>
>Item name		width   	output   	type
>CONTOUR			10		10		I
>
>The item contour contains a value for the elevation of the base
>   of the Boone Formation, in feet above Mean Sea Level.

http://pubs.usgs.gov/mf/2001/mf-2356/mf-2356textonly.pdf