>Coverage names in this dataset:
>SMPOLY
>SMLINE
>SMPOINT
>
>SMPOLY.PAT:<
>
>COLUMN   ITEM NAME        WIDTH OUTPUT  TYPE N.DEC  ALTERNATE NAME
>    1  AREA                   4    12     F      3
>    5  PERIMETER              4    12     F      3
>    9  SMPOLY#                4     5     B      -
>   13  SMPOLY-ID              4     5     B      -
>   17  TEXT                   6     6     C      -
>   23  SYMBOL                 4     4     I      -
>   27  DESCRIPTION          125   125     C      -
>
>ITEM EXPLANATIONS:
>TEXT - geologic unit label
>SYMBOL - unique number given to map unit representing color value taken from shadeset 'color524.shd'
>DESCRIPTION - brief geologic explanations of map units
>
>TEXT    SYMBOL  DESCRIPTION
>JXma	259	Marble (Jurassic? to Lower Proterozoic?)
>JXqz	205	Quartzite (Jurassic? to Lower Proterozoic?)
>KXgb	66	Granite of Cerro Noroeste and biotite gneiss, undivided (Cretaceous and lower Proterozoic)
>KXmg	504	Migmatitic biotite gneiss (Cretaceous? and Lower Proterozoic)
>Kgbx	483	Green silicified sedimentary rocks (Cretaceous?)
>Kgd	171	Quartz diorite and granodiorite (Cretaceous)
>Kgdg	98	Granodiorite gneiss (Cretaceous?)
>Kgp	79	Granite of Mt. Pinos (Cretaceous)
>Kgpb	76	Border phase (Cretaceous)
>Kgr	146	Granitic rocks (Cretaceous)
>Kgrn	135	Granite of Cerro Noroeste (Cretaceous)
>Kgro	62	Orange granite (Cretaceous)
>MzPzhf	75	Hornfels (Jurassic, Triassic and/or late Paleozoic)
>MzPzmg	287	Gray marble (Jurassic, Triassic and/or late Paleozoic)
>MzPzms	67	Meta-sandstone (Jurassic, Triassic and/or late Paleozoic)
>MzPzmw	307	White marble (Jurassic, Triassic and/or late Paleozoic)
>MzPzqz	356	Quartzite (Jurassic, Triassic and/or late Paleozoic)
>QTgo	450	Fault gouge (Holocene to Miocene)
>Qa	3	Alluvium (Holocene)
>Qac	7	Alluvium and colluvium (Holocene)
>Qae	52	Alluvium of San Emigdio Mesa (middle Pleistocene)
>Qc	18	Colluvium (Holocene)
>Qd	24	Diamicton (middle? Pleistocene)
>Qf1	486	Younger fan deposit (Holocene)
>Qf2	485	Older fan deposits (Holocene and upper Pleistocene)
>Qf3	490	Highly dissected fan deposits (middle? Pleistocene)
>Qls	32	Landslide deposits (Holocene and/or upper Pleistocene)
>Qlsr	33	Recent landslide deposit (Holocene)
>Qw	452	Wetland deposits (Holocene)
>TKmbx	479	Mylonite breccia (lower Tertiary to Cretaceous?)
>Tca	156	Arkosic member of Caliente Formation (Miocene)
>Tcc	131	Volcanic-clast conglomerate member of Caliente Formation (Miocene)
>Tcg	97	Granite-clast conglomerate member of Caliente Formation (Miocene)
>Tcp	163	Sedimentary breccia and sandstone of Cowhead Potrero (Miocene)
>Tcr	129	Red sandstone and siltstone member of Caliente Formation (Miocene)
>Tcu	147	Upper Caliente Formation, undifferentiated (Miocene)
>Tcw	131	White sandstone and conglomerate member of Caliente Formation (Miocene)
>Tlc	143	Lockwood Clay (Pliocene?)
>Tm	386	Morales Formation (Pliocene)
>Tmsh	399	Marine shale (lower Eocene)
>Tmy	341	Abel Mountain mylonite (Paleocene?)
>Tpb	191	Granite-and gneiss-breccia facies of Plush Ranch Formation (lower Miocene and upper Oligocene)
>Tpba	154	Basalt member of Plush Ranch Formation (lower Miocene and upper Oligocene)
>Tpbn	214	Gneiss-breccia facies of Plush Ranch Formation (lower Miocene and upper Oligocene)
>Tpbx	202	Granite megabreccia member of Plush Ranch Formation (lower Miocene and upper Oligocene)
>Tpl	231	Lacustrine member of Plush Ranch Formation (lower Miocene and upper Oligocene)
>Tps	227	Pelona Schist (Paleocene)
>Tqb	326	Brown member of Quatal Formation (Pliocene)
>Tqw	295	White arkosic sandstone member of Quatal Formation (Pliocene)
>Ts	136	Simmler Formation (lower Miocene to upper Eocene)
>Tt	84	Temblor Formation (middle? Miocene)
>Twa	123	White arkosic sandstone and conglomerate (Miocene?)
>Xag	92	Biotite augen gneiss (Lower Proterozoic)
>Xbg	93	Biotite gneiss (Lower Proterozoic)
>Xbhg	71	Biotite-hornblende gneiss (Lower Proterozoic)
>
>SMPOLY.AAT:<
>
>COLUMN   ITEM NAME        WIDTH OUTPUT  TYPE N.DEC  ALTERNATE NAME
>    1  FNODE#                 4     5     B      -
>    5  TNODE#                 4     5     B      -
>    9  LPOLY#                 4     5     B      -
>   13  RPOLY#                 4     5     B      -
>   17  LENGTH                 4    12     F      3
>   21  SMPOLY#                4     5     B      -
>   25  SMPOLY-ID              4     5     B      -
>   29  DESCRIPTION           80    80     C      -
>  109  SYMBOL                 5     5     I      -
>
>ITEM EXPLANATIONS:
>SYMBOL - unique number given to line feature representing values taken from lineset 'geol_sfo.lin'
>DESCRIPTION - description of line features, using digital cartographic standards
>
>SYMBOL  DESCRIPTION
>1	contact-certain
>2	contact-approximately located
>173	contact-certain
>216	fault-approximately located
>227	map boundary
>
>SMLINE.AAT:<
>
>COLUMN   ITEM NAME        WIDTH OUTPUT  TYPE N.DEC  ALTERNATE NAME     INDEXED?
>    1  FNODE#                 4     5     B      -                        -
>    5  TNODE#                 4     5     B      -                        -
>    9  LPOLY#                 4     5     B      -                        -
>   13  RPOLY#                 4     5     B      -                        -
>   17  LENGTH                 4    12     F      3                        -
>   21  SMLINE#                4     5     B      -                        -
>   25  SMLINE-ID              4     5     B      -                        -
>   29  DESCRIPTION           80    80     C      -                        -
>
>ITEMS EXPLANATIONS:
>DESCRIPTION - description of line features, using digital cartographic standard
>
>DESCRIPTION
>anticline-certain
>anticline-concealed
>contact-concealed
>cross section
>fault-concealed
>landslide scarp-certain
>normal fault-concealed
>normal fault-concealed, queried
>reverse fault-concealed
>syncline-certain
>syncline-concealed
>thrust fault-concealed
>
>SMPOINT.PAT:<
>
>COLUMN   ITEM NAME        WIDTH OUTPUT  TYPE N.DEC  ALTERNATE NAME     INDEXED?
>    1  AREA                   4    12     F      3                        -
>    5  PERIMETER              4    12     F      3                        -
>    9  SMPOINT#               4     5     B      -                        -
>   13  SMPOINT-ID             4     5     B      -                        -
>   17  DESCRIPTION           80    80     C      -                        -
>   97  ROTATION               7     7     I      -                        -
>  104  INCLINATION            5     5     I      -                        -
>
>ITEM EXPLANATIONS:
>DESCRIPTION - description of point features,  using digital cartographic standard
>ROTATION - compass direction of bedding trend, in degrees
>INCLINATION - angle of bedding dip, in degrees from horizontal
>
>DESCRIPTION
>anticline symbol
>ball & bar symbol
>dip tic symbol
>fault dip symbol
>fold plunge arrow symbol
>horizontal bedding
>inclined bedding-showing approximate strike and dip
>inclined bedding-showing strike and dip
>inclined bedding-showing strike and dip, top direction of beds known
>inclined foliation-showing approximate strike and dip
>inclined foliation-showing strike and dip
>lineation-showing bearing and plunge
>overturned anticline symbol
>overturned bedding-showing strike and dip
>overturned bedding-showing strike and dip, top direction of beds known
>sample locations
>syncline symbol
>vertical bedding-showing strike
>vertical bedding-showing strike, top of beds known
>vertical foliation-showing strike
>
>ROTATION
>range of values: 0 - 359
>
>INCLINATION
>range of values: 0 - 90

http://pubs.usgs.gov/of/2002/ofr-02-406/ofr-02-406_pamphlet.pdf