| Online link | https://geo-nsdi.er.usgs.gov/metadata/open-file/00-222/metadata.faq.html |
|---|---|
| Description | This geologic map database for the El Mirage Lake area describes geologic materials for the dry lake, parts of the adjacent Shadow Mountains and Adobe Mountain, and much of the piedmont extending south from the lake upward toward the San Gabriel Mountains |
| Originators | Miller, David M. and Bedford, David R. |
| Publication | U.S. Geological Survey Open-File Report 00-222 |
The data are supplied in ARC/INFO export format and ArcView shapefiles. >Dataset consists of three main (map) coverages: >rp_geol >rp_line >rp_pnt > ><RP_GEOL.PAT> > >COLUMN ITEM NAME WIDTH OUTPUT TYPE N.DEC ALTERNATE NAME INDEXED? >1 AREA 8 18 F 5 - >9 PERIMETER 8 18 F 5 - >17 RP_GEOL# 4 5 B - - >21 RP_GEOL-ID 4 5 B - - >25 DESCRIPTION 80 80 C - - >105 LABEL 8 8 C - - >113 SYMBOL 3 3 I - - > >LABEL SYMBOL DESCRIPTION >Qac 5 Alluvial and colluvial deposits (Holocene) >Qal 3 Alluvial deposits (Holocene) >Qcc 10 Cinder deposit of Cat Hills cones (Pleistocene) >Qch1 87 Lava flow 1 of Cat Hills (upper Pleistocene) >Qch2 85 Lava flow 2 of Cat Hills (upper Pleistocene) >Qch3 42 Lava flow 3 of Cat Hills (upper Pleistocene) >Qch4 41 Lava flow 4 of Cat Hills (upper Pleistocene) >Qch5 17 Lava flow 5 Cat Hills (upper Pleistocene) >Qch6 15 Lava flow 6 of Cat Hills (upper Pleistocene) >Qch7 13 Lava flow 7 of Cat Hills (upper Pleistocene) >Qe 82 Eolian sand deposits (Holocene and upper Pleistocene) >Qe/Qac 80 Eolian sand veneer on alluvial and colluvial deposits > (Holocene and upper Pleistocene) >Qe/Qsc 225 Eolian sand veneer on sand, silt, and clay unit of > Chavez Grant (Holocene to lower Pleistocene) >Qe/Tscl 219 Eolian sand veneer on the lower sand and gravel of the > Ceja Formation (Holocene to Pliocene) >Qe/Tscu 81 Eolian sand veneer on soils of the upper sand and > gravel unit of the Ceja Formation (Holocene to upper > Pliocene) >Qec 38 Eolian and colluvial deposits (Holocene and upper > Pleistocene) >-- 267 Calcic soils 1 (Pleistocene) >-- 172 Calcic soils 2 (Pleistocene) >Qls 51 Landslide deposits (Holocene to middle Pleistocene) >Qrc 60 Present channel and tributary deposits (Holocene) >Qrp 147 Fluvial deposits of the ancestral Rio Puerco (upper > Pleistocene) >Qrt1 7 Old terrace deposits (Holocene) >Qrt2 9 Intermediate terrace deposits (Holocene) >Qrt3 11 Young terrace deposits (Holocene) >Qsc 223 Sand, silt, and clay unit of Chavez Grant (lower > Pleistocene) >Tcm 86 Lava flow of Cat Mesa (upper Pliocene) >-- 78 Calcic soils underlying Llano de Albuquerque > (Pliocene-Pleistocene) >Tm 255 Diabase of Mohinas Mountain (Miocene) >Tsp 243 Popotosa Formation (Miocene and upper Oligocene) >Tscl 221 Lower sand and gravel unit of the Ceja Formation > (upper Pliocene) >Tscm 219 Middle silt, sand, and clay unit of the Ceja Formation > (upper Pliocene) >Tscm? 219 Middle silt, sand, and clay unit of the Ceja Formation > (upper Pliocene) >Tscu 62 Upper sand and gravel unit of the Ceja Formation (upper > Pliocene) >-- -- crater > ><RP_GEOL.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 8 18 F 5 - >25 RP_GEOL# 4 5 B - - >29 RP_GEOL-ID 4 5 B - - >33 DESCRIPTION 80 80 C - - >113 SYMBOL 3 3 I 0 - > >SYMBOL DESCRIPTION >1 Contact-Certain >5 Contact-Inferred, queried >51 Normal fault-Certain >54 Fault-Concealed, queried >56 Rim of volcanic crater--Certain >216 Fault-Approximately located >227 Map boundary >313 Normal fault-Concealed, queried > ><RP_LINE.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 8 18 F 5 - >25 RP_LINE# 4 5 B - - >29 RP_LINE-ID 4 5 B - - >33 DESCRIPTION 80 80 C - - >113 SYMBOL 3 3 I 0 - > >SYMBOL DESCRIPTION >134 Fault-Located by aeromagnetic survey >175 Fault-Concealed, queried >176 Fault-Concealed >186 Normal fault-Concealed >314 Normal fault-Concealed, queried > ><RP_PNT.PAT> > >COLUMN ITEM NAME WIDTH OUTPUT TYPE N.DEC ALTERNATE NAME INDEXED? >1 AREA 8 18 F 5 - >9 PERIMETER 8 18 F 5 - >17 RP_PNT# 4 5 B - - >21 RP_PNT-ID 4 5 B - - >25 AZIMUTH 7 7 I - ROTATION - >32 DIP 3 3 I - INCLINATION - >35 DESCRIPTION 80 80 C - - >115 AGE 20 20 C - - >135 SYMBOL 3 3 I 0 - > >SYMBOL DESCRIPTION >1 Horizontal bedding >2 Inclined bedding - Showing strike and dip >232 Age determination sample location > >AZIMUTH >Compass direction of fault plane trend, in degrees >Range of values: 0-359 > >DIP >Angle of fault plane inclination, in degrees from horizontal >Range of values: 0-90 > >AGE >Age of sample location
http://pubs.usgs.gov/mf/2003/mf-2397/mf-2397_508.pdf