Seismotectonic maps in the vicinity of the lower Wabash Valley, Illinois, Indiana, and Kentucky - Digital Spatial Database: Strong Motion Program station locations

Online link	https://geo-nsdi.er.usgs.gov/metadata/open-file/97-681/strngmo.faq.html
Description	This cover contains locations of strong motion accelerograph instruments located in the lower Wabash Valley. The instruments are operated by Lamont-Doherty Geological Observatory, the University of Kentucky, and the U.S. Army Corps of Engineers Strong Mot
Originators	Rhea, Susan
Publication	U.S. Geological Survey Open-File Report 97-0681

States or counties

Ballard, Caldwell, Calloway, Carlisle, Christian, Clay, Crittenden, Daviess, Daviess, Dubois, Edwards, Franklin, Fulton, Gallatin, Gibson, Graves, Hamilton, Hardin, Henderson, Hickman, Hopkins, Jefferson, Johnson, Knox, Lawrence, Livingston, Logan, Lyon, Marion, Marshall, Massac, McCracken, McLean, Montgomery, Muhlenberg, Ohio, Pike, Pope, Posey, Pulaski, Richland, Robertson, Saline, Spencer, Stewart, Todd, Trigg, Union, Vanderburgh, Wabash, Warrick, Wayne, Webster, White, Williamson

EMTARCS.AAT

Linear geological eastern Montana

Label	Definition
`ARC_TYPE`	Short name for line type
`LTYPE`	Line type
`MODIFIER`	Type of contact, fault, fold or other
`ACCURACY`	Positional accuracy
`FAULT_CONT`	Denotes that arc is both a fault and contact
`LINE_DESCRIP`	LTYPE, MODIFIER, and ACCURACE combined and one attribute

EMTGEOL.PAT

Geology of eastern Montana

Label	Definition
`FORMATION`	Map unit symbol. This field provides a relational key to the associated table wmtgeol.tbl or emtgeol.tbl (these two tables are identical) which provides additional information about each formation.

EMTGEOL.AAT

Linear geologic features

Label	Definition
`ARC_TYPE`	Short name for line type
`LTYPE`	Line type
`MODIFIER`	Type of contact, fault, fold or other
`ACCURACY`	Positional accuracy
`FAULT_CONT`	Denotes that arc is both a fault and contact
`LINE_DESCRIP`	LTYPE, MODIFIER, and ACCURACY combined as one attribute

EMTGEOL.PAT

Geology of eastern Montana at specific locations (same attributes as polygon coverage EMTGEOL.PAT)

Label	Definition

WMTARCS.AAT

Linear geologic features of western Montana (same attributes as arc coverage EMTARCS.AAT with the additional attributes below)

Label	Definition
`ARC_TYPE`	Short name for line type
`LTYPE`	Line type
`MODIFIER`	Type of contact, fault, fold or other (same attributes as EMTARCS.AAT with the additional attributes below)
`ACCURACY`	Positional accuracy (same attributes as arc coverage EMTARCS.AAT)
`LINE_DESCRIP`	LTYPE, MODIFIER, and ACCURACY combined as one attribute

WMTGEOL.PAT

Geology of western Montana

Label	Definition
`FORMATION`	Geolgic formation (no descriptions of map units found)

WMTGEOL.AAT

Linear geologic features of western Montana (same attributes as arc coverage EMTGEOL.AAT)

Label	Definition

WMTGEOL.PAT

Geology of western Montana at specific locations (same attributes as polygon coverage WMTGEOL.PAT)

Label	Definition

wmtgeol.tbl or emtgeol.tbl

This is a lookup table providing specific information about each geologic unit. The FORMATION field can be used to join this table with the polygon attribute tables of the wmtgeol and emtgeol coverages.

Label	Definition
`FORMATION`	The map unit symbol used on the published map. This is the item that is related to the map coverage. This is not necessary a formation in the normal usage. It is a map unit. (String of width 11)
`UNIT_NAME`	The map unit name from the map explanation. (String of width 75)
`ROCK_TYPE`	The general rock category from the map explanation. Generally this is something like sedimentary, igneous, or metamorphic. (String of width 50)
`ERA`	Geologic era from the map explanation. (String of width 24)
`SYSTEM`	Geologic system from the map explanation (String of width 24)
`SERIES`	Geologic age information from the map explanation. (String of width 24)
`LITH1, LITH2, LITH3, LITH4, LITH5, LITH6, LITH7, LITH8`	Lithology from the map explanation. LITH1 is the first-described lithology, LITH2 the second, and so on to LITH8. (String of width 40)
`LOCATION1, LOCATION2`	Notes on location of this particular map unit within the state. Some state maps have differing lithologic descriptions for a single geologic unit in different geographic portions of the state. (String of width 60)
`COMMENTS`	Other information from the map explanation. (String of width 70)
`MTCARB`	Summary field used for symbolizing derivative maps. (String of width 3)
`MTK`	Summary field used for symbolizing derivative maps. (String of width 3)
`MTBASE`	Summary field used for symbolizing derivative maps. (String of width 3)
`MTFAM`	Summary field used for symbolizing derivative maps. (String of width 3)
`MTPHOS`	Summary field used for symbolizing derivative maps. (String of width 3)
`MTSG`	Summary field used for symbolizing derivative maps. (String of width 4)
`MTBATHAB`	Summary field used for symbolizing derivative maps. (String of width 10)
`LITHA`	Standardized lithologic description (some abbreviations) (String of width 20)
`LITH_FORM`	General geologic structure. (String of width 20)
`LITH_MAJOR`	Major lithology, expressed using combinations of standardized lithologic terms. (String of width 120)
`LITH_MINOR`	Minor lithology, expressed using combinations of standardized lithologic terms. (String of width 200)
`LITHOLOGY`	Lithology, expressed using combinations of standardized lithologic terms. (String of width 254)
`AGE`	Text combined from Era, System, and Series fields. (String of width 72)
`MTLITH`	Abbreviated lithology used for symbolization. (String of width 40)