Seismotectonic maps in the vicinity of the lower Wabash Valley, Illinois, Indiana, and Kentucky - Digital Spatial Database: Paleoliquefaction surveys in 1995 in Illinois

Online link https://geo-nsdi.er.usgs.gov/metadata/open-file/97-681/liq95surv.faq.html
Description Over several summer field seasons from 1990 through 1994, several workers searched ditches and river banks for evidence of prehistoric earthquake liquefaction. They found numerous banks with shaking-induced sandblows and the dikes that fed them. "liq94sur
Originators Rhea, Susan
Publication U.S. Geological Survey Open-File Report 97-0681

Related topics

States or counties

Overview of attributes

>ARC/INFO coverage  Description of coverage
>
>2x2grat    graticule for the map
>2x2grattic point cover of all the  .1250 interval tics in the 2x2grat area
>axgrav     axial gravity anomaly (Langenheim, 1995)
>basehyd    selected hydrography, selected on the basis of significant ground-shaking or liquefaction potential
>bhlin_24k  Bootheel Lineament as observed on low-altitude photos and transferred to 1:24,000 scale topographic maps (Schweig and others 1992)
>bhlin_ls   Bootheel Lineament as observed on landsat images
>cities     selected cities
>cnty       state and county borders in the map area
>enrgcen    locations of probable subsurface ruptures of the 1811-12 earthquakes, as defined by sandblow distribution (Obermeier, 1989)
>epri       damaging earthquakes (moment magnitude ? 5.0) since 1811-12 as defined by EPRI (Johnston, 1994)
>eqk_slu    earthquakes located by the St. Louis University from July 1974 to December 1992, Taylor and others (1991)
>faults     locations of faults identified by geologic observation
>gpspts     locations of Global Positioning System monuments
>gravstr    structures identified from gravity-field data  (Langenheim,1995)
>gwanom     locations of ground-water anomalies (Brahana and Mesko, 1994)
>intcom     intrusive complexes defined by aeromagnetic studies (Hildenbrand and Hendricks, 1995)
>hrvpdeep   P-velocity contours for depths 5 - 14 km (Al-Shukri and Mitchell, 1987)
>hrvpshal   P-velocity contours for depths 0 - 5 km (Al-Shukri and Mitchell, 1987)
>landslide  landslides along the Chickasaw Bluffs, mapped by Jibson and Keefer (1988) at 1:62,500 scale
>magdep     depth to magnetic basement (Hildenbrand and Hendricks, 1995)
>misspoly   polygon coverage of the Mississippi River extracted from basehyd
>miscenters Fischer and Schumm's (1995) locations of historical centerlines
>misshores  Fischer and Schumm's (1995) locations of historical shorelines of the Mississippi River from 1765  to 1960
>mtstr      Reelfoot Graben structures interpreted from magnetotelluric data
>pzcon      paleozoic surface depth contours from Dart (1995)
>pzconpts   control points for defining the paleozoic surface from Dart (1995)
>pzsub      subcrop contacts on the paleozoic surface from Dart (1995)
>qd24k      polygons of the 1:24000 scale topographic maps in the area
>railrds    railroads on the 100k DLG's
>rds        class 1 and 2 roads (major 4-lane and principle 2-lane roads)
>reflstr    structures identified in seismic reflection research
>rivanom    river anomalies throughout the New Madrid region identified by Fischer and Schumm (1995)
>sblows     outlines of Obermeier's (1989) definitions of areas covered by greater than 1% and greater than 25% sandblows from the 1811-12 earthquakes
>selwell    selected wells from Dart (1992)
>sfcstr     significant structures visible at the surface in the vicinity of New Madrid
>seissta    locations of seismograph stations that have operated in the New Madrid region since July 1974
>states     arcs from cnty with bndytype = 1; see cnty for description
>stresspts  stress orientations either from borehole breakouts or earthquake focal mechanism solutions updated in Ellis (1994)
>strmot     strong motion seismometers
>trench     trenches examined for prehistoric earthquakes and a report has been published
>well       wells from Dart (1992) in the map area. See selwell for wells used in MF-2264

http://pubs.usgs.gov/of/1995/ofr-95-0574/readme.txt

2x2GRAT.AAT

graticule for the map

Label Definition
NEATCODE Location of neat line

AXGRAV.PAT

Axial gravity anomaly

Label Definition
GEO type of data

AXGRAV.PAT

Axial gravity anomaly at specific locations (same attributes as polygon coverage AXGRAV.PAT)

Label Definition

BASEHYD

Selected hydrography, selected on the basis of significant ground-shaking or liquefaction potential. (Attributes are remnants of DLG base map)

Label Definition

BHLIN_LS.AAT

Bootheel Lineament as observed on low-altitude photos and transferred to 1:24,000 scale topographic maps (Schweig and others 1992)

Label Definition
CODE type of lineament

CITIES.PAT

selected cities

Label Definition
NAME2 Name of selected cities

EPRI.PAT

damaging earthquakes (moment magnitude ? 5.0) since 1811-12 as defined by EPRI (Johnston, 1994)

Label Definition
YEAR Year the damaging earthquake occurred
MONTH Month damaging earth quake occurred
DAY Day damaging earthquake occurred
MAG Magnitude of damaging earthquake

FAULTS.AAT

Locations of faults identified by geologic observation

Label Definition
CODE plotting symbol
REF Reference for fault

GPSPTS.PAT

Locations of Global Positioning System monuments.

Label Definition
ID Identifying code
AGENCY Operator of GPS monument
HEIGHT Height (elevation) of GPS monument
DECLIN Declination of monument
GEOG_LOC Geographic location of monument
LONG Longitude of GPS monument location
LAT Latitude of GPS monument location
PLOT Plot symbol

GRAVSTR.PAT

Structures identified from gravity-field data (Langenheim, 1995)

Label Definition
GEO geological name

GRAVSTR.AAT

Structures identified from gravity-field data (Langenheim, 1995)

Label Definition
GEO Geolical name

GRAVSTR.PAT

Structures identified from gravity-field data (Langenheim, 1995) (same attributes as polygon coverage GRAVSTR.PAT)

Label Definition

HRVPSHAL.AAT

P-velocity contours for depths 0-5 km (Al-Shukri and Mitchell, 1987)

Label Definition
DEPTH Depth identifier
VELOC Velocity of P-wave

HRVPDEEP.AAT

P-velocity contours for depths 5-14 km (Al-Shukri and Mitchell, 1987)

Label Definition
DEPTH Depth identifier
VELOC Velocity of P-wave

MAGDEP.PAT

depth to magnetic basement (Hildenbrand and Hendricks, 1995)

Label Definition
DEPTH Depth to magnetic basement

MAGDEP.AAT

depth to magnetic basement (Hildenbrand and Hendricks, 1995)

Label Definition
DEPTH Depth to magnetic basement

MAGDEP.PAT

depth to magnetic basement (Hildenbrand and Hendricks, 1995) (same attributes as polygon coverage MAGDEP.PAT)

Label Definition

MAGSTR.PAT

Structures identified from magnetic-field data

Label Definition
GEO Geological structure
NAME Name of structure (if any)

MAGSTR.AAT

Structures identified from magnetic-field data

Label Definition
GEO Geological structure

MAGSTR.PAT

Structures identified from magnetic-field data (same attributes as polygon coverage MAGSTR.PAT)

Label Definition

MISCENTERS.AAT

Fischer and Schumm's (1995) locations of historical centerlines of the Mississippi River from 1765 to 1960

Label Definition
YEAR year for which location was determined

MISSHORES.AAT

Fischer and Schumm's (1995) locations of historical shorelines of the Mississippi River from 1765 to 1960

Label Definition
YEAR Year for which location was determined

MISSPOLY.AAT

polygon coverage of the Mississippi River extracted from BASEHYD.AAT (same attributes as BASEHYD.AAT)

Label Definition

MTSTR.AAT

Reelfoot Graben structures interpreted from magnetotelluric data (Stanley and Rodriguez, 1992)

Label Definition
NAME Name of structures

PZCON.AAT

paleozoic surface depth contours from Dart (1995) arc attributes

Label Definition
DEPTH Depth to paleozoic surface

PZCONPTS.PAT

Control points for defining the paleozoic surface from Dart (1995)

Label Definition
DEP Depth
X-COORD X-coordinate
Y-COORD Y-coordinate

QD24K.PAT

polygons of the 1:24000 scale topographic maps in the area

Label Definition
LONG Longtitude at center of quadrangle
LAT Latitude of center of quadrangle
NAME Qaudrangle name
STATE State the quadrangle mainly covers

QD24K.PAT

Points at the center of the 1:24000 scale topographic maps in the area (same attributes as polygon coverage QD24K.PAT)

Label Definition

RAILRDS.AAT

Railroads on the 100k DLG's (Attributes are remnants of DLG base map)

Label Definition

RIVANOM.PAT, and RIVANOM.AAT

river anomalies throughout the New Madrid region identified by Fischer and Schumm (1995)

Label Definition

SEISSTA.PAT

Locations of siesmograph stations that have operated in the New Madrid region since July 1974.

Label Definition
LONG Longitude of station
LAT Latitude of station
STA Station name
START Start date of station operating
STOP Stop date of station operating

SELWELL.PAT

Selected wells from Dart (1992) (Described in Dart (1992) and include, for example, location, owner, id, depth to various formations, and thickness of various formations)

Label Definition

STRESSPTS.PAT

stress orientations either from borehole breakouts or earthquake focal mechanism solutions updated in Ellis (1994)

Label Definition
DIR Direction of stress symbol
TYPE Type
X-COORD X-coordinate
Y-COORD Y-coordinate