Seismotectonic maps in the vicintiy of New Madrid, Missouri database

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