USGS Data Series 352: Arkansas and Louisiana Aeromagnetic and Gravity Maps and Data

Table 1. Arkansas and Louisiana aeromagnetic compilation index.

Survey no.¹	Survey type²	Survey name³	Flown by⁴	Date flown	Spacing⁵ (mi)	Direction⁵	Altitude⁶ (ft)	Datum⁷	Publication⁸
16	M–Dz	Newport	U.S. Geological Survey	04/50–05/50	0.25– 0.5	N–S	1,000 AG	Total field, arbitrary datum	GP–370, Jesperson, 1964
1021	M–Dz	New Madrid '73	U.S. Geological Survey	05/73–06/73	1	E–W	1,000 B	Total field, arbitrary datum	OFR 74-360, U.S. Geological Survey, 1974
1129	M–D	Harrison	U.S. Geological Survey	04/87–05/87	0.46	N–S	500 AG	DIGRF	MF–1994–B, McCafferty and others, 1989
2223	M–Dzg	New Madrid '75 (Jonesboro)	U.S. Geological Survey	02/75–03/75	1	E–W	1,000 B	Total field, arbitrary datum	OFR 76–318, U.S. Geological Survey,1976
6039	M/R–D	Central Lowlands (Tulsa)	Texas Instruments, Inc.	07/77–10/77	3	E–W	400 AG	IGRF?	GJBX–100(78), Texas Instruments, 1978
6066	M/R–D	Little Rock	GeoLife, Inc.	02/78–03/78	3	N–S	400 AG	IGRF65	GJBX–115(79) GeoLife, Inc., 1979a
6067	M/R–D	McAlester	GeoLife, Inc.	03/78	6	N–S	400 AG	IGRF65	GJBX–174(79) GeoLife, Inc., 1979b
6144	M/R–D	Texarkana and Tyler	EG&G GeoMetrics, Inc.	10/79–11/79	3	N–S, E–W	400 AG	IGRF75	GJBX–069(80), EG&G GeoMetrics, Inc., 1980a
6162	M/R–D	Springfield–Harrison	EG&G GeoMetrics, Inc.	04/80–05/80	6	E–W	400 AG	IGRF75	GJBX–150(80), EG&G GeoMetrics, Inc., 1980b
6164	M/R–D	South-central United States (Alexandria, Blytheville, El Dorado, Fort Smith, Greenwood, Jackson, Nachez, Russellville, Shreveport)	EG&G GeoMetrics, Inc.	05/80–07/80	6	E–W	400 AG	IGRF75	GJBX–151(80), EG&G GeoMetrics, Inc., 1980h Also by GeoMetrics, Inc.: GJBX–152(80), 1980i GJBX–153(80), 1980j GJBX–180(80), 1980k GJBX–182(80), 1980c GJBX–183(80), 1980d GJBX–200(80), 1980e GJBX–204(80), 1980f GJBX–205(80), 1980g
6180	M/R–D	Gulf Coast (Baton Rouge, Breton Sound, Lake Charles, Mobile, New Orleans, Port Arthur)	EG&G GeoMetrics, Inc.	08/80–09/80	6	E–W	400 AG	IGRF75	GJBX–221(80), EG&G GeoMetrics, Inc., 1980l Also by GeoMetrics, Inc.: GJBX–222(80), 1980m GJBX–223(80), 1980n GJBX–224(80), 1980o
AR01	M–Dz	West-central Arkansas	Aero Service Corp.	?/67	0.5	E–W	500 AG	?	Aero Services Corp., 1967
AR02	M–Dzg	Northeast Arkansas	Applied Geophysical Corp.	05/77–06/77	1	E–W	2,000 B	IGRF75	OFR 79–1208, Hendrix and Hildenbrand, 1979
AR03	M–Dg	East-central Arkansas (proprietary data)	Kansas Geological Survey	?/80	1	E–W	1,000– 2,000 B	IGRF75	OFR 81–758, Hildenbrand, Hendrix, and Kucks, 1981

¹Survey no.: Internal U.S. Geological Survey identification number.
²Survey type: D, digital data; Dg, digital data—grid only; Dz, digitized data, Dzg, digitized data—grid only; M, magnetics; R, radiometrics.
³Survey name: Internal project name (may not be name used in publication title).
⁴Flown by: Company or government agency that flew the original survey.
⁵Spacing and Dir: Primary flight-line spacing and primary flight-line direction.
⁶Altitude: Primary flight altitude. AG, above ground and draped over topography; B, barometric elevation.
⁷Datum: Original magnetic reference field datum used by contractor. Indicates if a regional field was removed and, if it could be determined, the base value removed. Total field, no regional field was removed; arbitrary datum, base value removed was not stated on the map. DIGRF, definitive geomagnetic reference field; IGRFxx, international geomagnetic reference field for the model year 19xx; ?, unknown.
⁸Publication: Brief publication reference. U.S. Geological Survey publications: GP, Geophysical Investigation Maps; MF, Miscellaneous Field Investigations Maps;
OFR yy–xxx where yy is the publication year, Open-File Reports. Other publications: AR, Arkansas State; GJBX, Department of Energy, National Uranium Resource Evaluation (NURE) reports.