la guajira magnetic - anh...bogota cali medellin ibague cucuta barranquilla villavicencio...
TRANSCRIPT
BOGOTA
CALI
MEDELLIN
IBAGUE
CUCUTA
BARRANQUILLA
VILLAVICENCIO
BUCARAMANGA
META
VICHADA
AMAZONAS
CAQUETA
GUAINIA
VAUPES
CHOCO
ANTIOQUIA
GUAVIARE
CAUCA
NARINO
CASANARE
VALLE
CESAR
TOLIMA
HUILA
BOLIVAR
ARAUCA
BOYACA
SANTANDER
CORDOBA
PUTUMAYO
MAGDALENA
LA GUAJIRA
SUCRE
CUNDINAMARCA
NORTE DE SANTANDER
CALDAS
RISARALDA
ATLANTICO
QUINDIO
BOGOTA
BOLIVARBOLIVAR
0
-50
50
-100
-150
100
150
-200
-250
200
-300
150
0
-100
0
100
-50
-50
50
0
50
-100
0
150
-100
100
100
0
0
50
50
100
0
0
0
0
150
-50
-50
-100
50
0
0
-50
0
50
50
0
0
-50
0
0
100
50
0
-100
0
-50
50
50
50
100
-50
0
-100
0
100
-50
0
-50
-50
0
100
0
50
50
-50
0
50
100
50
50
-50
0
0
0
0
100
-100
100
0
100
50
50100
100
-50
-50
0
50
50
50
50
50
-50
-150
-50
-50
50
-100
-50
0
-50
-50
-50
50
0-50
0
100
-50
50
-100
0
50
0
0
0
100
-100
50
50
50
50
0
-100
0
-50
0
0
50
-50
50
-50
0
-100
-100
0
-50
0
-50
50
-50
100
50
100
0
0
-150
0
0
50
0
0
0
100
50
0
-50
50
50
150
50
0
0
0
-150
0
50
-100
0
0
0
-50
50
0
0
50
50
50
50
50
50
0
-100
0
50
-100
100
100
-50
0
50
-50
50
-50
0
100
50
50 0
-50
-50150
0
150
100
100
50
50
100
-50
-150
-100
100
-50
50
50
0
0
50
50
-100
50
0
0
-50
50
-50
50
50
50
-100
0
-50
-50
0
0
0
0
-100
-100
-100
50
100
0
-50
0
-100
50
100
50
0
150
0
-50
100
-50
0
-50
00
50
-50 0
-150
0
50
0
-100
-50
50
0
50
100
100
50
-50
150
-50
50
100
0
50
50
-100
0
0
0
-100
0
-150
100
0
0
50
0
0
-50
-50
0
-50
-50
-100
0
0
0
-50
50
-50
-100
0
0
50
-50
-50
50
0
50
100
68°W
68°W
70°W
70°W
72°W
72°W
74°W
74°W
76°W
76°W
78°W
78°W
12°N
12°N
10°N
10°N
8°N 8°N
6°N 6°N
4°N 4°N
2°N 2°N
0° 0°
2°S 2°S
4°S 4°S
MAGNETICTOTAL INTENSITYANOMALIES MAPFOR COLOMBIA
ECUADOR
BRAZIL
PANAMA
PACIFIC OCEAN
CARIBBEAN SEA
SCALE 1 : 2'000.000MAGNA-SIRGAS DATUM
LEGENDContour Interval (50 nT)Marine International BoundaryDepartment BoundaryCityInternational Boundary
0 50 100 150 20025Km
±
LOCATION MAP
PHYSICAL MAP
PERU
Colombia airborne magnetic data correspond to prospectingprograms hold by ANH and other O&G companies that makeexploration in different areas of the country. Currently all this information is available in EPIS (Ex-ploration and Production Information Service) databaseData have been normalized to 1000 m of altitude, they were corrected by diurnal variations and reduced bythe International Geomagnetic Reference Field (IGRF). Anomalies change between +104 nT and -114 nT.
Done by: Geologist Carlos Rey (ANH) Professor Luis A. Briceño (ANH) Geophysicist John Cerón (ECOPETROL) Professor Carlos A. Vargas (ANH - Universidad Nacional de Colombia)Bogota, January 2008
visit: www.anh.gov.co
VENEZUELA
nT
Dr ARMANDO ZAMORA, Director General