| Abstract: | Interpretation of the results of aeromagnetic, total-gamma radioactivity, and gravity surveys combined with geologic data for Western Liberia from White and Leo (1969) and other geologic information allows the construction of a tectonic map of Liberia. The map approximately delineates the boundaries between the Liberian (ca. 2700 m.y.) province in the northwestern two-thirds of the country, the Eburnean (ca. 2000 m.y.) province in the south-eastern one-third, and the Pan-African (ca. 550 m.y.) province in the coastal area of the northwestern two-thirds of the country. Rock follation and tectonic structural features trend northeastward in the Liberian province, east-northeastward to north-northeastward in the Eburnean province, and northwestward in the Pan-African age province. Linear residual magnetic anomailes 20-80 km wide and 200-600 gammas in amplitude and following the northeast structural trend typical of the Liberian age province cross the entire country and extend into Sierra Leone and Ivory Coast. |
| Genre: | USGS Numbered Series |
| ProdID: | 12634 |
| Citation Author: | Behrendt, John Charles; Wotorson, Cletus S. |
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| Citation Language: | ENGLISH |
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| Citation Phsyical Description: | iii, 78 p. :ill., maps ;27 cm. |
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| Citation Publisher: | U.S. Geological Survey, |
| Citation Series: | Open-File Report |
| Citation Series Code: | OFR |
| Citation Series Number: | 72-32 |
| Citation Search Results Text: | Tectonic map of Liberia based on geophysical and geological surveys; 1972; OFR; 72-32; Behrendt, John Charles; Wotorson, Cletus S. |
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| Citation Year: | 1972 |
| Type: | citation/reference |
| Text: | Tectonic map of Liberia based on geophysical and geological surveys; 1972; OFR; 72-32; Behrendt, John Charles; Wotorson, Cletus S. |
| URL (THUMBNAIL): | http://pubs.usgs.gov/of/1972/0032/report-thumb.jpg |
| URL (DOCUMENT): | http://pubs.usgs.gov/of/1972/0032/report.pdf |
| URL (PLATE): | http://pubs.usgs.gov/of/1972/0032/plate-1.pdf |
| URL (PLATE): | http://pubs.usgs.gov/of/1972/0032/plate-2.pdf |
| URL (PLATE): | http://pubs.usgs.gov/of/1972/0032/plate-3.pdf |
| URL (PLATE): | http://pubs.usgs.gov/of/1972/0032/plate-4.pdf |
| URL (PLATE): | http://pubs.usgs.gov/of/1972/0032/plate-5.pdf |
| URL (PLATE): | http://pubs.usgs.gov/of/1972/0032/plate-6.pdf |
| URL (PLATE): | http://pubs.usgs.gov/of/1972/0032/plate-7.pdf |
| Date Other: | Sat, 1 Jan 1994 00:00 -0600 |
| Publisher: | U.S. Geological Survey, |
