Oca-Ancón Fault System
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The Oca-Ancón Fault System (Spanish: Falla Oca-Ancón) is a complex of geological faults located in northeastern Colombia and northwestern Venezuela near the Caribbean Sea. The fault system is of right-lateral strike-slip type and extends for an approximate length of 830 km (520 mi).[1][2][3] The Oca-Ancón Fault System is part of the diffuse boundary between the Caribbean Plate and the South American Plate.[4] The movement rate of the Oca-Ancón Fault System is estimated at 2 millimetres (0.079 in) each year, more than most Venezuelan faults.[2]
Quick Facts Location, Coordinates ...
Oca-Ancón Fault | |
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Falla Oca-Ancón | |
Location | Northern South America |
Coordinates | 11°00′N 71°45′W |
Country | Colombia Venezuela |
Region | Caribbean |
State | La Guajira Falcón, Zulia |
Cities | Maracaibo |
Characteristics | |
Range | Sierra Nevada de Santa Marta, Serranía del Perijá, Venezuelan Coastal Range |
Part of | Andean faults |
Segments | Oca, Ancón |
Length | 830 km (520 mi) |
Strike | 275 ± 7 (W-E) |
Dip angle | Vertical to subvertical |
Displacement | 0.2–2 mm (0.0079–0.0787 in)/yr |
Tectonics | |
Plate | South American |
Status | Active |
Earthquakes | 1834 |
Type | Strike-slip fault |
Movement | Dextral |
Age | Late Pleistocene-Holocene |
Orogeny | Andean |
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