Neotectonic map of Venezuela and neighboring areas at scale 1:2,000,000
- Venezuelan Foundation for Seismological Research (FUNVISIS), Caracas (Venezuela)
An updated neotectonic map of Venezuela is presented, synthetizing works carried out by the FUNVISIS Earth Science Workgroup since 1979 and which includes the northeastern Colombian region and Trinidad island. The map shows a main deformation belt, some 40 to 100 km wide, with the most important evidences of quaternary activity and considered as the boundary between South America and Caribbean plates. Two secondary belts defining the borders of the Maracaibo Block are outlined as well. In the main belt, the major features are represented by the inter-connected strike-slip fault systems of Bocono-San Sebastian-El Pilar-Los Bajos-El Soldado. Important tectonic complications can be observed along this belt, like the [open quotes]Pamplona indenter[close quotes] associated structures that connects to the frontal fault system of the Colombian Eastern Range in the western end, and in the eastern end the high compressive zone of Trinidad that constitutes a transition between the strike-slip fault system and the subduction zone of the lesser Antilles. In addition, oblique secondary systems can be seen at both sides of the principal deformation axis without crossing it. Two other important secondary systems, the Santa Marta-Bucaramanga and the Oca-Ancon faults, and the main fault of Bocono define the Block of Maracaibo, which is characterized by important internal deformations.
- OSTI ID:
- 5975663
- Report Number(s):
- CONF-930306-; CODEN: AABUD2
- Journal Information:
- AAPG Bulletin (American Association of Petroleum Geologists); (United States), Vol. 77:2; Conference: International congress of the American Association of Petroleum Geologists (AAPG), Caracas (Venezuela), 14-17 Mar 1993; ISSN 0149-1423
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
GEOLOGIC FAULTS
CONFIGURATION
GEOLOGIC STRUCTURES
DEFORMATION
PLATE TECTONICS
MAPPING
VENEZUELA
MAPS
COLOMBIA
DISTANCE
GEOLOGIC STRATA
LESSER ANTILLES
SLIP
SOUTH AMERICA
TECTONICS
WIDTH
DEVELOPING COUNTRIES
DIMENSIONS
GEOLOGIC FRACTURES
ISLANDS
LATIN AMERICA
WEST INDIES
580000* - Geosciences