Structural interpretation along the Icotea Fault, Lake Maracaibo, Venezuela

Conference · Sun Jan 31 23:00:00 EST 1993 · AAPG Bulletin (American Association of Petroleum Geologists); (United States)

OSTI ID:6103160

Bueno, E; Zubizarreta, J; Pinto, J; Taylor, C; Prieto, E ^[1]

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1. Maraven, S.A., Caracus (Venezuela)

This structural interpretation, performed on an interactive workstation, corresponds to an area covered by three 3D seismic surveys in Lake Maracaibo. These surveys (Block I, Northern and Southern Lama) focus on the Icotea fault trend, which is one of the major structural features in the Maracaibo Basin. The present study is centered on the interpretation of the origin and evolution of this fault trend. The Maracaibo Basin evolved from an initial phase dominated by extensional tectonism to a later compressional phase. The Icotea fault is interpreted as the border of a Triassic-Jurassic half graben. Subsequent to the deposition of shelf sediments, the fault became reactivated during the Paleocene and Lower to Middle Eocene. During the change to compressional tectonics within the upper Eocene, the half graben became inverted. As an associated event during the structural inversion, a sinistral strike slip deformation took place along the fault. The latest stage of faulting developed during Miocene, and resulted in lateral offsets along the Icotea fault system.

• OSTI ID: 6103160
• Report Number(s): CONF-930306--
• Journal Information: AAPG Bulletin (American Association of Petroleum Geologists); (United States), Journal Name: AAPG Bulletin (American Association of Petroleum Geologists); (United States) Vol. 77:2; ISSN 0149-1423; ISSN AABUD2
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020200* -- Petroleum-- Reserves
Geology
& Exploration
58 GEOSCIENCES
580000 -- Geosciences
CONTINENTAL CRUST
DEFORMATION
DEVELOPING COUNTRIES
EARTH CRUST
GEOLOGIC AGES
GEOLOGIC FAULTS
GEOLOGIC FRACTURES
GEOLOGIC STRUCTURES
GEOPHYSICAL SURVEYS
JURASSIC PERIOD
LATIN AMERICA
MESOZOIC ERA
ORIGIN
SEDIMENTARY BASINS
SEDIMENTATION
SEISMIC SURVEYS
SLIP
SOUTH AMERICA
SURVEYS
TECTONICS
TRIASSIC PERIOD
VENEZUELA