Structural interpretation along the Icotea Fault, Lake Maracaibo, Venezuela

Conference · Mon Feb 01 00:00:00 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-; 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

Related Subjects

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