Título: Reactivation Of Mesozoic Age Structures Near La Ceiba Field, Ne. Anzoategui, Eastern Venezuelan Basin

Autor: White, S.; Sadler, P.

Fuente: Annual. AAPG-SEPM-EMD-DPA-DEG Conv., Pap Abstr P A124-A125, 1997

Lugar y fecha del Evento: Dallas, TX, United States, 4/6-9/97

Descriptores : Venezuela; Anzoategui; Eastern Venezuela Basin; Extension (Geology); Oil Field; Structural Geology Folding (Geology); Normal Fault; Normal Faulting

Año: 1997

Tipo de documento: Conferencia

Resumen: The structural style of this portion of the E. Venezuelan Basin is dominated by reverse and low angle faults and their associated folded and faulted strata. Structural development is related to inversion of Mesozoic age extensional faults during the Miocene. La Ceiba field is located at the western termination of the Tala-Pirital thrust system. Using seismic data, 3 phases of late Oligocene to Miocene age structuring have been identified. The first was extensional and involved reactivation of Mesozoic age normal faults. This resulted in both regional and local increased accommodation for late Oligocene and lower Miocene sedimentation. Second, regional inversion along the Anaco and related structures followed extension in middle to upper Miocene time. Third, breakthrough and emplacement of the Tala thrust system east of La Ceiba field took place. Oil and gas production at La Ceiba field is localized by structure that developed at the western termination of the Tala thrust. There it is recognized to be at the juncture of the northeast limit of the Anaco fault and northwest-oriented compressional splays of the Tala thrust. (Original not available from T.U.)