Preliminary observations on Quaternary reverse faulting along the southern front of the Northern Range of Trinidad

Conference · Mon Feb 01 00:00:00 EST 1993 · AAPG Bulletin (American Association of Petroleum Geologists); (United States)

OSTI ID:6103184

Beltran, C ^[1]

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1. Venezuelan Foundation for Seismological Research (FUNVISIS), Caracus (Venezuela)

Several geomorphological evidences of Quaternary reverse faulting are observed along the southern front of the Northern Range in Trinidad between Port-of-Spain and Matura Point. Such a mountain front is associated to a reverse fault system showing an imbricated pattern southward. In the north, the system is limited by a structural feature showing an important vertical component. Southward this system progressively changes to low angle faults. This geometry is corroborated by seismic profiling in the continent shelf. The active faulting evidences consist in lateral drainage offsets, fault trenches, sag-ponds, triangular facets, and saddles. Some quaternary terraces show fault scarps and tilting. We postulate that these reverse fault systems as Arima Fault instead of El Pilar fault as it is not actually connected to the San Sebestian-El Pilar right-lateral slip system, due to the southward prolongation of the southern limit of the Caribbean Plate through the fault system of Los Bajos-El Soldado.

• OSTI ID: 6103184
• 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
ACTIVITY LEVELS
MOUNTAINS
GEOMORPHOLOGY
TRINIDAD AND TOBAGO
CARIBBEAN SEA
CONFIGURATION
GEOLOGIC STRUCTURES
PLATE TECTONICS
QUATERNARY PERIOD
SEISMIC SURVEYS
ATLANTIC OCEAN
CENOZOIC ERA
GEOLOGIC AGES
GEOLOGIC FRACTURES
GEOLOGY
GEOPHYSICAL SURVEYS
ISLANDS
LESSER ANTILLES
SEAS
SURFACE WATERS
SURVEYS
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020200* - Petroleum- Reserves
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580000 - Geosciences