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

Abstract

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.

Authors:
 [1]
  1. Venezuelan Foundation for Seismological Research (FUNVISIS), Caracus (Venezuela)
Publication Date:
OSTI Identifier:
6103184
Report Number(s):
CONF-930306-
Journal ID: ISSN 0149-1423; CODEN: AABUD2
Resource Type:
Conference
Journal Name:
AAPG Bulletin (American Association of Petroleum Geologists); (United States)
Additional Journal Information:
Journal Volume: 77:2; Conference: International congress of the American Association of Petroleum Geologists (AAPG), Caracas (Venezuela), 14-17 Mar 1993; Journal ID: ISSN 0149-1423
Country of Publication:
United States
Language:
English
Subject:
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; TECTONICS; WEST INDIES; 020200* - Petroleum- Reserves, Geology, & Exploration; 580000 - Geosciences

Citation Formats

Beltran, C. Preliminary observations on Quaternary reverse faulting along the southern front of the Northern Range of Trinidad. United States: N. p., 1993. Web.
Beltran, C. Preliminary observations on Quaternary reverse faulting along the southern front of the Northern Range of Trinidad. United States.
Beltran, C. 1993. "Preliminary observations on Quaternary reverse faulting along the southern front of the Northern Range of Trinidad". United States.
@article{osti_6103184,
title = {Preliminary observations on Quaternary reverse faulting along the southern front of the Northern Range of Trinidad},
author = {Beltran, C},
abstractNote = {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.},
doi = {},
url = {https://www.osti.gov/biblio/6103184}, journal = {AAPG Bulletin (American Association of Petroleum Geologists); (United States)},
issn = {0149-1423},
number = ,
volume = 77:2,
place = {United States},
year = {Mon Feb 01 00:00:00 EST 1993},
month = {Mon Feb 01 00:00:00 EST 1993}
}

Conference:
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