U.S. Department of the Interior U.S. Geological Survey Map and Database of Quaternary Faults in Venezuela and its Offshore Regions By Franck A. Audemard M., Michael N. Machette, Jonathan W. Cox, Richard L. Dart, and Kathleen M. Haller Open-File Report 00-018 (paper edition) This report is preliminary and has not been reviewed for conformity with U.S. Geological Survey editorial standards nor with the North American Stratigraphic Code. Any use of trade names in this publication is for descriptive purposes only and does not imply endorsement by the U.S. Geological Survey. 2000 Map and Database of Quaternary Faults in Venezuela and its Offshore Regions A project of the International Lithosphere Program Task Group II-2, Major Active Faults of the World Data and map compiled by 1 FRANCK A. AUDEMARD M., 2 MICHAEL N. MACHETTE, 2 JONATHAN W. COX, 2 RICHARD L. DART, AND 2 KATHLEEN M. HALLER 1 Fundación Venezolana de Investigaciones Sismológicas (FUNVISIS) Dpto. Ciencias de la Tierra, Prolongacion Calle Mara, El Llanito Caracas 1070-A, Venezuela 2 U.S. Geological Survey (USGS) Central Geologic Hazards Team MS 966, P.O. Box 25046 Denver, Colorado, USA Regional Coordinator for Central America CARLOS COSTA Universidad Nacional de San Luis Departmento de Geologia Casilla de Correo 320 San Luis, Argentina ILP Task Group II-2 Co-Chairman, Western Hemisphere MICHAEL MACHETTE U.S. Geological Survey (USGS) Central Geologic Hazards Team MS 966, P.O. Box 25046 Denver, Colorado, USA January 2000 version i TABLE OF CONTENTS PAGE INTRODUCTION...............................................................................................................................................................1 STRATEGY AND PURPOSE............................................................................................................................................2 TECTONIC SETTING........................................................................................................................................................2 BOCONÓ FAULT....................................................................................................................................................................3 EL PILAR FAULT...................................................................................................................................................................4 OCA-ANCÓN FAULT SYSTEM ................................................................................................................................................5 PREPARATION OF THE DATABASE AND MAP.......................................................................................................5 MAP ....................................................................................................................................................................................7 DATABASE ..........................................................................................................................................................................7 DEFINITION OF DATABASE TERMS..........................................................................................................................8 ACKNOWLEDGEMENTS..............................................................................................................................................10 REFERENCES CITED ABOVE.....................................................................................................................................10 DATABASE FOR VENEZUELA....................................................................................................................................13 VE-01, OCA-ANCÓN FAULT SYSTEM.......................................................................................................................13 VE-01A, OCA FAULT OF OCA-ANCÓN FAULT SYSTEM ......................................................................................................13 VE-01B, ANCÓN FAULT OF OCA-ANCÓN FAULT SYSTEM...................................................................................................16 VE-01C, CAMARE-PARAISO FAULT OF OCA-ANCÓN FAULT SYSTEM................................................................................18 VE-01D, UNNAMED SECTION OF OCA-ANCÓN FAULT SYSTEM ..........................................................................................19 VE-01E, SOCREMO FAULT OF OCA-ANCÓN FAULT SYSTEM ...............................................................................................20 VE-02, URUMACO FAULT............................................................................................................................................21 VE-02A, WEST SECTION OF URUMACO FAULT ..................................................................................................................22 VE-02B, EAST SECTION OF URUMACO FAULT ...................................................................................................................23 VE-03, RÍO SECO FAULT..............................................................................................................................................25 VE-04, VALERA FAULT SYSTEM................................................................................................................................26 VE-04A, VALERA FAULT OF VALERA FAULT SYSTEM........................................................................................................27 VE-04B, RÍO MOMBOY FAULT OF VALERA FAULT SYSTEM ...............................................................................................28 VE-05, TUÑAME FAULT................................................................................................................................................29 VE-05A, SOUTH SECTION OF TUÑAME FAULT ...................................................................................................................29 VE-05B, NORTH SECTION OF TUÑAME FAULT ...................................................................................................................30 VE-06, BOCONÓ FAULT SYSTEM..............................................................................................................................31 VE-06A, SOUTH OF MÉRIDA SECTION OF BOCONÓ FAULT SYSTEM ....................................................................................32 1610 SURFACE FAULTING ON VE-06A, SOUTH OF MÉRIDA SECTION................................................................................32 1894 SURFACE FAULTING ON VE-06A, SOUTH OF MÉRIDA SECTION................................................................................33 VE-06B, SANTA CRUZ DE MORA TO LOS FRAILES SECTION OF BOCONÓ FAULT SYSTEM ...................................................35 VE-06C, MUCUCHÍES TO ANZOÁTEGUI SECTION OF BOCONÓ FAULT SYSTEM.....................................................................38 VE-06D, ANZOÁTEGUI TO BARQUISIMETO SECTION OF BOCONÓ FAULT SYSTEM ..............................................................41 VE-06E, CABUDARE TO MORÓN SECTION OF BOCONÓ FAULT SYSTEM ..............................................................................44 VE-07, ANDES SOUTHERN FOOTHILLS FLEXURE.............................................................................................47 VE-08, LA VICTORIA FAULT SYSTEM......................................................................................................................48 VE-08A, GUACAMAYA FAULT OF LA VICTORIA FAULT SYSTEM.......................................................................................49 VE-08B, LA CABRERA FAULT OF LA VICTORIA FAULT SYSTEM ........................................................................................50 VE-08C, EL HORNO FAULT OF LA VICTORIA FAULT SYSTEM.............................................................................................51 VE-08D, LA VICTORIA FAULT OF LA VICTORIA FAULT SYSTEM ........................................................................................52 VE-08E, PICHAO FAULT OF LA VICTORIA FAULT SYSTEM .................................................................................................53 VE-09, RÍO GUÁRICO FAULT.....................................................................................................................................54 VE-09A, NORTH SECTION OF RÍO GUÁRICO FAULT ...........................................................................................................55 VE-09B, SOUTH SECTION OF RIÓ GUÁRICO FAULT ......................................................................................................... 556 VE-10, TACAGUA-EL AVILA FAULT SYSTEM........................................................................................................56 VE-10A, TACAGUA FAULT OF TACAGUA-EL AVILA FAULT SYSTEM..................................................................................57 VE-10B, EL AVILA FAULT OF TACAGUA-EL AVILA FAULT SYSTEM ...................................................................................58 VE-11, TÁCATA FAULT..................................................................................................................................................59 VE-12, PÍRITU FAULT....................................................................................................................................................60 VE-13, EL PILAR FAULT...............................................................................................................................................61