Database and Map of Quaternary Faults and Folds of Ecuador and Its Offshore Regions
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Database and Map of Quaternary faults and folds of Ecuador and its offshore regions By Arturo Eguez, Alexandra Alvarado, Hugo Yepes, Michael N. Machette, Carlos Costa and Richard L. Dart Open-File Report 03-289 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. 2003 Database and Map of Quaternary Faults and Folds of Ecuador 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 ARTURO EGUEZ, 1 ALEXANDRA ALVARADO, 1 HUGO YEPES, 2 MICHAEL N. MACHETTE, 3 CARLOS COSTA, 2 RICHARD L. DART, and 2 LEE-ANN BRADLEY 1 Escuela Politécnica Nacional Departamento Geología & Instituto Geofísico Casilla 17-01-2759 Quito, Ecuador 2 U.S. Geological Survey Central Geologic Hazards Team Denver, Colorado, USA 3 Universidad Nacional de San Luis Departamento de Geología Casilla de Correo 320 San Luis, Argentina Regional Coordinator for Central America CARLOS COSTA Universidad Nacional de San Luis Departamento de Geología Casilla de Correo 320 San Luis, Argentina International Lithosphere Program Task Group II-2 Co-Chairman (Western Hemisphere) MICHAEL MACHETTE U.S. Geological Survey Central Geologic Hazards Team, MS 966 P.O. Box 25046 Denver, Colorado, USA May 2003 Version International Lithosphere Program TABLE OF CONTENTS Page INTRODUCTION....................................................................................................................................... 1 STRATEGY AND PURPOSE ...................................................................................................................... 1 TECTONIC SETTING................................................................................................................................. 2 MAJOR STRUCTURAL ELEMENTS........................................................................................................... 3 PREPARATION OF MAP AND DATABASE................................................................................................. 3 MAP ...................................................................................................................................................... 3 DATABASE.............................................................................................................................................. 4 DEFINITION OF DATABASE TERMS ......................................................................................................... 4 ACKNOWLEDGEMENTS........................................................................................................................... 6 REFERENCES CITED................................................................................................................................ 6 DATABASE OF FAULTS AND FOLDS........................................................................................................ 8 EC-01, SAN LORENZO LINEAMENT.......................................................................................................... 8 EC-02, ESMERALDAS FAULT................................................................................................................... 8 EC-02A, NORTHERN SECTION..................................................................................................................... 8 EC-02B, SOUTHERN SECTION..................................................................................................................... 9 EC-03, RÍO CANANDÉ .............................................................................................................................. 9 EC-03A, WESTERN SECTION....................................................................................................................... 9 EC-03B, CENTRAL SECTION..................................................................................................................... 10 EC-03C, EASTERN SECTION...................................................................................................................... 10 EC-04, GALERA FAULT.......................................................................................................................... 10 EC-05, BUGA FAULT .............................................................................................................................. 11 EC-06, MACHE LINEAMENT................................................................................................................... 11 EC-07, CAÑAVERAL FAULT................................................................................................................... 12 EC-07A, NORTHERN SECTION................................................................................................................... 12 EC-07B, CENTRAL SECTION..................................................................................................................... 12 EC-07C, JAMA SECTION .......................................................................................................................... 13 EC-07D, SAN ISIDRO SECTION.................................................................................................................. 13 EC-08, QUININDÉ FAULT........................................................................................................................ 13 EC-10, BAHÍA FAULT ............................................................................................................................. 14 EC-10A, NORTHERN SECTION................................................................................................................... 14 EC-10B, SOUTHERN SECTION................................................................................................................... 15 EC-11, CALCETA FAULT........................................................................................................................ 15 EC-12, DAULE FAULT ............................................................................................................................ 15 EC-13, BUENA FE FAULT ....................................................................................................................... 16 EC-14, JIPIJAPA FAULT.......................................................................................................................... 16 EC-14A, JIPIJAPA SECTION .................................................................................................................... 17 EC-14B, JULCUY (FAULT) SECTION........................................................................................................ 17 EC-15, RÍO COLIMES FAULT.................................................................................................................. 17 EC-16, COLONCHE FAULT ZONE............................................................................................................ 18 EC-16A, NORTHWESTERN SECTION ........................................................................................................... 18 EC-16B, NORTHERN SECTION................................................................................................................... 18 EC-16C, CENTRAL SECTION..................................................................................................................... 19 EC-16D, SOUTHERN SECTION................................................................................................................... 19 EC-17, CARRIZAL FAULT....................................................................................................................... 19 i EC-18, LA CRUZ FAULT......................................................................................................................... 20 EC-19, CHANDUY FAULT....................................................................................................................... 20 EC-20, POSORJA FAULT......................................................................................................................... 21 EC-21, JAMBELÍ FAULT.......................................................................................................................... 21 EC-22, PUNÁ FAULT .............................................................................................................................. 22 EC-23, SAN ISIDRO FAULT..................................................................................................................... 22 EC-24, EL ANGEL FAULT ....................................................................................................................... 23 EC-25, RÍO AMBI FAULT ........................................................................................................................ 24 EC-26, OTAVALO FAULT........................................................................................................................ 24 EC-27, BILLECOCHA-HUYRAPUNGO FAULT........................................................................................... 25 EC-27A, BILLECOCHA SECTION ................................................................................................................ 25 EC-27B, HUAYRAPUNGO SECTION...........................................................................................................