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  • Database and Map of Quaternary faults and folds of Ecuador andits 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 theNorth American Stratigraphic Code. Any use of trade names in this publication is for descriptive purposes only and does notimply endorsement by the U.S. Geological Survey.

    2003

  • Database and Map of Quaternary Faults and Folds of Ecuadorand 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 Politcnica NacionalDepartamento Geologa & Instituto Geofsico

    Casilla 17-01-2759Quito, Ecuador

    2 U.S. Geological SurveyCentral Geologic Hazards Team

    Denver, Colorado, USA3 Universidad Nacional de San Luis

    Departamento de GeologaCasilla de Correo 320San Luis, Argentina

    Regional Coordinator for Central America

    CARLOS COSTAUniversidad Nacional de San Luis

    Departamento de GeologaCasilla de Correo 320San Luis, Argentina

    International Lithosphere ProgramTask Group II-2 Co-Chairman (Western Hemisphere)

    MICHAEL MACHETTEU.S. Geological Survey

    Central Geologic Hazards Team, MS 966P.O. Box 25046

    Denver, Colorado, USA

    May 2003 Version International LithosphereProgram

  • i

    TABLE OF CONTENTSPage

    INTRODUCTION....................................................................................................................................... 1STRATEGY AND PURPOSE ...................................................................................................................... 1TECTONIC SETTING................................................................................................................................. 2MAJOR STRUCTURAL ELEMENTS........................................................................................................... 3PREPARATION OF MAP AND DATABASE................................................................................................. 3

    MAP...................................................................................................................................................... 3DATABASE.............................................................................................................................................. 4

    DEFINITION OF DATABASE TERMS ......................................................................................................... 4ACKNOWLEDGEMENTS........................................................................................................................... 6REFERENCES CITED................................................................................................................................ 6DATABASE OF FAULTS AND FOLDS........................................................................................................ 8EC-01, SAN LORENZO LINEAMENT.......................................................................................................... 8EC-02, ESMERALDAS FAULT................................................................................................................... 8

    EC-02A, NORTHERN SECTION..................................................................................................................... 8EC-02B, SOUTHERN SECTION..................................................................................................................... 9

    EC-03, RO CANAND .............................................................................................................................. 9EC-03A, WESTERN SECTION....................................................................................................................... 9EC-03B, CENTRAL SECTION..................................................................................................................... 10EC-03C, EASTERN SECTION...................................................................................................................... 10

    EC-04, GALERA FAULT.......................................................................................................................... 10EC-05, BUGA FAULT .............................................................................................................................. 11EC-06, MACHE LINEAMENT................................................................................................................... 11EC-07, CAAVERAL FAULT................................................................................................................... 12

    EC-07A, NORTHERN SECTION................................................................................................................... 12EC-07B, CENTRAL SECTION..................................................................................................................... 12EC-07C, JAMA SECTION .......................................................................................................................... 13EC-07D, SAN ISIDRO SECTION.................................................................................................................. 13

    EC-08, QUININD FAULT........................................................................................................................ 13EC-10, BAHA FAULT ............................................................................................................................. 14

    EC-10A, NORTHERN SECTION................................................................................................................... 14EC-10B, SOUTHERN SECTION................................................................................................................... 15

    EC-11, CALCETA FAULT........................................................................................................................ 15EC-12, DAULE FAULT ............................................................................................................................ 15EC-13, BUENA FE FAULT ....................................................................................................................... 16EC-14, JIPIJAPA FAULT.......................................................................................................................... 16EC-14A, JIPIJAPA SECTION .................................................................................................................... 17EC-14B, JULCUY (FAULT) SECTION........................................................................................................ 17EC-15, RO COLIMES FAULT.................................................................................................................. 17EC-16, COLONCHE FAULT ZONE............................................................................................................ 18

    EC-16A, NORTHWESTERN SECTION ........................................................................................................... 18EC-16B, NORTHERN SECTION................................................................................................................... 18EC-16C, CENTRAL SECTION..................................................................................................................... 19EC-16D, SOUTHERN SECTION................................................................................................................... 19

    EC-17, CARRIZAL FAULT....................................................................................................................... 19

  • ii

    EC-18, LA CRUZ FAULT......................................................................................................................... 20EC-19, CHANDUY FAULT....................................................................................................................... 20EC-20, POSORJA FAULT......................................................................................................................... 21EC-21, JAMBEL FAULT.......................................................................................................................... 21EC-22, PUN FAULT .............................................................................................................................. 22EC-23, SAN ISIDRO FAULT..................................................................................................................... 22EC-24, EL ANGEL FAULT ....................................................................................................................... 23EC-25, RO AMBI FAULT ........................................................................................................................ 24EC-26, OTAVALO FAULT........................................................................................................................ 24EC-27, BILLECOCHA-HUYRAPUNGO FAULT........................................................................................... 25

    EC-27A, BILLECOCHA SECTION ................................................................................................................ 25EC-27B, HUAYRAPUNGO SECTION............................................................................................................ 26

    EC-28, APUELA FAULT .......................................................................................................................... 26EC-28A, NORTHEASTERN SECTION.........

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