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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
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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
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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.........