Cretaceous and Paleogene geologic history of coastal Ecuador |
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Authors: | Dr Tomas Feininger Dr C Roger Bristow |
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Institution: | (1) Departamento de Geología, Escuela Politécnica Nacional, Quito, Ecuador;(2) Present address: Département de Géologie, Université Laval, G1K 7P4 Québec, Que, Canada;(3) Present address: Institute of GeologicalSciences, 5 Princes Gate, SW7 1QN London, UK |
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Abstract: | Following a general review of the Cretaceous and Paleogene geology of Ecuador, we propose a geologic history from early Cretaceous through Oligocene time with emphasis on the coastal part of the country that is based on the interpretive interaction of three oceanic plates (the Bolívar, proto-Nazca, and Nazca) and the continental South American plate. The proposed history invokes large lateral displacements, the intervention of the previously unrecognized Bolívar plate, the development of three successive subduction zones, the formation of a distant oceanic island arc and its subsequent collision with the South American plate, the emplacement of a major olistostrome complex, and an intricate record of displacement on a currently inactive transform fault. The proposed history offers a viable solution to four major problems of the geology of coastal Ecuador.
Zusammenfassung Aus der Kreide- und Paläogen-Geschichte Ecuadors läßt sich die Entwicklung der Küstenregion ableiten. Sie wird vom Zusammenwirken von drei ozeanischen Platten (Bolivar, Proto-Nazca und Nazca) und der kontinentalen Platte Südamerikas bestimmt. Die Entwicklung umfaßt ausgedehnte Seitenverschiebungen, das Auftreten einer bisher nicht erkannten Bolivar-Platte, die Anlage von drei aufeinanderfolgenden Subduktionszonen, die Bildung eines Inselbogens und die folgende Kollision mit der Südamerikanischen Platte, die Ablagerung eines großen Olisthostrom-Komplexes und die Verschiebungen entlang einer heute inaktiven Transform-Verwerfung. Damit sind eine Reihe von Problemen der Geologie des Küstenabschnittes Ecuadors gelöst.
Résumé Passant en revue la géologie de l'Equateur au Crétacique et Paléogène, les auteurs proposent une histoire géologique allant depuis le Crétacique inférieur à l'Oligocène en mettant l'accent sur la région cÔtière, et en se basant sur l'interaction de trois plaques océaniques (bolivienne, proto-Nasca et Nasca) et de la plaque continentale de l'Amérique du Sud. L'histoire proposée fait appel à de grands déplacements, à l'intervention de la plaque bolivienne non reconnue antérieurement, au développement de trois zones de subduction successives, à la formation d'une guirlande d'Îles océaniques distante et sa collision subséquente avec la plaque de l'Amérique du Sud, à la mise en place d'un grand complexe olistostromique et à un déplacement sur une faille transformante inactive. L'histoire proposée apporte une solution viable à quatre problèmes de la géologie de la Région cÔtière de l'Equateur.
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![tscy](/content/r0pkj5v1557q32x5/xxlarge1094.gif) ![Icy](/content/r0pkj5v1557q32x5/xxlarge1048.gif) , ![pcy](/content/r0pkj5v1557q32x5/xxlarge1087.gif) ![Ocy](/content/r0pkj5v1557q32x5/xxlarge1054.gif) ![scy](/content/r0pkj5v1557q32x5/xxlarge1089.gif) ![lcy](/content/r0pkj5v1557q32x5/xxlarge1083.gif) ![IEcy](/content/r0pkj5v1557q32x5/xxlarge1045.gif) ![Ocy](/content/r0pkj5v1557q32x5/xxlarge1054.gif) ![Vcy](/content/r0pkj5v1557q32x5/xxlarge1042.gif) ![Acy](/content/r0pkj5v1557q32x5/xxlarge1040.gif) ![tcy](/content/r0pkj5v1557q32x5/xxlarge1090.gif) ![IEcy](/content/r0pkj5v1557q32x5/xxlarge1045.gif) ![lcy](/content/r0pkj5v1557q32x5/xxlarge1083.gif) ![softcy](/content/r0pkj5v1557q32x5/xxlarge1100.gif) ![Ncy](/content/r0pkj5v1557q32x5/xxlarge1053.gif) ![Ocy](/content/r0pkj5v1557q32x5/xxlarge1054.gif) ![zhcy](/content/r0pkj5v1557q32x5/xxlarge1078.gif) ![Acy](/content/r0pkj5v1557q32x5/xxlarge1040.gif) ![Mcy](/content/r0pkj5v1557q32x5/xxlarge1052.gif) ![IEcy](/content/r0pkj5v1557q32x5/xxlarge1045.gif) ![SHCHcy](/content/r0pkj5v1557q32x5/xxlarge1065.gif) ![Acy](/content/r0pkj5v1557q32x5/xxlarge1040.gif) ![Ucy](/content/r0pkj5v1557q32x5/xxlarge1059.gif) ![SHCHcy](/content/r0pkj5v1557q32x5/xxlarge1065.gif) ![Icy](/content/r0pkj5v1557q32x5/xxlarge1048.gif) ![Dcy](/content/r0pkj5v1557q32x5/xxlarge1044.gif) ![Rcy](/content/r0pkj5v1557q32x5/xxlarge1056.gif) ![Ucy](/content/r0pkj5v1557q32x5/xxlarge1059.gif) ![Dcy](/content/r0pkj5v1557q32x5/xxlarge1044.gif) ![Rcy](/content/r0pkj5v1557q32x5/xxlarge1056.gif) ![Ucy](/content/r0pkj5v1557q32x5/xxlarge1059.gif) ![gcy](/content/r0pkj5v1557q32x5/xxlarge1075.gif) , ![Ocy](/content/r0pkj5v1557q32x5/xxlarge1054.gif) ![Bcy](/content/r0pkj5v1557q32x5/xxlarge1041.gif) ![Rcy](/content/r0pkj5v1557q32x5/xxlarge1056.gif) ![Acy](/content/r0pkj5v1557q32x5/xxlarge1040.gif) ![zhcy](/content/r0pkj5v1557q32x5/xxlarge1078.gif) ![Ocy](/content/r0pkj5v1557q32x5/xxlarge1054.gif) ![Vcy](/content/r0pkj5v1557q32x5/xxlarge1042.gif) ![Acy](/content/r0pkj5v1557q32x5/xxlarge1040.gif) ![Ncy](/content/r0pkj5v1557q32x5/xxlarge1053.gif) ![Icy](/content/r0pkj5v1557q32x5/xxlarge1048.gif) ![Ocy](/content/r0pkj5v1557q32x5/xxlarge1054.gif) ![tcy](/content/r0pkj5v1557q32x5/xxlarge1090.gif) ![Rcy](/content/r0pkj5v1557q32x5/xxlarge1056.gif) ![Ocy](/content/r0pkj5v1557q32x5/xxlarge1054.gif) ![Vcy](/content/r0pkj5v1557q32x5/xxlarge1042.gif) ![Ncy](/content/r0pkj5v1557q32x5/xxlarge1053.gif) ![Ocy](/content/r0pkj5v1557q32x5/xxlarge1054.gif) ![Dcy](/content/r0pkj5v1557q32x5/xxlarge1044.gif) ![Ucy](/content/r0pkj5v1557q32x5/xxlarge1059.gif) ![gcy](/content/r0pkj5v1557q32x5/xxlarge1075.gif) ![pcy](/content/r0pkj5v1557q32x5/xxlarge1087.gif) ![Ocy](/content/r0pkj5v1557q32x5/xxlarge1054.gif) ![scy](/content/r0pkj5v1557q32x5/xxlarge1089.gif) ![lcy](/content/r0pkj5v1557q32x5/xxlarge1083.gif) ![IEcy](/content/r0pkj5v1557q32x5/xxlarge1045.gif) ![Ucy](/content/r0pkj5v1557q32x5/xxlarge1059.gif) ![Ucy](/content/r0pkj5v1557q32x5/xxlarge1059.gif) ![SHCHcy](/content/r0pkj5v1557q32x5/xxlarge1065.gif) ![IEcy](/content/r0pkj5v1557q32x5/xxlarge1045.gif) ![scy](/content/r0pkj5v1557q32x5/xxlarge1089.gif) ![tcy](/content/r0pkj5v1557q32x5/xxlarge1090.gif) ![Ocy](/content/r0pkj5v1557q32x5/xxlarge1054.gif) ![lcy](/content/r0pkj5v1557q32x5/xxlarge1083.gif) ![kcy](/content/r0pkj5v1557q32x5/xxlarge1082.gif) ![Ncy](/content/r0pkj5v1557q32x5/xxlarge1053.gif) ![Ocy](/content/r0pkj5v1557q32x5/xxlarge1054.gif) ![Vcy](/content/r0pkj5v1557q32x5/xxlarge1042.gif) ![IEcy](/content/r0pkj5v1557q32x5/xxlarge1045.gif) ![Ncy](/content/r0pkj5v1557q32x5/xxlarge1053.gif) ![Icy](/content/r0pkj5v1557q32x5/xxlarge1048.gif) ![IEcy](/content/r0pkj5v1557q32x5/xxlarge1045.gif) ![Ucy](/content/r0pkj5v1557q32x5/xxlarge1059.gif) ![zhcy](/content/r0pkj5v1557q32x5/xxlarge1078.gif) ![Ocy](/content/r0pkj5v1557q32x5/xxlarge1054.gif) ![Acy](/content/r0pkj5v1557q32x5/xxlarge1040.gif) ![Mcy](/content/r0pkj5v1557q32x5/xxlarge1052.gif) ![IEcy](/content/r0pkj5v1557q32x5/xxlarge1045.gif) ![Rcy](/content/r0pkj5v1557q32x5/xxlarge1056.gif) ![Icy](/content/r0pkj5v1557q32x5/xxlarge1048.gif) ![kcy](/content/r0pkj5v1557q32x5/xxlarge1082.gif) ![Acy](/content/r0pkj5v1557q32x5/xxlarge1040.gif) ![Ncy](/content/r0pkj5v1557q32x5/xxlarge1053.gif) ![scy](/content/r0pkj5v1557q32x5/xxlarge1089.gif) ![kcy](/content/r0pkj5v1557q32x5/xxlarge1082.gif) ![Ocy](/content/r0pkj5v1557q32x5/xxlarge1054.gif) ![pcy](/content/r0pkj5v1557q32x5/xxlarge1087.gif) ![lcy](/content/r0pkj5v1557q32x5/xxlarge1083.gif) ![Icy](/content/r0pkj5v1557q32x5/xxlarge1048.gif) ![tcy](/content/r0pkj5v1557q32x5/xxlarge1090.gif) ![Ocy](/content/r0pkj5v1557q32x5/xxlarge1054.gif) , ![Ocy](/content/r0pkj5v1557q32x5/xxlarge1054.gif) ![tcy](/content/r0pkj5v1557q32x5/xxlarge1090.gif) ![lcy](/content/r0pkj5v1557q32x5/xxlarge1083.gif) ![Ocy](/content/r0pkj5v1557q32x5/xxlarge1054.gif) ![zhcy](/content/r0pkj5v1557q32x5/xxlarge1078.gif) ![IEcy](/content/r0pkj5v1557q32x5/xxlarge1045.gif) ![Ncy](/content/r0pkj5v1557q32x5/xxlarge1053.gif) ![Icy](/content/r0pkj5v1557q32x5/xxlarge1048.gif) ![Mcy](/content/r0pkj5v1557q32x5/xxlarge1052.gif) ![Ocy](/content/r0pkj5v1557q32x5/xxlarge1054.gif) ![Ncy](/content/r0pkj5v1557q32x5/xxlarge1053.gif) ![Ocy](/content/r0pkj5v1557q32x5/xxlarge1054.gif) ![gcy](/content/r0pkj5v1557q32x5/xxlarge1075.gif) ![kcy](/content/r0pkj5v1557q32x5/xxlarge1082.gif) ![Ocy](/content/r0pkj5v1557q32x5/xxlarge1054.gif) ![kcy](/content/r0pkj5v1557q32x5/xxlarge1082.gif) ![Mcy](/content/r0pkj5v1557q32x5/xxlarge1052.gif) ![pcy](/content/r0pkj5v1557q32x5/xxlarge1087.gif) ![lcy](/content/r0pkj5v1557q32x5/xxlarge1083.gif) ![IEcy](/content/r0pkj5v1557q32x5/xxlarge1045.gif) ![kcy](/content/r0pkj5v1557q32x5/xxlarge1082.gif) ![scy](/content/r0pkj5v1557q32x5/xxlarge1089.gif) Olistostrome ![Acy](/content/r0pkj5v1557q32x5/xxlarge1040.gif) ![Dcy](/content/r0pkj5v1557q32x5/xxlarge1044.gif) ![Vcy](/content/r0pkj5v1557q32x5/xxlarge1042.gif) ![Icy](/content/r0pkj5v1557q32x5/xxlarge1048.gif) ![Vcy](/content/r0pkj5v1557q32x5/xxlarge1042.gif) ![Dcy](/content/r0pkj5v1557q32x5/xxlarge1044.gif) ![Ocy](/content/r0pkj5v1557q32x5/xxlarge1054.gif) ![lcy](/content/r0pkj5v1557q32x5/xxlarge1083.gif) ![scy](/content/r0pkj5v1557q32x5/xxlarge1089.gif) ![IEcy](/content/r0pkj5v1557q32x5/xxlarge1045.gif) ![gcy](/content/r0pkj5v1557q32x5/xxlarge1075.gif) ![Ocy](/content/r0pkj5v1557q32x5/xxlarge1054.gif) ![Dcy](/content/r0pkj5v1557q32x5/xxlarge1044.gif) ![Ncy](/content/r0pkj5v1557q32x5/xxlarge1053.gif) ![Ucy](/content/r0pkj5v1557q32x5/xxlarge1059.gif) ![zhcy](/content/r0pkj5v1557q32x5/xxlarge1078.gif) ![Ncy](/content/r0pkj5v1557q32x5/xxlarge1053.gif) ![IEcy](/content/r0pkj5v1557q32x5/xxlarge1045.gif) ![kcy](/content/r0pkj5v1557q32x5/xxlarge1082.gif) ![tcy](/content/r0pkj5v1557q32x5/xxlarge1090.gif) ![Icy](/content/r0pkj5v1557q32x5/xxlarge1048.gif) ![Vcy](/content/r0pkj5v1557q32x5/xxlarge1042.gif) ![Ncy](/content/r0pkj5v1557q32x5/xxlarge1053.gif) ![Ocy](/content/r0pkj5v1557q32x5/xxlarge1054.gif) ![gcy](/content/r0pkj5v1557q32x5/xxlarge1075.gif) ![pcy](/content/r0pkj5v1557q32x5/xxlarge1087.gif) ![Rcy](/content/r0pkj5v1557q32x5/xxlarge1056.gif) ![IEcy](/content/r0pkj5v1557q32x5/xxlarge1045.gif) ![Ocy](/content/r0pkj5v1557q32x5/xxlarge1054.gif) ![Bcy](/content/r0pkj5v1557q32x5/xxlarge1041.gif) ![Rcy](/content/r0pkj5v1557q32x5/xxlarge1056.gif) ![Acy](/content/r0pkj5v1557q32x5/xxlarge1040.gif) ![zhcy](/content/r0pkj5v1557q32x5/xxlarge1078.gif) ![Ucy](/content/r0pkj5v1557q32x5/xxlarge1059.gif) ![SHCHcy](/content/r0pkj5v1557q32x5/xxlarge1065.gif) ![IEcy](/content/r0pkj5v1557q32x5/xxlarge1045.gif) ![gcy](/content/r0pkj5v1557q32x5/xxlarge1075.gif) ![scy](/content/r0pkj5v1557q32x5/xxlarge1089.gif) ![Bcy](/content/r0pkj5v1557q32x5/xxlarge1041.gif) ![Rcy](/content/r0pkj5v1557q32x5/xxlarge1056.gif) ![Ocy](/content/r0pkj5v1557q32x5/xxlarge1054.gif) ![scy](/content/r0pkj5v1557q32x5/xxlarge1089.gif) . ![IOcy](/content/r0pkj5v1557q32x5/xxlarge1025.gif) ![tcy](/content/r0pkj5v1557q32x5/xxlarge1090.gif) ![Icy](/content/r0pkj5v1557q32x5/xxlarge1048.gif) ![Mcy](/content/r0pkj5v1557q32x5/xxlarge1052.gif) ![Icy](/content/r0pkj5v1557q32x5/xxlarge1048.gif) ![scy](/content/r0pkj5v1557q32x5/xxlarge1089.gif) ![scy](/content/r0pkj5v1557q32x5/xxlarge1089.gif) ![lcy](/content/r0pkj5v1557q32x5/xxlarge1083.gif) ![IEcy](/content/r0pkj5v1557q32x5/xxlarge1045.gif) ![Dcy](/content/r0pkj5v1557q32x5/xxlarge1044.gif) ![Ocy](/content/r0pkj5v1557q32x5/xxlarge1054.gif) ![Vcy](/content/r0pkj5v1557q32x5/xxlarge1042.gif) ![Acy](/content/r0pkj5v1557q32x5/xxlarge1040.gif) ![Ncy](/content/r0pkj5v1557q32x5/xxlarge1053.gif) ![Icy](/content/r0pkj5v1557q32x5/xxlarge1048.gif) ![softcy](/content/r0pkj5v1557q32x5/xxlarge1100.gif) ![Rcy](/content/r0pkj5v1557q32x5/xxlarge1056.gif) ![Acy](/content/r0pkj5v1557q32x5/xxlarge1040.gif) ![zhcy](/content/r0pkj5v1557q32x5/xxlarge1078.gif) ![Rcy](/content/r0pkj5v1557q32x5/xxlarge1056.gif) ![IEcy](/content/r0pkj5v1557q32x5/xxlarge1045.gif) ![shcy](/content/r0pkj5v1557q32x5/xxlarge1096.gif) ![Icy](/content/r0pkj5v1557q32x5/xxlarge1048.gif) ![lcy](/content/r0pkj5v1557q32x5/xxlarge1083.gif) ![Rcy](/content/r0pkj5v1557q32x5/xxlarge1056.gif) ![softcy](/content/r0pkj5v1557q32x5/xxlarge1100.gif) ![gcy](/content/r0pkj5v1557q32x5/xxlarge1075.gif) ![IEcy](/content/r0pkj5v1557q32x5/xxlarge1045.gif) ![Ocy](/content/r0pkj5v1557q32x5/xxlarge1054.gif) ![lcy](/content/r0pkj5v1557q32x5/xxlarge1083.gif) ![Ocy](/content/r0pkj5v1557q32x5/xxlarge1054.gif) ![Icy](/content/r0pkj5v1557q32x5/xxlarge1048.gif) ![CHcy](/content/r0pkj5v1557q32x5/xxlarge1063.gif) ![IEcy](/content/r0pkj5v1557q32x5/xxlarge1045.gif) ![scy](/content/r0pkj5v1557q32x5/xxlarge1089.gif) ![kcy](/content/r0pkj5v1557q32x5/xxlarge1082.gif) ![Icy](/content/r0pkj5v1557q32x5/xxlarge1048.gif) ![pcy](/content/r0pkj5v1557q32x5/xxlarge1087.gif) ![Rcy](/content/r0pkj5v1557q32x5/xxlarge1056.gif) ![Ocy](/content/r0pkj5v1557q32x5/xxlarge1054.gif) ![Bcy](/content/r0pkj5v1557q32x5/xxlarge1041.gif) ![lcy](/content/r0pkj5v1557q32x5/xxlarge1083.gif) ![IEcy](/content/r0pkj5v1557q32x5/xxlarge1045.gif) ![pcy](/content/r0pkj5v1557q32x5/xxlarge1087.gif) ![Rcy](/content/r0pkj5v1557q32x5/xxlarge1056.gif) ![Icy](/content/r0pkj5v1557q32x5/xxlarge1048.gif) ![Rcy](/content/r0pkj5v1557q32x5/xxlarge1056.gif) ![IEcy](/content/r0pkj5v1557q32x5/xxlarge1045.gif) ![zhcy](/content/r0pkj5v1557q32x5/xxlarge1078.gif) ![Ncy](/content/r0pkj5v1557q32x5/xxlarge1053.gif) ![Ocy](/content/r0pkj5v1557q32x5/xxlarge1054.gif) ![gcy](/content/r0pkj5v1557q32x5/xxlarge1075.gif) ![Rcy](/content/r0pkj5v1557q32x5/xxlarge1056.gif) ![IEcy](/content/r0pkj5v1557q32x5/xxlarge1045.gif) ![gcy](/content/r0pkj5v1557q32x5/xxlarge1075.gif) ![Icy](/content/r0pkj5v1557q32x5/xxlarge1048.gif) ![Ocy](/content/r0pkj5v1557q32x5/xxlarge1054.gif) ![Ncy](/content/r0pkj5v1557q32x5/xxlarge1053.gif) ![IOcy](/content/r0pkj5v1557q32x5/xxlarge1025.gif) ![kcy](/content/r0pkj5v1557q32x5/xxlarge1082.gif) ![Vcy](/content/r0pkj5v1557q32x5/xxlarge1042.gif) ![Acy](/content/r0pkj5v1557q32x5/xxlarge1040.gif) ![Dcy](/content/r0pkj5v1557q32x5/xxlarge1044.gif) ![Ocy](/content/r0pkj5v1557q32x5/xxlarge1054.gif) ![Rcy](/content/r0pkj5v1557q32x5/xxlarge1056.gif) .
Contribution No. 6 A, Departamento de Geología, Escuela Politécnica Nacional, Quito, Ecuador. |
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Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
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