Compressional Pilocene and compressional-transpressional Pliocene states of stress, southern Chilean Andes (38-42º30'S).
Estados de esfuerzo compresivo plioceno y compresivo- transpresivo pleistoceno, Andes del sur, Chile (38-42º30'S).
| dc.contributor | en-US | |
| dc.contributor | es-ES | |
| dc.creator | Lavenu, Alain | |
| dc.creator | Cembrano, Jose | |
| dc.date | 2010-07-05 | |
| dc.identifier | http://www.andeangeology.cl/index.php/revista1/article/view/V26n1-a04 | |
| dc.identifier | 10.5027/andgeoV26n1-a04 | |
| dc.description | Miocene-Pliocene and Quaternary intrusive rocks and sedimentary deposits from the Central Depression and the Main Cordillera, between 38 and 42º30'S, have been affected by local and regional brittle deformation. Microfault geometry and kinematic analysis along with calculation of deviatoric tensors allowed to determine regional-seale states of stress. Two tectonic events were identified. A Pliocene event, prior to the Quaternary, affects the entire zone of study, and is characterized by a maximum compressional stress s1 roughly oriented in an E-W direction. A Pleistocene event corresponds to an overall deformation partitioned into two coeval distinctive states of stress: a compressional stress s1 oriented in a N-S to NNE-SSW direction in the fore arc zone, and a dextral transpressional state of stress with s1 striking NE-SW, in the intra-arc zone. | en-US |
| dc.description | Las rocas intrusivas y los sedimentos mioceno-pliocenos y pleistocenos de la Depresion Central y de la Cordillera Principal entre los 38 y 42º30'S, han sido afectados por deformacion fragil tanto de caracter local como regional. El estudio de la geometria y cinematica de microfallas y el analisis de los tensores desviatoricos permitieron establecer los estados de esfuerzo a la escala regional. Se determinaron dos eventos tectonicos: 1- un evento plioceno, de tipo compresivo uniaxial, pre-Cuaternario y generalizado en toda la zona estudiada, con una direccion de esfuerzo principal s1 cercana a E-W; 2- un evento pleistoceno, con una particion de los esfuerzos, caracterizado en la zona de ante-arco por una compresion con una direccion de esfuerzo principal s1 NNE-SSW a N-S, y en la zona de intra-arco por una transgresion dextral con una direccion de esfuerzo principal s1 NE-SW. | es-ES |
| dc.format | application/pdf | |
| dc.format | text/html | |
| dc.language | eng | |
| dc.publisher | Servicio Nacional de Geología y Minería | en-US |
| dc.relation | http://www.andeangeology.cl/index.php/revista1/article/view/V26n1-a04/915 | |
| dc.relation | http://www.andeangeology.cl/index.php/revista1/article/view/V26n1-a04/html | |
| dc.source | Andean Geology; Vol 26, No 1 (1999); 67-87 | es-ES |
| dc.source | Andean Geology; Vol 26, No 1 (1999); 67-87 | en-US |
| dc.source | 0718-7106 | |
| dc.source | 0718-7092 | |
| dc.title | Compressional Pilocene and compressional-transpressional Pliocene states of stress, southern Chilean Andes (38-42º30'S). | en-US |
| dc.title | Estados de esfuerzo compresivo plioceno y compresivo- transpresivo pleistoceno, Andes del sur, Chile (38-42º30'S). | es-ES |
| dc.type | info:eu-repo/semantics/article | |
| dc.type | info:eu-repo/semantics/publishedVersion | |
| dc.type | es-ES | |
| dc.type | en-US |
This item appears in the following Collection(s)
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Andean Geology
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