Los pliegues del sinclinal de tunja. análisis estructural y modelamiento geométrico

The Tunja syncline is located at the northern termination of the Altiplano of the Eastern Cordillera, which constitutes a distinct physiographic province in the central part of the Eastern Cordillera between the cities of Bogota and Tunja. Together with its bordering basement cored anticlines, the A...

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Autores:
Kammer, Andreas
Tipo de recurso:
Article of journal
Fecha de publicación:
1997
Institución:
Universidad Nacional de Colombia
Repositorio:
Universidad Nacional de Colombia
Idioma:
spa
OAI Identifier:
oai:repositorio.unal.edu.co:unal/41996
Acceso en línea:
https://repositorio.unal.edu.co/handle/unal/41996
http://bdigital.unal.edu.co/32093/
Palabra clave:
Geología
Ciencias de la tierra
Geociencias
Tunja Syncline
Structural Analysis
Geología
Ciencias de la tierra
Geociencias
Sinclinal de Tunja
Análisis Estructural
Rights
openAccess
License
Atribución-NoComercial 4.0 Internacional
id UNACIONAL2_b83bf689e459c6540a466946325816a3
oai_identifier_str oai:repositorio.unal.edu.co:unal/41996
network_acronym_str UNACIONAL2
network_name_str Universidad Nacional de Colombia
repository_id_str
spelling Atribución-NoComercial 4.0 InternacionalDerechos reservados - Universidad Nacional de Colombiahttp://creativecommons.org/licenses/by-nc/4.0/info:eu-repo/semantics/openAccesshttp://purl.org/coar/access_right/c_abf2Kammer, Andreas2417f128-8177-426d-a932-a6bc823a7a633002019-06-28T10:25:57Z2019-06-28T10:25:57Z1997https://repositorio.unal.edu.co/handle/unal/41996http://bdigital.unal.edu.co/32093/The Tunja syncline is located at the northern termination of the Altiplano of the Eastern Cordillera, which constitutes a distinct physiographic province in the central part of the Eastern Cordillera between the cities of Bogota and Tunja. Together with its bordering basement cored anticlines, the Arcabuco and Toca anticline, it belongs to the Cordillera's first-order structures which are characterized by longitudinal continuities of several hundred kms and display, as a further outstanding feature, an eastern vergence. Superposed on this large scale disposition, trains of second-order folds with lengths of 100 km or less form the next important oroqraphlc features. Some structural independence from the basement-cored structures is documented by their vergences which, at least in the Tunja syncline, consistently oppose the first-order dip directions. The fact that they attain higher amplitudes above the steeply inclined segments of the western flank of the Tunja syncline, suggests an origin by gravity sliding. Yet the observed strain pattern does not unambiguously supports a model of simple detachment folds, as a neutral or even extensive regime at a higher structural level gives way to increasingly compressive deformations at low structural levels. These relations argue for a model in which amplification of the folding occurs at the cost of a homogeneous shortening near the basement-cover contact. A linear geometric extrapolation between oberved surficial folds and a supposedly unfolded basement-cover interface predicts a strain pattern, which is in good agreement with the observed deformations. A third-order, small scale folding affects only strata which have been eroded across anticlinal crests. These structures present themselves as flaps or cascade folds with vergences according to the dip direction of the higher order folds. For their origin a gravitational collapse during a latest stage of the folding process may be advocated.application/pdfspaDepartamento de Geocienciashttp://revistas.unal.edu.co/index.php/geocol/article/view/31440Universidad Nacional de Colombia Revistas electrónicas UN Geología ColombianaGeología ColombianaGeología Colombiana - An International Journal on Geosciences; Vol. 22 (1997); 3-25 Geología Colombiana; Vol. 22 (1997); 3-25 2357-3767 0072-0992Kammer, Andreas (1997) Los pliegues del sinclinal de tunja. análisis estructural y modelamiento geométrico. Geología Colombiana - An International Journal on Geosciences; Vol. 22 (1997); 3-25 Geología Colombiana; Vol. 22 (1997); 3-25 2357-3767 0072-0992 .Los pliegues del sinclinal de tunja. análisis estructural y modelamiento geométricoArtículo de revistainfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501http://purl.org/coar/resource_type/c_2df8fbb1http://purl.org/coar/version/c_970fb48d4fbd8a85Texthttp://purl.org/redcol/resource_type/ARTGeologíaCiencias de la tierraGeocienciasTunja SynclineStructural AnalysisGeologíaCiencias de la tierraGeocienciasSinclinal de TunjaAnálisis EstructuralORIGINAL31440-113957-1-PB.pdfapplication/pdf16816706https://repositorio.unal.edu.co/bitstream/unal/41996/1/31440-113957-1-PB.pdf4c59a0922a61e1d1ffeb86d9797ed1b6MD51THUMBNAIL31440-113957-1-PB.pdf.jpg31440-113957-1-PB.pdf.jpgGenerated Thumbnailimage/jpeg8811https://repositorio.unal.edu.co/bitstream/unal/41996/2/31440-113957-1-PB.pdf.jpg2b83948c0204fc213a07ce35862efaf4MD52unal/41996oai:repositorio.unal.edu.co:unal/419962024-02-02 23:07:00.691Repositorio Institucional Universidad Nacional de Colombiarepositorio_nal@unal.edu.co
dc.title.spa.fl_str_mv Los pliegues del sinclinal de tunja. análisis estructural y modelamiento geométrico
title Los pliegues del sinclinal de tunja. análisis estructural y modelamiento geométrico
spellingShingle Los pliegues del sinclinal de tunja. análisis estructural y modelamiento geométrico
Geología
Ciencias de la tierra
Geociencias
Tunja Syncline
Structural Analysis
Geología
Ciencias de la tierra
Geociencias
Sinclinal de Tunja
Análisis Estructural
title_short Los pliegues del sinclinal de tunja. análisis estructural y modelamiento geométrico
title_full Los pliegues del sinclinal de tunja. análisis estructural y modelamiento geométrico
title_fullStr Los pliegues del sinclinal de tunja. análisis estructural y modelamiento geométrico
title_full_unstemmed Los pliegues del sinclinal de tunja. análisis estructural y modelamiento geométrico
title_sort Los pliegues del sinclinal de tunja. análisis estructural y modelamiento geométrico
dc.creator.fl_str_mv Kammer, Andreas
dc.contributor.author.spa.fl_str_mv Kammer, Andreas
dc.subject.proposal.spa.fl_str_mv Geología
Ciencias de la tierra
Geociencias
Tunja Syncline
Structural Analysis
Geología
Ciencias de la tierra
Geociencias
Sinclinal de Tunja
Análisis Estructural
topic Geología
Ciencias de la tierra
Geociencias
Tunja Syncline
Structural Analysis
Geología
Ciencias de la tierra
Geociencias
Sinclinal de Tunja
Análisis Estructural
description The Tunja syncline is located at the northern termination of the Altiplano of the Eastern Cordillera, which constitutes a distinct physiographic province in the central part of the Eastern Cordillera between the cities of Bogota and Tunja. Together with its bordering basement cored anticlines, the Arcabuco and Toca anticline, it belongs to the Cordillera's first-order structures which are characterized by longitudinal continuities of several hundred kms and display, as a further outstanding feature, an eastern vergence. Superposed on this large scale disposition, trains of second-order folds with lengths of 100 km or less form the next important oroqraphlc features. Some structural independence from the basement-cored structures is documented by their vergences which, at least in the Tunja syncline, consistently oppose the first-order dip directions. The fact that they attain higher amplitudes above the steeply inclined segments of the western flank of the Tunja syncline, suggests an origin by gravity sliding. Yet the observed strain pattern does not unambiguously supports a model of simple detachment folds, as a neutral or even extensive regime at a higher structural level gives way to increasingly compressive deformations at low structural levels. These relations argue for a model in which amplification of the folding occurs at the cost of a homogeneous shortening near the basement-cover contact. A linear geometric extrapolation between oberved surficial folds and a supposedly unfolded basement-cover interface predicts a strain pattern, which is in good agreement with the observed deformations. A third-order, small scale folding affects only strata which have been eroded across anticlinal crests. These structures present themselves as flaps or cascade folds with vergences according to the dip direction of the higher order folds. For their origin a gravitational collapse during a latest stage of the folding process may be advocated.
publishDate 1997
dc.date.issued.spa.fl_str_mv 1997
dc.date.accessioned.spa.fl_str_mv 2019-06-28T10:25:57Z
dc.date.available.spa.fl_str_mv 2019-06-28T10:25:57Z
dc.type.spa.fl_str_mv Artículo de revista
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dc.type.driver.spa.fl_str_mv info:eu-repo/semantics/article
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dc.type.coarversion.spa.fl_str_mv http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.content.spa.fl_str_mv Text
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format http://purl.org/coar/resource_type/c_6501
status_str publishedVersion
dc.identifier.uri.none.fl_str_mv https://repositorio.unal.edu.co/handle/unal/41996
dc.identifier.eprints.spa.fl_str_mv http://bdigital.unal.edu.co/32093/
url https://repositorio.unal.edu.co/handle/unal/41996
http://bdigital.unal.edu.co/32093/
dc.language.iso.spa.fl_str_mv spa
language spa
dc.relation.spa.fl_str_mv http://revistas.unal.edu.co/index.php/geocol/article/view/31440
dc.relation.ispartof.spa.fl_str_mv Universidad Nacional de Colombia Revistas electrónicas UN Geología Colombiana
Geología Colombiana
dc.relation.ispartofseries.none.fl_str_mv Geología Colombiana - An International Journal on Geosciences; Vol. 22 (1997); 3-25 Geología Colombiana; Vol. 22 (1997); 3-25 2357-3767 0072-0992
dc.relation.references.spa.fl_str_mv Kammer, Andreas (1997) Los pliegues del sinclinal de tunja. análisis estructural y modelamiento geométrico. Geología Colombiana - An International Journal on Geosciences; Vol. 22 (1997); 3-25 Geología Colombiana; Vol. 22 (1997); 3-25 2357-3767 0072-0992 .
dc.rights.spa.fl_str_mv Derechos reservados - Universidad Nacional de Colombia
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dc.rights.license.spa.fl_str_mv Atribución-NoComercial 4.0 Internacional
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dc.rights.accessrights.spa.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv Atribución-NoComercial 4.0 Internacional
Derechos reservados - Universidad Nacional de Colombia
http://creativecommons.org/licenses/by-nc/4.0/
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
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dc.publisher.spa.fl_str_mv Departamento de Geociencias
institution Universidad Nacional de Colombia
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