Migration of Cenozoic deformation in the Eastern Cordillera of Colombia interpreted from fission track results and structural relationships: Implications for petroleum systems

Mora, Andrés; Horton, Brian K.; Mesa, Andrés de; Rubiano, Jorge; Ketcham, Richard A.; Parra, Maurício; Blanco, Vladimir; Garcia, Daniela Ribeiro Ney; Stöckli, Daniel F.

doi:10.1306/01051009111

Cited by 115 publications

(128 citation statements)

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“…We present new data (11 samples) from the Gibraltar region, in addition to previously published data (14 samples; Mora et al, 2010a) for the Piedemonte area (see Fig. 2 for location).…”

Section: Methodsmentioning

confidence: 82%

“…Initial thermal path constraints were placed based on stratigraphic information with preceding unroofing and present-day mean annual surface temperature. Intermediate constraints describing postdepositional burial and unroofing were added as needed to allow simultaneous fitting of low-annealing-resistance and high-annealing-resistance AFT populations (e.g., Mora et al, 2010a); in all cases, the smallest number of constraints was used that allowed fitting of the data. Intermediate nodes on time-temperature paths were generated using the "gradual" option in HeFTy, and in various cases maximum heating or cooling rates of 5 °C/m.y.…”

Section: Methodsmentioning

confidence: 99%

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Formation of passive-roof duplexes in the Colombian Subandes and Perú

et al. 2014

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Passive-roof duplexes are important features for accommodating shortening in active orogens, but their occurrences have been previously demonstrated only with significant subsurface data or after their exhumation. In this study, we describe a series of thin-skinned passive-roof duplexes along the Subandean front in Colombia and compare them with potential analogues in southern Peru. We suggest type localities for this structural style, which display conditions favorable for formation of these structures. It appears that passive-roof duplexes in the Subandean zones are mostly late Miocene features. Our main data for placing temporal and thermokinematic constraints on their development are 25 apatite fission-track (AFT) analyses, including track-length distributions. We show that these areas require high shortening, surface erosion, and downstream sedimentation rates at the time of their formation, as well as two distinct low-friction detachments. These features, which have been previously described by analog models, appear to have been conditioned by a phase of late Miocene topographic growth and denudation in the hinterland and subsequent increase in accommodation as well as sedimentation rates in the foreland.

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“…We present new data (11 samples) from the Gibraltar region, in addition to previously published data (14 samples; Mora et al, 2010a) for the Piedemonte area (see Fig. 2 for location).…”

Section: Methodsmentioning

confidence: 82%

Section: Methodsmentioning

confidence: 99%

Formation of passive-roof duplexes in the Colombian Subandes and Perú

et al. 2014

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“…The South America colonization and subsequent diversification may be expected to be a recent event. The central and Northern Andes deformation reach its current extension by late Oligocene to early Miocene (Oncken et al, 2006;Mora et al, 2010), providing a physiographic landscape similar to its present-day conformation. Therefore, the vicariant events associated to squirrel diversification in South America must be related to glacial cycles as has been suggested for the Mesoamerican Sciurus species (Villalobos, 2013).…”

Section: Discussionmentioning

confidence: 95%

Evolución de las ardillas arborícolas mesoamericanas (Rodentia: Sciuridae): un análisis filogenético molecular

Villalobos

Gutiérrez‐Espeleta

2014

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Abstract:The tribe Sciurini comprehends the genera Sciurus, Syntheosiurus, Microsciurus, Tamiasciurus and Rheinthrosciurus. The phylogenetic relationships within Sciurus have been only partially done, and the relationship between Mesoamerican species remains unsolved. The phylogenetic relationships of the Mesoamerican tree squirrels were examined using molecular data. Sequence data publicly available (12S, 16S, CYTB mitochondrial genes and iRBP nuclear gene) and cytochrome B gene sequences of four previously not sampled Mesoamerican Sciurus species were analyzed under a Bayesian multispecies coalescence model. Phylogenetic analysis of the multilocus data set showed the neotropical tree squirrels as a monophyletic clade. The genus Sciurus was paraphyletic due to the inclusion of Microsciurus species (M. alfari and M. flaviventer). The South American species S. aestuans and S. stramineus showed a sister taxa relationship. Single locus analysis based on the most compact and complete data set (i.e. CYTB gene sequences), supported the monophyly of the South American species and recovered a Mesoamerican clade including S. aureogaster, S. granatensis and S. variegatoides. These results corroborated previous findings based on cladistic analysis of cranial and post-cranial characters. Our data support a close relationship between Mesoamerican Sciurus species and a sister relationship with South American species, and corroborates previous findings in relation to the polyphyly of Microsciurus and Syntheosciurus' paraphyly. Rev. Biol. Trop. 62 (2): 649-657. Epub 2014 June 01.

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“…El acortamiento Cenozoico dio lugar a una cuenca foreland sobre el Valle del Magdalena, Cordillera Oriental y cuenca Llanos Saylor et al, 2011), la cual posteriormente se particionó en pequeños bloques levantados y rellenados con depósitos sin-orogénicos (Bayona et al, 2013), definiendo el levantamiento y actual configuración de la Cordillera Oriental (FIGURA 2) (Dengo y Covey, 1993;Saylor et al, 2012;Mora et al, 2010). Jiménez et al (2014) sugieren que la curvatura al norte de la Cordillera Oriental está relacionada con un orógeno primario y a movimientos destrales en la zona axial.…”

Section: Marco Geológico: Cordillera Orientalunclassified