Early Jurassic rift structures associated with the Soapaga and Boyacá faults of the Eastern Cordillera, Colombia: Sedimentological inferences and regional implications

Kammer, Andreas; Sanchez, J.

doi:10.1016/j.jsames.2006.07.006

Cited by 67 publications

(56 citation statements)

References 26 publications

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“…10B). The Central Cordillera contains both intrusive and extrusive magmatic belts (Aspden and McCourt, 1986), including a volcaniclastic component in the San Lucas Range of the northeastern Central Cordillera (Kammer and Sánchez, 2006) (Fig. 1).…”

Section: Discussionmentioning

confidence: 99%

“…The Central Cordillera consists of Mesozoic arc-related rocks (principally Jurassic granodiorite/tonalite and Cretaceous diorite/quartz diorite, but also Lower Cretaceous basalt) developed on a belt of Paleozoic metamorphic rock (McCourt et al, 1984;Aspden et al, 1987). Jurassic-Cretaceous pyroclastic deposits are also reported for the San Lucas range (Kammer and Sánchez, 2006), which forms the northeastern margin of the Central Cordillera (Fig. 1).…”

Section: Regional Tectonic Contextmentioning

confidence: 97%

“…The San Lucas Range along the northwestern margin of the Middle Magdalena Valley Basin (Fig. 1) is a further possible source for volcaniclastic grains ultimately derived from magmatic-arc rocks of principally Mesozoic age from the Central Cordillera (Kammer and Sánchez, 2006). The lack of feldspar content, which is a key component of many magmatic-arc sources (Marsaglia and Ingersoll, 1992), could be due to selective dissolution of feldspar grains during diagenesis (Milliken et al, 1989).…”

Section: Lisama Formationmentioning

confidence: 99%

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Depositional and provenance record of the Paleogene transition from foreland to hinterland basin evolution during Andean orogenesis, northern Middle Magdalena Valley Basin, Colombia

Moreno

Horton

Caballero

et al. 2011

Journal of South American Earth Sciences

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Section: Discussionmentioning

confidence: 99%

Section: Regional Tectonic Contextmentioning

confidence: 97%

Section: Lisama Formationmentioning

confidence: 99%

See 1 more Smart Citation

Depositional and provenance record of the Paleogene transition from foreland to hinterland basin evolution during Andean orogenesis, northern Middle Magdalena Valley Basin, Colombia

Moreno

Horton

Caballero

et al. 2011

Journal of South American Earth Sciences

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“…Deformation is currently expressed as an asymmetric, bivergent orogen with fold-thrust structures directed both to the east and west (Colleta et al, 1990;Dengo and Covey, 1993;Cooper et al, 1995;Mora et al, 2008). The Eastern Cordillera is also the locus of both Mesozoic extension-related and Cenozoic compressionrelated sedimentation (e.g., Kammer and Sanchez, 2006;Bayona et al, 2008). The geology of the northern Eastern Cordillera is dominated by six reverse-fault-bounded blocks.…”

Section: Structural Geologymentioning

confidence: 99%

Discriminating rapid exhumation from syndepositional volcanism using detrital zircon double dating: Implications for the tectonic history of the Eastern Cordillera, Colombia

Saylor

Stöckli

Horton

et al. 2012

Geological Society of America Bulletin

114

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Lag time is the difference between the closure age of a thermochronologic system and the depositional age of host strata. Lag-time analysis of sedimentary basin fi ll provides insight into the exhumation history of adjacent eroded orogens. In a case study of the Paleogene Floresta basin in the Eastern Cordillera fold-thrust belt of Colombia, variations in lag time refl ect changes in both sediment source areas and exhumation patterns. However, near-zero lag times can be produced by either syndepositional volcanism or rapid exhumation. We applied U-Pb geochronology and (U-Th)/He (ZHe) thermochronology to individual zircon grains and identifi ed zircons of volcanic origin as those for which the U-Pb age is within the 2σ uncertainty of their ZHe age. Consistent discrimination of young ZHe ages as the products of either rapid exhumation or volcanism reveals three stages in the history of the northern Andean hinterland. (1) Early to late Paleocene: The appearance of syndepositional and Mesozoic volcanic zircons marks the initial infl ux of magmatic arc detritus. (2) Middle to late Eocene: Near-zero lag times point to rapid, regionally extensive exhumation attributable to thrust-induced uplift of the Magdalena Valley basement. (3) Late Eocene to late Oligocene: Increased lag time is interpreted as recycling of shallowly buried foreland-basin strata possibly due to movement on basinbounding thrust systems. The presence of volcanic zircons with ZHe ages younger than or indistinguishable from the youngest exhumationally cooled zircons underscores the need for double dating to reliably identify volcanic infl uence in detrital thermochronology datasets. These data highlight the utility of double-dated ZHe results for extracting tectonic histories and reliably excluding volcanic zircons from lag-time analysis.

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“…These basementrooted faults (domains DC1&2, Fig. 3B) are interpreted as reactivated normal faults because of the contrasting stratigraphic thickness variations of Paleozoic-Mesozoic successions between structural blocks (Mora et al, 2006;Kammer and Sanchez, 2006). The Llanos foothills area includes the east-verging Guaicaramo fault system, overturned Neogene beds in the adjacent syncline, and low-angle thrust faults at the leading edge of the deformation front.…”

Section: Structure Of the Central Cross Sectionmentioning

confidence: 99%

An integrated analysis of an orogen-sedimentary basin pair: Latest Cretaceous-Cenozoic evolution of the linked Eastern Cordillera orogen and the Llanos foreland basin of Colombia

Bayona¹,

Cortés

Jaramillo

et al. 2008

Geological Society of America Bulletin

146

142

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The integration of restored basin geometry and internal features of syntectonic units (e.g., stratal architecture, thickness, sandstone composition) with fl exural modeling of the lithosphere constrains the evolution of a basin and its fl exural history related to orogenic growth (spatial/temporal loading confi guration). Using this approach, we determined the Maastrichtian-Cenozoic polyphase growth of the Eastern Cordillera of Colombia, an inverted Mesozoic extensional basin. The record of this growth occurs in an Andean (post-middle Miocene) thrust belt (the Eastern Cordillera) and in adjacent foreland basins, such as the Llanos Basin to the east. This approach permitted the identification of fi ve tectono-stratigraphic sequences in the foreland basin and fi ve phases of shortening for the Eastern Cordillera. Thermochronological and geochronological data support the spatial and temporal evolution of the orogen-foreland basin pair. The geometry of tectonic loads, constrained by fl exural models, reveals shortening events of greater magnitude for the uppermost two sequences than for pre-middle Eocene sequences. Tectonic loads for the late Maastrichtian-middle Eocene phases of shortening were less than 3 km high and 100 km wide. For the late Eocene-middle Miocene phase, tectonic loads changed southward from 6 km to less than 4 km, and loads were wider to the north. The strong Andean inversion formed today's Eastern Cordillera structural confi guration and had equivalent tectonic loads of 10-11 km.Integrated analysis is necessary in polyphase orogenic belts to defi ne the spatial and temporal variation of tectonic load and foreland basin confi gurations and to serve studies that seek to quantify exhumation and threedimensional analyses of thrust belts. For the Bayona et al. 1172Geological Society of America Bulletin, September/October 2008 Eastern Cordillera, thermochronological sampling must span the width of the Eastern Cordillera rather than be concentrated in a single range.

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Early Jurassic rift structures associated with the Soapaga and Boyacá faults of the Eastern Cordillera, Colombia: Sedimentological inferences and regional implications

Cited by 67 publications

References 26 publications

Depositional and provenance record of the Paleogene transition from foreland to hinterland basin evolution during Andean orogenesis, northern Middle Magdalena Valley Basin, Colombia

Depositional and provenance record of the Paleogene transition from foreland to hinterland basin evolution during Andean orogenesis, northern Middle Magdalena Valley Basin, Colombia

Discriminating rapid exhumation from syndepositional volcanism using detrital zircon double dating: Implications for the tectonic history of the Eastern Cordillera, Colombia

An integrated analysis of an orogen-sedimentary basin pair: Latest Cretaceous-Cenozoic evolution of the linked Eastern Cordillera orogen and the Llanos foreland basin of Colombia

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