Eastward extent of the Late Eocene–Early Oligocene onset of deformation across the northern Andes: constraints from the northern portion of the Eastern Cordillera fold belt, Colombia

Corredor, Freddy

doi:10.1016/j.jsames.2003.06.002

Cited by 33 publications

(27 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…1) has been interpreted as growth strata related to folding and the resultant creation of subdued topography (Gomez et al, 2005). Finally, along the northeastern margin of the Eastern Cordillera, subsurface data have been used to infer late Eocene to late Oligocene thinskinned deformation (Corredor, 2003;Martinez, 2006). However, the surhcial sedimentological and structural expression of this inferred deformation episode remains ambiguous.…”

Section: Tectonic Setting and Geological Backgroundmentioning

confidence: 99%

Orogenic wedge advance in the northern Andes: Evidence from the Oligocene-Miocene sedimentary record of the Medina Basin, Eastern Cordillera, Colombia

Parra

Mora

Jaramillo

et al. 2009

Geological Society of America Bulletin

127

148

View full text Add to dashboard Cite

Section: Tectonic Setting and Geological Backgroundmentioning

confidence: 99%

Orogenic wedge advance in the northern Andes: Evidence from the Oligocene-Miocene sedimentary record of the Medina Basin, Eastern Cordillera, Colombia

Parra

Mora

Jaramillo

et al. 2009

Geological Society of America Bulletin

127

148

View full text Add to dashboard Cite

“…Reactivated Mesozoic normal faults, such as the Guaicaramo fault system in the central Llanos foothills, have been considered to be the major boundary of those structural styles. Models of inversion tectonics have been created for the southern segment of the Eastern Cordillera and Llanos foothills (Casero et al, 1997;Rowan and Linares, 2000;Branquet et al, 2002;Restrepo-Pace et al, 2004;Toro et al, 2004;Cortés et al, 2006a;Mora et al, 2006), in the central segment of the Eastern Cordillera and Llanos foothills (Colleta et al, 1990;Dengo and Covey, 1993;Cooper et al, 1995;Cazier et al, 1995;Roeder and Chamberlain, 1995;Rathke and Coral, 1997;FajardoPeña, 1998;Taboada et al, 2000;SarmientoRojas, 2001;Rochat et al, 2003;Toro et al, 2004;Martinez, 2006;Mora et al, 2006), and in the northern segment of the Eastern Cordillera and Llanos foothills (Chigne et al, 1997;Corredor, 2003;Villamil et al, 2004). Although structural models differ both in the angle and depth of detachment of the Guaicaramo fault system and in fault involvement of crystalline basement to the east, structural restorations from the axial zone of the Eastern Cordillera and Llanos Basin are similar (Fig.…”

Section: Regional Tectonic Setting Of the Eastern Cordilleramentioning

confidence: 99%

“…1B) has been interpreted as a progressive unconformity that has been growing since the late Paleocene (Julivert, 1963). In the northern Llanos foothills and Llanos Basin, Corredor (2003) and Cortés et al (2006b) reported growth-strata patterns in Oligocene-Miocene strata. In the central Llanos foothills, Rathke and Coral (1997) and Martinez (2006) suggested the incipient development of broad fault-related anticlines and synorogenic deposition during the Oligocene.…”

Section: Evidence Of Pre-neogene Deformationmentioning

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

View full text Add to dashboard Cite

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.

show abstract

“…(Cont.) Willett 1998, Willett 1999, Corredor 2003, Duerto et al 2006, Sarmiento et al 2006). Compared to the other fold-and-thrust belts of the Andean Cordillera, these along the Precordillera-Sierras Pampeanas range are of exceptional characteristics in their horizontal compressive stress (σ 1 ), although tensional stress state in the western Precordillera fold-and-thrust belts (Alonso et al 2008) of south central Andes, northern Andes , and southernmost Andes (Islam and Hayashi 2008b) is well documented.…”

Section: Figurementioning

confidence: 99%

Cohesive strength and seismogenic stress pattern along the active basement faults of the Precordillera-Sierras Pampeanas ranges, western Argentina: An experimental analysis by means of numerical model

Islam

2009

J. Mt. Sci.

View full text Add to dashboard Cite

A two-dimensional finite element method (FEM) model that incorporates faults, elastic rock physical properties, topographical load due to gravity and far-field plate velocity boundary conditions was used to recognize the seismogenic stress state along the fold-and-thrust belt of the Precordillera-Sierras Pampeanas ranges of western Argentina. A plane strain model with nine experiments was presented here to examine the fault strength with two major rock phyical properties: cohesion and angle of internal friction. Mohr-Coulomb failure criterion with bulk rock properties were applied to analyse faults. The stress field at any point of the model was assumed to be comprised of gravitational and tectonic components. The analysis was focused to recognize the seismogenic shear strain concentrated in the internal-cristaline domain of the orogene shown by the modeling. Modeling results are presented in terms of four parameters, i. e., (i) distributions, orientations, and magnitudes of principal stresses (σ1 and σ3), (ii) displacement vector, (iii) strain distribution, and (iv) maximum shear stress (τmax) contour line within the model. The simulation results show that the compressive stress is distributed in and around the fault systems. The overall orientation of σ1 is in horizontal directions, although some stress reorientations do occur within weaker parts, especially subsequent to the faults. A large-scale shear stress is accumulating along the active faults of Tapias-Villicum Fault (TVF), Salinas-Berros Fault (SBF), Ampacama-Niquizanga Fault (ANF) and Las Charas Fault (CF), which could act as local stress and strain modulators to localize the earthquakes occurrence.

show abstract

Eastward extent of the Late Eocene–Early Oligocene onset of deformation across the northern Andes: constraints from the northern portion of the Eastern Cordillera fold belt, Colombia

Cited by 33 publications

References 13 publications

Orogenic wedge advance in the northern Andes: Evidence from the Oligocene-Miocene sedimentary record of the Medina Basin, Eastern Cordillera, Colombia

Orogenic wedge advance in the northern Andes: Evidence from the Oligocene-Miocene sedimentary record of the Medina Basin, 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

Cohesive strength and seismogenic stress pattern along the active basement faults of the Precordillera-Sierras Pampeanas ranges, western Argentina: An experimental analysis by means of numerical model

Contact Info

Product

Resources

About