A COMMENT ON “The Quebradagrande Complex: A Lower Cretaceous ensialic marginal basin in the Central Cordillera of the Colombian Andes” by Nivia et al.

Restrepo, Jorge Julián; Ordóñez-Carmona, Oswaldo; Moreno-Sánchez, Mario

doi:10.1016/j.jsames.2009.03.004

Cited by 10 publications

(6 citation statements)

References 6 publications

(8 reference statements)

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“…The Santa Bárbara Batholith, which is located to the east of Palmira, is frequently cited as a Triassic intrusion that crosscuts the rocks of the Arquía Complex. Recently, these rocks were included as Paleogene bodies in the Geological Map of Colombia (Gómez et al, 2015), which is consistent with the arguments presented by Restrepo et al (2009). Radiometric data suggest that a substantial amount of these rocks were metamorphosed or thermally affected around the Early Cretaceous, indicating that the ages of lithologies and their protoliths are not yet well established (Moreno-Sánchez et al, 2008).…”

Section: Arquía Complexsupporting

confidence: 73%

Chapter 1

SGC¹

2019

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The Cauca River valley is a Cenozoic intermountain basin with a tectonic history characterized by the alternation between compressional and extensional phases. Here, two new radiometric ages of La Paila Formation (10.5 ± 0.4 Ma and 4.4 ± 0.07 Ma Ar/Ar in amphibole) are used as a reference to deduce the tectonic events that occurred in the Miocene -Quaternary interval. The Miocene -Pliocene La Paila Formation is a continental unit deposited during an initial extensional phase under the influence of arc volcanism and a compressional final stage. The overlying units, i.e., the Pleistocene Zarzal Formation and Quaternary deposits, record the compressive tectonic activity that started after the formation of the Panamá Isthmus. The current deformation is registered in the Buga Salient by a series of west-vergent thrust faults that are narrowing the present Cauca River valley. This salient is proposed as the western termination of the Ibagué Fault. The most recent manifestations of this deformation are the folds on Quaternary alluvial fans, which involve Holocene paleosols, and the liquefaction of the deposits of the Zarzal Formation, which affects the overlying Quaternary deposits. On the Western Cordillera, a predominantly transcurrent tectonic style characterizes the recent deformation. It is proposed that the structure of the most recent deformation has occurred due to the indentation of a shallow continental wedge that has been introduced below the Cretaceous basement of the valley.

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Section: Arquía Complexsupporting

confidence: 73%

Chapter 1

SGC¹

2019

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“…Isolated basement exposures in the Eastern Cordillera (Floresta, Quetame, Garzon, and Santander massifs) and northern coastal zone of Colombia (Sierra Nevada de Santa Marta and Guajira massifs) consist of gneissic and granitic rocks, many exhibiting ages between ~1200 Ma and ~900 Ma (Irving, 1975;Kroonenberg, 1982;Priem et al, 1989;Restrepo-Pace et al, 1997;Cordani et al, 2005;Cardona Molina et al, 2006;Jiménez Mejía et al, 2006;Ordóñez-Carmona et al, 2006;Cardona et al, 2010). Although partially composed of accreted material, the poorly understood basement of the Central Cordillera includes low-to highgrade metamorphic rocks and limited igneous rocks yielding primarily Devonian and Permian ages with possible inheritance from Mesoproterozoic and Neoproterozoic protoliths (Restrepo-Pace, 1992;Vinasco et al, 2006;Restrepo et al, 2009).…”

Section: Regional Overviewmentioning

confidence: 99%

“…These igneous rocks intrude and overlap a Paleozoic metamorphic belt of mostly low-to medium-grade rocks (Cajamarca complex) yielding metamorphic ages concentrated at 410-380 Ma and 300-250 Ma (McCourt et al, 1984;Ordóñez-Carmona et al, 2006;Vinasco et al, 2006 and references therein), with limited suggestions of Cretaceous-Paleocene metamorphism (Restrepo et al, 2008(Restrepo et al, , 2009. Additional magmatic episodes are represented by intrusion ages of 240-210 Ma (Santa Barbara batholith, Amagá stock, and other granites; Irving, 1975;McCourt et al, 1984; but see Restrepo et al, 2009 for an alternative interpretation), and 160 Ma and 95-80 Ma (Ibague batholith, Antioquia batholith, and Altavista stock; Correa et al, 2006;Ibañez-Mejía et al, 2007;Villa gómez et al, 2008). U-Pb data from Vinasco et al (2006) demonstrate inheritance of scattered Mesoproterozoic and Neoproterozoic zircons, consistent with Precambrian basement underlying the eastern fl ank of the Central Cordillera (e.g., Aleman and Ramos, 2000;Cardona et al, 2010).…”

Section: Potential Sediment Sourcesmentioning

confidence: 99%

Linking sedimentation in the northern Andes to basement configuration, Mesozoic extension, and Cenozoic shortening: Evidence from detrital zircon U-Pb ages, Eastern Cordillera, Colombia

Horton¹,

Saylor²,

Nie³

et al. 2010

Geological Society of America Bulletin

179

161

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Laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) analyses of 29 samples from the EasternCordillera of Colombia reveal the origin of northern Andean basement and patterns of sedimentation during Paleozoic subsidence, Jurassic-Early Cretaceous extension, Late Cretaceous postrift subsidence, and Cenozoic shortening and foreland-basin evolution. U-Pb geochronological results indicate that presumed Precambrian basement is mainly a product of early Paleozoic magmatism (520-420 Ma) potentially linked to subduction and possible collision. Inherited zircons provide evidence for Mesoproterozoic tectonomagmatic events at 1200-1000 Ma during Grenville-age orogenesis. Detrital zircon U-Pb ages for Paleozoic strata show derivation from Andean basement, syn depositional magmatic sources (420-380 Ma), and distal sources of chiefl y Mesoproterozoic basement (1650-900 Ma) in the Amazonian craton (Guyana shield) to the east or in possible continental terranes along the western margin of South America. Sedimentation during Jurassic-Early Cretaceous rifting is expressed in detrital zircon age spectra as Andean basement sources, recycled Paleozoic contributions, and igneous sources of Carboniferous-Permian (310-250 Ma) and Late Triassic-Early Jurassic (220-180 Ma) origin. Detrital zircon provenance during continued Cretaceous extension and postrift thermal subsidence recorded the elimination of Andean basement sources and increased infl uence of craton-derived drainage systems providing mainly Paleoproterozoic and Mesoproterozoic (2050-950 Ma) grains. By Eocene time, zircons from the Guyana shield (1850-1350 Ma) dominated the detrital signal in the easternmost Eastern Cordillera. In contrast, coeval Eocene deposits in the axial Eastern Cordillera contain Late Cretaceous-Paleocene (90-55 Ma), Jurassic (190-150 Ma), and limited Permian-Triassic (280-220 Ma) zircons recording initial uplift and exhumation of principally Mesozoic magmatic-arc rocks to the west in the Central Cordillera. Oligocene-Miocene sandstones of the proximal Llanos foreland basin document uplift-induced exhumation of the Eastern Cordillera fold-thrust belt and recycling of the Paleogene cover succession rich in both arc-derived detritus (dominantly 180-40 Ma) and shield-derived sediments (mostly 1850-950 Ma). Late Miocene-Pliocene erosion into the underlying Cretaceous section is evidenced by elimination of Mesozoic-Cenozoic zircons and increased proportions of 1650-900 Ma zircons emblematic of Cretaceous strata.

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“…These rocks are in tectonic contact with a belt of garnetbearing amphibolites, peridotites, and stratified dunites east of Medellín (see location in Fig. 3b), which represent remnants of an ophiolitic suite of possible Permian age (Restrepo, 2003;Martens and Dunlap, 2003;Restrepo et al, 2009), reworked during the Triassic break-up event (Restrepo et al, 2009). Kinematic indicators of the foliated amphibolites show a vergence to the northeast (Pereira et al, 2006).…”

Section: Grenvillian Terranes Left In South America After Pangea Breamentioning

confidence: 99%

“…The outline of the Tahami terrane was prepared taken in consideration the premises of Restrepo et al (2008Restrepo et al ( , 2009. It is interpreted as a piece of a Laurentian derived terrane, associated with the magmatic arc developed in some of the Mexican and Central America Terranes, probably with Grenvillian affinities.…”

Section: Grenvillian Terranes Left In South America After Pangea Breamentioning

confidence: 99%