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

2010; Geological Society of America; Volume: 122; Issue: 9-10 Linguagem: Inglês

10.1130/b30118.1

1943-2674

Brian K. Horton, Joel E. Saylor, Junsheng Nie, Andrés Mora, Maurício Parra, Andrés Reyes-Harker, Daniel F. Stöckli,

Geological and Geochemical Analysis

Research Article| September 01, 2010 Linking sedimentation in the northern Andes to basement configuration, Mesozoic extension, and Cenozoic shortening: Evidence from detrital zircon U-Pb ages, Eastern Cordillera, Colombia Brian K. Horton; Brian K. Horton † 1Department of Geological Sciences and Institute for Geophysics, Jackson School of Geosciences, University of Texas at Austin, Austin, Texas 78712, USA †E-mail: horton@mail.utexas.edu Search for other works by this author on: GSW Google Scholar Joel E. Saylor; Joel E. Saylor 2Department of Geological Sciences, Jackson School of Geosciences, University of Texas at Austin, Austin, Texas 78712, USA Search for other works by this author on: GSW Google Scholar Junsheng Nie; Junsheng Nie 2Department of Geological Sciences, Jackson School of Geosciences, University of Texas at Austin, Austin, Texas 78712, USA Search for other works by this author on: GSW Google Scholar Andrés Mora; Andrés Mora 3Instituto Colombiano del Petróleo, Ecopetrol, Bucaramanga,Colombia Search for other works by this author on: GSW Google Scholar Mauricio Parra; Mauricio Parra 2Department of Geological Sciences, Jackson School of Geosciences, University of Texas at Austin, Austin, Texas 78712, USA Search for other works by this author on: GSW Google Scholar Andrés Reyes-Harker; Andrés Reyes-Harker 3Instituto Colombiano del Petróleo, Ecopetrol, Bucaramanga,Colombia Search for other works by this author on: GSW Google Scholar Daniel F. Stockli Daniel F. Stockli 4Department of Geology, University of Kansas, Lawrence, Kansas 66045, USA Search for other works by this author on: GSW Google Scholar Author and Article Information Brian K. Horton † 1Department of Geological Sciences and Institute for Geophysics, Jackson School of Geosciences, University of Texas at Austin, Austin, Texas 78712, USA Joel E. Saylor 2Department of Geological Sciences, Jackson School of Geosciences, University of Texas at Austin, Austin, Texas 78712, USA Junsheng Nie 2Department of Geological Sciences, Jackson School of Geosciences, University of Texas at Austin, Austin, Texas 78712, USA Andrés Mora 3Instituto Colombiano del Petróleo, Ecopetrol, Bucaramanga,Colombia Mauricio Parra 2Department of Geological Sciences, Jackson School of Geosciences, University of Texas at Austin, Austin, Texas 78712, USA Andrés Reyes-Harker 3Instituto Colombiano del Petróleo, Ecopetrol, Bucaramanga,Colombia Daniel F. Stockli 4Department of Geology, University of Kansas, Lawrence, Kansas 66045, USA †E-mail: horton@mail.utexas.edu Publisher: Geological Society of America Received: 29 Jun 2009 Revision Received: 05 Nov 2009 Accepted: 05 Nov 2009 First Online: 08 Mar 2017 Online ISSN: 1943-2674 Print ISSN: 0016-7606 © 2010 Geological Society of America GSA Bulletin (2010) 122 (9-10): 1423–1442. https://doi.org/10.1130/B30118.1 Article history Received: 29 Jun 2009 Revision Received: 05 Nov 2009 Accepted: 05 Nov 2009 First Online: 08 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation Brian K. Horton, Joel E. Saylor, Junsheng Nie, Andrés Mora, Mauricio Parra, Andrés Reyes-Harker, Daniel F. Stockli; Linking sedimentation in the northern Andes to basement configuration, Mesozoic extension, and Cenozoic shortening: Evidence from detrital zircon U-Pb ages, Eastern Cordillera, Colombia. GSA Bulletin 2010;; 122 (9-10): 1423–1442. doi: https://doi.org/10.1130/B30118.1 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGSA Bulletin Search Advanced Search Abstract Laser ablation–inductively coupled plasma–mass spectrometry (LA-ICP-MS) analyses of 29 samples from the Eastern Cordillera 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, syndepositional magmatic sources (420–380 Ma), and distal sources of chiefly 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 influence 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. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.