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| DOI | 10.1016/j.tecto.2019.228276 |
| Episodic out-of-sequence deformation promoted by Cenozoic fault reactivation in NW Argentina | |
| Payrola P.; del Papa C.; Aramayo A.; Pingel H.; Hongn F.; Sobel E.R.; Zeilinger G.; Strecker M.R.; Zapata S.; Cottle J.; Salado Paz N.; Glodny J. | |
| 发表日期 | 2020 |
| ISSN | 00401951 |
| 卷号 | 776 |
| 英文摘要 | The Central Andes are the product of contractional deformation related to subduction of the Nazca plate beneath the South American continent. In this geodynamic setting, thrust belt propagation in the Central Andean retroarc in NW Argentina and southern Bolivia has been linked with the critical wedge model implying progressive eastward migration of the deformation front during the Cenozoic. However, Eocene unconformities and growth strata within the orogenic hinterland of the Eastern Cordillera and Puna Plateau suggest selective reactivation of pre-Andean and Andean faults revealing a pattern of diachronous and spatially disparate range uplifts. The Calchaquí Valley in NW Argentina is characterized by basin-and-range morphology, which is intimately linked with the heterogeneous Neoproterozoic basement, Cretaceous rift structures, and the Cenozoic foreland. In this study, we analyze this complex deformation by reconstructing Cenozoic fault reactivation and sedimentation patterns in the Eastern Cordillera. Detailed structural mapping along the eastern Calchaquí border (Tonco area) reveals five Cenozoic unconformities in the former foreland deposits related to multiple episodes of fault reactivation during the Eocene-to-Pleistocene. A refined chronostratigraphy (U-Pb zircon), new AHe thermochronological data (apatite U-Th-Sm/He), and existing evidence for deformation indicate episodic out-of-sequence deformation and increased Eo-Oligocene (Puna Plateau) to Miocene (Eastern Cordillera) fault displacement apparently controlled by pre-Cenozoic heterogeneities. The coeval eastward propagation of deformation and continuing deformation in the west generally challenge the applicability of the critical wedge model. © 2019 Elsevier B.V. |
| 关键词 | Apatite U-Th/He thermochronologyBasement-involved faults and non-systematic propagation of deformationCentral AndesEastern CordilleraEocene-to-Miocene multiple fault reactivationsNW ArgentinaOrogenic WedgeSalta (Payogastilla) forelandStructural geologyU-Pb geochronologyU-Pb zircon geochronologyUnconformities |
| 英文关键词 | Apatite; Binary alloys; Buildings; Deformation; Geochronology; Lead alloys; Silicate minerals; Structural geology; Uranium alloys; Zircon; Argentina; Central Andes; Eastern Cordillera; Multiple faults; Orogenic wedge; Salta (Payogastilla) foreland; U-Pb geochronology; U-pb zircon geochronologies; U-Th/He thermochronology; Unconformities; Geodynamics; apatite; basement rock; Cenozoic; deformation; Eocene; fault zone; foreland basin; Miocene; structural geology; thermochronology; thorium; unconformity; uranium; zircon; Andes; Argentina; Cordillera Oriental [Andes] |
| 语种 | 英语 |
| 来源期刊 | Tectonophysics
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/207842 |
| 作者单位 | Instituto de Bio y Geociencias del NOA (IBIGEO), CONICET-Universidad Nacional de Salta, Av. Bolivia 5150, Salta, 4400, Argentina; CICTERRA-F.C.E.FyN., CONICET-Universidad Nacional de Córdoba, Av. Vélez Sarsfield 1611, Córdoba, X5016GCA, Argentina; Institut für Geowissenschaften, Universität Potsdam, Karl-Liebknecht-Str. 24-25, Potsdam, 14476, Germany; Department of Earth Science and Earth Research Institute, University of California, Santa Barbara, CA 93106, United States; GFZ German Research Centre for Geosciences, Telegrafenberg, Building B, Potsdam, 14473, Germany |
| 推荐引用方式 GB/T 7714 | Payrola P.,del Papa C.,Aramayo A.,et al. Episodic out-of-sequence deformation promoted by Cenozoic fault reactivation in NW Argentina[J],2020,776. |
| APA | Payrola P..,del Papa C..,Aramayo A..,Pingel H..,Hongn F..,...&Glodny J..(2020).Episodic out-of-sequence deformation promoted by Cenozoic fault reactivation in NW Argentina.Tectonophysics,776. |
| MLA | Payrola P.,et al."Episodic out-of-sequence deformation promoted by Cenozoic fault reactivation in NW Argentina".Tectonophysics 776(2020). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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