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  • 1
    Online Resource
    Online Resource
    The Evolution of the Chilean-Argentinean Andes (2018)
    Cham : Springer
    Details Availability
    Keywords: Earth sciences ; Earth Sciences ; Geology ; Physical geography ; Geomorphology ; Earth sciences ; Geology ; Physical geography ; Geomorphology ; Anden ; Argentinien ; Chile ; Falten- und Überschiebungsgürtel ; Faltengebirge ; Geologie ; Anden ; Historische Geologie ; Känozoikum ; Mesozoikum ; Paläozoikum ; Tektonik ; Anden Süd ; Neotektonik ; Orogenese ; Paläotektonik ; Inselbogen ; Anden ; Argentinien ; Chile ; Falten- und Überschiebungsgürtel ; Faltengebirge ; Geologie ; Anden ; Historische Geologie ; Känozoikum ; Mesozoikum ; Paläozoikum ; Tektonik ; Anden Süd ; Neotektonik ; Orogenese ; Paläotektonik ; Inselbogen
    Description / Table of Contents: Preface.- 1.Crustal structure and tectonics of the Chilean continental margin from wide-angle seismic studies: a review -- 2. Crustal and thermal structure along the Chilean subduction margin from gravity data and their relation to short and long term segmentation: a review -- 3. The Peru-Chile margin revisited with global gravity field derivatives -- 4.The Pre-Andean phases of construction of the Southern Andes basement -- 5. The geometry of the subduction margin from paleomagnetic data: a review -- 6. The early stages of the volcanic arc in the Southern Andes -- 7. The early orogeny stages in the Southern Central and Patagonian Andes -- 8.The Mesozoic to Cenozoic structure and tectonic evolution of the Southern Patagonian Andes.-9. Andean and foreland Cenozoic sources during mountain growth evolution -- 10. The Cenozoic structure and tectonic evolution of the Southern Central Andes -- 11. The Cenozoic structure and tectonic evolution of the Northern Patagonian Andes -- 12. The origin of the Neogene transgressions during the Andean development -- 13. Landscape and tectonics of the Central Chilean Andes -- 14. Landscape and tectonics of the Northern Chilean Andes -- 15. The Neogene volcanic arc from the southern Altiplano to the Southern Central Andes.-16. Dynamic subsidence and uplift associated with the Pampean flat subduction zone -- 17.Thermal structure associated with the Pampean flat subduction zone -- 18. Architecture and evolution of the volcanic arc in the last 5 Ma along the Southern Central and Patagonian Andes -- 19.The late segmentation of the Southern Andes as a function of ocean bathymetry.
    Type of Medium: Online Resource
    Pages: Online-Ressource (XXV, 564 p. 166 illus., 162 illus. in color, online resource)
    ISBN: 9783319677743
    Series Statement: Springer Earth System Sciences
    URL: https://doi.org/10.1007/978-3-319-67774-3
    URL: http://dx.doi.org/10.1007/978-3-319-67774-3
    DOI: 10.1007/978-3-319-67774-3
    Language: English
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  • 2
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    Middle Miocene-Early Pliocene contraction in the Chos Malal fold-and-thrust belt (Neuquén Basin, Argentina): Insights from structural analysis and apatite fission-tracks thermochronology (2017)
    Wiley-Blackwell
    In: Tectonics
    Details
    Publication Date: 2017-09-13
    Description: In the southern Central Andes at 37-38 °S latitude, the Chos Malal fold-and-thrust belt (FTB), which results from the Late Cretaceous closure of the Neuquén Basin, has generated increasing interest because of its potential for hydrocarbon exploration. Using detailed field mapping, seismic reflection and well data analysis, cross-section balancing, and detrital apatite fission-track thermochronology from 18 samples distributed along the FTB, we bring new quantitative constraints on the chronology of the Neogene structural development of the Chos Malal FTB. Our dataset reveals that extensive tectonically-driven exhumation through basement-involved thrusting, occurred at ~15-7 Ma in both the inner and outer sectors of the FTB. This age range is corroborated by indirect dating of the Chos Malal Formation, a syntectonic unit also deformed after deposition, which we find was deposited after 7.2 Ma ± 1.6 / 2.0 Ma, an age much younger than the Miocene age it was previously assigned. We document for the first time an Early Pliocene rapid cooling stage that was ongoing ~ 5.5 to 5.1 Ma ago in the interior of the orogenic wedge, which we attribute to out-of-sequence thrusting along basement-involved thrust faults bounding the Cordillera del Viento, driving the surface uplift of this prominent topographic feature. Finally, our sequential reconstruction of the thick and thin-skinned structures of the Chos Malal FTB shows that most of the horizontal shortening was accommodated after the Middle Miocene, which we thus consider as being the main phase of orogenic building in this sector of the Andes.
    Print ISSN: 0278-7407
    Electronic ISSN: 1944-9194
    Topics: Geosciences
    Published by Wiley-Blackwell on behalf of American Geophysical Union (AGU).
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