The Guanillos fan complex – implications for the morphogenesis of Atacama’s coastal alluvial fans

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Title:Main Title: The Guanillos fan complex – implications for the morphogenesis of Atacama’s coastal alluvial fans
Description:Abstract: Compared to the interior alluvial fans at the western piedmont of the Andes in northern Chile the coastal alluvial fans emerging from the Coastal Cordillera to the Pacific Ocean are younger and more active. However, neither the dependency of their evolution on climatic and tectonic controls, nor the frequency and magnitude of the primary constructing processes are as yet well understood. To fill this gap, detailed investigations were carried out at an alluvial fan complex at Guanillos (70°10.5’ W, 21°58’ S). The complex represents a multi-phased sedimentary system situated within the latitudinal core of the hyperarid Atacama Desert. Characterization and parametrization of the micro- to mesoscale surface morphology enables a morphostratigraphic distinction between six to seven fan generations. Combined with first 10Be exposure, 14C, and OSL ages, a preliminary absolute morphochronology of the Guanillos alluvial fan is provided. Finally, based on the correlation between the newly established morphochronology and published palaeoenvironmental proxies, driving controls for the coastal alluvial fan activity shall be deciphered.
Responsible Party
Creators:Janek Walk (Author), Melanie Bartz (Author), Georg Stauch (Author), Helmut Brückner (Author), Frank Lehmkuhl (Author)
Funding Reference:Deutsche Forschungsgemeinschaft (DFG): CRC 1211: Earth - Evolution at the Dry Limit
Publisher:CRC1211 Database (CRC1211DB)
Publication Year:2018
Topic
CRC1211 Topic:Surface
Related Subproject:C2
Subjects:Keywords: Geomorphology, Remote Sensing, Geochronology, Luminescence Dating, Cosmogenic Nuclides, Radiocarbon Dating
Geogr. Information Topic:Environment
File Details
Filename:Poster_CECGQS_2018_The_Guanillos_fan_complex.pdf
Data Type:Text - Text
File Size:28.1 MB
Date:Available: 28.09.2018
Mime Type:application/pdf
Data Format:PDF
Language:English
Status:Completed
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Download Permission:Only Project Members
General Access and Use Conditions:According to the CRC1211DB data policy agreement.
Access Limitations:According to the CRC1211DB data policy agreement.
Licence:[CRC1211DB] Data policy agreement
Geographic
Specific Information - Presentation
Presenter:Janek Walk
Presentation Date:24th of September, 2018
Presentation Type:Poster
Event:Central European Conference on Geomorphology and Quaternary Sciences
Event Type:Conference
Event Location:Giessen
Event Duration:23rd of September, 2018 - 27th of September, 2018
Event Website:https://www.uni-giessen.de/fbz/fb07/fachgebiete/geographie/bereiche/physisch/akg-deuqua2018
Metadata Details
Metadata Creator:Janek Walk
Metadata Created:28.09.2018
Metadata Last Updated:28.09.2018
Subproject:C2
Funding Phase:1
Metadata Language:English
Metadata Version:V50
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