The Guanillos fan complex – implications for the morphogenesis of Atacama’s coastal alluvial fans
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Identification
| 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: | |
| Language: | English |
| Status: | Completed |
Constraints
| 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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| Page Visits: | 414 |
| Metadata Downloads: | 0 |
| Dataset Downloads: | 3 |
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