Evidence for multiple Plio-Pleistocene lake episodes in the hyperarid Atacama Desert
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| Title: | Main Title: Evidence for multiple Plio-Pleistocene lake episodes in the hyperarid Atacama Desert |
| Description: | Abstract: Cosmogenic nuclide exposure dating of ancient shoreline terraces of the Quillagua-Llamara Soledad Lake in the central Atacama Desert of northern Chile provides new insights in the paleohydrology of the driest desert on Earth. The lake developed in a paleo-endorheic drainage system in the Central Depression prior to draining into the Pacific due to incision of the Río Loa canyon. The durations of lake stages were sufficiently long to form wave-erosion induced shoreline terraces on the wind-exposed slopes of former islands. Successively younger shoreline levels are preserved over an elevation range of 250 m due to progressive uplift of the islands coeval with the lake stages. Cosmogenic 10Be- and 21Ne-derived exposure ages of the shorelines reveals that the hyperarid conditions in the Río Loa catchment were interspersed by several pluvial stages during the Pliocene and Pleistocene, which generated a large and persistent lake in the Quillagua-Llamara basin. The exposure ages of the final lake stage provide the maximum age for the incision of the Río Loa canyon (274 ± 74 ka) and the subsequent breaching of the Coastal Cordillera. |
| Identifier: | 10.1016/j.quageo.2017.11.002 (DOI) |
Responsible Party
| Creators: | Benedikt Ritter (Author), Steven Binnie (Author), Finlay Stuart (Author), Volker Wennrich (Author), Tibor Dunai (Author) |
| Publisher: | Elsevier Science, Amsterdam, The Netherlands |
| Publication Year: | 2019 |
Topic
| CRC1211 Topic: | Climate |
| Related Subproject: | A2 |
| Subject: | Keyword: Cosmogenic Nuclides |
File Details
| Filename: | Ritter_et_al_2018_Quat_Geochron.pdf |
| Data Type: | Text - Article |
| File Size: | 2.1 MB |
| Date: | Available: 24.11.2017 |
| Mime Type: | application/pdf |
| 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: | None |
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Specific Information - Publication
| Publication Status: | Accepted |
| Review Status: | Peer reviewed |
| Publication Type: | Article |
| Article Type: | Journal |
| Source: | Quaternary Geochronology |
| Volume: | 44 |
| Number of Pages: | 12 (1 - 12) |
Metadata Details
| Metadata Creator: | Benedikt Ritter |
| Metadata Created: | 19.06.2019 |
| Metadata Last Updated: | 19.06.2019 |
| Subproject: | A2 |
| Funding Phase: | 1 |
| Metadata Language: | English |
| Metadata Version: | V50 |
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| Page Visits: | 292 |
| Metadata Downloads: | 0 |
| Dataset Downloads: | 1 |
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