Salts as proxies for water-soil interaction in the hyperarid Atacama Desert ...
The Atacama Desert is the oldest and driest non-polar desert on Earth, where salts have accumulated through atmospheric deposition over millions of years of hyperaridity. These salts can serve as an indicator to provide an understanding of the interaction between water and soil in changing environme...
Main Authors: | , , , , , |
---|---|
Format: | Text |
Language: | English |
Published: |
Deutsche Geologische Gesellschaft - Geologische Vereinigung e.V. (DGGV)
2023
|
Subjects: | |
Online Access: | https://dx.doi.org/10.48380/zgaw-zj51 https://www.dggv.de/e-publikationen/salts-as-proxies-for-water-soil-interaction-in-the-hyperarid-atacama-desert |
id |
ftdatacite:10.48380/zgaw-zj51 |
---|---|
record_format |
openpolar |
spelling |
ftdatacite:10.48380/zgaw-zj51 2024-01-28T10:08:45+01:00 Salts as proxies for water-soil interaction in the hyperarid Atacama Desert ... Arens, Felix Leo Airo, Alessandro Feige, Jenny Sager, Christof Wiechert, Uwe Schulze-Makuch, Dirk 2023 https://dx.doi.org/10.48380/zgaw-zj51 https://www.dggv.de/e-publikationen/salts-as-proxies-for-water-soil-interaction-in-the-hyperarid-atacama-desert en eng Deutsche Geologische Gesellschaft - Geologische Vereinigung e.V. (DGGV) Abstract ScholaryArticle Text article-journal 2023 ftdatacite https://doi.org/10.48380/zgaw-zj51 2024-01-04T23:34:38Z The Atacama Desert is the oldest and driest non-polar desert on Earth, where salts have accumulated through atmospheric deposition over millions of years of hyperaridity. These salts can serve as an indicator to provide an understanding of the interaction between water and soil in changing environmental conditions. Therefore, four soil profiles were studied for their mineralogy, abundance of salts, and stable isotopic composition of sulfate. In all soil profiles, sulfates are the predominant salts showing a downward transition from gypsum to anhydrite accompanied by an increase in highly soluble salts and a decrease in δ 34 S and δ 18 O values of sulfate. These trends are consistent with downward water infiltration during rare rain events causing salt dissolution and subsequent precipitation in the deeper soil column. This conclusion is also supported by our Rayleigh fractionation model. The presence of anhydrite at >40 cm depth is attributed to their association with nitrate and chloride salts, which ... Text polar desert DataCite Metadata Store (German National Library of Science and Technology) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
description |
The Atacama Desert is the oldest and driest non-polar desert on Earth, where salts have accumulated through atmospheric deposition over millions of years of hyperaridity. These salts can serve as an indicator to provide an understanding of the interaction between water and soil in changing environmental conditions. Therefore, four soil profiles were studied for their mineralogy, abundance of salts, and stable isotopic composition of sulfate. In all soil profiles, sulfates are the predominant salts showing a downward transition from gypsum to anhydrite accompanied by an increase in highly soluble salts and a decrease in δ 34 S and δ 18 O values of sulfate. These trends are consistent with downward water infiltration during rare rain events causing salt dissolution and subsequent precipitation in the deeper soil column. This conclusion is also supported by our Rayleigh fractionation model. The presence of anhydrite at >40 cm depth is attributed to their association with nitrate and chloride salts, which ... |
format |
Text |
author |
Arens, Felix Leo Airo, Alessandro Feige, Jenny Sager, Christof Wiechert, Uwe Schulze-Makuch, Dirk |
spellingShingle |
Arens, Felix Leo Airo, Alessandro Feige, Jenny Sager, Christof Wiechert, Uwe Schulze-Makuch, Dirk Salts as proxies for water-soil interaction in the hyperarid Atacama Desert ... |
author_facet |
Arens, Felix Leo Airo, Alessandro Feige, Jenny Sager, Christof Wiechert, Uwe Schulze-Makuch, Dirk |
author_sort |
Arens, Felix Leo |
title |
Salts as proxies for water-soil interaction in the hyperarid Atacama Desert ... |
title_short |
Salts as proxies for water-soil interaction in the hyperarid Atacama Desert ... |
title_full |
Salts as proxies for water-soil interaction in the hyperarid Atacama Desert ... |
title_fullStr |
Salts as proxies for water-soil interaction in the hyperarid Atacama Desert ... |
title_full_unstemmed |
Salts as proxies for water-soil interaction in the hyperarid Atacama Desert ... |
title_sort |
salts as proxies for water-soil interaction in the hyperarid atacama desert ... |
publisher |
Deutsche Geologische Gesellschaft - Geologische Vereinigung e.V. (DGGV) |
publishDate |
2023 |
url |
https://dx.doi.org/10.48380/zgaw-zj51 https://www.dggv.de/e-publikationen/salts-as-proxies-for-water-soil-interaction-in-the-hyperarid-atacama-desert |
genre |
polar desert |
genre_facet |
polar desert |
op_doi |
https://doi.org/10.48380/zgaw-zj51 |
_version_ |
1789337836843958272 |