A late Quaternary paleoenvironmental record in sand dunes of the northern Atacama Desert, Chile
Abstract
This study reports a previously unidentified paleoenvironmental record found in sand dunes of the Atacama Desert, Chile. Long-term aeolian deflation by prevailing onshore winds has resulted in the deposition of sand on the irregular surface of a Miocene-aged anhydrite outcrop. Two deposits ~25 km apart, along the prevailing wind trajectory, were hand excavated then analyzed for vertical (and temporal) changes in physical and chemical composition. Radiocarbon ages of organic matter embedded within the deposits show that rapid accumulation of sediment began at the last glacial maximum and slowed considerably after the Pacific Ocean attained its present post-glacial level. Over this time period, grain sizes are seen to increase while accumulation rates simultaneously decrease, suggesting greater wind speeds and/or a change or decrease in sediment supply. Changes in δ34S values of sulfate in the sediment beginning ~10 ka indicate an increase in marine sources. Similarly, δ2H values from palmitic acid show a steady increase at ~10 ka, likely resulting from aridification of the region during the Holocene. Finally, due to the extreme aridity in the region, these sand dunes retain a well-preserved chemical record that reflects changes in elevation and coastal proximity after the last glacial maximum.
- Authors:
-
- Univ. of California, Berkeley, CA (United States). Dept. of Environmental Science, Policy and Management; Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States). Center for Accelerator Mass Spectrometry
- Univ. of California, Berkeley, CA (United States). Dept. of Environmental Science, Policy and Management; Univ. of Chile, La Pintana (Chile). Dept. of Engineering and Soils. Faculty of Agricultural Sciences
- California Inst. of Technology (CalTech), Pasadena, CA (United States). Jet Propulsion Lab.
- Univ. of California, Berkeley, CA (United States). Dept. of Environmental Science, Policy and Management
- Publication Date:
- Research Org.:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); University of California, Berkeley, CA (United States); California Institute of Technology (CalTech), Pasadena, CA (United States); Univ. of Chile, La Pintana (Chile)
- Sponsoring Org.:
- USDOE; National Aeronautics and Space Administration (NASA); National Science Foundation (NSF); National Commission for Scientific and Technological Research (CONICYT) (Chile)
- OSTI Identifier:
- 1461747
- Report Number(s):
- LLNL-JRNL-717742
Journal ID: ISSN 0033-5894; 861607
- Grant/Contract Number:
- AC52-07NA27344; DEB-1406956; 0819972
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Quaternary Research
- Additional Journal Information:
- Journal Volume: 90; Journal Issue: 1; Journal ID: ISSN 0033-5894
- Publisher:
- University of Washington - Cambridge University Press
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 54 ENVIRONMENTAL SCIENCES; hyperarid Atacama Desert; sand dune; paleoenvironment; isotope analyses; biological soil crust (BSC); lichen; fog
Citation Formats
Finstad, Kari M., Pfeiffer, Marco, McNicol, Gavin, Tuite, Michael, Williford, Kenneth, and Amundson, Ronald. A late Quaternary paleoenvironmental record in sand dunes of the northern Atacama Desert, Chile. United States: N. p., 2018.
Web. doi:10.1017/qua.2018.20.
Finstad, Kari M., Pfeiffer, Marco, McNicol, Gavin, Tuite, Michael, Williford, Kenneth, & Amundson, Ronald. A late Quaternary paleoenvironmental record in sand dunes of the northern Atacama Desert, Chile. United States. https://doi.org/10.1017/qua.2018.20
Finstad, Kari M., Pfeiffer, Marco, McNicol, Gavin, Tuite, Michael, Williford, Kenneth, and Amundson, Ronald. Wed .
"A late Quaternary paleoenvironmental record in sand dunes of the northern Atacama Desert, Chile". United States. https://doi.org/10.1017/qua.2018.20. https://www.osti.gov/servlets/purl/1461747.
@article{osti_1461747,
title = {A late Quaternary paleoenvironmental record in sand dunes of the northern Atacama Desert, Chile},
author = {Finstad, Kari M. and Pfeiffer, Marco and McNicol, Gavin and Tuite, Michael and Williford, Kenneth and Amundson, Ronald},
abstractNote = {This study reports a previously unidentified paleoenvironmental record found in sand dunes of the Atacama Desert, Chile. Long-term aeolian deflation by prevailing onshore winds has resulted in the deposition of sand on the irregular surface of a Miocene-aged anhydrite outcrop. Two deposits ~25 km apart, along the prevailing wind trajectory, were hand excavated then analyzed for vertical (and temporal) changes in physical and chemical composition. Radiocarbon ages of organic matter embedded within the deposits show that rapid accumulation of sediment began at the last glacial maximum and slowed considerably after the Pacific Ocean attained its present post-glacial level. Over this time period, grain sizes are seen to increase while accumulation rates simultaneously decrease, suggesting greater wind speeds and/or a change or decrease in sediment supply. Changes in δ34S values of sulfate in the sediment beginning ~10 ka indicate an increase in marine sources. Similarly, δ2H values from palmitic acid show a steady increase at ~10 ka, likely resulting from aridification of the region during the Holocene. Finally, due to the extreme aridity in the region, these sand dunes retain a well-preserved chemical record that reflects changes in elevation and coastal proximity after the last glacial maximum.},
doi = {10.1017/qua.2018.20},
journal = {Quaternary Research},
number = 1,
volume = 90,
place = {United States},
year = {Wed Apr 25 00:00:00 EDT 2018},
month = {Wed Apr 25 00:00:00 EDT 2018}
}
Web of Science
Works referenced in this record:
The contribution of fog to the water relations of Sequoia sempervirens (D. Don): foliar uptake and prevention of dehydration
journal, August 2004
- Burgess, S. S. O.; Dawson, T. E.
- Plant, Cell and Environment, Vol. 27, Issue 8
Geomorphologic evidence for the late Pliocene onset of hyperaridity in the Atacama Desert
journal, May 2012
- Amundson, R.; Dietrich, W.; Bellugi, D.
- Geological Society of America Bulletin, Vol. 124, Issue 7-8
Paleowetlands and regional climate change in the central Atacama Desert, northern chile
journal, May 2008
- Quade, Jay; Rech, Jason A.; Betancourt, Julio L.
- Quaternary Research, Vol. 69, Issue 03
Large and rapid climate variability during the Messinian salinity crisis: Evidence from deuterium concentrations of individual biomarkers
journal, January 2001
- Andersen, Nils; Paul, Hilary A.; Bernasconi, Stefano M.
- Geology, Vol. 29, Issue 9
Hydrogen isotope ratios of recent lacustrine sedimentary n-alkanes record modern climate variability
journal, December 2004
- Sachse, D.; Radke, J.; Gleixner, G.
- Geochimica et Cosmochimica Acta, Vol. 68, Issue 23
Performance of catalytically condensed carbon for use in accelerator mass spectrometry
journal, November 1984
- Vogel, J. S.; Southon, J. R.; Nelson, D. E.
- Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Vol. 5, Issue 2
Isotopic evidence for the source of Ca and S in soil gypsum, anhydrite and calcite in the Atacama Desert, Chile
journal, February 2003
- Rech, Jason A.; Quade, Jay; Hart, William S.
- Geochimica et Cosmochimica Acta, Vol. 67, Issue 4
Distribution and Properties of Vesicular Horizons in the Western United States
journal, January 2011
- Turk, Judith K.; Graham, Robert C.
- Soil Science Society of America Journal, Vol. 75, Issue 4
Late Quaternary paleohydrology of the central Atacama Desert (lat 22°–24°S), Chile
journal, March 2002
- Rech, Jason A.; Quade, Jay; Betancourt, Julio L.
- Geological Society of America Bulletin, Vol. 114, Issue 3
Perennial stream discharge in the hyperarid Atacama Desert of northern Chile during the latest Pleistocene
journal, December 2007
- Nester, P. L.; Gayo, E.; Latorre, C.
- Proceedings of the National Academy of Sciences, Vol. 104, Issue 50
Rates and geochemical processes of soil and salt crust formation in Salars of the Atacama Desert, Chile
journal, December 2016
- Finstad, Kari; Pfeiffer, Marco; McNicol, Gavin
- Geoderma, Vol. 284
Late Neogene lacustrine record and palaeogeography in the Quillagua–Llamara basin, Central Andean fore-arc (northern Chile)
journal, July 1999
- Sáez, A.; Cabrera, L.; Jensen, A.
- Palaeogeography, Palaeoclimatology, Palaeoecology, Vol. 151, Issue 1-3
Vertical variations in bassanite distribution patterns in near-surface sediments, southern Egypt
journal, November 2005
- Mees, Florias; De Dapper, Morgan
- Sedimentary Geology, Vol. 181, Issue 3-4
Evaporation in the Atacama Desert: An empirical study of spatio-temporal variations and their causes
journal, November 2006
- Houston, John
- Journal of Hydrology, Vol. 330, Issue 3-4
Compound-specific D/H ratios of lipid biomarkers from sediments as a proxy for environmental and climatic conditions
journal, January 2001
- Sauer, Peter E.; Eglinton, Timothy I.; Hayes, John M.
- Geochimica et Cosmochimica Acta, Vol. 65, Issue 2
Neogene evaporites in desert volcanic environments: Atacama Desert, northern Chile: Neogene evaporites in desert volcanic environments
journal, December 2001
- Pueyo, Juan Jos��; Chong, Guillermo; Jensen, Arturo
- Sedimentology, Vol. 48, Issue 6
Late Quaternary hydrological and ecological changes in the hyperarid core of the northern Atacama Desert (~21°S)
journal, July 2012
- Gayo, Eugenia M.; Latorre, Claudio; Jordan, Teresa E.
- Earth-Science Reviews, Vol. 113, Issue 3-4
The occurrence of bassanite in some Australian arid-zone soils
journal, December 1984
- Akpokodje, Enuvie G.
- Chemical Geology, Vol. 47, Issue 3-4
Landscape modification in response to repeated onset of hyperarid paleoclimate states since 14 Ma, Atacama Desert, Chile
journal, April 2014
- Jordan, T. E.; Kirk-Lawlor, N. E.; Blanco, N. P.
- Geological Society of America Bulletin, Vol. 126, Issue 7-8
Geomorphology: The Mechanics and Chemistry of Landscapes
book, January 2010
- Anderson, Robert S.; Anderson, Suzanne P.
Into and out of the Last Glacial Maximum: sea-level change during Oxygen Isotope Stages 3 and 2
journal, January 2002
- Lambeck, Kurt; Yokoyama, Yusuke; Purcell, Tony
- Quaternary Science Reviews, Vol. 21, Issue 1-3
Fractionation of hydrogen isotopes in lipid biosynthesis
journal, September 1999
- Sessions, Alex L.; Burgoyne, Thomas W.; Schimmelmann, Arndt
- Organic Geochemistry, Vol. 30, Issue 9
Rapid One-Step Method for Total Fatty Acids in Soils and Sediments
journal, January 2010
- Graber, Ellen R.; Tsechansky, Ludmila
- Soil Science Society of America Journal, Vol. 74, Issue 1
Inter-annual variability of southerly winds in a coastal area of the Atacama Desert: implications for the export of aeolian sediments to the adjacent marine environment: Export of aeolian material into a bay (north Chile)
journal, September 2011
- Flores-Aqueveque, Valentina; Alfaro, Stephane C.; Caquineau, Sandrine
- Sedimentology, Vol. 59, Issue 3
Advective, orographic and radiation fog in the Tarapacá region, Chile
journal, September 2002
- Cereceda, P.; Osses, P.; Larrain, H.
- Atmospheric Research, Vol. 64, Issue 1-4
Dust transport and the question of desert loess formation
journal, February 1987
- Tsoar, H.; Pye, K.
- Sedimentology, Vol. 34, Issue 1
Long term atmospheric deposition as the source of nitrate and other salts in the Atacama Desert, Chile: New evidence from mass-independent oxygen isotopic compositions
journal, October 2004
- Michalski, Greg; Böhlke, J. K.; Thiemens, Mark
- Geochimica et Cosmochimica Acta, Vol. 68, Issue 20
Timing of the Last Glacial Maximum from observed sea-level minima
journal, August 2000
- Yokoyama, Yusuke; Lambeck, Kurt; De Deckker, Patrick
- Nature, Vol. 406, Issue 6797
Multiple stages of aqueous alteration along fractures in mudstone and sandstone strata in Gale Crater, Mars
journal, August 2017
- Yen, A. S.; Ming, D. W.; Vaniman, D. T.
- Earth and Planetary Science Letters, Vol. 471
Molluscs as Evidence for a Late Pleistocene and Early Holocene Humid Period in the Southern Coastal Desert of Peru (14.5°S)
journal, January 2010
- Mächtle, Bertil; Unkel, Ingmar; Eitel, Bernhard
- Quaternary Research, Vol. 73, Issue 1
Late Pliocene age for the Atacama Desert: Implications for the desertification of western South America
journal, January 2002
- Hartley, Adrian J.; Chong, Guillermo
- Geology, Vol. 30, Issue 1
SHCal13 Southern Hemisphere Calibration, 0–50,000 Years cal BP
journal, January 2013
- Hogg, Alan G.; Hua, Quan; Blackwell, Paul G.
- Radiocarbon, Vol. 55, Issue 4
Origins of sulphate in Antarctic dry-valley soils as deduced from anomalous 17O compositions
journal, September 2000
- Bao, Huiming; Campbell, Douglas A.; Bockheim, James G.
- Nature, Vol. 407, Issue 6803
Establishment and formation of fog-dependent Tillandsia landbeckii dunes in the Atacama Desert: Evidence from radiocarbon and stable isotopes
journal, January 2011
- Latorre, Claudio; González, Angélica L.; Quade, Jay
- Journal of Geophysical Research, Vol. 116, Issue G3
Works referencing / citing this record:
Rare calcium chloride–rich soil and implications for the existence of liquid water in a hyperarid environment
journal, January 2019
- Pfeiffer, Marco; Latorre, Claudio; Gayo, Eugenia
- Geology, Vol. 47, Issue 2