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dc.contributor.author
Mushkin, Amit
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Sletten, Ronal
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Trombotto, Dario Tomas
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Batbaatar, Jigjidsurengiin
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Amit, Rivka
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Halevy, I.
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Morag, N.
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Gillespie, Alan R.
dc.date.available
2023-07-19T14:37:30Z
dc.date.issued
2020
dc.identifier.citation
A terrestrial brine-seepage analogue for Martian slope streaks near Salar de Pedernales in the Chilean Atacama desert; Conferencia de la Sociedad Geológica y la Asociación Israelí de Recursos; Jerusalem; Israel; 2020; 186-186
dc.identifier.uri
http://hdl.handle.net/11336/204458
dc.description.abstract
Martian slope streaks are elongated down-slope, low-albedo surface features that currently form within sub-annual time scales in the high-albedo (dusty) regions of equatorial Mars. These km-scale streaks, which can persist up to several decades on the Martian surface, present one of the most enigmatic and dynamic suites of active surface features on present-day Mars. Two categories of explanations remain in debate regarding their nature: 1) Dry formation models, in which surface darkening is associated with mass wasting processes, such as dust avalanches; and 2) Wet formation models, in which surface darkening is associated with transient wetting of the surface by either seepage of sub-surface brines or deliquescence of atmospheric moisture. Here, we report recently discovered dark slope streaks that occur in the high Atacama Desert of Chile and display a close geomorphic resemblance to the Martian streaks. Field examination of the Atacama slope streaks revealed that they formed through down-slope seepage of a groundwater brine sourced from the Salar de Pedernales located 500 m away. Chemical and mineralogical analyses demonstrate that salts deposited from the Pedernales brines combined with detrital input from soils/dust are responsible for surface darkening in the Atacama case. Field-based spectral measurements in the 0.4-2.5 micron wavelength range and high-resolution topography derived from drone imagery compare between the spectral and textural characteristics of the Martian and Atacama streaks. Our study of these unique terrestrial streak analogs supports the wet formation hypothesis as a viable hypothesis for some of Martian slope streaks.
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application/pdf
dc.language.iso
eng
dc.publisher
Israel Geological Society
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
MARS
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SALAR DE PEDERNALES
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ATACAMA
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MARTIAN SLOPE STREAKS
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Geociencias multidisciplinaria
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Ciencias de la Tierra y relacionadas con el Medio Ambiente
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CIENCIAS NATURALES Y EXACTAS
dc.title
A terrestrial brine-seepage analogue for Martian slope streaks near Salar de Pedernales in the Chilean Atacama desert
dc.type
info:eu-repo/semantics/publishedVersion
dc.type
info:eu-repo/semantics/conferenceObject
dc.type
info:ar-repo/semantics/documento de conferencia
dc.date.updated
2022-11-04T15:37:45Z
dc.journal.pagination
186-186
dc.journal.pais
Israel
dc.journal.ciudad
Jerusalem
dc.description.fil
Fil: Mushkin, Amit. Geological Survey Of Israel; Israel. University of Washington; Estados Unidos
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Fil: Sletten, Ronal. University of Washington; Estados Unidos
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Fil: Trombotto, Dario Tomas. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Provincia de Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; Argentina
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Fil: Batbaatar, Jigjidsurengiin. University of Washington; Estados Unidos
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Fil: Amit, Rivka. Geological Survey Of Israel; Israel
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Fil: Halevy, I.. Weizmann Institute of Science; Israel
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Fil: Morag, N.. Geological Survey Of Israel; Israel
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Fil: Gillespie, Alan R.. University of Washington; Estados Unidos
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://34641b8e-a42f-4f50-a597-7d50d057d338.filesusr.com/ugd/d5b382_4b4c40f4dbf245e8846591383b0b5adc.pdf
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dc.coverage
Internacional
dc.type.subtype
Conferencia
dc.description.nombreEvento
Conferencia de la Sociedad Geológica y la Asociación Israelí de Recursos
dc.date.evento
2020-03
dc.description.ciudadEvento
Jerusalem
dc.description.paisEvento
Israel
dc.type.publicacion
Book
dc.description.institucionOrganizadora
Israel Geological Society
dc.source.libro
Libro de resúmenes de la Conferencia de la Sociedad Geológica y la Asociación Israelí de Recursos
dc.type
Conferencia
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