A terrestrial brine-seepage analogue for Martian slope streaks near Salar de Pedernales in the Chilean Atacama desert

Autores
Mushkin, Amit; Sletten, Ronal; Trombotto, Dario Tomas; Batbaatar, Jigjidsurengiin; Amit, Rivka; Halevy, I.; Morag, N.; Gillespie, Alan R.
Año de publicación
2020
Idioma
inglés
Tipo de recurso
documento de conferencia
Estado
versión publicada
Descripción
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.
Fil: Mushkin, Amit. Geological Survey Of Israel; Israel. University of Washington; Estados Unidos
Fil: Sletten, Ronal. University of Washington; Estados Unidos
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
Fil: Batbaatar, Jigjidsurengiin. University of Washington; Estados Unidos
Fil: Amit, Rivka. Geological Survey Of Israel; Israel
Fil: Halevy, I.. Weizmann Institute of Science; Israel
Fil: Morag, N.. Geological Survey Of Israel; Israel
Fil: Gillespie, Alan R.. University of Washington; Estados Unidos
Conferencia de la Sociedad Geológica y la Asociación Israelí de Recursos
Jerusalem
Israel
Israel Geological Society
Materia
MARS
SALAR DE PEDERNALES
ATACAMA
MARTIAN SLOPE STREAKS
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/204458
Acceder
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network_name_str CONICET Digital (CONICET)
spelling A terrestrial brine-seepage analogue for Martian slope streaks near Salar de Pedernales in the Chilean Atacama desertMushkin, AmitSletten, RonalTrombotto, Dario TomasBatbaatar, JigjidsurengiinAmit, RivkaHalevy, I.Morag, N.Gillespie, Alan R.MARSSALAR DE PEDERNALESATACAMAMARTIAN SLOPE STREAKShttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Martian 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.Fil: Mushkin, Amit. Geological Survey Of Israel; Israel. University of Washington; Estados UnidosFil: Sletten, Ronal. University of Washington; Estados UnidosFil: 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; ArgentinaFil: Batbaatar, Jigjidsurengiin. University of Washington; Estados UnidosFil: Amit, Rivka. Geological Survey Of Israel; IsraelFil: Halevy, I.. Weizmann Institute of Science; IsraelFil: Morag, N.. Geological Survey Of Israel; IsraelFil: Gillespie, Alan R.. University of Washington; Estados UnidosConferencia de la Sociedad Geológica y la Asociación Israelí de RecursosJerusalemIsraelIsrael Geological SocietyIsrael Geological Society2020info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjectConferenciaBookhttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciaapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/204458A 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; 186-186CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://34641b8e-a42f-4f50-a597-7d50d057d338.filesusr.com/ugd/d5b382_4b4c40f4dbf245e8846591383b0b5adc.pdfInternacionalinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:06:52Zoai:ri.conicet.gov.ar:11336/204458instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 10:06:53.146CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv A terrestrial brine-seepage analogue for Martian slope streaks near Salar de Pedernales in the Chilean Atacama desert
title A terrestrial brine-seepage analogue for Martian slope streaks near Salar de Pedernales in the Chilean Atacama desert
spellingShingle A terrestrial brine-seepage analogue for Martian slope streaks near Salar de Pedernales in the Chilean Atacama desert
Mushkin, Amit
MARS
SALAR DE PEDERNALES
ATACAMA
MARTIAN SLOPE STREAKS
title_short A terrestrial brine-seepage analogue for Martian slope streaks near Salar de Pedernales in the Chilean Atacama desert
title_full A terrestrial brine-seepage analogue for Martian slope streaks near Salar de Pedernales in the Chilean Atacama desert
title_fullStr A terrestrial brine-seepage analogue for Martian slope streaks near Salar de Pedernales in the Chilean Atacama desert
title_full_unstemmed A terrestrial brine-seepage analogue for Martian slope streaks near Salar de Pedernales in the Chilean Atacama desert
title_sort A terrestrial brine-seepage analogue for Martian slope streaks near Salar de Pedernales in the Chilean Atacama desert
dc.creator.none.fl_str_mv Mushkin, Amit
Sletten, Ronal
Trombotto, Dario Tomas
Batbaatar, Jigjidsurengiin
Amit, Rivka
Halevy, I.
Morag, N.
Gillespie, Alan R.
author Mushkin, Amit
author_facet Mushkin, Amit
Sletten, Ronal
Trombotto, Dario Tomas
Batbaatar, Jigjidsurengiin
Amit, Rivka
Halevy, I.
Morag, N.
Gillespie, Alan R.
author_role author
author2 Sletten, Ronal
Trombotto, Dario Tomas
Batbaatar, Jigjidsurengiin
Amit, Rivka
Halevy, I.
Morag, N.
Gillespie, Alan R.
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv MARS
SALAR DE PEDERNALES
ATACAMA
MARTIAN SLOPE STREAKS
topic MARS
SALAR DE PEDERNALES
ATACAMA
MARTIAN SLOPE STREAKS
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv 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.
Fil: Mushkin, Amit. Geological Survey Of Israel; Israel. University of Washington; Estados Unidos
Fil: Sletten, Ronal. University of Washington; Estados Unidos
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
Fil: Batbaatar, Jigjidsurengiin. University of Washington; Estados Unidos
Fil: Amit, Rivka. Geological Survey Of Israel; Israel
Fil: Halevy, I.. Weizmann Institute of Science; Israel
Fil: Morag, N.. Geological Survey Of Israel; Israel
Fil: Gillespie, Alan R.. University of Washington; Estados Unidos
Conferencia de la Sociedad Geológica y la Asociación Israelí de Recursos
Jerusalem
Israel
Israel Geological Society
description 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.
publishDate 2020
dc.date.none.fl_str_mv 2020
dc.type.none.fl_str_mv info:eu-repo/semantics/publishedVersion
info:eu-repo/semantics/conferenceObject
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Book
http://purl.org/coar/resource_type/c_5794
info:ar-repo/semantics/documentoDeConferencia
status_str publishedVersion
format conferenceObject
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/204458
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
CONICET Digital
CONICET
url http://hdl.handle.net/11336/204458
identifier_str_mv 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
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
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eu_rights_str_mv openAccess
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dc.format.none.fl_str_mv application/pdf
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application/pdf
dc.coverage.none.fl_str_mv Internacional
dc.publisher.none.fl_str_mv Israel Geological Society
publisher.none.fl_str_mv Israel Geological Society
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repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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