Unveiling the Subsurface of Late Amazonian Lava Flows at Echus Chasma, on Mars

The Echus-Kasei region on Mars has been exposed to different episodic volcanic, fluvial, and glacial events in Amazonian time. The goal of the present work is to demonstrate the usefulness of radar instruments to find preserved late Amazonian subsurface structures that may have been encapsulated und...

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Detalles Bibliográficos
Autores: Mansilla, Federico, Zorzano, María Paz, Giannakis, Iraklis, Ruiz Pérez, Javier
Tipo de recurso: artículo
Fecha de publicación:2023
País:España
Institución:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/73136
Acceso en línea:https://hdl.handle.net/20.500.14352/73136
Access Level:acceso abierto
Palabra clave:551.21(157)
523.43
radar
Mars
lava
Amazonian
Astronomía (Física)
Petrología
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spelling Unveiling the Subsurface of Late Amazonian Lava Flows at Echus Chasma, on MarsMansilla, FedericoZorzano, María PazGiannakis, IraklisRuiz Pérez, Javier551.21(157)523.43radarMarslavaAmazonianAstronomía (Física)PetrologíaThe Echus-Kasei region on Mars has been exposed to different episodic volcanic, fluvial, and glacial events in Amazonian time. The goal of the present work is to demonstrate the usefulness of radar instruments to find preserved late Amazonian subsurface structures that may have been encapsulated underneath recent lava flows on Mars. We have analysed 27 radar observations of the SHAllow RADar (SHARAD) instrument on board the Mars Reconnaissance Orbiter (MRO), over the region of Echus Chasma. We discovered the presence of subsurface reflectors in five consecutive SHARAD radargrams at a depth from 35 to 79 m beneath the structure of a lava fan that formed about 59 ± 4 Ma ago. Some vents are preserved above the surface of this lava flow, which stands at a height of 80 m above the surrounding surface. A few kilometres to the north, we find other subsurface reflectors at a depth of about 30 m and a long pit chain formed by the collapse of a lava tube. These kinds of subsurface late Amazonian structures are of interest for astrobiology because they date from the last period when the planet still experienced intense volcanic activity over regions that were previously extensively covered by water.Universidad Complutense de Madrid20232023-01-0120232023-01-01journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/73136reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Atribución 3.0 Españahttps://creativecommons.org/licenses/by/3.0/es/info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/731362026-06-02T12:44:21Z
dc.title.none.fl_str_mv Unveiling the Subsurface of Late Amazonian Lava Flows at Echus Chasma, on Mars
title Unveiling the Subsurface of Late Amazonian Lava Flows at Echus Chasma, on Mars
spellingShingle Unveiling the Subsurface of Late Amazonian Lava Flows at Echus Chasma, on Mars
Mansilla, Federico
551.21(157)
523.43
radar
Mars
lava
Amazonian
Astronomía (Física)
Petrología
title_short Unveiling the Subsurface of Late Amazonian Lava Flows at Echus Chasma, on Mars
title_full Unveiling the Subsurface of Late Amazonian Lava Flows at Echus Chasma, on Mars
title_fullStr Unveiling the Subsurface of Late Amazonian Lava Flows at Echus Chasma, on Mars
title_full_unstemmed Unveiling the Subsurface of Late Amazonian Lava Flows at Echus Chasma, on Mars
title_sort Unveiling the Subsurface of Late Amazonian Lava Flows at Echus Chasma, on Mars
dc.creator.none.fl_str_mv Mansilla, Federico
Zorzano, María Paz
Giannakis, Iraklis
Ruiz Pérez, Javier
author Mansilla, Federico
author_facet Mansilla, Federico
Zorzano, María Paz
Giannakis, Iraklis
Ruiz Pérez, Javier
author_role author
author2 Zorzano, María Paz
Giannakis, Iraklis
Ruiz Pérez, Javier
author2_role author
author
author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 551.21(157)
523.43
radar
Mars
lava
Amazonian
Astronomía (Física)
Petrología
topic 551.21(157)
523.43
radar
Mars
lava
Amazonian
Astronomía (Física)
Petrología
description The Echus-Kasei region on Mars has been exposed to different episodic volcanic, fluvial, and glacial events in Amazonian time. The goal of the present work is to demonstrate the usefulness of radar instruments to find preserved late Amazonian subsurface structures that may have been encapsulated underneath recent lava flows on Mars. We have analysed 27 radar observations of the SHAllow RADar (SHARAD) instrument on board the Mars Reconnaissance Orbiter (MRO), over the region of Echus Chasma. We discovered the presence of subsurface reflectors in five consecutive SHARAD radargrams at a depth from 35 to 79 m beneath the structure of a lava fan that formed about 59 ± 4 Ma ago. Some vents are preserved above the surface of this lava flow, which stands at a height of 80 m above the surrounding surface. A few kilometres to the north, we find other subsurface reflectors at a depth of about 30 m and a long pit chain formed by the collapse of a lava tube. These kinds of subsurface late Amazonian structures are of interest for astrobiology because they date from the last period when the planet still experienced intense volcanic activity over regions that were previously extensively covered by water.
publishDate 2023
dc.date.none.fl_str_mv 2023
2023-01-01
2023
2023-01-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/20.500.14352/73136
url https://hdl.handle.net/20.500.14352/73136
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Atribución 3.0 España
https://creativecommons.org/licenses/by/3.0/es/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Atribución 3.0 España
https://creativecommons.org/licenses/by/3.0/es/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Docta Complutense
instname:Universidad Complutense de Madrid (UCM)
instname_str Universidad Complutense de Madrid (UCM)
reponame_str Docta Complutense
collection Docta Complutense
repository.name.fl_str_mv
repository.mail.fl_str_mv
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