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dc.contributor.author
Bianciardi, Giorgio
dc.contributor.author
Rizzo, Vincenzo
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dc.contributor.author
Farias, Maria Eugenia
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dc.contributor.author
Cantasano, Nicola
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dc.date.available
2019-05-20T14:19:58Z
dc.date.issued
2015-11
dc.identifier.citation
Bianciardi, Giorgio; Rizzo, Vincenzo; Farias, Maria Eugenia; Cantasano, Nicola; Microbialites at Gusev Crater, Mars; Science Editors; Journal of Astrobiology & Outreach; 03; 05; 11-2015; 1-8
dc.identifier.issn
2332-2519
dc.identifier.uri
http://hdl.handle.net/11336/76705
dc.description.abstract
The Mars Exploration Rover Spirit investigated plains at Gusev crater, where sedimentary rocks are present. The Spirit rover’s Athena morphological investigation shows microstructures organized in intertwined filaments of microspherules: a texture we have also found on samples of terrestrial stromatolites and other microbialites. We performed a quantitative image analysis to compare 45 microbialites samplings with 50 rover’s ones (approximately 25,000/20,000 microstructures). Contours were extracted and morphometric indexes obtained: geometric and algorithmic complexities, entropy, tortuosity, minimum and maximum diameters. Terrestrial and Martian textures resulted multifractals, while terrestrial abiogenic minerals showed a simple fractal structure. Mean values and confidence intervals from the Martian images overlapped perfectly with those from terrestrial samples. The probability of this occurring by chance was less than 1/28 , p<0.004. Our work show the presumptive evidence of microbialites in the Martian outcroppings explored by “Spirit”, confirming our previous results concerning the Martian outcroppings explored by Opportunity at Meridiani Planum: unicellular life was widespread on the ancient Mars.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Science Editors
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Mars
dc.subject
Stromatolites
dc.subject
Microbialites
dc.subject
Fractal Analysis
dc.subject.classification
Otras Ciencias Biológicas
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dc.subject.classification
Ciencias Biológicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Microbialites at Gusev Crater, Mars
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2019-05-14T21:35:39Z
dc.journal.volume
03
dc.journal.number
05
dc.journal.pagination
1-8
dc.journal.pais
Estados Unidos
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dc.journal.ciudad
New York
dc.description.fil
Fil: Bianciardi, Giorgio. Università degli Studi di Siena; Italia
dc.description.fil
Fil: Rizzo, Vincenzo. Consiglio Nazionale delle Ricerche; Italia
dc.description.fil
Fil: Farias, Maria Eugenia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Planta Piloto de Procesos Industriales Microbiológicos; Argentina
dc.description.fil
Fil: Cantasano, Nicola. National Research Council; Italia
dc.journal.title
Journal of Astrobiology & Outreach
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://dx.doi.org/10.4172/2332-2519.1000143
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.longdom.org/open-access/microbialites-at-gusev-crater-mars-2332-2519-1000143.pdf
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