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Possible organosedimentary structures on Mars

  • Vincenzo Rizzo (a1) and Nicola Cantasano (a2)
Abstract
Abstract

This study, using the Microscopic Imager (MI) of NASA Rover Exploration Mission's (REM) ‘Opportunity’, aims to explain the origin of laminated sediments lying at Meridiani Planum of Mars, and of the strange spherules, known as blueberries, about which several hypotheses have been formulated. To this purpose, images of the sedimentary textures of layers and fragments captured by REM have been analysed; sediments that NASA has already established as ‘pertinent to water presence’. Our study shows that such laminated sediments and the spherules they contain could be organosedimentary structures, probably produced by microorganisms. The laminated structures are characterized by a sequence of a thin pair of layers, which have the features of skeletal/agglutinated laminae and whose basic constituents are made by a partition of septa and vacuoles radially arranged around a central one. The growth of these supposed organosedimentary masses is based on the ‘built flexibility’ of such a basal element; it may be a coalescing microfossil formed by progressive film accretion (calcimicrobe), in a variety of geometrical gross forms, such as a repeated couplet sequence of laminae or domal mass and large composite polycentric spherule, both in elevation. The acquired structural and textural data seem to be consistent with the existence of life on Mars and could explain an origin of sediments at Meridiani Planum similar to that of terrestrial stromatolites. The Martian deposits, probably produced by cyanobacterial activity, and the embedded blueberries could represent a recurrent and multiform product of colonies with sheath forms, resembling in shape those of the fossil genus Archaeosphaeroides (stromatolites of Fig Tree, South Africa).

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Corresponding author
e-mail: n.cantasano@isafom.cs.cnr.it
References
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Barghoorn E.S. & Schopf J.W. (1965). Microorganisms from the Late Precambrian of Central Australia. Science 150, 337339.
Barghoorn E.S. & Tyler S.A. (1965). Microorganisms from the Glunflint chert. Science 147, 563577.
Bums R.G. & Burns V.M. (1975). Mechanism for nucleation and growth of manganese nodules. Nature 225, 130131.
Burne R.V. & Moore L.S. (1987). Microbolites: organosedimentary deposits of benthic microbial communities. Palaios 2, 241254.
Caiola M.G. & Billi D. (2007). Chroococcidiopsis from Desert to Mars. (Book Series). Cellular Origin, Life in Extreme Habitats and Astrobiology. Algae and Cyanobacteria in Extreme Environments, Vol. 11, pp. 553568. Kluwer Academic Publishers, Dortrecht.
Camoin G.F., Gautret P., Montaggioni L.F. & Cabioch G. (1999). Nature and environmental significance of microbialites in quaternary reefs: the Thaiti paradox. Sediment. Geol. 126, 271304.
Catling D.C. (2004). On Earth, as it is on Mars? Nature 429, 707708.
Chan M.A., Beitler B., Parry W.T., Ormö J. & Komatsu G. (2004). A possible terrestrial analogue for haematite concretions on Mars. Nature 428, 731734.
Chan M.A., Bowen B.B., Parry W.T., Ormö J. & Komatsu G. (2005). Red rock and red planet diagenesis: Comparisons of Earth and Mars concretions. Geol. Soc. Am. 15(8), 4–10.
Coleman M.L., Hubbard C.G., Mielke R.E. & Black S. (2005). Chemical and Isotopic Characterization of Waters in Rio Tinto, Spain, shows possible origin of the Blueberry Haematite Nodules in Meridiani Planum, Mars. American Geophysical Union, Fall Meeting.
Dupraz C. & Strasser A. (1999). Microbolites and micro-encrusters in shallow coral bioherms. Middle to Late Oxfordian, Swiss Jura Mountains. Facies 40, 101130.
Jepsen S.M., Priscu J.C., Grimm R.E. & Bullock M.A. (2007). The potential for lithoautotrophic life on Mars: application to shallow interfacial water environments. Astrobiology 7(2), 342354.
Knauth L.P., Burt D.M. & Wohletz K.H. (2005). Impact origin of sediments at the Opportunity landing site on Mars. Nature 438, 11231128.
Manten A.A. (1971). Silurian reefs of Gotland. Dev. Sedimentology 13, 1539.
McCollom T.M. & Hynek B.M. (2006). A volcanic environment for bedrock diagenesis at Meridiani Planum on Mars. Nature 438, 11291131.
McKay D.S., Gibson E.K. Jr., Thomas-Keprta K.L., Vali H., Romanek C.S., Clemett S.J., Chillier D.F., Maechling C.R. & Zare R.N. (1996). Search for past life on Mars: possible relic biogenic activity in Martian meteorite ALH84001. Science 273, 924930.
McKay G., Mikouchi T., Schwandt C. & Lofgren G. (1998). Fracture fillings in ALH84001. Feldspathic glass: carbonatic and silica. 29 thAnnual Lunar and Planetary Science Conference held March 16–20, 1998 in Houston, Texas. LPI Contribution No. 1998, Abstract no. 1944.
Moore J.M. (2004). Blueberry fields for ever. Nature 428, 711712.
Morris P.A., Allen C.C., Gibson E.K., McKay D.S. & Thomas-Keprta K. (1998). Re-examination of the Warrawoona group fossils (Towers Formation, Western Australia, 3,3 to 3,5 GA): analogs of Mars meteorite fossils?29 thAnnual Lunar and Planetary Science Conference held March 16–20, 1998 in Houston, Texas. LPI Contribution No. 1998, Abstract no. 1496.
Nose M., Schmid D.U. & Leinfelder R.R. (2006). Significance of microbialites, calcimicrobes and calcareous algae in reefal framework formation from the Silurian of Gotland, Sweden. Sediment Geol. 192(3–4), 243265.
Onstott T.C., McGown D., Kessler J., Sherwood Lollar B., Lehmann K.K., & Clifford S.M. (2006). Martian CH4: Sources, Flux and Detection. Astrobiology 6(2), 377395.
Parro V. et al. (2005). Instruments development to search for biomarkers on Mars: terrestrial acidophile, iron-powered chemiolithoautotrophic communities as model systems. Planet. Space Sci. 53(7), 729737.
Pope M.C., Grotzinger J.P. & Schreiber B.C. (2000). Evaporitic subtidal stromatolites produced by in situ precipitation: textures, facies associations and temporal significance. J. Sediment Res. 70(5), 11391151.
Schneider A.L., Mittlefehldt D.W., Gellert R. & Jollif B. (2007). Compositional constraints on ematite-rich spherule (Blueberry) formation at Meridiani Planum, Mars. Proc. Lunar Planet Sci. Conf. held March 12–16, 2007 in League City, Texas. LPI Contribution No. 1338, XXXVIII 1941 pdf.
Schopf J.W. & Barghoorn E.S. (1967). Alga-like fossils from the Early Precambrian of South Africa. Science 156, 508512.
Schulze-Makuch D., Fairén A.G. & Davila A.F. (2008). The case for life on Mars. Int. J. Astrobiol. 7, 117141.
Squyres S.W. et al. (2004). The Opportunity Rover's Athena Science Investigation at Meridiani Planum, Mars. Science 306, 16981703.
Squyres S.W. et al. (2006). Planetary science: bedrock formation at Meridiani Planum. Nature 443, 17091714.
Van Houten F.B. & Bhattacharrya D.P. (1982). Phanerozoic oolitic ironstones – Geologic records and facies model. Annu. Rev. Earth Planet. Sci. 10, 441457.
Wacey D. (2009). Early Life on Earth: A Practical Guide, pp. 1274. Springer, Berlin.
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International Journal of Astrobiology
  • ISSN: 1473-5504
  • EISSN: 1475-3006
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