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المؤلفEdwards, Howell G.M.
المؤلفSadooni, Fadhil
المؤلفVítek, Petr
المؤلفJehlička, Jan
تاريخ الإتاحة2023-09-10T10:43:31Z
تاريخ النشر2010-07-13
اسم المنشورPhilosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences
المعرّفhttp://dx.doi.org/10.1098/rsta.2010.0101
الاقتباسEdwards, H. G., Sadooni, F., Vítek, P., & Jehlička, J. (2010). Raman spectroscopy of the Dukhan sabkha: identification of geological and biogeological molecules in an extreme environment. Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 368(1922), 3099-3107.‏
الرقم المعياري الدولي للكتاب1364503X
معرّف المصادر الموحدhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=77955209497&origin=inward
معرّف المصادر الموحدhttp://hdl.handle.net/10576/47356
الملخصThe characterization of minerals and biogeological deposits in a terrestrial Arabian sabkha has a direct relevance for the exploration of Mars since the discovery by the NASA rovers Spirit and Opportunity of evaporate minerals on Mars that could have arisen from aquifers and subsurface water movement. The recognition of carbonates and sulphates in Gusev Crater has afforded an additional impetus to these studies, as relict or extant microbial extremophilic organisms could have colonized these geological matrices, as has been recorded on Earth. Here, we describe the Raman spectroscopic analysis of specimens of evaporitic materials sampled from the Dukhan sabkha, the largest inland sabkha in the Persian Gulf. With daily temperatures reaching in excess of 60°C and extreme salinity, we have identified the characteristic Raman signatures of keybiomolecular compounds in association with evaporitic minerals and geological carbonate and sulphate matrices, which indicate that extremophilic cyanobacterial colonies are existent there. This evidence, the first to be acquired spectroscopically from such a region, establishes a platform for further studies using remote, portable Raman instrumentation that will inform the potential of detection of similar systems on the Martian surface or subsurface in future space missions. A comparison is made between the results from this study and the previous analysis of a gypsum/halite sabkha where the extremophilic molecular signatures were better preserved. © 2010 The Royal Society.
اللغةen
الناشرThe Royal Society
الموضوعCyanobacteria
Evaporites
Extremophiles
Raman spectroscopy
Sabkha
العنوانRaman spectroscopy of the Dukhan sabkha: identification of geological and biogeological molecules in an extreme environment
النوعArticle
الصفحات3099-3107
رقم العدد1922
رقم المجلد368
dc.accessType Open Access


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