تصفح حسب المؤلف "Bontognali, Tomaso R.R."
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Anoxygenic phototrophs and the forgotten art of making dolomite
Bontognali, Tomaso R.R. ( Geological Society of America , 2019 , Article)[No abstract available] -
Evidence of a Role for Aerobic Bacteria in High Magnesium Carbonate Formation in the Evaporitic Environment of Dohat Faishakh Sabkha in Qatar
Al Disi, Zulfa; Jaoua, Samir; Bontognali, Tomaso R.R.; Attia, Essam S.M.; Al-Kuwari, Hamad A. Al Saad; Zouari, Nabil... more authors ... less authors ( Frontiers Media , 2017 , Article)Dolomite (MgCa(CO3)2) is an important petroleum reservoir rock mineral common in ancient sedimentary rocks which is infrequently found in modern environments. The mechanism of dolomite formation remains poorly understood, ... -
Influence of temperature, salinity and Mg:Ca ratio on microbially-mediated formation of Mg-rich carbonates by Virgibacillus strains isolated from a sabkha environment.
Al Disi, Zulfa Ali; Bontognali, Tomaso R R; Jaoua, Samir; Attia, Essam; Al-Kuwari, Hamad Al Saad; Zouari, Nabil... more authors ... less authors ( Nature Research , 2019 , Article)Studies have demonstrated that microbes facilitate the incorporation of Mg into carbonate minerals, leading to the formation of potential dolomite precursors. Most microbes that are capable of mediating Mg-rich carbonates ... -
Mediation of carbonate minerals formation by aerobic bacterial strains isolated from Dohat Faishakh Sabkha in Qatar
Al Disi, Zulfa A.; Jaoua, Samir; Bontognali, Tomaso R.R.; Attia, Essam S.M.; Al-Kuwari, Hamad A.S.; Zouari, Nabil... more authors ... less authors ( Hamad bin Khalifa University Press (HBKU Press) , 2016 , Conference Paper)Carbon dioxide (CO2) is increasingly released to the environment as a result of the extensive use of various industrial facilities. According to the Intergovernmental Panel on Climate Change Report (2015), cumulative ... -
Microbial Mats from the Khor Al-Adaid Sabkha, Qatar: Morphotypes and Association with Authigenic Minerals
Bontognali, Tomaso R.R.; Al Disi, Zulfa Ali; Mckenzie, Judith A.; Strohmenger, Christian J.; Rivers, John M.; Dittrich, Maria; Sadooni, Fadhil; Al-Kuwari, Hamad Al Saad... more authors ... less authors ( Hamad bin Khalifa University Press (HBKU Press) , 2016 , Conference Paper)The sabkhas (i.e., salt flats) of Qatar are among the rare places on Earth where carbonate and sulfate minerals similar to those constituting economically important hydrocarbon reservoirs are still forming today, under the ... -
Microbially influenced formation of anhydrite at low temperature
Al Disi, Zulfa Ali; Sadooni, Fadhil; Al-Kuwari, Hamad Al Saad; Bontognali, Tomaso R.R. ( Elsevier B.V. , 2023 , Article)Calcium sulfate minerals are abundant in nature – on Earth and on Mars – and important in several fields of material sciences. With respect to gypsum and bassanite, anhydrite represents the anhydrous crystalline phase in ... -
Systematic laboratory approach to produce Mg-rich carbonates at low temperature
Al Disi, Zulfa Ali; Zouari, Nabil; Attia, Essam; Al-Asali, Mazen; Al Saad Al-Kuwari, Hamad; Sadooni, Fadhil; Dittrich, Maria; Bontognali, Tomaso R.R.... more authors ... less authors ( Royal Society of Chemistry , 2021 , Article)Dolomite is a common Mg-rich carbonate in the geological record, but the mechanism of its formation remains unclear. At low temperature, the incorporation of magnesium ions into the carbonate minerals necessary to form ...