Search Results - "Vasconcelos, Crisógono"

The importance of microbial mats for dolomite formation in the Dohat Faishakh sabkha, Qatar by Brauchli, Marisa, McKenzie, Judith A., Strohmenger, Christian J., Sadooni, Fadhil, Vasconcelos, Crisógono, Bontognali, Tomaso R. R.

“…The Dohat Faishakh sabkha in Qatar is one of the rare modern environments where it is possible to study the formation of dolomite, a mineral whose origin has…”
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Dolomite formation within microbial mats in the coastal sabkha of Abu Dhabi (United Arab Emirates) by BONTOGNALI, TOMASO R.R, VASCONCELOS, CRISÓGONO, WARTHMANN, ROLF J, BERNASCONI, STEFANO M, DUPRAZ, CHRISTOPHE, STROHMENGER, CHRISTIAN J, McKENZIE, JUDITH A

“…Microbial mediation is the only demonstrated mechanism to precipitate dolomite under Earth surface conditions. A link between microbial activity and dolomite…”
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Lithifying microbial mats in Lagoa Vermelha, Brazil: Modern Precambrian relics? by Vasconcelos, Crisógono, Warthmann, Rolf, McKenzie, Judith A., Visscher, Pieter T., Bittermann, Anne G., van Lith, Yvonne

“…Bacterial populations, microbial and mineral-forming processes, and their products were analyzed in Lagoa Vermelha, Brazil. The microbial mat and underlying…”
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Microbially catalyzed dolomite formation: From near-surface to burial by Petrash, Daniel A., Bialik, Or M., Bontognali, Tomaso R.R., Vasconcelos, Crisógono, Roberts, Jennifer A., McKenzie, Judith A., Konhauser, Kurt O.

“…Over the past century a number of models have been developed to explain the vast stratigraphic distribution of authigenic dolomite. These models include…”
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Depth and controls of Ca-rhodochrosite precipitation in bioturbated sediments of the Eastern Equatorial Pacific, ODP Leg 201, Site 1226 and DSDP Leg 68, Site 503 by MEISTER, PATRICK, BERNASCONI, STEFANO M, AIELLO, IVANO W, VASCONCELOS, CRISÓGONO, MCKENZIE, JUDITH A

“…The occurrence of early diagenetic Ca-rhodochrosite [(Mn,Ca)CO₃] is reported in association with 'griotte'-type nodular limestones from basinal settings in the…”
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Calibration of the dolomite clumped isotope thermometer from 25 to 350°C, and implications for a universal calibration for all (Ca, Mg, Fe)CO3 carbonates by Bonifacie, Magali, Calmels, Damien, Eiler, John M., Horita, Juske, Chaduteau, Carine, Vasconcelos, Crisogono, Agrinier, Pierre, Katz, Amandine, Passey, Benjamin H., Ferry, John M., Bourrand, Jean-Jacques

“…Carbonate clumped isotope thermometry is based on the temperature-dependent formation of 13C18O16O22− ion groups within the lattice of solid carbonate…”
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Organic matter diagenesis and precipitation of Mg-rich carbonate and dolomite in modern hypersaline lagoons linked to climate changes by Areias, Camila, Barbosa, Cátia Fernandes, Cruz, Anna Paula Soares, McKenzie, Judith A., Ariztegui, Daniel, Eglinton, Timothy, Haghipour, Negar, Vasconcelos, Crisógono, Sánchez-Román, Mónica

“…Lipid-biomarkers have been used to reconstruct environmental changes in lacustrine systems on a range of time scales. Lake sediments are excellent archives to…”
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Calibration of the oxygen and clumped isotope thermometers for (proto-)dolomite based on synthetic and natural carbonates by Müller, Inigo A., Rodriguez-Blanco, Juan D., Storck, Julian-Christopher, do Nascimento, Gabriela Santilli, Bontognali, Tomaso R.R., Vasconcelos, Crisogono, Benning, Liane G., Bernasconi, Stefano M.

“…Dolomite is a very common carbonate mineral in ancient sediments, but is rarely found in modern environments. Because of the difficulties in precipitating…”
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Microbial biomineralization processes forming modern Ca:Mg carbonate stromatolites by SPADAFORA, ALESSANDRA, PERRI, EDOARDO, MCKENZIE, JUDITH A, VASCONCELOS, CRISÓGONO

“…Modern Ca:Mg carbonate stromatolites form in association with the microbial mat in the hypersaline coastal lagoon, Lagoa Vermelha (Brazil). The stromatolites,…”
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Amorphous organic matter — Experimental data on formation and the role of microbes by Pacton, Muriel, Gorin, Georges E., Vasconcelos, Crisogono

“…The origin of microscopically-amorphous organic matter (AOM) is problematic. It has been extensively studied because it is the dominant kerogen constituent in…”
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Holocene paleo-redox conditions in a microbial dolomitic lake using benthic foraminifera as bioindicators by François, Daniel, Areias, Camila, Dornelas, Nayara, Sá-Valle, Luiz G.R., Cruz, Anna Paula Soares, Seoane, José Carlos Sícoli, Vasconcelos, Crisógono, Stríkis, Nicolás M., dos Santos, Daniel Souza, Paytan, Adina, Barbosa, Cátia F.

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Microbial mediated formation of Fe-carbonate minerals under extreme acidic conditions by Sánchez-Román, Mónica, Fernández-Remolar, David, Amils, Ricardo, Sánchez-Navas, Antonio, Schmid, Thomas, Martin-Uriz, Patxi San, Rodríguez, Nuria, McKenzie, Judith A., Vasconcelos, Crisogono

“…Discovery of Fe-carbonate precipitation in Rio Tinto, a shallow river with very acidic waters, situated in Huelva, South-western Spain, adds a new dimension to…”
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Presence of sulfate does not inhibit low-temperature dolomite precipitation by Sánchez-Román, Mónica, McKenzie, Judith A., de Luca Rebello Wagener, Angela, Rivadeneyra, Maria A., Vasconcelos, Crisógono

“…The hypothesis that sulfate inhibits dolomite formation evolved from geochemical studies of porewaters from deep-sea sedimentary sequences and has been tested…”
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Viruses as new agents of organomineralization in the geological record by Pacton, Muriel, Wacey, David, Corinaldesi, Cinzia, Tangherlini, Michael, Kilburn, Matt R., Gorin, Georges E., Danovaro, Roberto, Vasconcelos, Crisogono

“…Viruses are the most abundant biological entities throughout marine and terrestrial ecosystems, but little is known about virus–mineral interactions or the…”
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Formation processes of methane-derived authigenic carbonates from the Gulf of Cadiz by Magalhães, Vitor H., Pinheiro, Luis M., Ivanov, Michael K., Kozlova, Elena, Blinova, Valentina, Kolganova, J., Vasconcelos, Crisogono, McKenzie, Judith A., Bernasconi, Stefano M., Kopf, Achim J., Díaz-del-Río, Victor, González, F. Javier, Somoza, Luis

“…The Gulf of Cadiz, NE Atlantic, represents an area of extensive formation of methane-derived authigenic carbonates (MDAC), indicative of fluid seepage. These…”
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The Relationship between Bacterial Sulfur Cycling and Ca/Mg Carbonate Precipitation—Old Tales and New Insights from Lagoa Vermelha and Brejo do Espinho, Brazil by Fichtner, Vanessa, Schurr, Simon L., Strauss, Harald, Vasconcelos, Crisógono, Goetschl, Katja E., Areias, Camila, Barbosa, Catia F., Immenhauser, Adrian

“…Over the few past decades, the concept of microbial sulfur cycling catalyzing the precipitation of CaMg (CO3)2 at low temperatures (<40 °C) has been studied…”
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Experimentally determined biomediated Sr partition coefficient for dolomite: Significance and implication for natural dolomite by Sánchez-Román, Mónica, McKenzie, Judith A., de Luca Rebello Wagener, Angela, Romanek, Christopher S., Sánchez-Navas, Antonio, Vasconcelos, Crisógono

“…Two strains of moderately halophilic bacteria were grown in aerobic culture experiments containing gel medium to determine the Sr partition coefficient between…”
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Building an isoscape based on tooth enamel for human provenance estimation in Brazil by de Oliveira Mascarenhas, Ricardo, Sena-Souza, João Paulo, Bernasconi, Stefano M., McKenzie, Judith A., Vasconcelos, Crisógono, Muniz, Taís Ribeiro, Nogueira e Silva, Matheus Pereira, da Silva Salvador, Fábio Augusto, Rumbelsperger, Anelize Manuela Bahniuk

“…In this study, we present a correlation between δ18OC values of carbonate in tooth enamel samples from the modern Brazilian population and the available δ18ODW…”
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Biomineralization of carbonate and phosphate by moderately halophilic bacteria by Sánchez-Román, Mónica, Rivadeneyra, Maria A, Vasconcelos, Crisogono, McKenzie, Judith A

“…We investigated the precipitation of carbonate and phosphate minerals by 19 species of moderately halophilic bacteria using media with variable Mg²⁺/Ca²⁺…”
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Dolomite-mediating bacterium isolated from the sabkha of Abu Dhabi (UAE) by Bontognali, Tomaso R. R., Vasconcelos, Crisógono, Warthmann, Rolf J., Lundberg, Rebecca, McKenzie, Judith A.

“…Terra Nova, 24, 248–254, 2012 The study of microbe‐mineral interactions and the identification of biominerals in sedimentary rocks provide crucial information…”
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