Mohammed Boussafir

Rapid reorganization in ocean biogeochemistry off Peru towards the end of the Little Ice Age (2009)

Gutiérrez, D., Sifeddine, Abdelfettah, Field, D., Ortlieb, L., Vargas, Gabriel, Chavez, F.P., ...

Climate and ocean ecosystem variability has been well recognized during the twentieth century but it is unclear if modern ocean biogeochemistry is susceptible to the large, abrupt shifts that...

Carboxylic acid sorption on synthetic clays in marine water: in vitro experiments and implications for organo-clay behaviour under marine conditions (2009)

Drouin, Sylvain, Boussafir, Mohammed, Robert, Jean-Louis, Albéric, Patrick, Durand, Aude

In order to investigate the role of clay minerals in organic matter preservation, the fixation of pure organic compounds on two synthetic low- and high-charge saponites was investigated in laboratory...

Carboxylic acid sorption on synthetic clays in marine water: in vitro experiments and implications for organo-clay behaviour under marine conditions (2009)

Drouin, Sylvain, Boussafir, Mohammed, Robert, Jean-Louis, Albéric, Patrick, Durand, Aude

In order to investigate the role of clay minerals in organic matter preservation, the fixation of pure organic compounds on two synthetic low- and high-charge saponites was investigated in laboratory...

La matière organique sédimentaire marqueurs d'environnement. Des roches mères pétroligènes aux sédiments organiques actuels. (2008)

Boussafir, Mohammed

Avant de commencer le bilan de mes travaux et les principaux résultats obtenus j'aimerais faire une introduction, un peu à la marge des préoccupations scientifiques ou presque, mais qui permet de...

La matière organique sédimentaire marqueurs d'environnement. Des roches mères pétroligènes aux sédiments organiques actuels. (2008)

Boussafir, Mohammed

Avant de commencer le bilan de mes travaux et les principaux résultats obtenus j'aimerais faire une introduction, un peu à la marge des préoccupations scientifiques ou presque, mais qui permet de...

La matière organique sédimentaire marqueurs d'environnement. Des roches mères pétroligènes aux sédiments organiques actuels. (2008)

Boussafir, Mohammed

Avant de commencer le bilan de mes travaux et les principaux résultats obtenus j'aimerais faire une introduction, un peu à la marge des préoccupations scientifiques ou presque, mais qui permet de...

Laminated sediments from the central Peruvian continental slope: A 500 year record of upwelling system productivity, terrestrial runoff and redox conditions (2008)

Sifeddine, Abdelfettah, Gutiérrez, D., Ortlieb, L., Boucher, H., Velazco, F., Field, D., ...

Sedimentological studies including X-ray digital analyses, mineralogy, inorganic contents, and organic geochemistry on cores of laminated sediments accumulated in the oxygen minimum zone of the...

Laminated sediments from the central Peruvian continental slope: A 500 year record of upwelling system productivity, terrestrial runoff and redox conditions (2008)

Sifeddine, Abdelfettah, Gutiérrez, D., Ortlieb, L., Boucher, H., Velazco, F., Field, D., ...

Sedimentological studies including X-ray digital analyses, mineralogy, inorganic contents, and organic geochemistry on cores of laminated sediments accumulated in the oxygen minimum zone of the...

La matière organique sédimentaire marqueurs d'environnement. Des roches mères pétroligènes aux sédiments organiques actuels. (2008)

Boussafir, Mohammed

Avant de commencer le bilan de mes travaux et les principaux résultats obtenus j'aimerais faire une introduction, un peu à la marge des préoccupations scientifiques ou presque, mais qui permet de...

Contrasted distributions of triterpene derivatives in the sediments of Lake Caçó reflect paleoenvironmental changes during the last 20,000 yrs in NE Brazil. (2007)

Jacob, Jérémy, Disnar, Jean-Robert, Boussafir, Mohammed, Luiza Spadano Albuquerque, Ana, Sifeddine, Abdelfettah, Turcq, Bruno

Lipid fractions extracted from sediment layers deposited in a small Brazilian lake during the last 20,000 yrs were investigated by gas chromatography-mass pectrometry. Considerable differences in the...

Paleohydrological changes during the last deglaciation in Northern Brazil (2007)

Jacob, Jérémy, Huang, Yongsong, Disnar, Jean-Robert, Sifeddine, Abdelfettah, Boussafir, Mohammed, Luiza Spadano Albuquerque, Ana, ...

We here report a reconstruction of hydrological balance variations in Northern Brazil for the last 20 ka deduced from the D values of aquatic and land plant molecules extracted from the...

Contrasted distributions of triterpene derivatives in the sediments of Lake Caçó reflect paleoenvironmental changes during the last 20,000 yrs in NE Brazil. (2007)

Jacob, Jérémy, Disnar, Jean-Robert, Boussafir, Mohammed, Luiza Spadano Albuquerque, Ana, Sifeddine, Abdelfettah, Turcq, Bruno

Lipid fractions extracted from sediment layers deposited in a small Brazilian lake during the last 20,000 yrs were investigated by gas chromatography-mass pectrometry. Considerable differences in the...

Paleohydrological changes during the last deglaciation in Northern Brazil (2007)

Jacob, Jérémy, Huang, Yongsong, Disnar, Jean-Robert, Sifeddine, Abdelfettah, Boussafir, Mohammed, Luiza Spadano Albuquerque, Ana, ...

We here report a reconstruction of hydrological balance variations in Northern Brazil for the last 20 ka deduced from the D values of aquatic and land plant molecules extracted from the...

Contrasted distributions of triterpene derivatives in the sediments of Lake Caçó reflect paleoenvironmental changes during the last 20,000 yrs in NE Brazil. (2007)

Jacob, Jérémy, Disnar, Jean-Robert, Boussafir, Mohammed, Luiza Spadano Albuquerque, Ana, Sifeddine, Abdelfettah, Turcq, Bruno

Lipid fractions extracted from sediment layers deposited in a small Brazilian lake during the last 20,000 yrs were investigated by gas chromatography-mass pectrometry. Considerable differences in the...

Derivatives of triterpenes formed during diagenesis in tropical lacustrine recent sediments (Lake Caçó, Brazil). (2006)

Jacob, Jérémy, Disnar, Jean-Robert, Boussafir, Mohammed, Luiza Spadano Albuquerque, Ana, Sifeddine, Abdelfettah, Turcq, Bruno

Lipid fractions extracted from sediment layers deposited in a small Brazilian lake during the last 20,000 yrs, were investigated by gas chromatography-mass spectrometry. Considerable differences in...

Derivatives of triterpenes formed during diagenesis in tropical lacustrine recent sediments (Lake Caçó, Brazil). (2006)

Jacob, Jérémy, Disnar, Jean-Robert, Boussafir, Mohammed, Luiza Spadano Albuquerque, Ana, Sifeddine, Abdelfettah, Turcq, Bruno

Lipid fractions extracted from sediment layers deposited in a small Brazilian lake during the last 20,000 yrs, were investigated by gas chromatography-mass spectrometry. Considerable differences in...

Anoxic sediments off Central Peru record interannual to multidecadal changes of climate and upwelling ecosystem during the last two centuries. (2006)

Gutiérrez, D., Sifeddine, Abdelfettah, Reyss, J.L., Vargas, Gabriel, Velazco, F., Salvatteci, R., ...

High-resolution paleo-environmental and paleoecological archives in laminated sequences are present in selected areas from the upper continental Peruvian margin within the oxygen minimum zone. We...

Anoxic sediments off Central Peru record interannual to multidecadal changes of climate and upwelling ecosystem during the last two centuries. (2006)

Gutiérrez, D., Sifeddine, Abdelfettah, Reyss, J.L., Vargas, Gabriel, Velazco, F., Salvatteci, R., ...

High-resolution paleo-environmental and paleoecological archives in laminated sequences are present in selected areas from the upper continental Peruvian margin within the oxygen minimum zone. We...

Derivatives of triterpenes formed during diagenesis in tropical lacustrine recent sediments (Lake Caçó, Brazil). (2006)

Jacob, Jérémy, Disnar, Jean-Robert, Boussafir, Mohammed, Luiza Spadano Albuquerque, Ana, Sifeddine, Abdelfettah, Turcq, Bruno

Lipid fractions extracted from sediment layers deposited in a small Brazilian lake during the last 20,000 yrs, were investigated by gas chromatography-mass spectrometry. Considerable differences in...

Anoxic sediments off Central Peru record interannual to multidecadal changes of climate and upwelling ecosystem during the last two centuries. (2006)

Gutiérrez, D., Sifeddine, Abdelfettah, Reyss, J.L., Vargas, Gabriel, Velazco, F., Salvatteci, R., ...

High-resolution paleo-environmental and paleoecological archives in laminated sequences are present in selected areas from the upper continental Peruvian margin within the oxygen minimum zone. We...

Anoxic sediments off Central Peru record interannual to multidecadal changes of climate and upwelling ecosystem during the last two centuries. (2006)

Gutiérrez, D., Sifeddine, Abdelfettah, Reyss, J.L., Vargas, Gabriel, Velazco, F., Salvatteci, R., ...

High-resolution paleo-environmental and paleoecological archives in laminated sequences are present in selected areas from the upper continental Peruvian margin within the oxygen minimum zone. We...

Anoxic sediments off Central Peru record interannual to multidecadal changes of climate and upwelling ecosystem during the last two centuries (2006)

Gutiérrez, D., Sifeddine, A., Reyss, J. L., Vargas, G., Velazco, F., Salvatteci, R., ...

High-resolution paleo-environmental and paleo-ecological archives in laminated sequences are present in selected areas from the upper continental Peruvian margin within the oxygen minimum zone. We...

Anoxic sediments off Central Peru record interannual to multidecadal changes of climate and upwelling ecosystem during the last two centuries (2006)

Gutiérrez, D., Sifeddine, A., Reyss, J. L., Vargas, G., Velazco, F., Salvatteci, R., ...

High-resolution paleo-environmental and paleo-ecological archives in laminated sequences are present in selected areas from the upper continental Peruvian margin within the oxygen minimum zone. We...

Pentacyclic triterpene methyl ethers in recent lacustrine sediments (Lagoa do Caçó, Brazil). (2005)

Jacob, Jérémy, Disnar, Jean-Robert, Boussafir, Mohammed, Luiza Spadano Albuquerque, Ana, Sifeddine, Abdelfettah, Turcq, Bruno

The lipid extracts of sediments collected from the Quaternary filling of a tropical lacustrine series (Lagoa do Caçó, Brazil) were investigated by gas chromatography-mass spectrometry (GC-MS)....

Calibration of organic signal in sedimentary lacustrine records. Molecular comparison between actual producers, dissolved organic matter and sedimentary organic matter (Lac Pavin; Massif Central Français) (2005)

Boussafir, Mohammed, Drouin, Sylvain, Robert, J.L, Albéric, Patrick

Paleoenvironmental studies undertaken in the past few years on lacustrine sediments indicate highly complex organic records. Indeed, the organic sources in lacustrine environments are numerous and...

Sorption of organic matter on clay minerals in aquatic system and influence on sedimentary organic preservation. An example of lacustrine environment (Lac Pavin, France) (2005)

Drouin, Sylvain, Boussafir, Mohammed, Robert, Jean-Louis, Albéric, Patrick

Sorption of organic molecules on clay surfaces in aquatic environment influence organic sedimentation fluxes. It is well known that mineral sorption affects transport of natural organic matter to...

Calibration of organic signal in sedimentary lacustrine records. Molecular comparison between actual producers, dissolved organic matter and sedimentary organic matter (Lac Pavin; Massif Central Français) (2005)

Boussafir, Mohammed, Drouin, Sylvain, Robert, J.L, Albéric, Patrick

Paleoenvironmental studies undertaken in the past few years on lacustrine sediments indicate highly complex organic records. Indeed, the organic sources in lacustrine environments are numerous and...

Sorption of organic matter on clay minerals in aquatic system and influence on sedimentary organic preservation. An example of lacustrine environment (Lac Pavin, France) (2005)

Drouin, Sylvain, Boussafir, Mohammed, Robert, Jean-Louis, Albéric, Patrick

Sorption of organic molecules on clay surfaces in aquatic environment influence organic sedimentation fluxes. It is well known that mineral sorption affects transport of natural organic matter to...

Cenomanian–Turonian organic sedimentation in North-West Africa: A comparison between the Tarfaya (Morocco) and Senegal Basins. (2005)

Khamli, N., Disnar, Jean-Robert, Laggoun-Défarge, Fatima, Boussafir, Mohammed

The Cenomanian–Turonian Oceanic Anoxic Event was recognised in North Western Africa in various depositional settings from abyssal areas to continental shelves. To derive information on environmental...

Pentacyclic triterpene methyl ethers in recent lacustrine sediments (Lagoa do Caçó, Brazil). (2005)

Jacob, Jérémy, Disnar, Jean-Robert, Boussafir, Mohammed, Luiza Spadano Albuquerque, Ana, Sifeddine, Abdelfettah, Turcq, Bruno

The lipid extracts of sediments collected from the Quaternary filling of a tropical lacustrine series (Lagoa do Caçó, Brazil) were investigated by gas chromatography-mass spectrometry (GC-MS)....

Calibration of organic signal in sedimentary lacustrine records. Molecular comparison between actual producers, dissolved organic matter and sedimentary organic matter (Lac Pavin; Massif Central Français) (2005)

Boussafir, Mohammed, Drouin, Sylvain, Robert, J.L, Albéric, Patrick

Paleoenvironmental studies undertaken in the past few years on lacustrine sediments indicate highly complex organic records. Indeed, the organic sources in lacustrine environments are numerous and...

Sorption of organic matter on clay minerals in aquatic system and influence on sedimentary organic preservation. An example of lacustrine environment (Lac Pavin, France) (2005)

Drouin, Sylvain, Boussafir, Mohammed, Robert, Jean-Louis, Albéric, Patrick

Sorption of organic molecules on clay surfaces in aquatic environment influence organic sedimentation fluxes. It is well known that mineral sorption affects transport of natural organic matter to...

Cenomanian–Turonian organic sedimentation in North-West Africa: A comparison between the Tarfaya (Morocco) and Senegal Basins. (2005)

Khamli, N., Disnar, Jean-Robert, Laggoun-Défarge, Fatima, Boussafir, Mohammed

The Cenomanian–Turonian Oceanic Anoxic Event was recognised in North Western Africa in various depositional settings from abyssal areas to continental shelves. To derive information on environmental...

Pentacyclic triterpene methyl ethers in recent lacustrine sediments (Lagoa do Caçó, Brazil). (2005)

Jacob, Jérémy, Disnar, Jean-Robert, Boussafir, Mohammed, Luiza Spadano Albuquerque, Ana, Sifeddine, Abdelfettah, Turcq, Bruno

The lipid extracts of sediments collected from the Quaternary filling of a tropical lacustrine series (Lagoa do Caçó, Brazil) were investigated by gas chromatography-mass spectrometry (GC-MS)....

Sorption of organic matter on clay minerals in aquatic system and influence on sedimentary organic preservation. An example of lacustrine environment (Lac Pavin, France) (2005)

Drouin, Sylvain, Boussafir, Mohammed, Robert, Jean-Louis, Albéric, Patrick

Sorption of organic molecules on clay surfaces in aquatic environment influence organic sedimentation fluxes. It is well known that mineral sorption affects transport of natural organic matter to...

Calibration of organic signal in sedimentary lacustrine records. Molecular comparison between actual producers, dissolved organic matter and sedimentary organic matter (Lac Pavin; Massif Central Français) (2005)

Boussafir, Mohammed, Drouin, Sylvain, Robert, J.L, Albéric, Patrick

Paleoenvironmental studies undertaken in the past few years on lacustrine sediments indicate highly complex organic records. Indeed, the organic sources in lacustrine environments are numerous and...

Cenomanian–Turonian organic sedimentation in North-West Africa: A comparison between the Tarfaya (Morocco) and Senegal Basins. (2005)

Khamli, N., Disnar, Jean-Robert, Laggoun-Défarge, Fatima, Boussafir, Mohammed

The Cenomanian–Turonian Oceanic Anoxic Event was recognised in North Western Africa in various depositional settings from abyssal areas to continental shelves. To derive information on environmental...

Pentacyclic triterpene methyl ethers in recent lacustrine sediments (Lagoa do Caçó, Brazil). (2005)

Jacob, Jérémy, Disnar, Jean-Robert, Boussafir, Mohammed, Luiza Spadano Albuquerque, Ana, Sifeddine, Abdelfettah, Turcq, Bruno

The lipid extracts of sediments collected from the Quaternary filling of a tropical lacustrine series (Lagoa do Caçó, Brazil) were investigated by gas chromatography-mass spectrometry (GC-MS)....

Onocerane testifies to dry climatic events during the Quaternary in the Tropics. (2004)

Jacob, Jérémy, Disnar, Jean-Robert, Boussafir, Mohammed, Ledru, Marie-Pierre, Luiza Spadano Albuquerque, Ana, Sifeddine, Abdelfettah, ...

An unusual molecular fossil (onocerane I) has been detected for the first time in Quaternary lacustrine sediments (Lagoa do Caçó, NE Brazil). This molecule was initially thought to attest to the...

Major environmental changes recorded by lacustrine sedimentary organic matter since the Last Glacial Maximum near the Equator (Lagoa do Caçó, NE Brazil). (2004)

Jacob, Jérémy, Disnar, Jean-Robert, Boussafir, Mohammed, Sifeddine, Abdelfettah, Turcq, Bruno, Luiza Spadano Albuquerque, Ana

Sediment samples collected along a 6-m core, drilled in the deepest part of the Lagoa do Caçó (NE Brazil), have been investigated in order to determine source(s) and degradation conditions of the...

Reconstruction of pAST climates from sedimentary biomarkers. Ancient molecules for past climate reconstructions: a large field of application for spectroscopic methods. (2004)

Jacob, Jérémy, Disnar, Jean-Robert, Huang, Yongsong, Boussafir, Mohammed, Sifeddine, Abdelfettah, Luiza Spadano Albuquerque, Ana, ...

Although we have now a better picture of past climates, there are still numerous questions that remain unsolved. These uncertainties primarily arise from the possible human impact on climate...

Biomarqueurs et isotopie moléculaire dans les archives lacustres : acquis récents et perspectives d'application. (2004)

Jacob, Jérémy, Disnar, Jean-Robert, Boussafir, Mohammed

Documenter les variations du climat et leurs impacts sur les écosystèmes reste un enjeu majeur sur le continent, et ce à différentes échelles de temps et d'espace. En particulier, l'estimation...

Recent sedimentation of organic matter along the S-E Atlantic margin : a key for understanding deep offshore petroleum source rocks. (2004)

Baudin, François, Blanke, R., Pichevin, Laetitia, Tranier, J., Bertrand, Philippe, Disnar, Jean-Robert, ...

Classical views for the deposition of organic-rich sediments in deep-sea environments invoke two principal types of oceanographic and sedimentologic settings. The first is confined basins in which...

Recent sedimentation of organic matter along the S-E Atlantic margin : a key for understanding deep offshore petroleum source rocks. (2004)

Baudin, François, Blanke, R., Pichevin, Laetitia, Tranier, J., Bertrand, Philippe, Disnar, Jean-Robert, ...

Classical views for the deposition of organic-rich sediments in deep-sea environments invoke two principal types of oceanographic and sedimentologic settings. The first is confined basins in which...

Organic matter accumulation and preservation controls in a deep sea modern environment: an example from Namibian slope sediments. (2004)

Pichevin, Laetitia, Bertrand, Philippe, Boussafir, Mohammed, Disnar, Jean-Robert

The Lüderitz upwelling cell is presently the most productive area of the Benguela current system and abundant organic matter (OM) accumulates on the adjacent slope sediments even at great water...

Major environmental changes recorded by lacustrine sedimentary organic matter since the Last Glacial Maximum near the Equator (Lagoa do Caçó, NE Brazil). (2004)

Jacob, Jérémy, Disnar, Jean-Robert, Boussafir, Mohammed, Sifeddine, Abdelfettah, Turcq, Bruno, Luiza Spadano Albuquerque, Ana

Sediment samples collected along a 6-m core, drilled in the deepest part of the Lagoa do Caçó (NE Brazil), have been investigated in order to determine source(s) and degradation conditions of the...

Onocerane testifies to dry climatic events during the Quaternary in the Tropics. (2004)

Jacob, Jérémy, Disnar, Jean-Robert, Boussafir, Mohammed, Ledru, Marie-Pierre, Luiza Spadano Albuquerque, Ana, Sifeddine, Abdelfettah, ...

An unusual molecular fossil (onocerane I) has been detected for the first time in Quaternary lacustrine sediments (Lagoa do Caçó, NE Brazil). This molecule was initially thought to attest to the...

Recent sedimentation of organic matter along the S-E Atlantic margin : a key for understanding deep offshore petroleum source rocks. (2004)

Baudin, François, Blanke, R., Pichevin, Laetitia, Tranier, J., Bertrand, Philippe, Disnar, Jean-Robert, ...

Classical views for the deposition of organic-rich sediments in deep-sea environments invoke two principal types of oceanographic and sedimentologic settings. The first is confined basins in which...

Organic matter accumulation and preservation controls in a deep sea modern environment: an example from Namibian slope sediments. (2004)

Pichevin, Laetitia, Bertrand, Philippe, Boussafir, Mohammed, Disnar, Jean-Robert

The Lüderitz upwelling cell is presently the most productive area of the Benguela current system and abundant organic matter (OM) accumulates on the adjacent slope sediments even at great water...

Major environmental changes recorded by lacustrine sedimentary organic matter since the Last Glacial Maximum near the Equator (Lagoa do Caçó, NE Brazil). (2004)

Jacob, Jérémy, Disnar, Jean-Robert, Boussafir, Mohammed, Sifeddine, Abdelfettah, Turcq, Bruno, Luiza Spadano Albuquerque, Ana

Sediment samples collected along a 6-m core, drilled in the deepest part of the Lagoa do Caçó (NE Brazil), have been investigated in order to determine source(s) and degradation conditions of the...

Onocerane testifies to dry climatic events during the Quaternary in the Tropics. (2004)

Jacob, Jérémy, Disnar, Jean-Robert, Boussafir, Mohammed, Ledru, Marie-Pierre, Luiza Spadano Albuquerque, Ana, Sifeddine, Abdelfettah, ...

An unusual molecular fossil (onocerane I) has been detected for the first time in Quaternary lacustrine sediments (Lagoa do Caçó, NE Brazil). This molecule was initially thought to attest to the...

Recent sedimentation of organic matter along the SE Atlantic Margin : A key for understanding deep offshore petroleum source rocks. (2004)

Baudin, François, Blanke, Raphaël, Pichevin, Laetitia, Tranier, J., Bertrand, Philippe, Disnar, Jean-Robert, ...

Classical views for the deposition of organic-rich sediments in deep-sea environments invoke two principal types of oceanographic and sedimentologic settings. The first is confined basins in which...

Recent sedimentation of organic matter along the SE Atlantic Margin : A key for understanding deep offshore petroleum source rocks. (2004)

Baudin, François, Blanke, Raphaël, Pichevin, Laetitia, Tranier, J., Bertrand, Philippe, Disnar, Jean-Robert, ...

Classical views for the deposition of organic-rich sediments in deep-sea environments invoke two principal types of oceanographic and sedimentologic settings. The first is confined basins in which...

Organic matter accumulation and preservation controls in a deep sea modern environment: an example from Namibian slope sediments. (2004)

Pichevin, Laetitia, Bertrand, Philippe, Boussafir, Mohammed, Disnar, Jean-Robert

The Lüderitz upwelling cell is presently the most productive area of the Benguela current system and abundant organic matter (OM) accumulates on the adjacent slope sediments even at great water...

Onocerane testifies to dry climatic events during the Quaternary in the Tropics. (2004)

Jacob, Jérémy, Disnar, Jean-Robert, Boussafir, Mohammed, Ledru, Marie-Pierre, Luiza Spadano Albuquerque, Ana, Sifeddine, Abdelfettah, ...

An unusual molecular fossil (onocerane I) has been detected for the first time in Quaternary lacustrine sediments (Lagoa do Caçó, NE Brazil). This molecule was initially thought to attest to the...

Major environmental changes recorded by lacustrine sedimentary organic matter since the Last Glacial Maximum near the Equator (Lagoa do Caçó, NE Brazil). (2004)

Jacob, Jérémy, Disnar, Jean-Robert, Boussafir, Mohammed, Sifeddine, Abdelfettah, Turcq, Bruno, Luiza Spadano Albuquerque, Ana

Sediment samples collected along a 6-m core, drilled in the deepest part of the Lagoa do Caçó (NE Brazil), have been investigated in order to determine source(s) and degradation conditions of the...

Onocerane I witnesses to dry climatic phases at the end of Last Glacial Maximum and during the Younger Dryas in Northern Brazil. (2003)

Jacob, Jérémy, Disnar, Jean-Robert, Boussafir, Mohammed, Ledru, Marie-Pierre, Sifeddine, Abdelfettah, Luiza Spadano Albuquerque, Ana, ...

Onocerane-related compounds are very uncommon molecules that are seldom encountered in the plant kingdom and even more rarely in sediments. In living plants, onoceranoids have been isolated from taxa...

Distribution et état de préservation de la matière organique sédimentaire des sédiments superficiels du Lac Caço (Maranão, Brésil). Production/diagenèse organique précoce et remplissage sédimentaire lacustre (2003)

Boussafir, Mohammed, Foudi, Merouane, Jacob, Jérémy, Disnar, Jean-Robert, Sifeddine, Abdelfettah, Luiza Spadano Albuquerque, Ana

Le Lac Caço est situé au Nord-Est du Brésil, dans l'Etat de Maranhaõ, sous l'Equateur (2°58S 43°25 W), en bordure de la forêt amazonienne et à 80 km de la côte Atlantique. Son altitude ne...

Distribution et état de préservation de la matière organique sédimentaire des sédiments superficiels du Lac Caço (Maranão, Brésil). Production/diagenèse organique précoce et remplissage sédimentaire lacustre (2003)

Boussafir, Mohammed, Foudi, Merouane, Jacob, Jérémy, Disnar, Jean-Robert, Sifeddine, Abdelfettah, Luiza Spadano Albuquerque, Ana

Le Lac Caço est situé au Nord-Est du Brésil, dans l'Etat de Maranhaõ, sous l'Equateur (2°58S 43°25 W), en bordure de la forêt amazonienne et à 80 km de la côte Atlantique. Son altitude ne...

Onocerane I witnesses to dry climatic phases at the end of Last Glacial Maximum and during the Younger Dryas in Northern Brazil. (2003)

Jacob, Jérémy, Disnar, Jean-Robert, Boussafir, Mohammed, Ledru, Marie-Pierre, Sifeddine, Abdelfettah, Luiza Spadano Albuquerque, Ana, ...

Onocerane-related compounds are very uncommon molecules that are seldom encountered in the plant kingdom and even more rarely in sediments. In living plants, onoceranoids have been isolated from taxa...

Distribution et état de préservation de la matière organique sédimentaire des sédiments superficiels du Lac Caço (Maranão, Brésil). Production/diagenèse organique précoce et remplissage sédimentaire lacustre (2003)

Boussafir, Mohammed, Foudi, Merouane, Jacob, Jérémy, Disnar, Jean-Robert, Sifeddine, Abdelfettah, Luiza Spadano Albuquerque, Ana

Le Lac Caço est situé au Nord-Est du Brésil, dans l'Etat de Maranhaõ, sous l'Equateur (2°58S 43°25 W), en bordure de la forêt amazonienne et à 80 km de la côte Atlantique. Son altitude ne...

Onocerane I witnesses to dry climatic phases at the end of Last Glacial Maximum and during the Younger Dryas in Northern Brazil. (2003)

Jacob, Jérémy, Disnar, Jean-Robert, Boussafir, Mohammed, Ledru, Marie-Pierre, Sifeddine, Abdelfettah, Luiza Spadano Albuquerque, Ana, ...

Onocerane-related compounds are very uncommon molecules that are seldom encountered in the plant kingdom and even more rarely in sediments. In living plants, onoceranoids have been isolated from taxa...

Nouveaux marqueurs moléculaires témoins des successions végétales en domaine tropical. Exemple du Lac Caçó (Nord Est Brésil) depuis le DMG. (2003)

Jacob, Jérémy, Disnar, Jean-Robert, Boussafir, Mohammed, Sifeddine, Abdelfettah, Luiza Spadano Albuquerque, Ana, Turcq, Bruno

La reconstitution des climats anciens nécessite soit un accès direct aux paramètres qui les définissent (température, humidité…) soit, de façon indirecte, aux environnements et écosystèmes...

Nouveaux marqueurs moléculaires témoins des successions végétales en domaine tropical. Exemple du Lac Caçó (Nord Est Brésil) depuis le DMG. (2003)

Jacob, Jérémy, Disnar, Jean-Robert, Boussafir, Mohammed, Sifeddine, Abdelfettah, Luiza Spadano Albuquerque, Ana, Turcq, Bruno

La reconstitution des climats anciens nécessite soit un accès direct aux paramètres qui les définissent (température, humidité…) soit, de façon indirecte, aux environnements et écosystèmes...

Nouveaux marqueurs moléculaires témoins des successions végétales en domaine tropical. Exemple du Lac Caçó (Nord Est Brésil) depuis le DMG. (2003)

Jacob, Jérémy, Disnar, Jean-Robert, Boussafir, Mohammed, Sifeddine, Abdelfettah, Luiza Spadano Albuquerque, Ana, Turcq, Bruno

La reconstitution des climats anciens nécessite soit un accès direct aux paramètres qui les définissent (température, humidité…) soit, de façon indirecte, aux environnements et écosystèmes...

Nouveaux marqueurs moléculaires témoins des successions végétales en domaine tropical. Exemple du Lac Caçó (Nord Est Brésil) depuis le DMG. (2003)

Jacob, Jérémy, Disnar, Jean-Robert, Boussafir, Mohammed, Sifeddine, Abdelfettah, Luiza Spadano Albuquerque, Ana, Turcq, Bruno

La reconstitution des climats anciens nécessite soit un accès direct aux paramètres qui les définissent (température, humidité…) soit, de façon indirecte, aux environnements et écosystèmes...

Distribution et état de préservation de la matière organique sédimentaire des sédiments superficiels du Lac Caço (Maranão, Brésil). Production/diagenèse organique précoce et remplissage sédimentaire lacustre (2003)

Boussafir, Mohammed, Foudi, Merouane, Jacob, Jérémy, Disnar, Jean-Robert, Sifeddine, Abdelfettah, Luiza Spadano Albuquerque, Ana

Le Lac Caço est situé au Nord-Est du Brésil, dans l'Etat de Maranhaõ, sous l'Equateur (2°58S 43°25 W), en bordure de la forêt amazonienne et à 80 km de la côte Atlantique. Son altitude ne...

Onocerane I witnesses to dry climatic phases at the end of Last Glacial Maximum and during the Younger Dryas in Northern Brazil. (2003)

Jacob, Jérémy, Disnar, Jean-Robert, Boussafir, Mohammed, Ledru, Marie-Pierre, Sifeddine, Abdelfettah, Luiza Spadano Albuquerque, Ana, ...

Onocerane-related compounds are very uncommon molecules that are seldom encountered in the plant kingdom and even more rarely in sediments. In living plants, onoceranoids have been isolated from taxa...

Enregistrement des variations paléoenvironnementales durant le Quaternaire récent en domaine intertropical (Lac Caço, Brésil) : Apports de la géochimie organique globale et moléculaire. (2001)

Jacob, Jérémy, Disnar, Jean-Robert, Boussafir, Mohammed, Sifeddine, Abdelfettah, Spadano Albuquerque, Ana-Luiza, Turcq, Bruno

Le Lac Caço (Etat de Marañhao, Brésil), situé dans la zone équatoriale, fait l'objet d'études pluridisciplinaires (de sédimentologie, palynologie, microbiologie, géophysique et géochimie)...

Enregistrement des variations paléoenvironnementales durant le Quaternaire récent en domaine intertropical (Lac Caço, Brésil) : Apports de la géochimie organique globale et moléculaire. (2001)

Jacob, Jérémy, Disnar, Jean-Robert, Boussafir, Mohammed, Sifeddine, Abdelfettah, Spadano Albuquerque, Ana-Luiza, Turcq, Bruno

Le Lac Caço (Etat de Marañhao, Brésil), situé dans la zone équatoriale, fait l'objet d'études pluridisciplinaires (de sédimentologie, palynologie, microbiologie, géophysique et géochimie)...

Enregistrement des variations paléoenvironnementales durant le Quaternaire récent en domaine intertropical (Lac Caço, Brésil) : Apports de la géochimie organique globale et moléculaire. (2001)

Jacob, Jérémy, Disnar, Jean-Robert, Boussafir, Mohammed, Sifeddine, Abdelfettah, Spadano Albuquerque, Ana-Luiza, Turcq, Bruno

Le Lac Caço (Etat de Marañhao, Brésil), situé dans la zone équatoriale, fait l'objet d'études pluridisciplinaires (de sédimentologie, palynologie, microbiologie, géophysique et géochimie)...

Pyrobitumen occurrence and formation in a Cambro–Ordovician sandstone reservoir, Fahud Salt Basin, North Oman (2000)

Huc, Alain-Yves, Nederlof, Peter, Debarre, Romain, Carpentier, Bernard, Boussafir, Mohammed, Laggoun-Défarge, Fatima, ...

The Cambro–Ordovician Barik Sandstone reservoirs in the Fahud Salt Basin in Oman contain bitumen which may fill up to 40% of the porosity. In well Jaleel-1, this bitumen was isolated (according to...

Pyrobitumen occurrence and formation in a Cambro–Ordovician sandstone reservoir, Fahud Salt Basin, North Oman (2000)

Huc, Alain-Yves, Nederlof, Peter, Debarre, Romain, Carpentier, Bernard, Boussafir, Mohammed, Laggoun-Défarge, Fatima, ...

The Cambro–Ordovician Barik Sandstone reservoirs in the Fahud Salt Basin in Oman contain bitumen which may fill up to 40% of the porosity. In well Jaleel-1, this bitumen was isolated (according to...