inscription
PORTAIL D'INFORMATION GÉOGRAPHIQUE

Résultats de la recherche (23 résultats)

Affinez votre recherche

Par Collection Par Auteur Par Date Par Sujet Par Titre
  • Biomineralization processes of iron and manganese. Modern and ancient environments
  • Biogeochemistry ; Freshwater environment ; Geochemistry ; Iron ; Manganese ; Micro-organism ; Organic materials ; Palaeo-environment ; Sedimentology
  • Biogéochimie ; Fer ; Géochimie ; Manganèse ; Matière organique ; Micro-organisme ; Milieu dulçaquatique ; Paléo-environnement ; Sédimentologie
  • This paper summarizes the results of investigations on microbially catalyzed Fe(III) and Mn(IV) reduction in both recent and ancient sedimentary environments.
  • Microbial accumulation of iron and manganese in different aquatic environments: an electron optical study
  • Biomineralization processes of iron and manganese. Modern and ancient environments
  • Biogeochemistry ; Freshwater environment ; Geochemistry ; Hot springs ; Iron ; Manganese ; Micro-organism ; Microstructure ; Mineralization
  • Production of iron sulfide minerals by magnetotactic bacteria in sulfidic environments
  • Biomineralization processes of iron and manganese. Modern and ancient environments
  • Biogéochimie ; Eutrophisation ; Fer ; Géochimie ; Indicateur ; Micro-organisme ; Minéralisation ; Paléo-environnement
  • Biogeochemistry ; Eutrophication ; Geochemistry ; Indicator ; Iron ; Micro-organism ; Mineralization ; Palaeo-environment
  • Biomineralization processes of iron and manganese. Modern and ancient environments
  • Biogéochimie ; Ecologie ; Eutrophisation ; Géochimie ; Indicateur ; Micro-organisme ; Minéralisation ; Paléo-environnement ; Sédimentologie
  • Biogeochemistry ; Ecology ; Eutrophication ; Geochemistry ; Indicator ; Micro-organism ; Mineralization ; Palaeo-environment ; Sedimentology
  • Iron minerals in surface environments
  • Biomineralization processes of iron and manganese. Modern and ancient environments
  • This chapter provides a brief overview of the major Fe minerals occurring in earth surface environments where organisms are likely to participate in mineral formation. Microbiological activity is known to cause both the dissolution
  • Biomineralization processes of iron and manganese. Modern and ancient environments
  • The papers in this volume present an overview of the mineral species, possible mechanisms involved in their precipitation, and the range of depositional environments recorded for Fe and Mn minerals in surficial environments. The documented sites
  • range from intracellular to million ton ore bodies. The research thrusts are on modern and on ancient environments because similar biogeochemical mechanisms may have been involved in the formation of the earliest laminated rocks, the banded iron
  • Biomineralization processes of iron and manganese. Modern and ancient environments
  • Action biogène ; Géochimie ; Indicateur ; Paléo-environnement ; Paléo-écologie ; Susceptibilité magnétique ; Sédimentologie
  • Biogenic process ; Geochemistry ; Indicator ; Magnetic susceptibility ; Palaeo-ecology ; Palaeo-environment ; Sedimentology
  • Magnetotactic bacteria apparently only secrete magnetite under conditions of low oxygen and have high turnover rates in nitrate and ammonia-rich environments. These geochemical conditions commonly exist where productive aerobic waters are in contact
  • Manganese minerals in surface environments
  • Biomineralization processes of iron and manganese. Modern and ancient environments
  • Manganese oxide mineral materials, important sources of Mn for man and all manner of living matter, and commonly encountered in surficial environments, are outlined in this chapter. The AA. present a brief overview of the methods of analysis
  • little they understand the processes producing the Mn oxide minerals observed in a range of present and past biogeochemical and pedochemical environments.
  • Interdependence of Mn, Fe, and clay mineral formation on Groote Eylandt, Australia: a model for modern and ancient weathering environments
  • Biomineralization processes of iron and manganese. Modern and ancient environments
  • Argile minéral ; Australie ; Fer ; Géochimie ; Manganèse ; Minéralogie ; Météorisation ; Northern Territory ; Paléo-environnement
  • Australia ; Clay mineral ; Geochemistry ; Iron ; Manganese ; Mineralogy ; Northern Territory ; Palaeo-environment ; Weathering
  • Biomineralization processes of iron and manganese. Modern and ancient environments
  • Action biogène ; Biogéochimie ; Concept ; Géochimie ; Gîtologie ; Manganèse ; Modèle ; Paléo-environnement ; Paléorivage
  • Biogenic process ; Biogeochemistry ; Concept ; Geochemistry ; Manganese ; Model ; Ore geology ; Palaeo-environment ; Palaeoshore
  • Biomineralization processes of iron and manganese. Modern and ancient environments
  • Biogeochemistry ; Geochemistry ; Humid environment ; Iron ; Micro-organism ; Mineralization ; Soil ; Soil classification ; Tidal marsh
  • Biomineralization processes of iron and manganese. Modern and ancient environments
  • The present mineralogical and field aspects of the mixed oxide and oxide Banded Iron-Formations (BIFs) of Bababudans are presented in order to reconstruct depositional environments in which mineralization took place. An attempt is made to show
  • Biomineralization processes of iron and manganese. Modern and ancient environments
  • Biogenic process ; Biogeochemistry ; Geochemistry ; Humid environment ; Manganese ; Micro-organism ; Nodule ; Soil ; United States ; Virginia
  • Biomineralization processes of iron and manganese. Modern and ancient environments
  • Biomineralization processes of iron and manganese. Modern and ancient environments
  • Biomineralization processes of iron and manganese. Modern and ancient environments
  • Biomineralization processes of iron and manganese. Modern and ancient environments
  • Biomineralization processes of iron and manganese. Modern and ancient environments
  • Biomineralization processes of iron and manganese. Modern and ancient environments
  • Biomineralization processes of iron and manganese. Modern and ancient environments