Session Programme Meeting Programme Personal Programme Search
Quick Search
Programme Groups
Great Debates
Union Symposia
Educational Symposia
Atmospheric Sciences
Climate: Past, Present, Future
Cryospheric Sciences
Energy, Resources and the Environment
Geochemistry, Mineralogy, Petrology & Volcanology
Geophysical Instrumentation
Hydrological Sciences
Magnetism, Palaeomagnetism, Rock Physics & Geomaterials
Natural Hazards
Nonlinear Processes in Geophysics
Ocean Sciences
Planetary and Solar System Sciences
Soil System Sciences
Solar-Terrestrial Sciences
Stratigraphy, Sedimentology and Palaeontology
Tectonics and Structural Geology
Medal Lectures
Key Note Lectures
Key Note Sessions
Division Business Meetings
Editorial Board Meetings
Townhall Meetings
Splinter Meetings
Union Meetings
  Information - SSP11 Authigenic minerals: sedimentology, geochemistry, origins, distribution and applications (co-sponsored by IAS)

Event Information
Aim: To bring together palaeontologists, sedimentologists, stratigraphers, geochemists and palaeoceanographers to review recent advances in our understanding of the origins of authigenic minerals, and to investigate how this knowledge may be applied to better understand local to global palaeoenvironmental change, and constrain major perturbations in the Earth Surface System.

Background: Authigenic minerals precipitated in situ at, or close to, the sediment/water interface are widespread in the geological record, yet in many cases remarkably little is known about their origin, and exact modern analogues are poorly known or have yet to be identified. Authigenic minerals incorporate a remarkable range of mineral associations, including:

Phosphates: phosphate-rich sediments and phosphorites.

Clay minerals, zeolites and associated minerals: green clays: verdine, glauconite; palagonite, smectite, phillipsite, barite.

Authigenic carbonates: associations with methane and cold seeps; microbial dolomites in lagoonal and oceanic environments.

Iron deposits: ferromanganese deposits, iron crusts, iron sulphides (pyrite, marcasite, iron monosulphides), ironstones.

Themes: Each authigenic mineral suite has its own unique character, but overarching themes include the microbiology of authigenic processes, and linked spatial and temporal variation in authigenic mineral suites. Occurrences of authigenic minerals have applications to sequence stratigraphy and modelling sea-level change, and palaeoenvironmental analysis (interpretations of sedimentation rate, carbon burial flux, bottom-water oxygenation, current energy, bioturbation rate, porewater redox), and they provide evidence of global environmental changes in marine palaeoproductivity, biogeochemical cycles, and ocean-atmosphere interaction.

The event is supported by the International Association of Sedimentologists and will be the first European meeting of the FROMAGE (FRiends Of Marine AuthiGEnesis) SEPM Research Group on Marine Authigenesis.

Preliminary List of Solicited Speakers
Speakers to date include:
Alessandro Amorosi Glaucony in the stratigraphic record
John Compton Benguela upwelling and phosphorite genesis
Kurt Konhauser Bacterial role in BIF diagenesis
Yaacov Nathan C/P organic ratios in phosphorites and related facies
Kevin Taylor Iron-rich authigenic minerals in transgressive sediments
Yuri Zanin Mn-carbonates, glauconite and phosphorites

IAS The International Association of Sedimentologists & FROMAGE SEPM Research Group on Marine Authigenesis

General Statement
The information contained hereafter has been compiled and uploaded by the Session Organizers via the "Organizer Session Form". The Session Organizers have therefore the sole responsibility that this information is true and accurate at the date of publication, and the conference organizer cannot accept any legal responsibility for any errors or omissions that may be made, and he makes no warranty, expressed or implied, with regard to the material published.

Back to Session Programme


©2002-2008 Copernicus Systems + Technology GmbH