Paleontological evaluation

Data evaluation: All specimens will be numbered consecutively, identified and aphonomic parameters evaluated (e.g. size, orientation, etc.). Consequently, the main parameters to evaluate for each specimen are: taxon, fragmentation, size, articulation, shell orientation, shell inclination, chemical dissolution, edge rounding, abrasion, predational boring, endolithic boring, predational peeling, encrustation.

 

Restoring the paleosurface: Data which will be used for this are a thorough assessment of slip direction, magnitude, relative position along the fault and proximity to other faults is expected to provide unique insights into the scaling, growth and interaction of faults in uncemented sediments with low cohesion and high porosity.

 

Age structure and size classes: First preliminary investigations suggest a striking dominance of fully grown, adult specimens of Crassostrea gryphoides and a near absence of juveniles. Stable isotopeprofiles and sclerochronology of selected shells document individual ages between 20 to 30 years (Harzhauser et al., 2010; unpublished data).

 

Sedimentology: The entire section will be documented in great detail. Still about 1.5 m below the shell bed and 3 m above are accessible and available for sampling. The granulometric and the mineralogical analysis of the samples will be done in the sedimentological laboratory of the Geological Survey of Austria.