Examples of lithified rockslides


Carbonate-lithic rockslide deposits and their phenomena of lithification (status September 2008).

Rockslide name (location)

Phenomena of lithification

Prospect for U/Th dating

     

Fern Pass (Austria)

Patches of aragonite- and calcite- cemented breccias below boulders (‘underboulder breccias’)

Proven: 4150 ± 100 a

(Ostermann et al., 2007)

     

Flims (Switzerland)

 

Largest rockslide of the Alps

Patches and layers with calcite cementation

High, but significance of potential age uncertain

     

Mariastein (Austria)

Underboulder breccias

Moderate

     

Pletzachkopf (Austria)

Underboulder breccias

Moderate

     

Tamins (Switzerland)

(a) Continuous surface layer of breccia up to > 1 m thick

(b) Underboulder breccias

High

     

Tschirgant (Austria)

(a)  Underboulder breccias

(b) Small stalactites and flowstone ridges on underside of boulders

High

     

Pfitsch (Italy)

Metacarbonates

(c) Underboulder breccias

(d) Small stalactites and flowstone ridges

High