From the Ruhpolding Radiolarite Group ( " RRG " ) and are found in the Northern Calcareous Alps and in the Penninic of France and Switzerland ( Graub�nden ).
12.
"' Radiolarite "'is a siliceous, comparatively hard, fine-grained, chert-like, and homogeneous sedimentary rock that is composed predominantly of the microscopic remains of radiolarians.
13.
These tasks shed light into their chronology and let the team recover objects that formed part of the grave goods that accompanied the dead : ceramic vessels, awls, radiolarite fragments ( a type of rock that was used to make tools ).
14.
By using radiolarian stratigraphy a more recent study by Wegener, Suzuki & Gawlick ( 2003 ) found a Middle Oxfordian to Lower Kimmeridgian age for the upper red radiolarite, i . e . an absolute age of 159-154 million years BP.
