Meteoritic trigger for Global Mass Wasting During the Middle Ordovician Disputed

The association of widespread mass wasting along 
Middle Ordovician continental margins with a period
of high meteorite influx is disputed in a recent paper
in Gondwana Research. The paper is:

Meinhold, G., A. Arslan, O. Lehnert, and G. M. Stampfli,
2011, Global mass wasting during the Middle Ordovician: 
Meteoritic trigger or plate-tectonic environment?
Gondwana Research. vol. 19, no. 2, pp. 535-541.
http://dx.doi.org/10.1016/j.gr.2010.07.001
http://www.casp.cam.ac.uk/publications/publication-20100603
http://www.casp.cam.ac.uk/people/guido-meinhold

Yours,

Paul H.