still coming up empty on Mulfords causeway.Route 40?
Look along Union Lake.
Sorry for the slow reply. You aren't the only one interested in Cumberland County rocks. I was in San Francisco, at the American Geophysical Union, presenting on Pine Barrens wind faceted stones. Ventifacts are indicative of strong winds moving abundant sand in a vegetation-free environment, in our case a polar-like desert.
Demitroff M. 2014. “Observations on ventifacts and wind-polished boulders in Pleistocene coversands, ice-marginal New Jersey.” Global Climate Change and Cryospheric Systems III Posters, American Geophysical Union Fall Meeting, Moscone Convention Center, San Francisco, CA, December 15, 2014, C13B-0447.
Moscone Center South, San Francisco
Cheers,
Mark