Lorence Collins wrote in Perspectives on Science and Christian Faith that the formation's "petrified wood" is basalt and its supposed iron fittings are cemented mineral grains.
Lorence G. CollinsDurupınar formationSupported1 source
Geologist Lorence Collins and David Fasold concluded in the Journal of Geoscience Education that the formation is a natural doubly plunging syncline and the "anchor" stones are local andesite.
Lorence G. Collins, David FasoldDurupınar formationSupported3 sources