A Faulted Peneplane in Fergana: A Review and Discussion
Planed surfaces on areas of folded and faulted Paleozoic limestones constitute an important part of the present topography of the southern edge of the Fergana basin in Russian Turkestan. D. I. Mushketov, on the basis of evidence here reviewed, gives the interpretation that the surfaces are parts of a peneplane which was formed before Upper Cretaceous times and has since been faulted and partially stripped of its covering of later sediments. Observations of other geologists which tend to confirm or reject the conclusions of Mushketov are summarized. A discussion of the agents which produced the peneplane leads to the conclusion that it was formed by normal stream erosion.