= Barbed Basem series at least 570 yards acrn = ? 1300' how much is Basem in numbers 10-8 cannot be seen, scale it "Basem" on the basis of geological position beneath the Turfem series (= Klevonian) and the lithology is not opposed to this view. This "Turfem series" appears to be last of eastern limit of syncline. The Basem series is the first of western and much steeper limit. The Turfcon has here a width of 575 feet, but as it is drilled up in the center of the syncline this cannot be the true depth.