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SAMUEL WEIDMAN 



on the large groove, is shown in Figure 3. Other examples of 

 striated boulders were found in the same locality. 



Very fine striations are developed on the limestone floor of the 

 conglomerate in the valley of Honey Creek about a mile below 



Turner Falls (see Fig. 4) . The 

 finely striated floor of the con- 

 glomerate is in the flat bottom 

 of a distinctly U-shaped valley 

 with relatively steep walls 

 rising about 200 feet high. The 

 smooth undulating rock floor 

 covered with a few small 

 patches of conglomerate is 

 shown in Figure 5. 



The history of Honey Creek 

 Valley and others like it on the 

 flanks of the Arbuckle Moun- 

 tains is complex, and deserves 

 a special article in itself. The 

 valley is U-shaped, especially 

 below Turner Falls. It is 

 mainly carved out of rocks of pre-Pennsylvanian age but in part 

 also out of coarse boulder conglomerates of early or middle 

 Pennsylvanian age, all of which have been folded to a variable 

 degree and faulted. In the bottom of the U-shaped valley there is a 

 formation of much later horizontally bedded conglomerate, made up 

 of boulders of various sizes up to over a foot in diameter, which lies 

 directly across the faults that affect the rocks of the valley walls. 

 This undisturbed conglomerate, made up of boulders many of which 

 are porphyry derived from points at least a mile or more away, can 

 be traced out and grades into beds of finer sediments that surround 

 the mountains and are considered to be at the top of the Pennsyl- 

 vanian or in the basal portion of the Permian. 



The smooth and striated floor of the valley Hes beneath the hori- 

 zontal conglomerate, and is exposed only where the present stream 

 bed of Honey Creek happens to coincide with the old valley floor. 

 The present stream develops a rough and jagged rock bed with- 



FiG. 3. — Grooved porphyry cobble in 

 conglomerate overlying striated floor of 

 Fig. 2. 



