482 



SAMUEL WEIDMAN 



by Taylor' as a grooved boulder, it is the writer's interpretation that 

 it is the top of a granite stack whose base is buried beneath the valley 

 deposit. This interpretation finds visible support at least in the 

 observations that no distinctly loose boulders of this t3^e were 

 seen in the area, and such grooved surfaces as these are known to 

 entirely encircle some of the granite hills. 



, The grooved granite stands at the lower end of a valley on the 

 south side of King Mountain, about two miles south of Lugert. 

 The valley opens out to the south into the North Branch of the Red 

 River. Figure 1 2 is a view of the granite stack with the east side 



Fig. 12. — View showing grooves en- FiG. 13. — View showing grooves encir- 



circling granite stack. Seen from east cling granite stack, same as Fig. 12. Seen 

 side. from west side. 



of the mountain nearby in the background. On the left, at the same 

 level as the grooved granite stack, the valley side shows some 

 grooved surfaces, and on the slope higher up is a notch cut into the 

 side of the mountain indicating what may be some faint traces of 

 an ancient terrace. The opposite or west side of the grooved granite 

 with the central part of the valley in the background is shown in 

 Figure 13. 



The grooved granite stack is elongated in a direction parallel 

 with the valley, and its north end facing up the valley (to the right 

 in Figure 12 and to the left in Figure 13) has a distinctly steeper and 

 more abrupt face than its south end which faces down the valley. 

 The end facing up the valley has the appearance of being undercut 

 by the force of erosion that developed the encircling grooves, and 



' C. H. Taylor, Okla. Geol. Survey, Bull. 20, Plate XI, p. 61. 



