BULL. GEOL. SOC. AM. 



VOL. 18, 1906, PL. 34 



X- ^ 





^ ..^■~- 'v 



Figure 1. — North of the old Lake-bed 

 An seolian mesa, showing the unconformity of Figure 13 



Figure 2. — South op the old Lake-bed 

 Side of a gully near Chindelilj, showing the unconformity of Figures 5, 6, and 12 



UNCONFORMITIES AT LOP-NOR 



