814 



GEOLOGY 



locally, by pronounced orogenic movements. 1 But toward the 

 close of the period movements were more general. Pronounced 



Fig. 548. Petrified tree-trunks, Yellowstone National Park. (LMinjrs, 



U. S. Geol. Surv.) 



deformative movements affected the coastal regions of On-untr 



1 Ashley, Jour. Geol., Vol. Ill, p. 434; Whitney, Geol. of Calif. .ruin. I. 



2 Diller, 17th Ann. Kept., U. S. Geol. Surv. 



