252 The Philippine Journal of Science 1922 
island, while definite evidence is not so marked on the Pacific 
side, although a recurring element *° in profile of certain portions 
of the east coast, for example at Palapag Mesa, may point to 
uplift. Terracing may have been general in extent. I am con- 
vinced that the section of Samar just described represents an 
old Pleistocene marine terrace; should this prove to be the case, 
Dickerson’s idea of extensive terracing would certainly carry 
considerable weight. 
Fic. 8. Drainage control in a portion of the east coast of Samar. 
It is on this northeast coast, also, that faulting is observed 
to some extent. A major fault line doubtless follows the seis- 
motectonic line along the western coast from San Juanico Strait 
to the northwest corner of the island. The presence of another 
major fault line or fault zone running roughly parallel to the 
east coast and probably bounding the Philippine Deep seems 
to be strongly postulated by phenomena that occurred during 
recent earthquakes, of which Fr. M. Saderra Masé, S. J., of the 
Philippine Weather Bureau, writes: 
* See Hobbs, W. H., Repeating patterns in the relief and in the struc- 
ture of the land, Bull. Geol. Soc. America 22 (1911) 127. 
