CRETACEOUS BEDS OF KOGUE RIVER VAELEY. 405 
except plants have been found east of Bear Creek. The sedi- 
mentation was apparently continuous, and the beds are unbroken 
along the whole length of the section. es 
Subsidence —As far as is known all the beds of this region are 
of younger age than those at Riddles, Douglas county, farther to 
the northwest, which have been described by Mr. Diller and 
Mr. Stanton, and which seem to be of Upper Knoxville age. 
‘This, as they have shown, indicates a general subsidence of the 
land toward the southeast. 
Elevation —Glancing again at the accompanying sections, it 
seems remarkable that the steep and uniform dip of the strata 
can be accounted for by a subsidence of the land along the 
eastern shore-line. On the flanks of the Siskiyous, notably near 
the railway tunnel at the summit, at an elevation of 4000 feet, 
fossils are found which indicate a lower horizon than that of the 
barren sandstones upon the basaltic area a few miles to the 
northeast, at a much lower elevation. The Miocene strata 
known in this region also dip at a high angle away from the 
granite of the Siskiyous, which would not be expected without 
some movement subsequent to their deposition. This elevation, 
then, probably took place about the time of the general out- 
pouring of the lava which covers eastern Oregon from the Col- 
umbia River south, and northern California. This lava, as has 
been shown by Professor Le Conte and others, is later than the 
Miocene.” 
NOTES ON THE FOSSILS. 
- Hlorizon.—Although the fossils collected near Phoenix were all 
obtained from an area of less than one hundred feet square, it is 
not clear that they are all from the same horizon. A glance at 
the section, Fig. 1, will show that an immense thickness of strata 
has been removed at the locality at which the fossils were found. 
The fossils may not all have been in their original places, as they 
were found mainly in blocks of hard rock resting irregularly upon 
tBull. Geol. Soc. Am., V., 452. 
ZAmaJourm och, Ville 1874, 170. ,.Geol. Sur. Cal, ey aisa- U.S. Geol. Sur. Bull: 
No. 33, 20. 
