Geology of the St. Croix DaUes. — Berkeij. 
371 
OSCEOLA. 
cS ca 
V. 
■Si^'-« 
c 
^.-a?. 
rn 
-! C H 
a 
fix £ 
a 
W 
o 
0*-im 
(x^ 
<X'^ 
Q 
TAYLOR'S FALLS. 
in size upward to three 
inches in diameter. TlieA^ 
show no fossil content, 
although the matrix car- 
ries abundant fragments 
of trilobites. An outcrop 
of igneous rock lies in 
the immediate vicinity, 
but the intervening dis- 
tance between it and the 
conglomerate is covered 
b}' soil and drift. Sand- 
stones and shales are ex- 
^ posed at numerous places 
o , 
along this same road at 
S ^ lower levels, and presum- 
I I (C ably at lower rock hori- 
'2 T^^ zons, but a continuous 
» 5 ^ section is not obtaina- 
. si = 0) ble. The friable nature 
s £ r-S or sandstones makes 
p o£co *" them especially liable to 
1 .:=.! o mechanical destruction 
c and for this reason a 

•p sandstone conglomerate 
^S S ^ is a rarity among rocks. 
ii^^"! '. Thiscircumstancemakes 
g c a J M . 
S55 s .the occurrence an inter- 
■2 a a "^ iZ esting one, and the evi- 
o^^TJc dence wiiich it gives in 
■i%9'%^ support of the view that 
interval occurred at this 
point makes it of addi- 
tional importance. To 
what formation the sand- 
stone conglomerate be- 
longs, and what this 
break in sedimentation 
may mean are questions 
which deserve attention. 
