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Transcription
8
ars older than the dike and not separated on the dike by any
by their lens labeled at the contact, Dike 1050 and
with 1079 and 1078 appears as a separate from a more like
1050 x 1079 appears to be the same offshoot.
In the southern series of 6.5.5 lamellibranchs
are abundant in the thin gray shales which appears at the
same as the thin gray shales lower beds of 6.5.6a, These
lamellibranchs are 6.5.5 a., The shells here dip 24° N.
12° W., Strike E. 10°N x W 100 S. (= N 90 E)
Saturday, June 22, 1907
At the foot of the cliff on the east side of Blackford Head near its
base after later B in Broad Cove there occurs a very interesting little
exposure. A sea cave is worn into the tropes at the east of a jorum
which runs approximately N.E. x S.W. On the N. side of this jorum
deposits a little exposure of a sort of shale, (dark gray 651a)
coarse sandy shales with a very characteristic
frequent & wood copals fragment not
collected), There is no trace of these beds
on the south side, and the feature is just--
ally a fault. The shale dips at my
high angle approximately 70°NE of Nock
amount of dip minimum shales penetrated.
The rock on the north side is 1053 that
on the south is 1052. Both appear to be the
same, a fine grained gray volcanic tuff which
exterior lithologically, tells stratified beds of Kennell Head. In
places the rock appears to include angular fragments of light-gray
lava no. 1053. There are poorly fragment of lakes shales, No. 1052 as a
single thin line kind of trap which is covered by thick mass
beds of thin gray shales, perhaps fifty feet thick. These
shales are quite friable strikes N 45°W. and dip ESE south--
west at an angle of 38°. They contain scars of lamelli-
branchs and a few gastropods with some Lingulas and
and in the same series with 6.5.5a and the general area
of thin gray shales about Blackford Head & Broad Cove The
brachi are 6.25.12a., The rock is free from quartzite or cal-
careous sand concretions of thin beds of gray shale
throughout. The lower part is not much folded & fragments
are included in 1052 indicating that the latter is an intrusion.
The upper 20 feet of 6.25.1a are extremely crumpled, con-
torted & sheared into a massive wrinkled sheet. The
rocks are quite dark in places and the glossy coal black appear-
ances of the sheet has given ground a clean appearance of coal.
This is one of the contact areas that has been regarded as a
sort of field of flow; the so-called coal is merely the broken--
side structural shale in the upper part of 6.25.1a which, broken
contact by the overlying volcanics. This volcanics represent flow
of light gray lava including large fragments, a foot commonly, feet,
or measurably 2.5 x 4 feet thick of another light gray Lava, 1054
one of these fragments. 1057 represents the native there resting
9
Shackford Head S.E. side.
beginning 3.25° W.
nickelinae of the underlying shales. A very sharply marked fault
seams opposite the 4-st. standing in northern 6.25.1 (about 75 feet
South of 6.25.1a which is at the north edge of the square). Into the
fault is any slight, apparently on the same material as rock occurs on
both sides, In the south side of this fault which appears to
pear 325° W. the comboidal feature in the gray lava flows of finely
developed. A hand specimen of this lava is 1057. On closer it
is quite grimeous, a piece of grime is 1057 on another
surface. The lava is in spots beautifully mottled with cream--
mixed areas. A mottled specimen in 1058 1057 is a dike
which runs into through the lava post-1057 and bears 3.50°W.
This dike also ends through the shales and across a very fault--
that bear 6. W. about 10 feet north and represents the area of the
fault generally at regularly for some of the south shore cliff of this
island and head the shale which are locally brought up, strikes in nearly
the same direction as the fault, and displays a heavy drag of.