THE GEOLOGY OF PLYMOUTH. 
463 
Sedgwick & Murchison. Phillips. Remarks. 
tions are complicated by 
amazing contortions; just 
as happens when in North « 
Devon the Foreland sand- 
stones touch the Linton 
gray beds. The red beds 
form a hill over Staddon 
Point, and dip to the 
south-east (45° and 70°), 
so as to sink below the 
sea rapidly near the 
centre of Bovisand Bay, 
where they are covered 
by steeply acclined beds 
of bluish, grayish, and 
whitish shales. Much 
contortion prevails here. 
South of Bovisand Bay, 
earthy slate, passing into 
shale, with small nodules 
of ironstone, surmounted 
by various coloured earthy 
slates, alternating with 
reddish arenaceous bands, 
as seen on the cliffs of 
Crownall Bay, near the 
southern end of which is 
a patch of new red con- 
glomerate, resting uncon- 
formably on the edges of 
the older strata. 
Beyond Crownall Bay, 
reddish slate and flagstone 
and coarse red sandstone, 
occasionally contorted and 
penetrated by large quartz 
veins, passes into reddish, 
grayish, and greenish- 
gray chloritic slates, with 
hard quartzose bands and 
quartz veins. 
Blue and gray shales, 
and with thin calcareous 
bands of Bovisand Bay. 
They are somewhat fos- 
siliferous, containing Tur- 
binolopsis, Crinoidea, Spi- 
rifera, and an Alga. Dip, 
S. 40°. 
Going South, micaceous 
gritty schist, white and 
reddish, dip S. 50°. 
Ripple-marked lamina- 
tions. 
V/hite and reddish sand- 
stones. 
Blue shale, with grit 
seams much contorted. 
At middle of Bovisand 
Bay, horizontal strata 
and beds with northern 
dip occur. 
South of Bay, dark 
slates, dipping north at 
first, but immediately 
contorted to the south. 
This brings the section so far as Yealm mouth. Beyond Yealm 
mouth to Stoke Point there are grayish and greenish slates, with 
quartz veins and occasional gritty beds. 
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