658 C. CALLAWAY ON THE PRECAMBRIAN 
short distance to the 8.W. A green felspathic rock is seen at one 
spot on the 8.E. slope. 
12. Hazler Mill. 
A greenish breccia occurs at the north-east end, near the road to 
Church Stretton. <A similar rock is seen at the south-western extre- 
mity, where it is associated with a dark compact felstone. Here sets 
in a mass of greenstone, which forms the crest of the low ridge 
connecting Hazler with Ragleth. This rock is well seen in a quarry 
at the side of the road. In places it is spotted with amygdaloids of 
calcite, 
13. Hope Bowdler and Cardington range. 
Details—At the most westerly summit, called the Gaer Stones, 
the prevailing rock is grey, earthy, rather compact claystone. A 
similar material also occurs as the matrix of a grey breccia. On 
the slope to the E. of the crest is a rough grit of red felspar and 
quartz fragments, the former predominating. 
Following along’ the ridge to the E., we come next to Hope-Bowdler 
Hill. Here also the rock is for the most part fragmental. Several 
varieties of breccia occur, the fragments being of quartz and felspar, 
and the matrix presenting a very ashy appearance. This breccia 
thins out towards the EK. 
On the southern slopes of Cardington Hill, at a lower horizon 
than the clastic beds, is a fine development of green and purple fel- 
stone, the latter predominating. This rock is magnificently exposed 
in the crags overhanging the gorge which runs up from near Wood- 
gate into the heart of the ridge. Itis compact in texture, with scat- 
tered felspar crystals, and is banded and spotted with darker colours 
(Note 5, p. 667). It is limited below by a bed of grit to be shortly 
described; and, as there are no signs of disturbance either above or 
below, I infer that it is not intrusive. In the mouth of the ravine, 
the Survey has assigned to the purple felstone a dip towards theS. ; 
but I am by no means certain that the alleged bedding is not due to 
jointing. Towards the K. this felstone band approaches nearer and 
nearer to the overlying quartzite of the Sharp Stones through the 
thinning out of the breccia. 
To the §.W. of this gorge, on the ae of Woodgate, is one of 
the clearest sections of the entire Precambrian series. The succes- 
sion, taken in ascending order, is as follows :— 
(1) Grey felspathic grit, much kaolinized ; 7 to 8 feet. 
(2) Purplish felstone, compact, with small felspar crystals disseminated, 
weathering white at surface ; 15 feet. 
a Speckled grit (Note 6, p. 668), composed of grains of white felspar kaolinized, 
of small crystals of r ed felspar, and of green chlorite (?) in scales (which some- 
times display a striated “slickenside” surface), and disseminated through 
the mass; very small rounded pebbles occasionally occur; the white and 
green minerals form alternating lamine; barium sulphate is seen in small 
nests and veins: 20 feet. 
(4) Purple felstone, passing up into the mass previously described. 
