RED CRAG. 
89 
Fig. 13. 
Section in a Pit at Park Farm, Tatting stone. 
(Prestwich.) 
Scale 12 feet to an inch. 
1. Coarse gravel. Drift. 
f2. Ochreous sand with seams of ironstone, &c. 
I 3. Crag with a few coprolites. 
Red Crag j 4. Light-coloured Crag. 
12 feet. 1 5. White sand. 
I 6. Brown loam. 
[_7. Not described. 
8. Coraline Crag ; 8 feet. 
* Face of old cliff; depth not shown. 
Flat pieces of the thin Coralline Crag limestones are common in 
the Red Crag at Tattingstone. 
Red Crag outcrops almost continuously along the right bank of 
the Orwell, from its junction with the Stour to Ipswich, but the 
sections merely show ferruginous strata or shelly Crag of the usual 
type,* and only one of them, about two miles south of Ipswich, 
need be referred to. 
From the position assigned by Lyell to the following section of a 
pit, about 500 yards south of the vicarage-houseof Wherstead 5 ”t 
it would seem to be one not now open :— 
Sandy and gravelly beds, without fossils, 8 feet. 
Shelly red Crag: near the top a layer of unrounded flints, with some 
flint-pebbles. The upper parts of these stones encrusted with 
barnacles. One flint 22 X 16 X 7 inches. 10 to 12 feet. 
The occurrence of these large unworn flints high up in the Red 
Crag is noteworthy, for though Chalk now outcrops within a mile 
of the spot, it was protected by Eocene strata during the deposi¬ 
tion of the Crag. The flints were probably transported from a 
much more distant source and perhaps point to the agency of 
floating ice, for the large one mentioned by Lyell must have 
weighed about a hundredweight. 
The left bank of the Orwell shows numerous sections of shelly 
Crag, which a mile or two south-east of Ipswich crops out in the 
* See Geology of Ipswich. &c. (^Memoirs of the Geological Survey)^ pp. 48-50. 
t Sir C. Lyell, JRep. Brit. Assoc, for 1851, Sections, p, 85. 
