LOWER CHALK—LINCOLNSHIRE. 
221 
There are several good sections of these beds in the numerous 
quarries at and near Louth. Thus there are two large quarries 
on the north part of the town west of the Union House, and they 
give the following combined section : — 
Boulder clay and chalk rubble ------- 
Middle chalk ---------- 
(Belemnite Marl — soft grey and buff marl enclosing a 
band of marly chalk, and nodules of hard chalk at the 
base ---------- 
Hard white chalk resting on a thin seam of red marl - 
Hard pinkish chalk in thick even beds, with pink and 
yellow marly chalk at base ----- 
Greyish-white chalk, weathering into flattish lenticular 
lumps with marly layers ------ 
Hard greyish chalk forming one massive bed - 
Hard greyish nodular chalk ------ 
Pink and grey chalk, passing down into light-red chalk 
with seams of red marl ------ 
Hard greyish nodular chalk ----- 
^Compact grey gritty chalk - - - 
Totternhoe JHard nodular grey chalk, becoming 
Stone. j platy below, with a thin layer of grey 
l shale at the base ----- 
Hard greyish-white chalk in thick beds, with shaly partings - 
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The upper part of the zone is exposed in a quarry on the London 
Hoad,south of the town,and the lower beds, including the Totternhoe 
Stone, in a pit by the Waterworks, one mile W.S.W. of the town. 
There is also a very good section in a quarry at Hallington, two 
miles W.S.W. of Louth, where some extent of the Totternhoe Stone 
or “ grey bed ” is exposed. It is here 4 feet thick, and consists of : 
ft. 
Hard grey chalk, open jointed, and breaking into blocks - If 
Grey nodular chalk with yellow stains and a layer of shale 
at the base ---------- 2\ 
Above these are 13 feet of chalk, including the lower pink 
band, and below the Totternhoe Stone are 12 feet of greyish-white 
chalk. 
The same succession can be seen in an old pit behind the lodge 
at the entrance to Welton Vale, 1J miles west of Louth ; and again 
at Withcall Station, on the Louth and Lincoln line. From the 
station these beds can be followed for some distance westward along 
the line, for though the dip is westward, the beds are broken by a 
succession of small faults with up-throws on the western side, so 
that the beds are repeated again and again. Another good exposure 
very like that at Hallington is shown in a quarry by Pan Holes 
Lane, E.N.E. of Donnington Station ; the Totternhoe Stone is here 
34 feet thick, and the lower band of pink chalk is also exposed. 
