The Flamborough Quaternary Research Group
Sewerby fieldwork 8th October 2006,
by Ian Heppenstall, Mike Horne, Paul Hardy and Stuart Jones.
Apologies from - Brian Kneller,
Chris Leech, Derek Gobbett, Kelly Wang and Paul Richards.
Note - there had been some high tides recently.
GPS readings for line of in situ
Chalk on beach, seaward side -
TA 19980 68448
19948 68431
..933 .. 427
914 425
908 420
815 416
bearing was 75 deg.
Pill box at 19809 68403
Exposure in cliff measured from TA 19740
68349 to 19884 68492
Measurements along a line from the buried cliff to last exposure seen (reverse
of above GPS readings).
NOTE - line was not necessarily horizontal, measurements taken to base of cliff
when beach was high. Exposure was very poor - there was much slumped boulder
obscuring the exposures.
Direction of present cliff is 45 degrees, direction of buried chalk cliff is 90
degrees from North.
First measurement is distance along line - followed by vertical section listed
top down.
-7m
edge of ancient chalk cliff
-6.5m
>1m chalk wash [ fine chalk angular gravel - solifluction deposit]
130cm chalk scree
40cm rounded chalk pebbles
90cm solid chalk
-5.0m
chalk wash
75cm Chalk scree
60cm chalk pebbles
70cm solid chalk
-4.6m
edge of the above bench of solid chalk
-3,2m -
chalk wash
1.0m sand
0.8m chalk gravel
0.6m chalk scree
riased beach of chalk pebbles
- 1.8m
sand
70cm chalk wash
45cm chalk scree
110cm rounded chalk pebbles
0m - top of chalk cliff behind Quaternary is 8.5m
?
chalk wash
40cm scree
80cm rounded chalk pebbles
20cm solid chalk
+10m
1.6m chalk wash
5.5m sand
+20m
ca 5.5m sand
+65m
patch of chalky - silty - sand ca 5m above beach level [sample]
+90m
30cm chalk wash
>1m silty sand; base not found
2.5m to beach
+112m
2m chalk wash
[note 10cm layer of brown silt layer 46cm from top]
2m to beach
+122m
2.9m chalk wash
+140m
2.2m chalk wash
+150m
2.4m chalk wash
+166m
2.4m chalk wash
+175m
1.8m chalk wash
+190m
1.3m chalk wash
+195m
1.1m chalk wash
Copyright Hull Geological Society.
Registered Educational Charity No. 229147