Difference between revisions of "Excursion to Soulbury, Stewkley and Wing. Saturday, July 18th, 1914 - Geologists' Association excursion"

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Geologists' Association Circular No. 168. Session 1913-1914. p.8-9[edit]

Excursion to Soulbury, Stewkley, and Wing. Saturday, July 18th, 1914. (Transcription from: GA Circular No. 168. Session 1913-1914. p.8-9)[edit]

DIRECTOR: A. MORLEY DAVIES, DSc., F.G.S.

EXCURSION SECRETARY: DOUGLAS LEIGHTON, 108, St. Julian's Farm Road, West Norwood, S.E.

Meet the Excursion Secretary at Euston main line booking office not later than 8.55 a.m, to obtain cheap return tickets, 4s. 6d. Bring lunch. Leave Euston 9.10 a.m., arriving Leighton Buzzard 10.45 a.m.

Drive out to Soutbury (where a large block of Carboniferous Limestone will be seen in the village) and on to a pit in Glacial Gravels, containing pebbles and boulders of chalk, flint, Jurassic limestones, Liassic and Oxfordian Gryphææ and Belemnites, Carboniferous sandstone, and pink and white quartz. Various interesting features are shown by these gravels.

Drive on to Stewkley village (very fine late Norman church), where a halt will be made for lunch, Then on to two bricklields south-west of the village, which, though quite near one another, show two distinct zones of the Kimmeridge Clay. In the first (Hedges') this clay is thrown into folds, probably of glacial origin, and partly overlain by Boulder Clay. Saurian bones may he found here, but other fossils are fragile. In the second pit there are very large septaria with nailhead crystals and good cone-in-cone structure,

Continue to Warren Farm sandpit the most northerly occurrence in England of typical Portland beds sand below, limestone with large Perisphincies above this, and Purbeck beds on top. The nature of the junction of the Purbeck and Portland stone deserves careful study.

Drive back to Wing (church with Saxon apse and crypt) and Littleworth brickfield. Here this sequence is seen:

ft.
Coarse morainic gravels 8
Chalky boulder clay
Sands and finer gravels, about 10
Gault, about 17
Kimmeridge Clay (only occasionally reached).

Drive back to Leighton Buzzard). On the way the first coming-in of Aptian sands below the Gault, may be seen in a small pit.

Tea at Swan Hotel. Price, with eggs, 1s. 6d.

Cost of drive, 2s.

Return trains Leighton 7.2 p.m. Euston 8.25 p.m.

REFERENCES.

Ordnance Survey Map. Sheet 220 (Leighton Buzzard).

Geological Survey map. O.S., Sheet 46, S.W.

1836. FITTON, W. H.—"Strata between Chalk and Oxford Oolite." Trans. Geol. Soc., ser. 2, vol. iv, pp. 291–293,

1895. WOODWARD, H. B.—"Jurassic Rocks of Britain." v, p 169, 223, Mem. Geol. Survey

1900. JUKES-BROWNE, A. J.—"Cretaceous Rocks of Britain." Vol. i, . p. 278, Mem. Geol. Survey.

1901. DAVIES, A. M.—"Excursion to Leighton Buzzard, Wing, and Stewkley." Proc. Geol. Assoc., vol. xvii, pp. 139–141.

Images[edit]

Excursion to Soulbury, Stewkley and Wing, July 18th 1914[edit]

List of photographs[edit]

Excursion to Soulbury, Stewkley and Wing, July 18th 1914[edit]

Page 65 P804754 Robinson's Pit, Soulbury. Soulbury ? Pit in Glacial Gravels. This is on the Watershed between the Thames and the Ouse. Excursion to Soulbury, Stewkley and Wing, July 18th 1914.
Page 65 P804755 Robinson's Pit, Soulbury. Excursion to Soulbury, Stewkley and Wing, July 18th 1914. Section of Glacial Gravels containing pebbles and boulders of chalk, flint, Jurassic limestone, Liassic and Oxfordian Gryphkaeae [Gryphaea] and Belemnites, Carboniferous Sandstone and pink and white quartz.
Page 65 P804756 Soulbury. Eroded surface and pipes in Glacial Gravels caused by the decalcification of the gravel by percolating water. Excursion to Soulbury, Stewkley and Wing, July 18th 1914.
Page 65 P804757 Soulbury. Eroded surface and pipes in Glacial Gravels caused by the decalcification of the gravel by percolating water. Excursion to Soulbury, Stewkley and Wing, July 18th 1914.
Page 67 P804758 Stewkley. Hedges Pit in Kimmeridge Clay. Owing to glacial action the clay is thrown into folds and in places overlaid by boulder clay. Excursion to Soulbury, Stewkley and Wing, July 18th 1914.
Page 67 P804759 Stewkley. Hedges Pit in Kimmeridge Clay. Owing to glacial action the clay is thrown into folds and in places overlaid by boulder clay. Excursion to Soulbury, Stewkley and Wing, July 18th 1914.
Page 67 P804760 Hedges Pit. Kimmeridge Clay thrown into folds with axes running WNW to ESE. These are of glacial origin and are at right angles to the most probable direction of the ice flow at this point. Excursion to Soulbury, Stewkley and Wing, July 18th 1914.
Page 67 P804761 Hedges Pit. Kimmeridge Clay thrown into folds with axes running WNW to ESE. These are of glacial origin and are at right angles to the most probable direction of the ice flow at this point. Excursion to Soulbury, Stewkley and Wing, July 18th 1914.
Page 69 P804762 Bliss's Pit, Stewkley. Section of Kimmeridge Clay in brick-yard. This is a slightly higher zone than that of Hedges Pit. Excursion to Soulbury, Stewkley and Wing, July 18th 1914.
Page 69 P804763 Bliss's Pit, Stewkley. Section of Kimmeridge Clay in brick-yard. This is a slightly higher zone than that of Hedges Pit. Excursion to Soulbury, Stewkley and Wing, July 18th 1914.
Page 69 P804764 Kimmeridge Clay with Septaria. Orbiculoidea latissima was found here but to reptilian remains have been discovered. Excursion to Soulbury, Stewkley and Wing, July 18th 1914. Added note in pencil: I got some from the men some years ago. M.S.T.
Page 69 P804765 Cone-in-cone structure round Septaria, the cracks being lined with calcite in the form of nail-headed crystals. Excursion to Soulbury, Stewkley and Wing, July 18th 1914.
Page 71 P804766 Warren Farm sand pit. Excursion to Soulbury, Stewkley and Wing, July 18th 1914. This is the most northerly occurrence in England of typical Portland Beds. Here we have the sand below, then the limestone with large specimens of Perisphinctes and the Purbeck Beds on top. Added note: Portland Sand; Portland Limestone; Purbeck. [Bottom to top.].
Page 71 P804767 Warren Farm sand pit. Excursion to Soulbury, Stewkley and Wing, July 18th 1914. This is the most northerly occurrence in England of typical Portland Beds. Here we have the sand below, then the limestone with large specimens of Perisphinctes and the Purbeck Beds on top. Added note: Portland Sand; Portland Limestone; Purbeck. [Bottom to top.].
Page 71 P804768 Junction of Purbeck and Portland beds. Excursion to Soulbury, Stewkley and Wing, July 18th 1914. Added note: Portland Limestone; Purbeck Beds. [Bottom to top.].
Page 71 P804769 Junction of Portland Sand and Limestone. Excursion to Soulbury, Stewkley and Wing, July 18th 1914. Added note: Portland Sand; Portland Limestone. [Bottom to top.].
Page 73 P804770 Littleworth Brickfield, Wing. Glacial Gravels overlain by Boulder Clay. Excursion to Soulbury, Stewkley and Wing, July 18th 1914.
Page 73 P804771 The Lower Greensand which is 200 ft thick at Leighton Buzzard and the Portland and Purbeck beds seen in the previous pit are here absent. Excursion to Soulbury, Stewkley and Wing, July 18th 1914. Added note: Kimmeridge Clay; Gault; Sands and fine gravel; Chalky Boulder Clay; Coarse morainic gravels. [Bottom to top.].
Page 73 P804772 West doorway, Stewkley Church with characteristic zigzag ornament. Excursion to Soulbury, Stewkley and Wing, July 18th 1914.
Page 73 P804773 Late Norman tower, Stewkley Church. Excursion to Soulbury, Stewkley and Wing, July 18th 1914.