Excursion to Chilworth and St. Martha's Hill. Saturday, May 20th, 1911 - Geologists' Association excursion

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Geologists' Association Circular No. 132. Session 1910–1911. p.4-5

Excursion to Chilworth and St. Martha's Hill,. Saturday, May 20th, 1911. (Transcription from GA Circular No. 132. Session 1910–1911. p.4-5.)

DIRECTOR DOUGLAS LEIGHTON.

EXCURSION SECRETARY: MISS E. PEARS; 3, Bessborough Mansions, Westminster, S.W.

Leave Cannon Street 1.0 p.m.; arrive at Chilworth 2.38. Special return tickets 3s. each. Meet Excursion Secretary under clock, Cannon Street Station, not later than 12.45.

Walk eastwards from Chilworth along the main road to Albury. A good view can be obtained, from several points, of St. Martha's Hill, in the southern face of which all the divisions of the Lower Greenland, present in this part of Surrey, at represented.

The succession is as follows: Upper Ferruginous or Folkestone Sand, Pebbly Sand, Bargate Stone, Chert Beds, Lower Ferruginous Sand, Atherfield Clay.

With the exception of the Atherfield Clay, exposures of all the above will be seen during the afternoon. It has been stated that the Cherts (so largely developed to the south) are not present here, and one of the objects of this excursion is to show that an attenuated rePresentmive of these beds can be seen at two places on the hill underlying the Bargate Stone.

Turn from the main road at Waterloo Pond, and visit a good section in the Lower Ferruginous Sands. Thence walk southwards through Albury to Blackheath Lane, when the road cutting shows Bargate Stone resting on Chert Beds. Return through Alhary to Dalton Hill, where a section similiar to the last can be seen. This is on the extreme east end of St, Martha's Hill.

Proceed to the top of the hill, from which, if the weather is fine, a splendid view can be obtained.

Descend the hill on the opposite side and visit a pit, just south of Tyting Farm, in the Upper Ferruginous or Folkestone Sand, Proceed southwards to Great Halfpenny Lane. Here, all the divisions, from the Pebbly Sands down to the Lower Ferrugins Sands, are exposed in various parts of the lane. Thence return to Chilworth.

Fragments of derived Jurassic Ammonites, fish teeth, and portions of vertebix can be found among the pebbles in the Bargate Stone and beds below.

Walking distance 5 miles.

Tea at the Percy Arms, Chilworth. (9d., or with eggs 1s.)

Return train, Chilworth, 7.56 p.m., arriving at Cannon Street, 9.35 p.m.

REFERENCES.

Geological Survey Map (1 inch), Sheet 8; (Drift).

Ordnance Survey Map (1 inch), Sheet 285.

Ordnance Survey Map (6 inch), Surrey xxxii, N.W.

1868. MEYER, C. J. A.—"The Lower Greenland of Godalming." Geol. Assoc. Separate paper, price 6d.

1875. TOPLEY, W.—"Geology of the Weald." Mem. Geol. Survey.

1803. LEIGHTON, T.—"Excursion to Abinger." Proc. Geol. Assoc. vol. xiii, p. 163. 1895.

1995. GREGORY, J. W..—"Excursion to Chilworth." Proc. Geol. Assoc., vol. xiv, p. 120.

1894. CHAPMAN.—"On the Bargate Beds of Surrey." Quart. Journ.. Geol. Soc., vol. 1.

1904. HERRIES, R. S.—"Excursion to Chilworth." Proc. Geol. Assoc., vol. xviii, p. 597,

1906. HERRIES, R. S.—"Excursion to Shere and Albury." Proc. Geol. Assoc., vol. xix, p. 453,

1910. HERRIES, R. S.—"Geology in the Field."—"The Weald." pp. 444, 445. 1910.

LEIGHTON, D.—"Excursion to Gornshall." Proc. Geol. Assoc., vol. xxi, p. 526.

1911. HILL, William—"Flint and Chert." Proc. Geol. Assoc., vol. xxii, p. 61.

Images

List of photographs

Chilworth and St. Martha's Hill Excursion, May 20th 1911

Page 41 P805415 Chilworth. Roadside section in Folkestone Sands. Chilworth and St. Martha's Hill Excursion, May 20th 1911.
Page 41 P805416 Chilworth. Weathered surface of ferruginous Folkestone Sands. Chilworth and St. Martha's Hill Excursion, May 20th 1911.
Page 41 P805417 Chilworth. Weathered surface of ferruginous Folkestone Sands. Chilworth and St. Martha's Hill Excursion, May 20th 1911.