Difference between revisions of "Excursion to Arlesey and Letchworth. Saturday, July 9th, 1910 - Geologists' Association excursion"

From Earthwise
Jump to navigation Jump to search
[checked revision][checked revision]
Line 52: Line 52:
 
File:P805385.jpg|Glacial gravels near Station, Letchworth.
 
File:P805385.jpg|Glacial gravels near Station, Letchworth.
 
File:P805386.jpg|Glacial gravels near Station, Letchworth.
 
File:P805386.jpg|Glacial gravels near Station, Letchworth.
File:P805387.jpg|Brickworks of Messrs Beart and Co., Arlesey, in the upper part of the Gault, Cambridge Greensand, and base of the Chalk Marl. The members are on the junction examining the Cambridge Greensand.
+
File:P805387.jpg|Brickworks of Messrs Beart and Co., Arlesey, in the upper part of the Gault, Cambridge Greensand, and base of the Chalk Marl.  
File:P805388.jpg|Brickworks of Messrs Beart and Co., Arlesey, in the upper part of the Gault, Cambridge Greensand, and base of the Chalk Marl. The members are on the junction examining the Cambridge Greensand.
+
File:P805388.jpg|Brickworks of Messrs Beart and Co., Arlesey, in the upper part of the Gault, Cambridge Greensand, and base of the Chalk Marl.  
 
File:P805389.jpg|Excursion to Arlesey and Letchworth, July 9th 1910.
 
File:P805389.jpg|Excursion to Arlesey and Letchworth, July 9th 1910.
 
File:P805390.jpg|Arlesey Cement Company pit.
 
File:P805390.jpg|Arlesey Cement Company pit.

Revision as of 18:35, 26 September 2020

P805385.jpg

Geologists' Association Circular No. 122. p. 2-3.

Excursion to Arlesey and Letchworth. Saturday, July 9th, 1910. (Transcription from GA Circular No. 122. p. 2-3.)

THE PRESIDENT: WILLIAM HILL, F.G.S.

EXCURSION SECRETARY: MARK WILLS, 47, Upper Clapton Road, N.E.

Leave King's Cross by 1.45 p.m. train, due at Arlesey (Three Counties Station) at 04 p.m. To obtain cheap return tickets, 319 each, meet Mr. Wilks in local booking office not later than 1.30, or they can be obtained beforehand by writing to Mr. Wilts,

Walk to the brickworks of Messrs. Beart & Co.. where a deep excavation discloses a section in the upper part of the Gault, Cambridge Greensand and base of the Chalk Marl. The Cambridge Greensand is only visible for a short length on one side of the pit.

Proceed to the quarries of the Arlesey Cement Co. The one inspected by the members of the Association on their last visit is now abandoned, but a section is still visible in the upper part of the Chalk Marl, the Totternhoe Stone, and base of the Lower Chalk, though it is somewhat obscured by talus. Immediately to the south is a large pit in the upper part of the Chalk Marl. A few fossils may be secured here.

Walk to the Roman Camp, Wilbury Hill. There is a good view on the way covering the outcrop of the Cretaceous Series from the Lower Greenland to the main Chalk escarpment. A small exposure of the Melbourn Rock close by. The Director will draw attention to the features of the country and indicate the course of an old valley now filled with drift.

On the way to Letchworth (Garden City) a series of gravel pits will be visited. The gravel is believed by the Director to be the oldest in the district. If time permits there are two good exposures of the Middle Chalk, which could be examined (upper part of the zone of N. cuvieri and base of the Terebratulina Chalk).

Walking distance about 4 miles.

Tea will be arranged for at Letchworth.

Return train, Letchworth, 7.33, due at King's Cross 8,35 (the possibility of walking to Hitchin Station by the main road may be indicated, about to minutes more time than going to the Letchworth Station).

REFERENCES.

Geological Survey Map, s in., Sheet 46 N.E.

Geological Survey Index Map, New Series, Sheet 16 (drift); price 25. 6d.

1875. JUKES-BROWNE.—" On the Relations of the Cambridge Gault Greensand. Quart. Journ. Geol. Soc., vol. xxxi, p. 256.

1886. HILL, W„ and JUKES-BROWNE, A. J.—"The Melbourn Rock." Quart. Journ. Geol. Soc., vol. xlii, p. 126.

1887. HILL, W., and JUKES-BROWNE. A. J.—"On the Lower Part of the Upper Cretaceous Series in West Suffolk and Norfolk." Quart. Journ. Geol. Soc., vol xliii, p. 944.

1900. HILL, W.—" Excursion to Hitchin and Arlesey." Proc. Geol. Ass., vol. xvi, p. 446.

1908. HILL, ,W.—" On a Deep Channel of Drift at Hitchin." Quart. Journ. Geol. Soc., vol. lxiv, p. 8.

Images

Excursion to Arlesey and Letchworth, July 9th 1910

List of photographs

Excursion to Arlesey and Letchworth, July 9th 1910

Page 23 P805383 Gravels capping Chalk, Letchworth. Excursion to Arlesey and Letchworth, July 9th 1910.
Page 23 P805384 Arlesey, section of Chalk Marl. Excursion to Arlesey and Letchworth, July 9th 1910.
Page 23 P805385 Glacial gravels near Station, Letchworth. Excursion to Arlesey and Letchworth, July 9th 1910.
Page 23 P805386 Glacial gravels near Station, Letchworth. Excursion to Arlesey and Letchworth, July 9th 1910.
Page 25 P805387 Brickworks of Messrs Beart and Co., Arlesey, in the upper part of the Gault, Cambridge Greensand, and base of the Chalk Marl. The members are on the junction examining the Cambridge Greensand. Excursion to Arlesey and Letchworth, July 9th 1910.
Page 25 P805388 Brickworks of Messrs Beart and Co., Arlesey, in the upper part of the Gault, Cambridge Greensand, and base of the Chalk Marl. The members are on the junction examining the Cambridge Greensand. Excursion to Arlesey and Letchworth, July 9th 1910.
Page 25 P805389 Excursion to Arlesey and Letchworth, July 9th 1910.
Page 25 P805390 Arlesey Cement Company pit. Excursion to Arlesey and Letchworth, July 9th 1910. Added note: Base of the Lower Chalk; Totternhoe Stone; Upper part of the Chalk Marl. [Bottom to top.].