Excursion to St. Albans. Saturday, September 13th, 1913 - Geologists' Association excursion

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Geologists' Association Circular No. 159. Session 1913-1914. p.2[edit]

Excursion to St. Albans. Saturday, Sept. 13th, 1913 (Transcription from: Circular No. 159. Session 1913-1914. p.2)[edit]

DIRECTOR: R. W. POCOCK, B.Sc., F.G.S.

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

Meet at King's Cross Suburban Station at 1.0 p.m.

Take day excursion tickets at booking office to St. Albans ; price 2s. 1d. each.

Train leaves at 1.15 p.m., arrives Hill End 2.4 p.m.

Walk to Tyttenhanger Pit where a fine section of Chalky Boulder clay with associated sands and gravels will be examined.

The sequence is, in descending order

Feet
Soil and Chalky Boulder day 12
Fine Current-bedded sand 8
Stiff Stony-clay 3
Coarse gravel and sand 5
Chalk

There are two interesting lenticular patches of peaty material resting in hollows in the Boulder clay and covered to a depth of 3–4 feet by loamy clay.

Proceed to Hill End Pit where a somewhat similar section is to be seen. The sands and gravels are here however considerably contorted.

The floor of the pit is in chalk and there is a channel in the latter which is filled in with loam and gia.vel. Other points of interest are the brecciation and re-cement- ation of the chalk surface, the cementation of the sands in concretionary masses and also of the gravels.

The Boulder clay contains Liassic and Jurassic fossils as well as blocks of Carboniferous Limestone, Millstone Grit, Rhaxella. Chert, etc.

Walk into St. Albans.

Tea at Dear's Temperance Hotel.

Return train from G.N.R. station 8.20, due King's Cross 9.15, there are other trains at 5 53 and 7.5.

Total walking distance about 4 miles.

The sections are worth photographing.

REFERENCES.

1-inch Geological Survey Map, Old Series, Sheet 7, drift.

Ordnance Map, 1-inch, Small Series, 239.

Images[edit]

Excursion to St. Album[edit]

List of photographs[edit]

Excursion to St. Albans, September 13th 1913[edit]

Page 65 P804621 Tyttenhanger Pit. Chalky boulder clay with associated sands and gravels. Excursion to St. Albans, September 13th 1913. Added note: Coarse gravel and sand; Stiff stony clay; Fine current bedded sand; Boulder clay. [Bottom to top.].
Page 65 P804622 Tyttenhanger Pit. Chalky boulder clay with associated sands and gravels. Excursion to St. Albans, September 13th 1913.
Page 65 P804623 Tyttenhanger Pit. Chalky boulder clay with associated sands and gravels. Excursion to St. Albans, September 13th 1913. Added note: Fine current bedded sand; Boulder clay. [Bottom to top.].
Page 65 P804624 Tyttenhanger Pit. Chalky boulder clay with associated sands and gravels. Excursion to St. Albans, September 13th 1913. Added note: Chalky boulder clay 12 ft.; Soil. [Bottom to top.].
Page 67 P804625 Hill End Pit. Glacial beds. Excursion to St. Albans, September 13th 1913.
Page 67 P804626 Hill End Pit. Glacial beds. Excursion to St. Albans, September 13th 1913.
Page 67 P804627 Hill End Pit. Glacial beds. Excursion to St. Albans, September 13th 1913.
Page 67 P804628 Hill End Pit. Glacial beds. Contorted gravel and sands. Excursion to St. Albans, September 13th 1913.