Bibliography - Christopher Theodore Augustine Gaston F.G.S. (1878 - 1963)
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The Chalk of the Worthing District Sussex, by Christopher T. A. Gaster, F.G.S., published 1924 in The Proceedings of the Geologists' Association London (no. 35 issue 2, article, pp.89-110)   View Online

For some years past I have been working on the Chalk of Sussex, chiefly in the neighbourhood of Worthing, and my results are outlined in this paper. The chalk pits collected from are situated on the south side of the Downs between the rivers Adur and Arun, a distance east and west of about 10 miles. The zones range from the Uintacrinus band of the Marsupites zone to the zone of Actinocamax quadratus as defined by Mr. Brydone (I9I2a, pp, 10, II). As the majority of the pits are in the A. quadratus zone, opportunities were afforded for paying particular attention to this Chalk, the recorded details of which will now be entered into as briefly as possible.
Since the publication of Rowe and Sherborn's valuable papers on the White Chalk of the English Coast (1900-1908) various adjustments have been made in the zonal divisions of the Upper Chalk.

Chalk Quarry near Black Rabbit Inn, Arundel, Sussex, by . T. A. Gaster, published December 1927 in Geological Magazine (vol. 64, issue 12, article, pp.557-558)   View Online

This quarry is situated three-quarters of a mile north-east of Arundel Castle on the west bank of the River Arun.

Chalk zones in the neighbourhood of Shoreham, Brighton and Newhaven, Sussex, by Christopher T. A. Gaster, F.G.S., published 1929 in The Proceedings of the Geologists' Association London (no. 40 issue 4, article, pp.328-340)   View Online

This paper is a further contribution of my work on the zones of the chalk in Sussex. My previous paper dealt with the chalk of the Worthing District [1924 (3) p. 89, et seq .]; the present one, which continues eastward of that district, embraces the area between Shoreham and Seaford. The southern portion is coastal, extending east and west for about 15 miles and is chiefly of an urban character. It includes the towns of Brighton, Hove, Shoreham and Newhaven. Owing to a westerly inward bend of the coast the inland extension is about 2½ miles at Shoreham, widening to 6 miles at Bishopstone, west of Seaford. The western boundary is drained by the River Adur and the eastern by the River Ouse. The part of the South Downs which forms the cliff at Brighton and eastwards to Newhaven recedes from the coast west of Brighton and continues inland. The Mount Caburn syncline is pr esent in the north of Brighton and eastwards, also the anticline of Kingston near Lewes, which runs approximately parallel with the last fold [1924 (2) pp. 6, 7]. Brydone has recorded a series of folds transverse to the cliff-line from Black Rock, Brighton, to Seaford [1914 p. 361]. These are continued westwards by an anticline which may be known as the Brighton anticline, of which East Brighton is the axis. It is the westerly pitch of this fold that accounts for the presence of the higher zones in West Brighton (which may be seen in the railway sections between Brighton Station and Holland Road Halt) and finally terminates the outcrop of chalk on the coast in East Hove. The inliers of Cold Dean, Lower Bevendean and Balsdean recorded by the Survey [1924 (2) p. 40] are present in the area.

The zones of the Chalk of the Arun Gap, Sussex: With description of new species of Bicavea, by Christopher T. A. Gaster, F.G.S., published 1932 in The Proceedings of the Geologists' Association London (no. 43 issue 3, article, pp.212-223)   View Online

The southward dip of the Chalk of the Arun Gap enables one to ascertain in sequence the zones present, which are exposed chiefly in old quarries and sections on either bank of the river. The Chalk is quarried at Amberley and in the pit by the Black Rabbit Inn, near Arundel. The old quarries at Houghton and the Burpham River Cliff add to the picturesque scenery of this beauty spot of West Sussex.
The Geologists' Association visited the area during their Whitsuntide field meeting in May, 1929, when some of the zonal details were pointed out. Since that date additional evidence has been obtained, and the results of the zoning of the Chalk in the gap are given, in th e schedule below.
Palaeontological evidence has resulted in a number of corrections being made in previous zonal records. Attention is drawn to the abundance of foraminifera in the zone of Actinocamax quadratus.

The Stratigraphy of the Chalk of Sussex: Part I. West Central area - Arun Gap to Valley of the Adur, with zonal map, by Christopher T. A. Gaster, F.G.S., published 1937 in The Proceedings of the Geologists' Association London (no. 48 issue 4, article, pp.356-373)   View Online

In this paper are recorded the results of a Survey of the Chalk of the portion of the Sussex Downs that extends from the Valley of the Adur to the Arun Gap, a distance of 13½ miles.This is intended to be the fIrst part of a comprehensive Survey of the Chalk of Sussex, between Eastbourne and the Hampshire boundary, a work on which the author has been engaged for many years. The area dealt with is included in the western portion of Sheet 318 (Brighton) and the eastern part of Sheet 317 (Chichester) of the Geological Survey. These sheets show in distinct colours the three major divisions of Lower, Middle and Upper Chalk, with lines indicating the position of the Melbourn Rock, and the Chalk Rock. In the present work more detailed results are indicated by the accompanying zonal map.

The Stratigraphy of the Chalk of Sussex. Part II. Eastern Area - Seaford to Cuckmere Valley and Eastbourne, with Zonal Map, by Christopher T. A. Gaster, F.G.S., published 1939 in The Proceedings of the Geologists' Association London (no. 50 issue 4, article, pp.510-526)   View Online

This paper, which forms the second part of a comprehensive survey of the Chalk of Sussex, records the results of a survey of the Chalk extending from Seaford to the Cuckmere Valley and Eastbourne, a distance of 7 miles. The width of the outcrop from the escarpment on the north to the chalk cliffs on the coast being approximately five miles. The area dealt with is included in parts of Sheets 334 (Eastbourne) and 319 (Lewes) of the Geological Survey. The three major divisions of Lower, Middle and Upper Chalk shown on those sheets are replaced in the present work by detailed zonal results which are shown on the accompanying map.

The Stratigraphy of the Chalk of Sussex: Part III. Western Area. Arun Gap to the Hampshire Boundary, with zonal map, by Christopher T. A. Gaster, F.G.S., published 1944 in The Proceedings of the Geologists' Association London (no. 55 issue 3, article, pp.173-188)   View Online

This paper comprises the third part of an extensive survey of the Chalk of Sussex. It records the result of a survey of the Chalk in the area extending from the Arun Gap to the Hampshire boundary, a distance of 16½ miles. The width of the outcrop from the main escarpment on the north to the Coastal Plain on the south ranges from 4 to 7 miles.
The area dealt with is included in parts of Sheets 316 (Fareham) and 317 (Chichester) of the Geological Survey. The three major divisions of Lower, Middle and Upper Chalk shown on those Sheets are replaced in the present work by detailed zonal results as recorded on the accompanying Map (Pl. 9). Reference to the Survey Memoirs indicate that research on the Chalk of this part of the county has been scanty. This is probably due to the many large estates and tracts of woodland covering the Downs, and to the limited means of access in the past to this purely rural area.

The Stratigraphy of the chalk of Sussex: Part IV. East central area - between the valley of the Adur and Seaford, with zonal map, by Christopher T. A. Gaster, F.G.S., published 1951 in The Proceedings of the Geologists' Association London (no. 62 issue 1, article, pp.31-64)   View Online

The paper records the results of a zonal survey of the Chalk in the area between the valley of the Adur and Seaford. It reveals some new and interesting facts relating to the geological structure of the area. For instance, the previously described anticline of Kingston near Lewes is found to comprise three folds, i.e. (a) Kingston Anticline, (b) Hollinghury Anticline, and (c) Beddingham Anticline. The Kingston Anticline is limited to the area between Mount Caburn and Newmarket Plantation. Faulting is associated with these folds. The Beddingham Anticline extends eastward beyond the district. Other folding, both synclinal and anticlinal, with faulting, are also described. The form of the outstanding valley, known as the Coombe, East of Lewes, is explained. The results are supported by considerable field evidence.