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II.—Differential Movement in East Anglia in Tertiary Times

Published online by Cambridge University Press:  01 May 2009

P. G. H. Boswell
P. G. H. Boswell
Affiliation:
Imperial College of Science and Technology, South Kensington.
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Extract

The sudden change of strike of the Chalk in South-East Suffolk, exceeded only in abruptness at ,the western limit of the London Basin, is accompanied by Tertiary phenomena equally interesting, and the occurrence of the Palæozoic platform at a small depth under the Chalk in the deep borings at Culford, Stutton, Harwich, and Weeley is, in this connexion, very significant.

Type
Original Articles
Information
Geological Magazine , Volume 2 , Issue 5 , May 1915 , pp. 198 - 206
Copyright
Copyright © Cambridge University Press 1915

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References

page 199 note 1 Quart. Journ. Geol. Soc., vol. lxviii, 1912, Proceedings, p. cviii.Google Scholar

page 199 note 2 Morley Davies, A. Dr. & Pringle, J., “On two deep Borings at Calvert Station (North Buckinghamshire) and on the Palæozoic Floor north of the Thames” : Q.J.G.S., vol. lxix, p. 308, 1913.CrossRefGoogle Scholar

page 199 note 3 In manuscript, a copy of which was kindly sent to the writer in July, 1914.

page 199 note 4 Since the above was written Rastall, R. H. Mr. has informed me that there is evidence in Cambridgeshire of the north-easterly movement of the Charnian axis through Sandy. See also Geology in the Field, pt. i, p. 140, 1909.Google Scholar

page 199 note 5 Professor W. G. Fearnsides, whom I have to thank for discussing several points with me, mentioned that Dr. J. E. Marr has drawn attention to the coincidence of the Wash Gap and the change in the strike of the Chalk, but Dr. Marr tells me he has not yet discussed the matter in print.

page 199 note 6 Q.J.G.S., vol. lxix, Proceedings, p. lxxv, 1913.Google Scholar

page 200 note 1 Messrs. H. J. Osborne White and L. Treacher have shown that near Newbury, i.e. on the opposite side of Professor Kendall’s Charnian axis, Marsupites Chalk again occurs under Eocene beds, and farther westwards the A. quadratus zone just appears.

page 202 note 1 It should be noted that this feather-edge constitutes the zero isopachyte.

page 204 note 1 Mr. F. W. Harmer in numerous papers.

page 204 note 2 See the writer, Proc. Geol. Assoc., vol. xxiv, p. 330, 1913.Google Scholar

page 204 note 3 Harmer, F. W., Geology in the Field, pt. i, pl. iii, 1909; Trans.Google ScholarNorfolk and Norwich Nat. Soc., vol. ix, plate at p. 132, 1910Google Scholar ; see also Proc. Geol. Assoc., vol. xxv, pl. xxiv, 1914.Google Scholar

page 204 note 4 Harmer, F. W., loc. cit., 1910, p. 119.Google Scholar

page 205 note 1 It was possibly this depression which buried the Neolithic skeleton and deposits found below tide-level near Walton-on-Naze by Mr. Hazzledine Warren.

page 205 note 2 Q.J.G.S., vol. lxix, p. 612, etc., 1913.Google Scholar

page 205 note 3 Rejuvenation up to the 50 ft. contour does not mean an uplift of 50 feet. A much smaller elevation would yield the result.