No CrossRef data available.
Article contents
IV.—The Succession of the Crags
Published online by Cambridge University Press: 01 May 2009
Extract
All geologists, especially those who, like myself, are interested in the study of the Upper Tertiaries, are indebted to Mr. Prestwich for the valuable memoir upon “The Structure of the Cragbeds of Suffolk and Norfolk.” As the views propounded therein are somewhat novel, I purpose examining some of the points brought forward in their support.
- Type
- Original Articles
- Information
- Copyright
- Copyright © Cambridge University Press 1872
References
page 209 note 2 Page 35.
page 209 note 2 Quarterly Journal Geol. Soc. London, 1870 and 1871.
page 210 note 1 See the interesting series, collected by Mr. H. Woodward at the Tejares, Malaga, in 1860, preserved in the British Museum.
page 211 note 1 That is the Coralline Crag sea.
page 211 note 2 Six or eight Pleurotomas, including, P. turricula, Broc., P. intorta, a large Mitra, one or two Volutes, a Cassis, Ranella anglica, Murex exculpta. Nassa conglobata (?), Tellina Benedenii, etc., perhaps twenty in all. Also Solenustrea Prestwichii, and a tolerably common Flabellum (? n.so).
page 211 note 3 The division into zones of the Coralline Crag is of much value, but from my own investigation, I think some of the zones, considered as separate, really are concurrent with each other. Thus at the Gomer Pit, I found the zone f included the fossils of zone d, the larger shells immediately underlying the zone containing the smaller.
page 212 note 1 The English Crags. By A. and R. Bell. Geol. Mag. 1871, Vol. VIII., p. 256.
page 213 note 1 A similar condition obtains in the Post-Pliocene clays of Belfast. Mr. Stewart informs me that the base is characterized by Pholas crispata overlaid by a zone of Thracia convexa.
page 213 note 2 Is not “Bulimus” noted as occurring at Bulchamp an error?