On the Two Plains of Hertfordshire and their Gravels
1868; Geological Society of London; Volume: 24; Issue: 1-2 Linguagem: Inglês
10.1144/gsl.jgs.1868.024.01-02.34
ISSN2058-105X
Autores Tópico(s)Archaeological Research and Protection
Resumo1. Introduction .—The observations on which the following paper is founded were mostly made in the spring months of 1865 and 1866, while engaged in carrying on the Geological Survey of part of the neighbourhood of Hertford, and are now published with the permission of the Director-General of the Survey. 2. Physical Geography .—As we stand on the high ground near Hertford Heath, Brickenden, Bayford, Essenden, or the upper part of Hatfield Park, we can hardly fail to observe that all those flattopped hills, together with the high wooded country north-west of Bramfield and north of St. Albans, form part of a great plain extending as far as the eye can reach in all directions, the boundary of which is somewhere far beyond the district under consideration. Out of this highest plain, a great valley has been excavated, the bottom of which itseff forms another plain of very considerable extent, upon which Bayfordbury, Hertingfordbury, Bengeo, Bramfield, Cole Green, Welwyn Junction, and the lower part of Hatfield Park stand. The boundary of this lower or valley-plain is well defined. In the district under examination, it is bounded on the N. by the hills which rise suddenly behind Bramfield, on the W. by the hills which run from Welwyn to St. Albans, and on the S. by the hills which extend from Hertford Heath to Hatfield Park. It spreads out to the S. between St. Albans and Hatileld, and runs to the E. and S.E. by Ware and Parndon, while it probably extends round
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