 | 1864 - 746 Seiten
...formation of, the succeeding stages. At Walton-on-Naze alone do any of the four lower stages contain any evidence of being a sub-aqueous deposit ; there the...is at its base that the coprolite workings occur. This stage also passes up at Chillesford into the sands and gravels, termed by the author the Lower... | |
 | 1864 - 1214 Seiten
...either concealed by, or destroyed during the formation of, the succeeding stages. At Walton-on-the-Naze alone do any of the four lower stages contain evidence...is at its base that the coprolite workings occur. This stage also passes up at Chillesford into the sands and gravels termed by the author the Lower... | |
 | 1864 - 1632 Seiten
...either concealed by, or destroyed during the formation of, the succeeding stages. At Walton-on-the-Naze alone do any of the four lower stages contain evidence...is at its base that the coprolite workings occur. This stage also passes up at Chillesford into the sands and gravels termed by the author the Lower... | |
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... extending from the river Aide on the north, to the southern extremity of the deposit in Essex. Of these four stages, the 4th is the most constant and important, the 1st, 2nd, and 3rd being frequently either concealed by, or destroyed during the formation... 