The proposed interpretation of Pleistocene stratigraphy, which results from recent 6-inch geological surveys in the Chelmsford and Norwich areas is at variance with generally accepted correlations relating to the drift deposits of East Anglia. The evidence for the existence of the Gipping Till and its associated glaciation is critically examined. It is concluded that widespread chalky boulder clay was formed during only one glacial episode. It is also suggested that the Hoxnian and Ipswichian deposits in East Anglia are closer in time than has been thought hitherto, and that the main glaciation of East Anglia is the penultimate (Wolstonian).

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SUMMARYInclusion textures within garnets are often used to demonstrate the relationship in time between garnet growth and deformation. The evidence for syntectonic growth is discussed, and it is shown that several thin sections are required before an accurate interpretation can be made. The patterns predicted by Powell & Treagus (1967) are matched with natural examples, and a mechanism for the aevelopment of these fabrics is suggested.

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