The less than 2mu fractions of bottom sediments from the Beaufort Sea and Arctic Ocean, were analysed for clay mineral composition. In all of these high latitude sediments, illite is predominant, Chlorite and kaolinite occur in significant amounts and smectite is least abundant. This occurrence of kaolinite is noteworthy. Since the generally accepted view related to marine sediments is that kaolinite is a "low latitude" clay mineral it is suggested that the use of clay minerals in the inference of poleoclimates should be made with great caution.

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