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ABSTRACT

Valid interpretation of sediment assemblages of planktonic foraminifera requires some knowledge of the filters through which the components have passed. Dissolution is the most important process modifying carbonate sediments and it would be useful to separate solution effects from the effects of the other major filter, lateral transport. Indices based on rankings or foraminiferal species according to the ease of solution and settling velocity of their tests give no clear separaration of transport and dissolution. Factor analysis and regression analysis show that whole foraminifera provide information about preservation and that different sizes of fragments, and therefore grain-size analysis, is a more useful indicator of sediment transport.

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