BEDDING IN LIGHT OF SEDIMENTARY DIFFERENTIATION

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Abstract
Correlation of sediments has been hindered by a dichotomy in geologic thought, that is, synchronous and asynchronous bed formation are considered by respective proponents to be mutually exclusive.However, in the final analysis, it can be seen that both forms of bed formation exist in nature.Two laws governing sedimentary differentiation are 1) at any time, when in a series of deposits a mutual separation of beds occur and these beds are not very normally juxtaposed in the spatial and temporal sequence of the products of sedimentary differentiation characteristic of the accumulations in a particular area, interruption, either changes in the sedimentary regime or changes of a catastrophic nature, must occur; 2) for migrating facies, only those sediments which succeed each other laterally can succeed each other vertically. --G. E. Denegar.

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