Abstract

The extensive ripple marked surfaces of the Merkle dolomite show two main kinds of oscillation ripples, simple ripples and interference ripples. The latter are of the rectangular type. A study of the trends of the ripples show that they fall into two main groups, one with northeast-southwest trends, and the other with northwest-southeast trends. The prevailing type of interference ripples lends strength to the hypothesis of two main oscillation directions at right angles to each other as indicated by the two groups of trends of the simple ripples. Otherwise the interference ripples would be of the hexagonal type. The interpretation offered is that the northwest-southeast trends are the result of southwest planetary winds, and the northeast-southwest trends are the result of monsoon winds blowing toward the land mass of Llanoria.

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