A survey of the Miers and Marshall Valley and Walcott Bay area for dating the formation of the major landforms

Surprisingly carbonate "biscuit" similar to that found in the Taylor Valley were found. Thus, we noted the elevations of carbonate and gypsum, also in relation to ancient lake levels and moraines.

Samples were subjected to geochemical analyses. Kenyte-like boulders in the terrace sequence had been depositied in a tuffaceious matrix. Apparently the boulders had been deposited on the subaqueous part of the delta at a time of higher lake level.The feldspar crystals in these boulders were dated with K-Ar as well as having the glass in the tuffaceous matrix fission-track dated.