Wright Fjord

The lack of abrasion of the pecten shells, the presence of articulated pairs of shells, the lack of sorting, and other criteria cited by Webb (1972) indicate that the shells were deposited in situ in a fjord and were not transported from McMurdo Sound as previously proposed by Nichols (1965). The evidence pertaining to the peeten shells in Wright Valley was also evaluated 

During the time of the two recorded marine incursion into Wright Valley, a deep fjord existed in Taylor Valley from before the late Miocene to the middle Pliocene (3.4 Ma) (Ishman and Rieck 1992). Since Taylor Valley is part of the same structural block, the marine incursion into Wright Valley may also have been continuous from middle-to-late Miocene to early-to-middle Pliocene. 

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Webb P-N (1972) Wright Fjord, Pliocene marine transgression of an Antarctic dry valley. Antarctic J US 7(6) 225-232... 

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