Geological investigation into the mode of origin of the Wright and Taylor Valleys

The Labyrinth area in the Wright Valley is an unusual area of very steep gullies with flat treads between, which form a box canyon type topography. The mode of origin of the area is a controversial issue with many theories on how it was formed. The Wright Valley was investigated to try and elucidate the history of the valley by mapping of glacial and associated deposits, together with a study of their soil character and their weathering to try and link the sequence of glacial deposits, the past lake levels of Lake Vanda, some radiometrically dated basalts and some fossil pecten shells near Bull Pass. One of the best sections of Pleistocene sediments in Antarctica is found in the lower Taylor Valley. The area was visited to describe and sample critical sections in the Lower Taylor Valley where stratigraphic columns of glacial and fluvioglacial sediments were found. Correlation of selected members with Cape Bernacchii marine benches was also attempted. In addition, fossil deposits, glacial cut benches and volcanic rock samples were investigated at White Island. The most conspicuous features on White Island are five glacial benches on the north side of the island. These were measured in altitude. A few volcanic rock samples were collected from the north facing cliffs and from the summit of Mt Heine for further examination.