“The Northeast Glacier has a central zone up and down the glacier which is greatly crevassed. The areas marginal to this zone, however, have only a few narrow crevasses. An area of sea ice everywhere covered with fragments of glacial ice, found in front of the crevassed zone during the cold season, may be called a brash and growler ice delta. It extends from the barrier outward for hundreds of feet and is characterized by an irregular, hummocky topography and by indications of pressure (1960, fig. 12; pl. 4, fig. 4) … . There is no area of broken glacial ice in front of the marginal zones. The brash and growler ice delta formed as follows: Masses of ice fell from the crevassed barrier onto the sea ice, and ice broke off from the glacial toe and floated upward … . During and following this, the glacier continued to move forward and outward, pushing the ice fragments and sea ice in front of it. Later, another mass of ice fell from the barrier. The continuous forward motion of the glacier pushed this ice outward, while the fragments formed earlier were pushed still farther out … . The thrust of the glacier as it moved into the field formed pressure ridges, cracks, and folded bay ice. Where the glacier moved most rapidly, the fragments were pushed farthest out into the bay and the area was widest. The delta was formed, therefore, by a discontinuous collapse of the crevassed barrier and by a rapid, continuous forward motion of the glacier while the barrier remained at essentially the same place.”