Results of examination and mapping of some 260 sediment samples from the continental shelves off Vladivostok and Kamchatka (USSR) and in the Bering sea show that biogenic calcium carbonate is considerably less abundant and amorphous silica more abundant than in sediments farther south where water temperatures and salinity are higher. The major component of the sediment is modern detritus contributed by streams and marine erosion and distributed by currents across the narrow shelves. In the shelf area off Vladivostok, the modern detritus has completely buried an earlier relic component representing material deposited under conditions of a glacially lowered sea level. Off Kamchatka and in the Bering sea the supply of sediment has been insufficient to achieve complete burial.

First Page Preview

First page PDF preview
You do not currently have access to this article.