Peculiarities in the deep structure of the Sakhalin-Hokkaido-Primorye zone

The results of detailed seismic crustal investigations in the marginal part of the transition zone from the Asian continent to the Pacific Ocean are discussed. The observations were carried out during 1963 and 1964 by expeditions of the Institute of Physics of the Earth of the U.S.S.R. Academy of Sciences and the Sakhalin Complex Research Institute, Siberian Division of the U.S.S.R. Academy of Sciences. The results of these measurements have been described in detail in a monograph, by Zverev and Tulina, entitled Deep Seismic Sounding of the Earth's Crust in the Sakhalin-Hokkaido-Primorye Zone (1971).

The distribution of seismic crustal characteristics is studied and schematic maps of the surface of presumably Cretaceous and Meso-Paleozoic (or pre-Paleozoic) sediments near Sakhalin Island as well as of the mantle surface in the Sakhalin-Hokkaido-Primorye zone are presented.