Results of experimental studies of sedimentation rates in estuaries of the Yenisei and Ob' rivers and the adjoining part of the Kara Sea, which were carried out in 1999-2000, are presented in this paper. Vertical distribution ...

Hydrogen is a common impurity in diamonds, where its average concentration is 0.01 percent; but it may reach levels as high as 0.5 percent in carbonadoes and bort. Determining the isotopic composition of this hydrogen is ...

The contents of the inclusions were determined in a device that used mechanical grinding. A mortar and pestle joined by a bellows were connected directly to a vacuum system that included traps cooled with a mixture of dry ...

Ophiolites and black shales cut by granitoids associate closely within the Ospino-Kitoi area of the Eastern Sayan. This object is unique in that the diverse rocks occurring in this territory including ultrabasic rocks, ...

The paper presents the results of a survey of underwater disposal sites of potentially hazardous objects in the Kara Sea and Stepovogo Bay. The real levels of radioactivity were determined in the near and remote zones of ...

An approach is suggested to evaluate the geochemical regime of marine basins. By comparative study of the carbon isotopic composition of organic matter and its hydrogen index to oxygen index ratio in recent sediments a ...