Silicon diffusion was measured in natural quartz and anorthitic feldspar under dry, low-pressure (0.1 MPa) conditions using a 30Si tracer. Sources of diffusant consisted of 30Si-enriched silica powder for experiments on ...

Among volcanic rock associations, the indicators of geodynamic environments, special attention has recently been paid to the boninite association: a series of high-magnesian, low alumina rocks, whose mafic members are close ...

A concise characterization of the lithology and stratigraphy of the Eastern Mongolian localities of Silurian Heliolitoidea and the faunal list of Reliolitoids from the Salhitin, Baruun Urt, and Süchbaatar Beds (Upper ...

Principles of stratigraphic regionalizing and chronozonal characteristics of global and regional stratigraphic scale for East Siberia are presented. The stratigraphic regionalizing resulted in recognition of five subregions ...

Conditional surface binding constants and complexation capacities for Zn, Pb, Cd, and Cu were determined from surface titration experiments of heterogeneous natural aquatic particulate matter of different origin and ...

Assuming that the earthquake focus is a rock volume filled with aftershocks, the author considers the concept of the center C of an earthquake and the distance ri from it to any point on the earth's surface. For this purpose ...

Using a method of preparing polished thin-sections described in this paper, we are able to detect microdiamonds in high-pressure metamorphic rocks quickly and quantitatively by a distinctive striation pattern on the polished ...

In this paper we examine the effect of inhibition on mineral dissolution rate. We postulate a reaction mechanism that involves catalysis and inhibition. The reaction mechanism consists of fast adsorption of a catalyst ...

Finite element models of square objects in a contrasting matrix in simple shear show that the objects deform to a variety of shapes. For a range of viscosity contrasts, we catalogue the changing shapes and orientations of ...