Download Diagenesis, IV by G. V. Chilingarian PDF
By G. V. Chilingarian
The current quantity maintains the philosophy of collecting contributions on diagenesis on behalf of these requiring such periodic literary surveys, specifically, teachers and practitioners (teachers, researchers, and oil and ore explorationists).
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Extra info for Diagenesis, IV
Sample text
Crystallization from a disordered mother phase is further divided into (1) melt growth, (2) solution growth, and (3) vapor growth. , see Chernov, 1984). If other components are present in the system, they can act as solvents (or fluxes), and reduce the melting point. This should be considered as solution growth, even if the viscosity and temperature of the liquid are high. Geologists often assume only crystal growth from aqueous solutions in terms of solution growth and regard magmatic crystallization as melt growth, simply because the latter takes place at elevated temperatures and from highly viscous liquid.
Bound with solvent component) solute component (solute-solvent complex) enters into the diffusion boundary layer; (b) when solute component reaches the interface and during its surface diffusion along the interface; and (c) when solute component enters into a step or a kink position, as schematically illustrated in Fig. 2-2. At each stage it should overcome the corresponding activation energy barrier. 34 I. , atomic structure, of an interface. , is atomically rough, the desolvated solute components can immediately find sites to be incorporated into the crystal as soon as they arrive at kink sites.
Hyalopyritic texture, commonly observed in basalts, could be experimentally reproduced for the first time by this experiment when a magma contains phenocrysts. In static experiments, these textures could not be reproduced, even if conditions allowed nucleation to take place at two distinct stages. Secondary nucleation phenomenon is expected to occur more commonly and frequently in sedimentary environments, because turbulence in solution flow and detachment and destruction of pre-existing crystallites should be ubiquitous in these environments.