On the participation of natural salts in alkaline magmatism Article 1. Natural salt-alkaline associations

The article is devoted to the analysis of spatio-temporal relationships of natural salts and alkaline magmatic complexes in order to determine the geological probability of the participation of salts in alkaline magmatism. Indicators of the possibility of such participation are considered: the similarity for each of them halophilic and foidaphilic (from “foid” i.e. feldspathoid) sets of specific components, the convergence of distribution areas and the comparability of a number of regularities location of both. On a specific regional and global material, it is shown the frequent occurrence of alkaline complexes with older salts with the formation of salt-alkaline associations. Characteristics of the temporal relationships between the salt and alkaline objects are described, their basic tectonic types are examined and a brief overview of different age representatives is given. It is shown that the position of alkaline magmatic complexes often coincides with the levels of the distribution of the burial more ancient salt-bearing sequences and responds to the areas of intersection of ascending deep magmas with them. A positive estimate of the geological probability of the participation of salts in alkaline magmatism is given. Geological and genetic aspects of the salt-alkaline interactions will be considered in the second article.