CONCEPTUAL AND THEORETICAL MODEL OF CLASSIFICATION SPHERICAL AGGREGATE (OOLITE) CARBONATE ROCKS: PRINCIPLES, CRITERIA, FEATURES
Keywords:
spheroaggregates, spheroclasts, spheroids, oolites, nomenclature, classification, terminology.Abstract
For the first time, based on the analysis of domestic and foreign literature, issues of nomenclature, terminology and classification of spheroaggregate carbonate formations (spheroclasts, spheroids, oolites) were considered. Scientific approaches, principles, criteria and features are defined, which are the basis of classifications and scientific-terminological concepts of both breeds and their components of spheroids. The component composition of rocks (grains, matrix, cement) and morphological features of spheroclasts (macro- and microstructure) are given. Places of localization of different types (categories) of ooids in sedimentation media have been clarified. A conceptual and theoretical model for the classification of spheroids has been proposed, covering all available information. Due to the lack of reference material, all macro- and microscopic features of this type of rock are generalized and description methods are summarized in order to coordinate all parameters and characteristics (terminology) of spheroids/oolites to determine their various types (nomenclature). The developed classification model can be used as a basis for describing spheroaggregate rocks. The relevance of studying this type of entity is highlighted. Their significance is determined as the object of study of such scientific areas – sedimentology, lithology, oil and gas geology, paleontology, stratigraphy, paleogeography, geotourism.
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