SPATIAL CORRELATIONS OF PSEPHITES AND PSAMMITES IN THE SEDIMENTARY COVER OF THE NOVOGRADSKIY BLOCK (THE UKRAINIAN SHIELD)

• Видавець: Institute of Geological Sciences, NAS of Ukraine
• Дата: 2017
• Автор: Baran, А.M.
• Формат: Стаття
• Мова: Ukrainian
• Опубліковано: Institute of Geological Sciences, NAS of Ukraine 2017
• Теми: spatial correlations; the Novogradskyi block; psephites; psammites; wells; trends; probability; пространственные корреляции; Новоградский блок; псефиты; псаммиты; скважины; поисковые признаки; просторові кореляції; Новоградський блок; псефіти; псаміти; свердловини; пошукові ознаки; УДК [550.8.05 552.51./.513/.517](477.42)
• Онлайн доступ: http://geojournal.igs-nas.org.ua/article/view/117332

The gravel-boulder and sand strata of sedimentary section of the Ukrainian shield on example of Novograd block at Volynsky megablock have been analyzed by statistical comparison method. For this purpose, a set of statistic values concerning the expansion of these sedimentary strata in research territory has been calculated. The initial data of the well has served as the basis for their calculation: predominating fractional composition of the stratum, width of layer, sequence of bedding, number of wells. As a result, we obtained data on spatial distribution of sand strata relative to each other. It was determined that these strata have hidden both positive and negative spatial correlations between each other. They are expressed in their increased more frequent or more seldom compresence in comparison with the rates of presence beyond the fields of each other expansion, often in their substantially different average depths in the fields of their joint location and beyond them, as well as in other statistic figures. It is shown that some sedimentary strata mainly occupy higher or lower position in section relatively to other stratum. Some most expressed correlations may be used as indirect searching signs during geological survey works connected with search and survey of loose mineral deposits as well as in the regional works. The following signs have been determined for research territory. This method enables to forecast with quite high probability some special features of geological structure of the crystal shield surface; it is cost effective and may serve as a new analytical tool during these works.