Multivariate analysis of Miocene sediments: Rákóczi Square, new metro station area, Budapest, Hungary

Nikolett Bodnár, József Kovács, Ákos Török

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Miocene siltstone with variable sand content and bentonitic clay is the most abundant sediments encountered at the metro construction site at Rákóczi Square (Budapest). Core logs, drilling reports and records of laboratory analyses were studied to better understand the local geology and to prepare a database on engineering geologic properties of the materials. Using this database, geologic sections were prepared and geomathematical methods were used to obtain a better correlation of the strata in the area and a reconstruction of the geologic evolution of the area. The samples were divided into five groups based on physical properties. These five parameters allowed the use of multivariate statistical methods as cluster and discriminant analysis. As a result it was possible to identify several types of lithotypes, including two bentonitic clays with substantially different properties, one fat clay, one medium clay and one sandy, lean clay and siltstone group.

Original languageEnglish
Pages (from-to)391-405
Number of pages15
JournalCentral European Geology
Volume54
Issue number4
DOIs
Publication statusPublished - Dec 1 2011

Keywords

  • bentonite
  • clay
  • cluster analysis
  • geomathematics
  • metro

ASJC Scopus subject areas

  • Geology

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