期刊名称：Auxiliary Sciences in Archaeology, Preservation of Relics and Environmental Engeneering
出版年度：2013
卷号：16
页码：1-7
出版社：University of Krakow
摘要：The article presents knowledge based on investigation of sandstones or siltstonescomposition from the Paleogene flysch terrains in North-East Slovakia. Samples offrequently crumbling clastic rocks were commonly considered to be close to sandstones,composed by predominant quartz. The set of such samples, belonging to Dukla UnitSandstones were analyzed using the XRD analyses. Beside of quartz the diffraction patternsgave the evidence in significant carbonate share with some minor to minute feldspars, micaand chlorite contents. Among majority of analyzed samples we distinguish three groups ofsandstones: (1) with the abundant calcite admixture, (2) the sandstones which containmeaning dolomite portion. The group (3) is representing the samples is formed the same byquartz as by both of carbonates, each of them could form important up to prevailed mineralcomponent. Comparison of analyzed samples mineral composition shows remarkable trendof higher calcite and dolomite contents in younger clastic sediments
关键词：X-ray analysis; mineral composition; sandstones; siltstones; calcite; dolomite
