Conditions of the Depositions of the Paleogene Formation in the Racza Zone to the South of Zywiec (Magura Nappe, Polish Outer Carpathians)
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Ewa Wojcik
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| Transactions of the VSB - Technical University of Ostrava, Civil Engineering Series |
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2009, Volume 9, Issue 2, Pages 307-314
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Doi: Not indexed
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A new method for the description and classification of subaqueous sediment gravity flow deposits is proposed. The classification scheme employs a convenient letter codÄ™ and divides deposits (individual beds) into descriptive categories of two hierarchical levels: facies and subfacies. Facies. as the higher rank categories, are distinguished chiefiy on the basis of sediment type (bed grain size/texture). A total of 4 facies have been distinguished: TM=silt mud couplet, SM = sand mud couplet, MS = mud sand couplet and S=sand. Subfacies, as the lower rank categories, are distinguished within the individual facies on the basisof the bed's internal structures: m = massive and l = parallel laminated. Facies TM is bipartite beds, silty lower division and a muddy upper division. Facies SM and related facies MS are bipartite beds that comprise a lower sandy division and an upper muddy division. The two facies are distinguished by the difference in their sand/mud thickness ratios. Facies S comprise coarse sand beds that usually lack mud caps. The most common subfacies recognized in facies TM are laminanted (lTM). The most common subfacies recognized in facies MS are: laminated (1MS), massive (mMS) beds. The most common subfacies recognized in facies SM are: laminated (1SM), massive (mSM) beds. The most common subfacies recognized in facies S are massive (mSM) beds.
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