profilach wieitrzeniowych doliny Wisly' ~rodkowej i przyleglych wyzyn. Dysertacja doktorska, UW. Warszawa, 1969.
3. H a m r 01 A. - A Quantitative Classification of the Weathering and Weather ability of Rocks. Pro-ceedings of the Fifth International Conference on Soil Mechanics and Foundation Engineering. Paris, 1961.
4. K 0 w a 1 ski W. C. - Wytrzymalosc na ~ciskanie budowlanych skal senoflskich przelomowego od-cinka Wisly sTodkowej na !tIe ich litologii. Biu!..
geol. UW., 1961:,
t.
1, cz. 2.SUMMARY
The paper presents an attempt at giving quanti-tative estimation of susceptibility
to
physical weath-ering of the Lower Maastrichtian rocks from the area of the mid-course of the Vistula River. The results demonstrate :that swelling and shrinkage, as well as frosting and defrosting are the main factors of physical weathering here.Changes in mechanical properties, determined in Deval's drum for samples in natural state and for those affedted by additional weathering, have been accepted as a criterion !to estimate rocks susceptible to physical weathering. The intensity of the influen-ce of the main factors of physical weathering on rocks is called by the present author .the factoc of susceptibility to physical weathering.
The examinations have also demonstrated that abou/t 60 per cent, of the rocks in study reveal grea-ter susceptibility to swelling and shrinkage than to frosting and defrosting.
5. M ii 11 e r L. - tl'ber das ~ass der Aufiacherung von Gesteinen. Geologie und Bauwesen. Springer Verlag, Vien, 1951, H. 2.
6. S z w i e c W. B. - Riekomiendacii po ispytani-ju krupnooblamocznych eliuwialnych gruntow na wywietriennost. Gosstrojizdat, Moakwa, ·01964. 7. S z
w
i e c W. B. - Eluwialnyje grunty kak08-nowanija sooruZenif. Ibidem.
8. W 0 r 0 n k i e w i c z S. D. - 0 Ikoliezestwienn<lj ocenkie wywietrielosti porod w inZynierno-gieo-logiczesklch cieliach. Woprosy 1nzeniernoj gieologii i gruntowiedienija. Izd. MOU, Moskwa 1963.
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