Utilization of sample disturbance for dating a marl deposit |
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| Authors: | G A Athanasopoulos |
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| Institution: | (1) Department of Civil Engineering, Geotechnical Engineering Laboratory, University of Patras, GR-26500 Patras, Greece |
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| Abstract: | Summary Values of the low-amplitude shear modulus, G
o, of a marl underlying the city of Kalamata, Greece, obtained by in situ crosshole and laboratory resonant column techniques are presented in the paper. It was found that the laboratory values were lower than their field counterparts and the difference was considered to be the result of (i) the temporary stress release following sampling and (ii) the mechanical disturbance associated with specimen preparation. By utilizing previous experimental results relating the field versus laboratory difference in the value of G
o to the age of the clay deposit, it became possible to estimate the age of the particular marl which was found to agree with the geologically expected age of the deposit. The approach taken in this study may, upon further improvement, become a useful technique for dating geological materials, especially those possessing cohesion. |
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| Keywords: | Ageing sample disturbance shear modulus tests clay marl |
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