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Magnetic fabric of Bulgarian loess sediments derived by using various sampling techniques

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<mark>Journal publication date</mark>31/01/1996
<mark>Journal</mark>Studia Geophysica et Geodaetica
Issue number1
Number of pages14
Pages (from-to)36-49
Publication StatusPublished
<mark>Original language</mark>English


The anisotropy of low field magnetic susceptibility has been studied for seven outcrops of loess sediments in North-Eastern Bulgaria. Different sampling methods were applied in order to choose the best technique for obtaining the primary magnetic fabric of such unconsolidated sediments. AMS results show significant changes in the petrofabric of samples collected by the first technique which disturbs the original sedimentary fabric. The second applied technique does not cause such a strong deformation but some disturbance of the magnetic fabric is probable. Typical sedimentary fabric is obtained from hand samples and it is therefore concluded that this represents the best method for obtaining reliable AMS results from soft sediments.