Magnetic fabric of bulgarian loess sediments derived by using various sampling techniques |
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| Authors: | Neli Jordanova Diana Jordanova Vassil Karloukovski |
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| Institution: | (1) Geophysical Institute, Bulg. Acad. Sci., Sofia |
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| Abstract: | Summary The anistropy 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. |
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| Keywords: | anisotropy of magnetic susceptibility soft sediments compaction |
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