Abstract
Vertical porosity variations in chalk are generally assumed to
result from either a vaguely defined combination of primary
sedimentary and diagenetic processes or solely to diagenetic
processes. In this study, image analysis of backscatter electron
images of polished samples and geochemical microprobe mapping were
applied to measure the porosity variation in a limited number of
chalk samples. Microscope data indicate that in all cases the
chalk has been subjected to diagenetic processes, but our data
suggest that the variations in porosity originate in primary
sedimentary differences.
Original language | English |
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Journal | Zbl. Geol. Paläont. Teil I |
Volume | 1994 |
Issue number | 11/12 |
Pages (from-to) | 1447-1457 |
Publication status | Published - 1996 |